Composition for plugging drowned fractured rocks
(57) Abstract:The invention tositsa to mining, in particular to the plug, and is designed to create a waterproofing veils flooded in fractured rocks at low and subzero temperatures of the rocks. The purpose of the invention is the improvement of the quality of water shut-off and a wider range of temperatures companyremoval array of cement composition on the basis of waste hydraulic processing diamondiferous rocks. The objective is achieved by the fact that in cement mortar containing waste hydraulic processing diamondiferous rocks, cement, sodium chloride and water, optionally enter a ground zeolite in the following ratio, wt.%: waste hydraulic processing diamondiferous rocks 22,85 - 30,65; cement 7,25 - of 10.58; zeolite 2,41 - of 10.58; sodium chloride 0,59 - 16,58; water the rest. table 1. The invention relates to mining, in particular for plugging watered fractured rocks to create a waterproofing curtains at low and subzero temperatures of the rocks.Known composition for plugging , comprising aluminous cement and zeolite as an additive governing the kinetics of strukturanalyse , includes wt.%:
containing rocks 26,1-31,0
The cement of 12.5 to 13.1
Sodium chloride 4,7-5,5
Water the Rest
The composition capable of hardening under conditions of saline water at subzero temperatures, however, has some limitations on the application. So, due to the low kinetics of structure formation its successful application is guaranteed only in the peripheral zones of fracture. In areas of the same tectonic faults composition is not effective. In addition, the mineralization (89,0 kg of sodium chloride in 1 m3mud is insufficient when working in horizons with temperatures below -7aboutAt a temperature above -7about(Deep horizons in the permafrost) this mineralization is unnecessary.The purpose of the invention is improving the efficiency of water shut-off and a wider range of temperatures companyremoval array.The goal is achieved in that the composition additionally injected powdered zeolite in the following ratio, wt.%:
processing elmatador - containing rocks 22,85-30,65 Cement 7,24-Of 10.58 Zeolite 2,41-Of 10.58 Chloride natih (90aboutC) and negative (up to -21,2aboutC) temperatures.Preparation of composition for plugging is as follows.From prodovol part of hydraulic mine dump selected waste processing plant; selected, the suspension is adjusted to a density 1240-1330 kg/m3; the resulting suspension is injected sodium chloride in an amount necessary to prevent freezing at a given temperature, but in the range of 10.0-258,3 kg per 1 m3suspension; mixing the cement with powdered zeolite with a ratio of cement: zeolite from 1:0.3 to 1:1; after complete dissolution of sodium chloride in the suspension is injected under stirring cement-zeolite mixture in an amount of 160-360 kg per 1 m3suspension.The specified content of the components corresponds to the limits of the optimal composition for plugging. The optimum content of the components installed on the basis of the necessary requirements for the properties of cement composite systems on their pumpability and structural-mechanical characteristics of the established Norms of technological designing WNTP-6-76.In table. 1, 2, 3 shows comparative data of the main parameters of cement slurry composition of the prototype and of the exploring of the document.As can be seen from the above data, the main parameters of the invention and within the optimal proportions of the components satisfy regulatory requirements. Moreover, by increasing the content of zeolite in the proposed composition of the plastic increases strength after 4 h of stabilization.Fast curing will allow using the minimum amount of materials to create grouting curtain in zones of tectonic faults, cracks large erection.At the same time if it is not necessary to achieve rapid curing, it is possible to obtain a mixture with characteristics similar to the properties of the prototype with less consumption of cement.When the content of components in the compositions is less than the lower optimum limit the risk of leaching solution from cracks in the dynamic pressure of the groundwater due to the low values of initial plastic strength and static shear stress. Plastic strength after 10 days also below standard.When the content of component greater than the upper optimum limit the initial SNA and plastic strength does not satisfy the condition pumpability and can not be applied, in spite of negative temperatures showed the resilience of the invention at temperatures down to -20aboutWith at the appropriate mineralization of the initial suspension.The structure of the prototype is stable at a temperature of 0 to +5aboutWith, where salinity is excessive and when t = 4 - -7aboutFrom where mineralization corresponds to the freezing in this area. At -18aboutWith the composition of the prototype freezes. Freezing clinicamente mixture is accompanied by a significant increase, which may lead to an increase in the duty cycle of the array.Thus, a new composition for plugging is more effective water shut-off in terms of large cracks opening and has a wider range of application temperature of a rock in comparison with the composition of the prototype and other famous Tampa - capacity solutions. COMPOSITION FOR PLUGGING DROWNED FRACTURED ROCKS, including waste hydraulic processing diamondiferous rocks, cement, sodium chloride and water, characterized in that, to improve the efficiency of water shut-off and expansion of the temperature range companyremoval array, the composition further comprises zeolite in the following ratio, wt.%:
Waste hydraulic processing almazosoderzhashchego
FIELD: mining industry, particularly to protect mine workings against underground water ingress.
SUBSTANCE: method involves drilling injection wells along pit shaft perimeter; widening cracks by supplying high-pressure water and injecting grouting mortar in the cracks; additionally boring vertical preparation well in pit shaft center. Cracks are widened by feeding water and then air or only water in vertical preparation well. Water and air are supplied under pressure lesser than pressure of hydraulic rock fracturing. Grouting mortar is injected in cracks by forcing thereof through injection wells immediately after finishing of feeding water or air in vertical preparation well. Cryogenic gel is used as the grouting mortar. Cryogenic gel is foamed before injecting thereof in wells and foamed cryogenic gel is forced into cracks beyond the pit shaft perimeter by supplying compressed air in vertical preparation well. After leaving pit shaft as it is for grouting mortar setting time wells are sunk for the next grouting step depth and above operations are repeated up to reaching the lower boundary of pit shaft interval, wherein injection is performed under pressure exceeding that on previous step.
EFFECT: reduced labor inputs and material consumption along with increased efficiency of water suppression.
3 cl, 3 dwg, 1 ex
FIELD: mining industry, particularly elimination of emergency situations.
SUBSTANCE: method involves closing borehole cross-section with extendable means; arranging predetermined volume of non-combustible material above the means, wherein the volume is determined from a given relation; discharging all non-combustible material in the borehole at a time and further distributing portions of non-combustible material having volumes of not less than volume of incoming water. Non-combustible material includes clay and pourable components which are laid in layers above the means, wherein clay volume is equal to pore volume of pourable component.
EFFECT: increased reliability of borehole sealing and water burst liquidation.
3 dwg, 1 ex
SUBSTANCE: water-proofing sheet comprises three layers. The first layer provides mechanical strength of the sheet and is made of elastometer polyethylene of high strength and flexibility. The second layer is intermediate one, represents the connection between the first and second layers, and is made of foam plastic with closed pores. The third layer is made of a impermeable plastic material which possesses high resistance to breaking. The tensile strength, breaking elongation, and thickness of the sheet range from 24 MPa to 39 Mpa, from 550% to 900%, and 3 mm to 50 mm, respectively.
EFFECT: enhanced reliability.
5 cl, 2 dwg, 3 tbl
FIELD: mining industry.
SUBSTANCE: backfill fibrosolution consists of concrete, argil, fibers and water, as fibers solution contains synthetic filaments with diameter 0,1-0,15 mm and length 10-20 mm in amount of 10-20 kg for 1m3 of argil-cement mixture, subjected to electrification with induction of static electric charge.
EFFECT: possible backfill of extensive fractured systems with active influx of water, increased hardness of backfill material, decreased material costs of reinforcement of fractured rocks, removal of water influxes in mines.
FIELD: mining, particularly mining and pit protection against underground water inflow in the case of open-pit kimberlite pipe and other mineral deposits development in subpermafrost horizon.
SUBSTANCE: method involves discharging water initially contained in deposit section to be developed and precipitation water from said deposit section; drilling injection wells around kimberlite pipe perimeter and performing explosions through regular system from pit bottom to create joined subvertical annular and subhorizontal rock fissured zones which have uniform fissures; supplying plugging materials therein and creating joined solid watertight diaphragms shaped as integral cups.
EFFECT: possibility to create watertight diaphragm, which protects deposit section to be developed against underground water ingress.
FIELD: mining and pit protection against underground water inflow in the case of open-pit kimberlite pipe and other mineral deposits development in subpermafrost horizon.
SUBSTANCE: method involves discharging water initially contained in deposit section to be developed and precipitation water from said deposit section; drilling injection wells around kimberlite pipe perimeter and from pit bottom; performing explosions in wells surrounding kimberlite pipe perimeter and carrying-out hydraulic fracturing from wells drilled from pit bottom to create jointed subvertical and subhorizontal rock fissured zones, which have uniform fissures; supplying plugging materials therein and creating joined solid watertight diaphragms shaped as integral cups.
EFFECT: possibility to create watertight diaphragm, which protects deposit section to be developed against underground water ingress.
SUBSTANCE: method comprises leaving of massifs of minerals 14 between chambers 7-13, driven at extraction of potassium salt bed 1, and filling chambers with backfill material. Bores 6 are drilled from ground surface 5 to chambers; the bores are cased with tubes. Not soluble in water backfill material is supplied into chambers via bores 6 till chambers are filled for their complete height at a point of backfill material supply. The first to be filled are chambers 7 located at proximity to the underground water inrush zone 4 from the side of the bed rise 1 of potassium salt; thereafter filling of chambers 8-10 located below underground water inrush 4 is carried out. Not solved in water, hardening, backfill materials are supplied into chambers 7-13 via bores 6. If filed chambers driven along the course of bed chambers have considerable length, the distance between bores is determined from a calculated expression.
EFFECT: invention facilitates prevention of flooding of potassium mine and hazardous deformation of the earth surface at breaks of water protective strata and underground water inrushes into mine through water permeable cracks generated in water protective strata in areas of geological disturbances.
3 cl, 2 dwg
SUBSTANCE: invention relates to strengthening of the lower part of the section of the railroad tunnel and may be employed for strengthening of bases of buildings and constructions. Method includes feeding of mortar with filling agents. A shaft is drilled in the lower part of the section of the railroad tunnel above the detected emptiness for feeding of filling material and a second shaft for feeding of consolidating mortar. Feeding device is installed and filling material is supplied through it in the form of balls of waterproof material, density whereof equals or is greater than water density. Balls are compressed by means of a vibrations generator; entrained water is pressed out from the emptiness by balls either through holes in the rock or through the consolidating mortar feeding shaft. Having filled the emptiness with balls, feeding device is taken away and the shaft is sealed, consolidating mortar is supplied into the second shaft and having filled all the emptiness the shaft is sealed. Should there be no water in the emptiness one shaft is drilled in the lower part of the section of the railroad tunnel; where through emptiness are filled with balls compressed by a vibration generator, after that feeding device is taken away and consolidating mortar is supplied through the shaft. Emptiness been filled the shaft is sealed.
EFFECT: cost reduction of elimination of emptiness.
2 cl, 1 dwg
SUBSTANCE: invention refers to mining and is designed for elimination of hazardous situation at instantaneous inrush of water. Massif of rock is bored around with bore holes and outpost blast holes in vicinity of a groove head. Clay material is stacked inside the contour. Explosive substances are inserted in bore and blast holes; and explosion is initiated.
EFFECT: reduced time and material costs for preparation of non-combustible material to simultaneous discharge.
1 ex, 2 dwg
SUBSTANCE: device consists of panels, supports and water intake chute. The panels have U-shaped flanged cross sections. The flanges and ribs of panels are different with regard to the required width and height along the corresponding sides of U-shaped cross section. The upper support to the bearing lining fastener assembly and lower panels to support fastener assembly are spatially distanced and implemented so that canopy panels and effective canopy hanger can be remotely adjusted to the bearing tunnel lining regardless canopy panels width and lining elements width dimensions. The upper fastener assembly is provided with supporting element for assembling pin, for example, pivot block, with one end being fixed to the bearing lining by means of fastening element, for example, bolt and/or threaded pin and/or anchor. The other end is coupled with the assembling pin, by means of, for example, a pair of nuts with spherical surface and beveled washers. The lower panel to support fastener assembly is made from the supporting element and clamping element for panels and installed on the assembling pin. The panels are installed and fastened to ensure the required architectural geometry of arch and overflow conditions in the lower panel fastener assembly for water penetrating through the lining. The position of the lower fastener assembly is adjusted by the upper fastener assembly. The invention provides for different structural implementation of the upper fastener assembly and specific features of U-shaped panel profiles and lower fastener assembly for the includes tunnel and horizontal tunnel.
EFFECT: possibility of spatial assembling pin position adjustment and installation of canopy panels in designed position regardless arch configuration inaccuracies in underground structure; more effective, reliable and simplified hanger for canopy to be attached to bearing lining notwithstanding canopy panel width and lining width ensuring conditions of penetrating through lining water.
15 cl, 20 dwg