Method of creating water-resistant filling mass

FIELD: mining.

SUBSTANCE: method includes production of filling mixture by mill technology based on clinker and zeolite as binding agent, feeding it by gravity through a pipeline system and placing in mined-out space with its preliminary partial reinforcement. At that, successive supply and placement of two solutions is performed in mined-out space on level of an excavation located below pressure water-bearing horizon: first the solutions with water-resistant properties for height of not less than 1.5 m with embedding into the host rocks, and from the top of the base layer is the low-clinker under the roof of the excavation, then a drainage drift (DD) is developed in the filling mass on the contact with the host rocks along the contour of the water-resistant layer in its lower part and drainage holes (DH) are drilled out from the drainage drift into the filling mass above the water-resistant layer for complete interception and diversion of brines.

EFFECT: provision of safe conditions for development of underlying mineral reserves due to complete interception and diversion of filtered brines.

18 cl, 4 tbl, 3 dwg

 



 

Same patents:

Cement-free binder // 2542074

FIELD: construction.

SUBSTANCE: slag includes acid electrolyte with solution density ρ=1.310 g/cm3, and slag of steel-smelting production is electric steel-smelting slag. The cement-free binder including slag of steel-smelting production, burnt rocks of mine dump and slag produced as a result of neutralisation of spent electrolytes of acid accumulators by lime, contains electric steel-smelting slag as slag of steel-smelting production, and slag contains electrolyte with solution density ρ=1.310 g/cm3 at the following ratio, wt %: burnt rocks 14, steel-smelting slag - electric steel-smelting 78, slag 8.

EFFECT: increased strength.

3 tbl

FIELD: mining.

SUBSTANCE: filling mixture compound including a binding agent, an inert filler and water, where the binding agent and the inert filler are made from ore benefication wastes, with a fraction size of not more than 20 mm, one part of which is subject to dry activation by preliminary agitation leaching, separation of a liquid phase, drying and activation in a disintegrator, and the other part is mixed with a leaching solution; the obtained pulp is activated in the disintegrator; the liquid phase is separated; a deposit is dried and a dry mixture of the compound is prepared, wt %: a binding agent - the specified product of dry activation 42, inert filler - the specified deposit 58; after that, water is added in terms of 280-290 l per 1 m3 of dry mixture; rotation speed of a working element of the disintegrator is at least 200 Hz.

EFFECT: achievement of sufficient strength at reduction of content of metals and cost.

1 ex

Stowing composition // 2531408

FIELD: mining.

SUBSTANCE: stowing composition comprising portland cement, plastifying agent, fine-grained filler - sand and water, additionally comprises as a binder the milled tailings of wet magnetic separation of ferrous quartzites with an average particle size of 2.071 microns, as a plastifying agent - superplasticiser SP-1, and the sand with an average particle size of 62.26 microns with the following ratio of components, wt %; the said cement - 13.48; the said sand - 56.43; the said wastes - 2.70; superplasticiser SP-1 - 0.138; water - the rest.

EFFECT: decrease in cement consumption, and increase in the strength of the stowing composition, use of sand with a lower fineness modulus.

1 ex, 2 tbl

FIELD: mining.

SUBSTANCE: invention relates to mining industry and may be used in development of thick edge ore bodies with unstable ores, for instance, kimberlite pipes, by the underground method. The method includes division of a deposit into panels and layers with their extraction in stopes in descending order and subsequent filling with hardening mixtures, parameters of layer stoping are increased along height and width to chamber dimensions, and along the length they are divided into sections, besides, chamber stopes and sections in the vertical-longitudinal section are given the shape of the isosceles trapezoid. Then their mining is carried out in stages so that during mining of each subsequent section the level of the haulage horizon is reduced by the height of the sectional haulage mine, for this purpose, initially, in the chamber-stop roof for all of its sections they arrange a common drilling-filling mine, and the sectional haulage mine, for each subsequent section, is mined under the filling massif of the earlier mined section, besides, after complete mining of the previous section its haulage mine in the reverse order is expanded to the width of the previously filled section, at the same time the direction of mining of chambers-stopes on each subsequent underlying layer is changed for the opposite one.

EFFECT: increased intensity of deposit mining in case of unstable ores, due to provision of stability of ore walls of stope entries during the whole period of performance of stoping works and exclusion of breaks in a filling massif, and also improved conditions for ventilation of mines.

2 cl, 1 dwg

FIELD: mining.

SUBSTANCE: invention relates to mining industry and may be used in development of thick steeply-dipping valuable ore bodies by the open-underground method. The method includes development of a pit to design depth with arrangement of the board to the limit position, mining of bottom and near-edge-zone reserves of ore with application of underground mines, transportation of broken ore in underground mines. Development of near-edge-zone reserves of the ore is carried out after extraction of bottom ones with a chamber system of development under protection of a combined rock-filling massif at the side of the pit space, besides, the rock-filling massif is formed as bottom up in layers, alternating filling of the waste rock and filling of the hardening filling mixture of the formed space between the dump and the board of the pit on each layer.

EFFECT: reduced losses and dilution in mining of near-edge-zone reserves of ore from overlying rocks.

3 cl, 1 dwg

FIELD: mining.

SUBSTANCE: invention relates to mining industry and may be used in development of mineral fields with filling of the mined space. The composition of the filling mass includes portland cement, a filler and water, besides, it additionally comprises a surfactant of a superplasticiser SP-1, and the filler is represented by stale wastes of dressing of wet magnetic separation of ferruginous quartzites and converter sludge at the following ratio of components, wt %: portland cement - 8.0; specified sludge - 12.70; specified wastes - 56.64; superplasticiser SP-1 - 0.08; water - balance.

EFFECT: exclusion of natural fillers, increased mobility of filling mass and increased volumes of recycled anthropogenic wastes for considerable improvement of environment in the region.

2 tbl

FIELD: mining.

SUBSTANCE: invention relates to mining industry, namely, to undermining of ore bodies with filling of the mined space with hardening mixes. The method to determine extent of undermining of hardening fill under mechanical damage of ore massif includes formation of a hole in the ore massif and fixation of a stiff rod in it for fixed depth, supply of hardening filling mix into the mined space, damage of the ore massif with a part of the contact layer of the hardening fill massif. When mining the ore massif, they damage the rod in the ore massif and in the contact layer of the hardening fill massif, and the extent of undermining of hardening fill is determined according to the difference in the following formula: Δ=L-L1-L2, where Δ - extent of undermining of the hardening fill massif; L - total length of blind cavity, arranged inside the rod; L1 - length of rod deepening in the hole of the ore massif; L2 - length of blind cavity that is left after damage of the ore massif.

EFFECT: invention makes it possible to determine extent of undermining of hardening fill massif.

3 dwg

FIELD: mining.

SUBSTANCE: invention proposes a preparation method of a porous hardening mixture for stowing of the mined-out underground space, which involves joint crushing and grinding of a mineral filler and a binding agent in a cone-type inertia crusher, mechanical activation of the obtained mixture, addition of water to the mixture and its supply to the stowed space. Besides, mechanical activation of the mixture is performed till water is added to it at the value of crushing force of (4÷8)·105 N. And before the mixture is supplied to the stowed space, foam is added to the stowing mixture.

EFFECT: reduction of a binding agent consumption at sufficient strength of a stowing mixture.

FIELD: mining.

SUBSTANCE: method includes tunnelling of a complex of stripping, preparatory and cutting underground mines, ore breaking and delivery, mine pressure maintenance, transportation, lifting of ore to a horizon of a ore-collecting hopper. Stopes are mined with the help of chamber systems with subsequent filling of the mined space. Tunnelling of a row of mines and process chambers is carried out outside the ore massif in foot wall rocks. Two separate mobile grinding modules are installed in process chambers, which are connected to each other by systems of transportation of a solid stowing mix components, including broken rock. The first module of coarse grinding is placed in preparatory or cut mines, and the second one - fine grinding directly above the filled space and combined with a module for mixing of the solid stowing mix, at the same time unloading from the module of fine grinding is carried out via a receiving tray and a well into the filled space. Grinding of rocks in the fine grinding module is provided to the content of - 0.074 class not below 32%.

EFFECT: invention makes it possible to improve efficiency of mining.

2 cl, 1 dwg

FIELD: mining.

SUBSTANCE: composition of a mixture for filling of mined space includes wastes of enrichment processes, lime, sodium lignosulfonate and water. The specified wastes are current tails of floatation dressing of polymetal ores with moisture of less than 30% at the following content of components, kg/m3: current tails of floatation enrichment of polymetal ores with moisture of less than 30% 1800 - 2010, lime 80 - 120, sodium lignosulfonate 1.2 - 1.5 and water - balance to 1 m3. The method to manufacture the composition of the mixture for filling of the mined space includes drying of current tails of floatation enrichment of polymetal ores to moisture content of less than 30%. Sodium lignosulfonate is previously dissolved in water, and then mixed with dried tails and lime.

EFFECT: simplified and cheaper filling mixture with preserved operating properties.

3 cl, 1 tbl

Concrete mix // 2556551

FIELD: construction.

SUBSTANCE: concrete mix contains the following, wt %: Portland cement 23.5-24.0; fine filler 56.5-58.2; polyvinylchloride chips 2.8-4.0; water 15.0-1.0.

EFFECT: improving cold resistance and strength of concrete.

1 tbl

Mastic compound // 2556542

FIELD: construction.

SUBSTANCE: mastic compound contains the following, wt %: Portland cement 40.0-45.0; quartz sand 53.3-58.25; old car tyres that are crushed and sieved through mesh No. 2.5 0.1-0.15; asbestos 0.1-0.15; sodium ethyl siliconate or sodium methyl siliconate 1.5-2.5 at water-to-cement ratio of 0.45-0.55.

EFFECT: improvement of cold resistance of a mastic compound.

1 tbl

FIELD: construction.

SUBSTANCE: high-strength concrete from the mix comprising Portland cement, silicon dioxide containing component, an additive and water contains quartz sand with the fineness modulus, Mc. = 2.6, the crushed stone is the granite crushed stone with the fraction 5-10 mm, the silicon dioxide containing component is the colloidal solution H2SiO3 with the density ρ = 1.014 g/cm3 and pH = 4±0.5 value, and the additive is the water solution with the density ρ = 1.12 g/cm3 and pH = 7.5±0.5 consisting of the mix of polycarboxylated polymers: polycarboxylated polymer on the basis of methacrylic acid with the density ρ = 0.95 g/cm3 and pH = 7±0.5, polycarboxylated polymer on the basis of allyl ether and maleic acid anhydrite with the density ρ = 1.03 g/cm3 and pH = 7±0.5, sodium gluconate C6H11NaO7 and water at the following ratio of components, wt %: polycarboxylated polymer on the basis of methacrylic acid with the density ρ = 0.95 g/cm3 and pH = 7±0.5; - 9.3-10.0; polycarboxylated polymer on the basis of allyl ether and maleic acid anhydrite with the density = 1.03 g/cm3 and pH = 7±0.5 - 10.2-10.4; sodium gluconate C6H11NaO7 - 2.6-2.8; water - 77.2-77.5, at the following ratio of components of high-strength concrete, wt %: Portland cement 21.1-23.2; the named crushed stone 41.94-42.82; the named sand 28.3-29.0; the named silicon dioxide containing component 0.12-0.13; the named additive 0.15-0.2; water 6.24-6.75.

EFFECT: increase of mobility and survivability of concrete mix.

2 tbl

Concrete mixture // 2555966

FIELD: chemistry.

SUBSTANCE: invention relates to industry of construction materials, in particular to production of concrete tiles for floors. Concrete mixture includes, wt.p.: Portland cement 1, marble crumps of fraction 2-8 mm 2-2.2, milled glass of fraction 0.1-0.3 mm 2-2.2, with water-cement ratio 0.45-0.5.

EFFECT: increase of strength.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to industry of building materials and deals with compositions of raw material mixtures, which can be used for manufacturing facing tiles. Raw material mixture for manufacturing facing tiles contains, wt %: Portland cement 17.0-20.0; crushed and sieved through net No 5 asbestos cement wastes 41.7-49.5; quartz sand 17.0-20.0, superplasticiser C-3 1.3-1.5; water 15.0-17.0.

EFFECT: increase of tile frost resistance.

1 tbl

FIELD: construction.

SUBSTANCE: concrete mixture for producing heat-resistant fire-retardant coating comprises the components in the following amount (in kg per 1 m3 of concrete mixture): artificial cement - 400; ground shungite - 50; asbestos - 15; granulated blast-furnace slag - 930; water - 295. At that, the granulated blast-furnace slag has fineness modulus Mfn = 2.98 and bulk density of 500 kg/m3, and shungite has optimum dispersion: fineness modulus Mfn = 1.43, specific surface Ssp = 320 m2/kg.

EFFECT: development of composition of concrete mixture for producing the fire-retardant coating of high thermal stability, having the improved physical and mechanical properties and allowing to improve the degree of fire resistance of reinforced concrete structures.

3 tbl

FIELD: construction.

SUBSTANCE: peat and polymer mix, comprising a base in the form of peat and and a binding element, comprises five components, wt %: nanomodified peat of suspensions of polyvinyl acetate and cyclone dust of gas treatment of air of industrial enterprises (in terms of dry polyvinyl acetate in amount of 5% from mass of peat and dust - 3%) - 25, portland cement CEM-II-42.5 - 35, sodium bicarbonate - 15, ammophos - 5 and water - 20.

EFFECT: increased strength at invariable density, increased fire resistance, reduced heat conductivity.

1 tbl

FIELD: construction.

SUBSTANCE: peat and polymer mix for manufacturing of construction products, including a base in the form of peat and a binding element, differing by the fact that it comprises the following components, wt %: nanomodified peat of suspensions of polyvinyl acetate and cyclone dust of gas treatment of air of industrial enterprises (in terms of dry polyvinyl acetate in amount of 4-6% from mass of peat, dust - 2-3%) - 25%, portland cement CEM-II-32.5 - 35, calcium chloride - 10, ammophos - 5 and water - 25.

EFFECT: increased fire resistance and strength characteristics at invariable density, reduced heat conductivity, increased homogeneity of structure and durability of heat insulation material.

1 tbl

FIELD: construction.

SUBSTANCE: peat and polymer mix for manufacturing of heat insulation products, including a base in the form of peat and a binding element, comprises four components, wt %: nanomodified peat of suspensions of polyvinyl acetate and cyclone dust of gas treatment of air of industrial enterprises (in terms of dry polyvinyl acetate in amount of 4-6% from mass of peat, dust - 2-3%) - 25%, portland cement CEM-II-32.5 - 40%, sodium carbonate - 10% and water - 25%.

EFFECT: increased fire resistance and strength characteristics at invariable density, reduced heat conductivity, increased homogeneity of structure and durability of heat insulation material.

1 tbl

FIELD: oil and gas industry.

SUBSTANCE: lightweight plugging material contains cement PTsT-I-100, lightweight - expanded vermiculite, technical salt, chemical agent Crep, at the following ratio in wt %: cement PTsT-I-100 - 84.75; vermiculite - 9.42; Crep - 1.13; NaCl - 4.7. During the cement slurry preparation - expanded vermiculite, technical salt.

EFFECT: exclusion of the hydraulic fracture during wells cementation due to improved parameters of the packing cement, increased strength of cement stone at low and moderate temperatures at early stage of solidification upon simultaneous density reduction of the cement slurry.

1 tbl

FIELD: manufacture of building materials.

SUBSTANCE: invention relates to dry building mixes for finishing of surfaces of concrete, stone, plaster, gypsum-cardboard, ceramics, metal, and wood. Filling contains, wt %: marshalite 60-65, white or gray Portland cement 30-35, latex in the form of re-dispersible powder 1-5, and additionally methylcellulose mixed esters. Filler further comprises additional ingredients selected from pigments, mineral additives, air-entraining agents, foam suppressors, waterproofing agents, structure-forming fillers: coarse sand, fibers, mineral or synthetic crumb, and setting accelerators (1-5% in total).

EFFECT: improved environmental compatibility.

3 cl, 2 tbl

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