Backfill material and the method of laying it in the goaf (options)

 

(57) Abstract:

The invention relates to the mining industry and can be used in underground mining with the mined-out space. The technical result - the increase of the bearing capacity of embedded array, reducing the consumption of hardening solution and the simplification of filling out space. Backfill material including crushed rock, forming laid the array, and injectively in its pores hardening solution, as crushed rock contains rock with grain size, providing after her vibrating laying education laid the array with porosity 7-15%. The method of installation in a goaf stowing material includes the supply of crushed rock in a goaf, laying it with the formation of the embedded array installation in the last injectors, injectiona curing solution into the pores embedded array, and while laying in a goaf crushed rock in terms of its volume provide evenly distributed vibration ozdenoren. Hardening solution for each section can be selected depending on the condition of the ore in the roof and the stress state of the array in it. 3 C. and 30 C.p. f-crystals.

The invention relates to the mining industry and can be used in underground mining with the mined-out space.

Known composition of the filling mixture (see ed. St. USSR 1620656, E 21 F 15/00, publ. BI 2, 1991), including frozen breed, additional filler and an aqueous solution of surfactants. As an additional filler use sand in the following ratio, wt.%:

Crushed frozen rocks - 59,4-64,4

Sand - 24,8-30

An aqueous solution of surfactant - rest, and as the aqueous solution of surfactant - water solution of wetting agent DB in the following ratio, wt.%:

The wetting DB - 0,42-2,6

Water - the Rest

A disadvantage of the known composition of the filling mixture is reduced durability laid out her array through the use of a large amount of sand.

The closest in technical essence and the achieved effect is SOS is the genus, water, crushed ice and clay slurry in the following ratio, wt.%:

Crushed frozen rocks - 58-62

Clay sludge - 6-7,5

Crushed ice - 20-24

Water - 10-12,5

A disadvantage of the known composition of the filling mixture is low strength laid it in the array due to use as a placeholder 20-24% ice.

It is well known the use of vibration impacts for the laying and compaction of granular materials (see, for example, P. L. Ivanov. Soils and Foundation of hydraulic structures. Soil mechanics. - M.: Higher school, 1991, S. 89-100).

A known method of construction backfill array in permafrost conditions (see RF patent 2009329, E 21 F 15/00, publ. BI 5, 1994), including laying in the developed space mix thawed soil water layers between them compensating layers of soil with weight humidity 5% to 15% and the power is determined depending on the height of the array and the physical parameters of the stacked materials.

The disadvantage of this method is the complexity of the technology of construction of the backfill array, consisting of melting ground and then bringing them to full saturation with water. The AOC is also the method of construction of artificial Laporte pillar (see auth. St. USSR 1544989, E. 21 F 15/00, publ. BI 7, 1990), including the empty mixing crushed rock crushed ice and fill out space formed Laporte mixture with subsequent sealing of the external load. When mixing the waste material with ice, the ice on the amount you take is equal to the external volume of the voids contained in the incoming empty mixing rock and seal Laporte mixture is carried out at a pressure of 0.4-0.7 MPa.

A disadvantage of the known technical solution is low strength built Laporte pillar through the use of a large amount of ice and complexity of construction.

The closest in technical essence and the achieved effect is a method of laying-out of space (see ed. St. USSR 1016539, E. 21 F 15/00, publ. B 17, 1983), including the filing in a goaf granular backfill material, installation in granular backfill array of injectors and injection on them in filling the array hardening solution, and after submission to the goaf granular backfill material serves cast curing the mixture to fill nezamescennych voids, and the discharge solids is Ohm known technical solution is the low strength of the embedded array high consumption injectiong hardening solution due to the high porosity of granular backfill material.

The concept of "filling mixture" was replaced in the future, the concept of "filling material" according to the Handbook "Backfill work in the mine". - M.: Nedra, 1989, S. 5.

The technical objective of the proposed solutions is to increase the bearing capacity of embedded array, reducing the consumption of hardening solution and the simplification of filling out space by creating a solid framework of tightly stacked vibration impacts of crushed rock and fill the pores between them hardening solution, which occupy the volume of the embedded array only 7-15%.

The problem is solved as follows. Backfill material including crushed rock, forming laid the array, and injectively in its pores hardening solution, according to the technical solution as crushed rock contains crushed rock with grain size, providing after her vibrating laying education laid the array with porosity 7-15%.

This solution ameenah rock with a certain grain size. Granulometric composition, the particle size of the individual fractions and the amount of each of them must provide the installation with a minimum amount of time.

When laying formed rigid frame from pieces of rock, which determines the load bearing capacity of embedded array.

To increase the strength of crushed rock can be represented strong, such as granite, and very strong, for example basalt rocks. The larger piece is the largest faction, the higher bearing capacity of the embedded array.

The mined-out area where you plan to use this solution, made for example in the form of a tape height up to 3 m, width 6 m, length up to 50 m and more. In the developed space envisages the use of valves and other elements, complicating the form. This allows you to use the chunk size is the largest faction of virtually any up to 500 mm, the larger the pieces, the largest faction in the backfill material, the less the energy consumption for grinding when cooking it. The size of the largest piece of the fraction will depend on the technical capabilities to transport the rock to the bottom and technical the fractions and volume fractions for each set, on the basis of the required porosity embedded array of crushed rock. Moreover, it is desirable that crushed the rock in its composition did not contain dust particles and particles of size less than 0.5 mm, the Presence of these particles will complicate the process of injection of the hardening solution is incorporated into the pores of the array, reducing the wettability. Screening of small and pulverulent fraction preferably be used in the preparation hardening solution, injectisome incorporated into the pores of the array.

The proposed backfill material, according to the authors, will find wide application in the development of powerful fields layering technology with the mined-out space in ascending order. With this technology there is no load-bearing elements laid in the array, experiencing tensile and shear loads. Laid the array will be subjected to compressive loads. The frame is laid array of carefully laid (by vibration) pieces of crushed rock will provide him the necessary strength. The pores are filled hardening solution is necessary only to ensure the stability and fixation of the pieces laid in the array, so the strength injectively particle size distribution of crushed rock. The size of pieces, number of fractions and the amounts of each of them define the required porosity embedded array, based on economic considerations.

What is more economical to have multifraction composition of crushed rock, providing small porosity (which will reduce the consumption of solid solution on injectiona laid it in the array), or a small number of fractions, and when laying in the mined-out area to have a greater porosity embedded array, when filling the pores of which will be additional costs injectiona? The porosity of the backfill material to determine the economic calculation for the specific mining conditions.

Both in that, and in the other case it is possible to have the necessary strength laid in the array.

It is advisable that at temperatures below 0oWith the hardening solution was frozen clay.

This solution significantly reduces the cost of the mined-out space, as the ice strength sufficient to secure the pieces of crushed rock after vibration laying them in a goaf.

When developing the Yakut diamond the new tubes are located in areas of permafrost rocks, it is advisable to use low temperature for backfill material on the basis of the hardening solution.

Rocky rocks split up and scatter on the screens by size (fractions). Then necessary for each faction volumes mix them together and form a crushed rock with a certain grain size. All this lead on the surface of the negative natural temperatures. In naturally cooled, crushed rock placed in the mined-out area of the mine.

Mud is prepared in the mine in proportions providing injectiona it under pressure into the pores embedded array. The percentage of components is determined experimentally, the water is approximately 20-40%. The flow of drilling mud to 1 m3embedded array of small (5-10%), the stock is cold in the crushed rock will be sufficient for freezing mud without any special measures.

Moreover, there is the possibility of regulating the flow of mud by changing the particle size distribution of crushed rock.

It is advisable that at temperatures below 0oWith sortiment used for backfill material. At low temperature the crushed rock can be the selection of their particle size distribution (to eliminate or reduce the amount of fines) to increase the porosity of the embedded array. At high porosity is useful for injection sandy-clay mortars.

It is advisable that at temperatures below 0oWith the hardening solution was frozen ash. This allows you to dispose of the ash from thermal power plant at the mine, improving the ecological situation of the enterprise. The use of fly ash reduces the cost of processing the hardening solution. In addition, the solution of the ash has a high penetration ability in porous laid the array that effectively.

It is advisable that at temperatures below 0oWith the hardening solution was frozen solution sludge sludge concentrator.

On almatycnnkhaleej plants accumulate a large amount of sludge sludge that are not of commercial value and degrade the environment near the factory. The use of a mixture of silt slag as a hardening solution will greatly simplify the technology of preparation of the hardening solution and reduce its cost.

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Sand-cement mortar in the proposed backfill material captures crushed rock from the offset of the individual pieces relative to each other. In this regard, sand-cement mortar may have limited strength. The main requirement imposed on him, penetrating power into the pores between the pieces of crushed rock.

A limited amount then pledged the array requires a small flow rate of hardening solution, and the limited strength of the hardening solution a small amount of cement in the composition, and all this together will reduce the consumption of cement for laying-out space.

It is advisable to sand-cement slurry additionally contains a plasticizer.

The use of plasticizer will provide additional mobility of sand and cement, which will increase the spread it around the injector, therefore, reduce the complexity of injection laid it in the array.

It is advisable that at temperatures above 0oWith the hardening solution was hardened sand and lime.

In the province of Yakutsk diamond deposits are deposits and the m automotive transport 400-800 km

It is advisable to produce lime in place and use sand-lime mortar for fixing crushed rocks after her vibrating styling. When this requirement to the limited strength of the hardening fixing solution.

It is advisable that at temperatures above 0oWith the hardening solution was hardened sand-plaster.

In the province of Yakutsk diamond deposits are deposits of gypsum, and it is possible to obtain gypsum as a building fixing material. In the practice of mining kimberlite pipes underground option of creating embedded array with a limited time fill backfill material to create a safe work environment. In these cases it is advisable to use sand plaster hardening solution, which has a very short period of hardening.

It is advisable that at temperatures above 0oWith the hardening solution was solidified solution of activated slag, such as a domain.

In the proposed technology significantly reduced strength requirements of hardening solution. You can use substitutes for cement in widlak get in the processing of limestone, gypsum, etc., It improves the environment near mine.

It is advisable that at temperatures above 0oWith the hardening solution was hardened synthetic resin.

For conditions when the array additional demands on waterproofing, it is advisable to use a hardening solution of synthetic resins, including resins, prone to foaming upon contact with water.

With proper selection of the particle size distribution of crushed rock can provide a minimal porosity, which will reduce the consumption of synthetic resin, and the modern development of injection techniques provides injectiona resin even when the natural cleavage and fracture.

When using a foaming resin can be obtained laid the array with reliable waterproofing.

It is advisable that when this resin was additionally contain inert additives.

When using backfill material from crushed rock having a relatively high porosity, it is advisable to use a hardening solution with a synthetic resin, optionally containing inert dobavit injectors.

The technical problem is solved by the fact that in the method of installation in a goaf stowing material, including the supply of crushed rock in a goaf, laying it with the formation of the embedded array installation in the last injectors, injectiona curing solution into the pores embedded array, according to the technical solution used for backfill material under item 1, and simultaneously with the laying in a goaf crushed rock in terms of its volume provide evenly distributed vibration impacts, through which stack it with the highest possible coefficient of relative density of the addition.

At the same time provide backfill material under item 1 is not the entire volume of the goaf, and only part of it. This is necessary to ensure that the developed space, where the filling to create a vibrating effect with the necessary intensity. In terms of simplified volume control, but also reduces the required power of the vibration source. Moreover, it is possible to use multiple sources of vibration exposure, while working in a dedicated part of the volume of its own weight and vibration impacts are placed in the volume of the goaf. All intervals between large chunks filled with smaller pieces. In the technical literature on compaction of soils during construction fill dams used and legalized the term "density of addition of the" a "coefficient of relative density of addition", the maximum value of 1.0, meaning that all the pores between large chunks filled successively smaller pieces. At a certain particle size distribution density of addition may be possible, but the pores are present, because this part was not the rocks that were placed in these pores.

If lead simultaneously with the filling of the goaf vibration impacts on crushed rock, then you can fold it with the maximum density, creating a strong framework from crushed rock.

The frame will perceive the entire static load. The strength of this frame depends on the strength of crushed rock and the size of the largest faction of the particle size distribution. To ensure that the required strength of the embedded array was maintained within the strength of crushed rock needed stability saunaheater below the 0oWith the hardening solution was frozen clay.

For fixing the folded frame of the rock pores fill hardening solution by injecting it under pressure.

Depending on the ambient temperature can be used in various pH solutions.

At temperatures below 0oWith appropriate to the hardening solution were rocks containing water. The ice strength sufficient for fixing pieces of crushed rock, carefully laid by vibration exposure. As a placeholder in the hardening solution, you can use the clay.

It is also advisable that at temperatures below 0oWith the hardening solution was frozen sand and clay.

For fixing crushed rock, carefully laid vibration impact when crushed rocks missing small fraction, it is advisable to use sand and mud, with a predominance of sand in the solution, which increases the strength of the embedded array.

It is also advisable that at temperatures below 0oWith the hardening solution was frozen ash.

For fixing the crushed rock is>/P>Solutions ashes have high penetrating ability in porous laid the array.

At temperatures below 0oWith the hardening solution can be frozen solution sludge sludge concentrator.

It is advisable to use sludge sludge almatycnnkhaleej factories, because they consist of small fractions of rocks and capable under pressure from the well to penetrate into the pores carefully laid vibration impact pledged array.

At temperatures above 0oWith the hardening solution can also be hardened sand and cement.

For crushed rock, carefully laid vibration exposure, it is advisable to use sand-cement slurry, which is pumped under pressure. This allows you to increase the strength of the embedded array and to reduce the consumption of cement.

It is reasonable to sand-cement slurry additionally contains a plasticizer.

The use of plasticizer to increase the penetrating ability of the sand and cement in the pores of the crushed rock, carefully laid vibration exposure.

At temperatures above 0oWith harden is down to fill the pores in the crushed rocks, carefully laid in the array of vibration exposure, will provide reliable strength of the array and reduce the costs of carrying out filling operations through the use of lime local produce instead of imported cement.

At temperatures above 0oWith the hardening solution can be hardened sand-plaster.

The use of sand-plaster solution to fill the pores in the crushed rocks, carefully laid in the array of vibration exposure, will provide reliable strength, will reduce the period of hardening embedded array and lower consumption of gypsum.

At temperatures above 0oWith the hardening solution can be solidified solution of activated slag, such as a domain.

The use of activated slag, such as a domain, to fill the pores in the crushed rocks, carefully laid in the array of vibration exposure will significantly enhance the strength of the embedded array.

At temperatures above 0oWith the hardening solution can be hardened synthetic resin.

The use of synthetic resin to fill the pores in the crushed rocks, carefully laid in is dreisessel.

It is reasonable to synthetic resin optionally contain inert additives.

The use of synthetic resin with inert additives to fill the pores in the crushed rocks, carefully laid vibration exposure in the mortgaged array, reduces the consumption of synthetic resin.

It is useful first through the injectors to handle embedded array of water vapor, then injectivity in its pores hardening solution.

Processing embedded array of water vapor will provide wettability pieces of crushed rock. On the cold surface of the pieces of rocks formed a thin film of condensed water, which will ensure the wettability of the surface of the pieces of rocks water hardening solution. It is desirable to use for this purpose superheated steam of high humidity (in the terminology of heating engineers - "crumpled water vapor") with a short exposure time, to prevent thawing of the array; heating pieces of superheated steam will be superficial.

Preferably the impact of superheated vapour high pressure. Due to the increased pressure he penetrates to greater globingo solution.

Expedient injectiona lead from the roof to the ground goaf.

The order of injection ensures high blood pressure and more complete filling of pores embedded array, which increases its stability.

It is also injectiona lead from the soil to the roof of the goaf. It provides full saucepan voids laid between the array and the roof of the goaf and thereby reduces the stratification of ore array.

Suitable vibration effect when laying crushed rock lead truss elements with channels through which injection curing solution into the pores of the pledged array goaf.

The small size tape goaf it is advisable to use a rigid rod elements, through channels which subsequently injection hardening solution laid in an array for this to truss elements attach the end. This technique simplifies the process of injection and technology to conduct filling operations, especially when the limited size of stope.

In venoy rocks in the mined-out area, laying her education embedded array installation in the last injectors, injectiona curing solution into the pores embedded array, according to the technical solution used for backfill material under item 1, and simultaneously with the laying in a goaf crushed rock in terms of its volume provide evenly distributed vibration impacts, through which stack it with the highest possible coefficient of relative density of the addition, and after the formation of the embedded array in pore areas injection hardening solutions for each site hardening solution in one of the paragraphs.2-12 choose depending on the state of ore in the roof and the stress state of the array in it.

Depending on the stress state of the ore roof determine the required strength of the embedded array on separate plots. In accordance with this determine the degree of compaction laying crushed rock. Conduct vibration impacts to obtain a given density addition to these specific areas of the tape. In addition, pick up injectible solution for each of the sites. For example, in the developed space ostalnoe part - clay solution. In addition, the application of curing solution with high strength is necessary in areas adjacent to the existing mine workings, and the rest laid the array can be injectivity less strong hardening solution. All operations are on the project which shows the actual mining and geological conditions in the formulation layer. The above provides increased safety and reduced consumption of expensive binders.

Thus, it is expedient first through the injectors to handle embedded array of water vapor, then injectivity in the pores of the sites selected for them hardening solutions.

Use water vapor promotes the formation of a film of condensate water on the pieces of rock in a tightly Packed area of the array, which improves the degree of injection of the hardening solution and increases the strength.

Expedient injectiona selected for areas of solid solutions of lead from the roof to the ground goaf.

The order of injection ensures high blood pressure and more complete filling of pores laid plot array, which subsequently increased the solutions lead from the soil to the roof of the goaf. It provides full saucepan voids between the incorporated areas of the array and the roof of the goaf and thereby reduces the stratification of ore array.

Suitable vibration effect when laying crushed rock lead truss elements with channels through which injection in pores plots laid array goaf selected for them hardening solutions.

The small size tape goaf it is advisable to use a rigid rod elements, through channels which subsequently injection hardening solution in the area of embedded array for this to truss elements attach the end. This technique simplifies the process of injection and technology to conduct filling operations, especially when the limited size of stope.

The essence of the technical solution is illustrated by examples of implementation.

The components of the backfill material is prepared as follows.

Rock rock crushed famous crusher to the desired particle size. Produce sieving the crushed rock into fractions in accordance with grayscaling rocks get laid an array with maximum sum by vibration with a certain residual porosity.

According to the elaborated recommendations are the method, which shows the volume fractions of crushed rock to get to a certain porosity.

The developed technique, based on the mining conditions, trying to enter the volume fractions of crushed rock and produce mixing factions among themselves.

All of the above steps for the preparation of crushed rock is carried out at ambient temperature. Prepared crushed rock delivered in the slaughter to lay the goaf.

Depending on the temperature in the developed space and cooked crushed rock (above or below the 0oC) make the selection and preparation of hardening solution.

At temperatures below 0oWith (negative) as a hardening solution using frozen clay aqueous solution, an aqueous solution of ash, aqueous solution sludge sludge concentrator, water sand and mud.

For each of the above solutions special studies establish the desired ratio of water and solid additives (sand, clay with sand, ash, sludge sludge about the t best consolidation of crushed rock. On the basis of these researches are the technological instructions for preparation and injection of hardening solution.

Hardening solutions of a certain composition is prepared in the face of technological instructions depending on mining conditions.

At temperatures above 0oWith (positive) as a hardening solution using a sand-cement-water grout, sand cement aqueous solution with addition of plasticizer, sand-lime water solution, sand and gypsum aqueous solution, an aqueous solution of activated slag, e.g. domain. For each of the above-curing aqueous solutions according to research conducted special studies are the technological instructions for preparation and injection laid it in the array.

When making a technological statement, account mining conditions laid down in the array and the properties of each of hardening solutions.

In addition, as a hardening solution can be used hardening synthetic resin or hardening synthetic resin, optionally containing inert additives.

The hardening solution is this mining conditions goaf and laid crushed rocks of the array.

An example of the method of laying in a goaf stowing material.

In the first embodiment of the method taken in the face of crushed rock of a certain particle size distribution is placed in the goaf, forming laid the array. After the formation of the embedded array in its pores injection prepared hardening solution.

At temperatures below 0oWith injection aqueous solutions, such as clay, until full saturation is then laid in the array. Works are instruction manuals which indicates the final pressure of injection for each case.

Due to the negative environmental temperature (crushed rock, goaf and ore) water in clay mortar, placed in the pores freezes and fixes the position of each piece laid crushed rock. Crushed the rock is the main bearing element embedded array, and frozen mud only fixes the position of the frame of blasted rock.

Depending on mining conditions as hardening solution y, water ash, aqueous solution sludge sludge concentrator.

At temperatures above 0oWith injectiona are sand-cement mortar for technological instruction, which indicates the pressure of injection for each specific case. Moreover, in view of the fact that the main carrier function performs a frame made of stacked pieces of crushed rock of a certain particle size distribution, reduce demands on the strength hardening sand-cement mortar. "Dice" strength hardening sand and cement may be as low as possible, which will reduce the consumption of cement.

To provide additional mobility of sand and cement should be used plasticizers, which will reduce the complexity of injection of the hardening solution is incorporated into the pores of the array.

In addition, at temperatures above 0oWith as hardening solution can be used hardening solutions: sand-lime, sand, gypsum, activated slag, e.g. domain. The use of each of these solutions is conducted according to the instruction manual for the specific mining conditions.

Simultaneously with the laying in a goaf crushed rock in terms of its volume provide evenly distributed vibration impacts, through which stack it with the highest possible coefficient of relative density of the addition.

At the same time provide not the entire volume of the goaf, and only part of it. This is necessary to ensure that the developed space, where the filling to create a vibrating effect with the necessary intensity. This simplifies the control of the intensity of vibration exposure, and also reduces the required power of the vibration source. Moreover, it is possible to use multiple sources of vibration exposure, while working in a dedicated part of the goaf. Upon receipt of crushed rock her individual pieces under its own weight and vibration impacts are placed in the volume of the goaf. All intervals between large pieces fill aricescu load. The strength of this frame depends on the strength of crushed rock and the size of its largest faction. To ensure that the required strength of the embedded array was maintained within the strength of crushed rocks, the necessary stability of the folded frame, that is, the fixing pieces laid in the array for which the pores are filled lead-injecting hardening solution depending on mining conditions.

Before doing work on the injection curing solution into the pores of the pledged array can be processed, for example, superheated steam. Through injector laid in the array serves superheated steam within 5-30 seconds. The processing time of superheated steam is chosen taking into account the fact that there is no thawing array, and crushed rocks managed to form a film of condensate water, which promotes the penetration of the hardening solution and the best coupling it with chunks of rock. After treatment by superheated steam are injectiona hardening of mortar laid in the array.

Injectiona laid in the array through the injectors hardening solution can be maintained based in ascending order - from the soil to the roof with all of the above hardening solutions.

Laying crushed rock limited goaf, you can produce a vibratory truss elements, through channels which subsequently lead injectiona curing solution into the remaining pores embedded array.

When laying crushed rock limited goaf you can perform, injectiona hardening of mortar laid in the array. When this option when the vibration sources using beam elements, through channels which are injectiona laid in the array or its parts, and as a source of vibration impacts use of special devices.

In the second variant of the method of injectiona laid in an array goaf through the injectors hardening solution produce plots. Depending on mining conditions choose sites that injection more durable hardened mortars or less strong, and for waterproofing for injection choose synthetic specialsonline operations are performed in the same way, as in the first variant of the method.

1. Backfill material including crushed rock, forming laid the array, and injectively in its pores hardening solution, characterized in that the quality of the crushed rocks it contains crushed rock with grain size, providing after her vibrating laying education laid the array with porosity 7-15%.

2. Backfill material under item 1, characterized in that at temperatures below 0oWith the hardening solution is frozen clay.

3. Backfill material under item 1, characterized in that at temperatures below 0oWith the hardening solution is frozen sand and clay.

4. Backfill material under item 1, characterized in that at temperatures below 0oWith the hardening solution is frozen ash.

5. Backfill material under item 1, characterized in that at temperatures below 0oWith the hardening solution is frozen solution sludge sludge concentrator.

6. Backfill material under item 1, characterized in that at temperatures above 0oWith the hardening solution is hardened sand and cement.

7. Zaklada the LASS="ptx2">

8. Backfill material under item 1, characterized in that at temperatures above 0oWith the hardening solution is hardened sand and lime.

9. Backfill material under item 1, characterized in that at temperatures above 0oWith the hardening solution is hardened sand-plaster.

10. Backfill material under item 1, characterized in that at temperatures above 0oWith the hardening solution is solidified solution of activated slag, e.g. domain.

11. Backfill material under item 1, characterized in that at temperatures above 0oWith the hardening solution is hardened synthetic resin.

12. Backfill material on p. 11, characterized in that the synthetic resin additionally contains an inert additives.

13. The method of installation in a goaf stowing material, including the supply of crushed rock in a goaf, laying it with the formation of the embedded array installation in the last injectors, injectiona curing solution into the pores embedded array, characterized in that use backfill material under item 1, and simultaneously with the laying in developed prostranstva, through which stack it with the highest possible coefficient of relative density of the addition.

14. The method according to p. 13, characterized in that at temperatures below 0oWith the hardening solution is frozen clay.

15. The method according to p. 13, characterized in that at temperatures below 0oWith the hardening solution is frozen sand and clay.

16. The method according to p. 13, characterized in that at temperatures below 0oWith the hardening solution is frozen ash.

17. The method according to p. 13, characterized in that at temperatures below 0oWith the hardening solution is frozen solution sludge sludge concentrator.

18. The method according to p. 13, characterized in that at temperatures above 0oWith the hardening solution is hardened sand and cement.

19. The method according to p. 18, characterized in that sand-cement slurry further comprises a plasticizer.

20. The method according to p. 13, characterized in that at temperatures above 0oWith the hardening solution is hardened sand and lime.

21. The method according to p. 13, characterized in that at temperatures above 0oWith the hardening solution is solidified nd the solution is solidified solution of activated slag, for example, the domain.

23. The method according to p. 13, characterized in that at temperatures above 0oWith the hardening solution is hardened synthetic resin.

24. The method according to p. 23, characterized in that the synthetic resin additionally contains an inert additives.

25. The method according to one of paragraphs.13-24, wherein the first through the injectors handle embedded array of water vapor, after which injection in its pores hardening solution.

26. The method according to one of paragraphs.13-25, characterized in that injectiona lead from the roof to the ground goaf.

27. The method according to one of paragraphs.13-25, characterized in that injectiona lead from the soil to the roof of a goaf.

28. The method according to one of paragraphs.13-27, characterized in that the vibration effect when laying crushed rock are the core elements with channels through which injection curing solution into the pores of the pledged array goaf.

29. The method of installation in a goaf stowing material, including the supply of crushed rock in the goaf, laying her education laid mA is tives such as those what use backfill material under item 1, and simultaneously with the laying in a goaf crushed rock in terms of its volume provide evenly distributed vibration impacts, through which stack it with the highest possible coefficient of relative density of the addition, and after the formation of the embedded array in pore areas injection hardening solutions for each site hardening solution in one of the paragraphs.2-12 choose depending on the state of ore in the roof and the stress state of the array in it.

30. The method according to p. 29, characterized in that the first through the injectors handle embedded array of water vapor, after which injection in the pores of the sites selected for them hardening solutions.

31. The method according to one of paragraphs.29-30, characterized in that injectiona selected for areas of solid solutions of lead from the roof to the ground goaf.

32. The method according to one of paragraphs.29-30, characterized in that injectiona selected for areas of solid solutions of lead from soil to the roof of a goaf.

33. The method according to one of paragraphs.29-32, wherein vibratory injection in pores plots laid array goaf selected for them hardening solutions.

 

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The invention relates to mining and can be used to provide maintenance-free maintenance of the reservoir openings in the practical application of the model of training schemes mine fields due to the rational management of stresses and strains in the host developing rocks

The invention relates to mining and can be used in the development of mineral deposits with a bookmark cameras, preferably aldobrandi profile

The invention relates to mining and can be used when laying small amounts, for example, under the protected objects

The invention relates to the mining industry and can be used in underground development of tubular bodies of kimberlite deposits

FIELD: mining industry.

SUBSTANCE: method includes partial filling of extracted space of side and central mains by filling stripes from lava extracting shafts. At center of semi-lava on the side of massive, wherein next extractive column will be cut, filling shaft is additionally driven, wherefrom full filling of space between central fill stripe and fill stripe on the side of massive is performed. Preparation of next extraction column is performed under protection of erected fill stripes.

EFFECT: higher safety, higher efficiency.

1 dwg

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