Method for driving draining mines in broken and watered massif

FIELD: mining industry.

SUBSTANCE: method includes erection of wall, prior reinforcement of rock massif along extraction track by drilling longitudinal and slanting wells and forcing reinforcing cementing solutions into these wells, destruction and cleaning of rocks under protection of cementing cover, erection of permanent support, following reinforcement of contour-adjacent massif by cementation solutions through wells, drilled perpendicularly to mine axis. Draining wells are additionally drilled with delay through cementing layer having length greater than thickness of reinforced rocks zone, to form a draining layer around reinforced cover.

EFFECT: higher effectiveness.

2 cl, 4 dwg

 

The present invention relates to the mining industry, but can be used in other areas involving the use of mines, for example in the municipal building.

Dissection and preparation of mineral deposits is complicated by the zones of geological faults and zones of weakened and watered rocks. The implementation and maintenance of mine workings in flooded and unstable mountain massif is characterized by a number of complications: a decrease in mechanical strength of rocks, increasing pressure on the lining due to deterioration of physical properties of rocks and additional hydrostatic pressure and increased water production.

Known methods of sinking mines in difficult mining and geological conditions with the use of knock-in lining, when under the protection of the permanent lining in the mountain massif is built knock-shoring (punctured), then in the circuit produce on a small departure is the destruction and cleaning of the rock mass under the protection PocoLoco and immediately erected a powerful permanent shoring (see avts SU 1624243 A1, m CL E 21 D 9/00). The method is very laborious and is applicable mainly in the sinking of the workings of a small section, but it is not applicable at high water.

Closest to the present invention is a method of drilling a nd the different workings in areas of geological faults with weak rocks and large water using prior and subsequent hardening of rocks cementation, when pre-built in the bottom output jumper through leading well is pumping cementing solutions with the aim of creating a hardened proDocument stone with a cross sectional area exceeding the cross-section of excavation. Then produce destruction and cleaning rocks on all generation section, and then through wells drilled perpendicular to the axis generate the injection of grout solutions in sacranie space for the subsequent hardening of the selection array and the elimination of residual fracture (see Production backfill during emergency conditions mining / Construction enterprises of the coal industry: an Overview. - Vol. 7. - M., 1985.- With 6-15).

The disadvantage of this method is to reduce treniruemoj groundwater production from the zone hardened rocks, ensuring the stability of mine workings.

The aim of the present invention is the reduction of material costs for the drilling and maintenance of drainage openings in moderately and weakly resistant and watered rocks. A comprehensive solution to the problem of increasing resistance while ensuring treniruemoj groundwater is possible by sequential execution of the following works:

- vozvedenie the jumper in the slaughter and pre-grouting of the rock mass along the excavation;

- direct penetration of generation with the installation of permanent roof supports;

- subsequent cementation ecolocontrol rock mass;

- drilling of drainage wells in length exceeding the length of the wells subsequent cementation of more than 1.0 m;

- creation of a high-permeability drainage layer outside the area of hardened rocks.

Figure 1 shows a schematic diagram of tunneling excavation with the use of the preliminary hardening of rocks along the output.

Figure 2 shows a section along the line A-a in figure 1.

Figure 3 shows the cross-section of developing additional wells drilled to the drainage layer, formed due to the natural discharge of the rock sinking output.

Figure 4 shows a cross-section of developing additional wells drilled to the drainage layer, formed artificially by fracturing rocks or camouflet blowing.

Before the sinking of the generation 1 (figure 1) in the bottom erected insulating jumper 2, through which the route generation Buryats longitudinal and inclined wells preliminary hardening of the rock 3 length Zachodni L and the injection of them in the cementation solution. While wells 3 are placed so that the path of the driven working raspolagetsya formed inside grouting curtain, that is, to the sinking of production was carried out under the guise proDocument shell. After a set of solution required strength produce destruction and cleaning of the rock mass and erect permanent shoring of production 5.

After sinking drainage generation 1 (3) hardening selection array is produced by the discharge in sacranie space cementing fluids through wells 6, located perpendicular to the axis of manufacture. However, creating a permeable proDocument shell around 7 drainage production does not meet the conditions for effective drainage, and in some cases leads to additional hydrostatic pressure on the shoring of the excavation. Drilling behind the bottom output system of drainage wells 8 length exceeding the thickness of the hardened zone rocks, identify drainage layer with natural fractures.

The creation of an additional drainage layer 9 to form additional perforating fluid cracking around the hole parts of the drainage wells around the hardened shell is possible in three ways. The first method (figure 3) based on the development around a working zone of inelastic deformation with a high degree and of sufficient dimensions disturbed by natural discharge of the array with sinking output.

In the case of defects in the exact permeability dissected drainage layer 9 (fracture close to the fracture pristine array 10) produce an artificial increase in the permeability on the second or third method (figure 4).

The second method is based on an artificial increase in the permeability of a rock mass by geroestinenny and fracturing with the formation of the new perforating fluid of cracks. To do this in the pit drainage wells 8 create a germ slit - artificial stress concentrator 11, isolate downhole portion of the well packer 12 and serves fluid under high pressure.

The third method is based on an artificial increase in permeability by contained blasting explosive charge 13 in the pit drainage wells 8.

Thus, the creation of grouting curtain can be held and maintenance-free to maintain production in unstable watered rocks, and the formation of the selection of the drainage system allows you to keep the functionality of the drainage output, reducing the water content of the mineral deposits.

1. The method of drilling a drainage excavations in unstable flooded the rock mass, including the construction of bridges, preliminary hardening of the mountain massif along the production by drilling a longitudinal and inclined wells and pumping these wells hardening cementing solutions, destruction and cleaning of the rock mass under the protection proDocument shell, the construction of permanent roof support subsequent hardening selection array cementation the solutions through well, drilled perpendicular to the axis of generation, characterized in that behind the face through the cement layer additionally Buryats drainage wells exceeding the thickness of the hardened zone rocks, to create a drainage layer around the hardened shell.

2. The method according to claim 1, characterized in that produce an artificial increase in the permeability of the array drainage layer of rocks through education in downhole parts of the drainage wells additional perforating fluid cracking due to fracturing or contained blasting.



 

Same patents:

FIELD: mining industry.

SUBSTANCE: device has two asynchronous electric engines, connected via reducers to drive sprockets of continuous traction chain, provided with plane carriages with their possible displacement along the guide, and hydraulic cylinders for displacing guide on pit-face. To windings of stators of first and second electric engines connected respectively are outputs of first and second frequency converters, inputs of which are connected to power grid and control inputs of which are connected respectively to outputs of first and second frequency adjusters. To frequency adjusters also connected are inputs of load detectors, to outputs of which load balancing block is connected, outputs of which are connected to inputs of first frequency adjuster. To inputs of both frequency adjusters output of load adjuster is connected, inputs of which are connected to load-setting block and load sensor for second engine. To output of second frequency converter connected are input of control block, other input of which is connected to signal block of base plant, and stator winding of third asynchronous engine, which via mechanical link is connected to first and second hydraulic pumps, having constant working volumes. Output of first hydraulic pump is connected to force hydro-main and input of second preventing hydraulic valve and to first inputs of two-position hydraulic distributors with electromagnetic control, to electromagnets of which outputs of control block are connected. Second inputs of two-positional hydraulic distributors with electromagnetic control are connected to control chambers of hydro-controlled two-positional hydro-distributors, which are part of hydro-blocks. Outputs of hydro-controlled two-positional distributors are connected to opposite hollows of volumetric dosing device of each hydro-block, and their inputs are connected respectively to outputs of hydro-distributors for controlling hydro-cylinder for moving the guide on pit-face, inputs of each of which are connected to force and drain hydro-mains, and outputs are connected to piston and rod hollows of appropriate hydro-cylinder.

EFFECT: higher efficiency.

1 dwg

FIELD: mining industry.

SUBSTANCE: method includes expanding guiding pipeline by extracting soil from around it by driving shield with rotor working implement. Soil is extracted to value, surpassing needed outer diameter of shield cover. Forming ring-shaped space inside tunnel mine is compacted from back side and continuously filled with liquid. Concurrently sedimentation of extracted soil is drained from lower portion of face. Displacement of driving equipment relatively to guiding pipeline is performed along soft trajectory. Device has means for driving guiding pipeline and driving shield with rotor working implement. Rotor working implement is mounted on body of driving shield. Front surface of working implement with cutters extends beyond outer contour of shield cover, provided with back end compaction. Device is provided with fluid pump device. Force hose of pump is outputted from upward portion beyond outer contour of shield cover. Device for transporting extracted soil from face is made in form of suck-in hose connected to pump device and to lower portion of ring space beyond rotor working implement.

EFFECT: lower transverse loads on guiding pipeline.

2 cl, 1 dwg

FIELD: mining industry.

SUBSTANCE: device has frontal, two side and two conical working tools with rock-destroying tools on outer surfaces, drives, rigidly connected to axes of each working tool, and displacement mechanism, connected to guides, placed at angle relatively to each other, which angle is determined from mathematical expression. Frontal and each of side working tools are made in form of two rotation bodies, having arced forming lines with given value of convexity. Axes of frontal working tool and axes of two conical working tools are rigidly connected to guides, axes of upper rotation body of frontal working tool being displaced relatively to axis of its lower rotation body towards pit-face, and axes of each pair of side working tools are jointly connected to each other and to guides. Frontal working tool may be made in form of several modules.

EFFECT: higher efficiency.

2 cl, 4 dwg

The invention relates to the mining industry and construction, namely for the construction of tunnels of noncircular cross section by shield tunneling method

The invention relates to the mining industry and can be used with sinking underground workings of any cross-section, and assignments in the breeds of any fortress

The invention relates to a shield tunnel construction and can be used mainly for conducting small diameter tunnels

Mountain harvester // 2230906
The invention relates to the field of mining engineering and can be used in the design of mining machines

Mountain harvester // 2230905
The invention relates to the field of mining engineering and can be used in the construction of mining machines

FIELD: mining industry.

SUBSTANCE: device has frontal, two side and two conical working tools with rock-destroying tools on outer surfaces, drives, rigidly connected to axes of each working tool, and displacement mechanism, connected to guides, placed at angle relatively to each other, which angle is determined from mathematical expression. Frontal and each of side working tools are made in form of two rotation bodies, having arced forming lines with given value of convexity. Axes of frontal working tool and axes of two conical working tools are rigidly connected to guides, axes of upper rotation body of frontal working tool being displaced relatively to axis of its lower rotation body towards pit-face, and axes of each pair of side working tools are jointly connected to each other and to guides. Frontal working tool may be made in form of several modules.

EFFECT: higher efficiency.

2 cl, 4 dwg

FIELD: mining industry.

SUBSTANCE: method includes expanding guiding pipeline by extracting soil from around it by driving shield with rotor working implement. Soil is extracted to value, surpassing needed outer diameter of shield cover. Forming ring-shaped space inside tunnel mine is compacted from back side and continuously filled with liquid. Concurrently sedimentation of extracted soil is drained from lower portion of face. Displacement of driving equipment relatively to guiding pipeline is performed along soft trajectory. Device has means for driving guiding pipeline and driving shield with rotor working implement. Rotor working implement is mounted on body of driving shield. Front surface of working implement with cutters extends beyond outer contour of shield cover, provided with back end compaction. Device is provided with fluid pump device. Force hose of pump is outputted from upward portion beyond outer contour of shield cover. Device for transporting extracted soil from face is made in form of suck-in hose connected to pump device and to lower portion of ring space beyond rotor working implement.

EFFECT: lower transverse loads on guiding pipeline.

2 cl, 1 dwg

FIELD: mining industry.

SUBSTANCE: device has two asynchronous electric engines, connected via reducers to drive sprockets of continuous traction chain, provided with plane carriages with their possible displacement along the guide, and hydraulic cylinders for displacing guide on pit-face. To windings of stators of first and second electric engines connected respectively are outputs of first and second frequency converters, inputs of which are connected to power grid and control inputs of which are connected respectively to outputs of first and second frequency adjusters. To frequency adjusters also connected are inputs of load detectors, to outputs of which load balancing block is connected, outputs of which are connected to inputs of first frequency adjuster. To inputs of both frequency adjusters output of load adjuster is connected, inputs of which are connected to load-setting block and load sensor for second engine. To output of second frequency converter connected are input of control block, other input of which is connected to signal block of base plant, and stator winding of third asynchronous engine, which via mechanical link is connected to first and second hydraulic pumps, having constant working volumes. Output of first hydraulic pump is connected to force hydro-main and input of second preventing hydraulic valve and to first inputs of two-position hydraulic distributors with electromagnetic control, to electromagnets of which outputs of control block are connected. Second inputs of two-positional hydraulic distributors with electromagnetic control are connected to control chambers of hydro-controlled two-positional hydro-distributors, which are part of hydro-blocks. Outputs of hydro-controlled two-positional distributors are connected to opposite hollows of volumetric dosing device of each hydro-block, and their inputs are connected respectively to outputs of hydro-distributors for controlling hydro-cylinder for moving the guide on pit-face, inputs of each of which are connected to force and drain hydro-mains, and outputs are connected to piston and rod hollows of appropriate hydro-cylinder.

EFFECT: higher efficiency.

1 dwg

FIELD: mining industry.

SUBSTANCE: method includes erection of wall, prior reinforcement of rock massif along extraction track by drilling longitudinal and slanting wells and forcing reinforcing cementing solutions into these wells, destruction and cleaning of rocks under protection of cementing cover, erection of permanent support, following reinforcement of contour-adjacent massif by cementation solutions through wells, drilled perpendicularly to mine axis. Draining wells are additionally drilled with delay through cementing layer having length greater than thickness of reinforced rocks zone, to form a draining layer around reinforced cover.

EFFECT: higher effectiveness.

2 cl, 4 dwg

FIELD: mining industry.

SUBSTANCE: rotor is made in form of cylindrical body, on working surface of which cutter holders are radially placed, each of which is made in form of shaft, freely placed in cylindrical groove of rotor body. Along whole length of each cutter holder cutting elements are mounted with hard-alloy inserts. Between cutter holders cutting elements are placed, made in form of rectangular prisms with hard-alloy inserts.

EFFECT: higher efficiency.

3 dwg

Tunnel // 2250962

FIELD: building, particularly underground structures erected in difficult mining and geological conditions, namely in soft watered ground bedded under tunnel scoop and forming tunnel base.

SUBSTANCE: tunnel has composite lining including hollow metal members driven in ground and forming screen, load-bearing frames and grouting concrete. Metal members are connected one to another through interlocks. At least some of metal members have rigidity varying along length thereof and increasing in direction opposite to metal member driving direction. Metal members have constant outer diameters.

EFFECT: increased tunnel reliability and operational safety due to prevention of original ground deformation during tunnel building and operation; reduced ground settlement at base of tunnel built under motor road without traffic interruption, reduced building time, power and labor inputs, material consumption due to optimal material distribution along driven member in accordance with load distribution among member parts.

24 cl, 11 dwg

FIELD: construction.

SUBSTANCE: method includes making a mini-tunnel by serial pressing through, in soil with concurrent feeding of special solution, at least two hollow concrete sections connected with pressing, each of which is made with end portions open at ends, one of which is made on outer side with ring-shaped groove open from end portion, wherein metallic ring is mounted projecting beyond section end, with thickness not greater than groove depth, hollow of which together with inner hollow of end portion of section forms shelf-like cone, and other end portion of section is made stepped and narrowing towards end with forming of bushing portion with one shelf for ring of adjacent section cone and no less than with one shelf for ring compacting insert made of soft pressurizing gas and water impermeable material, tightly clinging by one side to surface of shelf, and by other - to inner surface of ring, while shelves of bushing portion are made within limits of section wall half thickness, which half is directed outwards. End portions of pipeline sections adjacent to mini-tunnel are made matching with adjacent mini-tunnel sections or transfer sections are used and/or inserts, while pipeline is connected to mini-tunnel after pressing through in soil and/or embankment of the last mini-tunnel section.

EFFECT: lower costs, higher reliability and durability.

8 cl, 16 dwg

FIELD: construction.

SUBSTANCE: method includes cleaning pipes and wells and further maintenance while providing for continuous draining of sewage by liquidating breakdowns, liquidating random obstructions, and also launching new areas of network into operation, while at least one constructed network area is driven though soil or body of existing embankment by, micro-tunneling by means of serial pressing through in soil with concurrent feeding of special solution, at least two hollow concrete sections connected with pressing, each of which is made with end portions open at ends, one of which is made on outer side with ring-shaped groove open from end portion, wherein metallic ring is mounted projecting beyond section end, with thickness not greater than groove depth, hollow of which together with inner hollow of end portion of section forms shelf-like cone, and other end portion of section is made stepped and narrowing towards end with forming of bushing portion with one shelf for ring of adjacent section cone and no less than with one shelf for ring compacting insert made of soft pressurizing gas and water impermeable material, tightly clinging by one side to surface of shelf, and by other - to inner surface of ring, while shelves of bushing portion are made within limits of section wall half thickness, which half is directed outwards. After pressing through all sections of reconstructed network portion free ends of end sections are connected to existing network.

EFFECT: higher reliability and durability, lower costs.

8 cl, 16 dwg

FIELD: construction.

SUBSTANCE: method includes continuous feeding of electric power having appropriate frequency and voltage to consumers due to maintenance operations, and also launching new areas of network into operation, while at least one of constructed network areas is driven in soil or in body of existing embankment by micro-tunneling by means of serial pressing in soil with concurrent feeding of special solution of at least two hollow concrete sections, connected to each other and to network with pressing, each section being made with open end portions, one of which is made on outer side with open circular groove at end portion, wherein metallic ring is mounted, projecting behind end piece, having thickness no greater than groove depth, hollow of which together with inner hollow of end portion of section forms shelf-like cone, and other end portion of section is made stepped and narrowing towards end with forming of bushing portion with one shelf for ring of adjacent section cone and no less, than with one shelf for ring compacting insert of soft pressurizing gas and water impermeable material, tightly clinging by one side to shelf surface, and by other side - to inner surface of ring, while shelves of bushing portion are made within limits of outward-directed half of thickness of section wall. After pressing through all sections of reconstructed network portion, free ends of end sections are attached to existing network.

EFFECT: lower laboriousness, lower costs, higher reliability and durability.

8 cl, 16 dwg

Tunnel // 2251610

FIELD: building, particularly underground structures built under difficult mining and geological conditions, namely in presence of soft watered grounds at tunnel base.

SUBSTANCE: tunnel comprises prefabricated lining including hollow metal members driven in ground and forming a screen, load-bearing frames and grouting concrete. Metal members are joined by means of locking means. At least some metal members driven in ground have constant outer diameters. At least part of above metal members are composed of sections having different lengths. Lengths of the metal members decrease in direction opposite to the driving direction.

EFFECT: increased reliability and operational safety due to prevention of original ground surface settlement during tunnel building and operation; prevention of ground settlement during tunnel building under traffic road without traffic interruption, reduced time of tunnel building, labor and power inputs, material consumption due to optimal material distribution along driven member in correspondence with loading of its sections.

21 cl, 12 dwg

FIELD: mining industry.

SUBSTANCE: method includes erection of wall, prior reinforcement of rock massif along extraction track by drilling longitudinal and slanting wells and forcing reinforcing cementing solutions into these wells, destruction and cleaning of rocks under protection of cementing cover, erection of permanent support, following reinforcement of contour-adjacent massif by cementation solutions through wells, drilled perpendicularly to mine axis. Draining wells are additionally drilled with delay through cementing layer having length greater than thickness of reinforced rocks zone, to form a draining layer around reinforced cover.

EFFECT: higher effectiveness.

2 cl, 4 dwg

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