477 results about "Pit water" patented technology

The invention discloses a water conservation method for overlying strata water flowing fracture main channel through ground horizontal directional drilling grouting and sealing, which is suitable forthe technical field of water resource conservation in coal mining and mine water damage prevention and control. The method includes the following steps: firstly obtaining development characteristic information of the mined height of the overlying strata water flowing fractured zone in a tested area under specific mining conditions; then according to the development characteristic information, determining the distribution range of an aquiclude area of the overlying strata water flowing fractured zone communication stratum corresponding to the water flowing fracture main channel in the tested area; lastly, after determining position and orientation of the water flowing fracture main channel, constructing horizontal directional drilling on the ground and grouting and sealing the water flowingfracture main channel, thereby achieving the goal of reducing water conductivity of the fracture and conserving groundwater resources. The water conservation method has the advantages of simple steps, reliable effect and strong practicability.

The invention discloses a method and system for high-efficiency recovery of high-salinity mine water. The method comprises the following steps: removing colemanite, bicarbonate radicals and suspended solids by using a high-density clarifying pond to reduce reverse osmosis structure tendency; subjecting concentrated reverse osmosis water to chemical softening pretreatment to remove easily fouling components; and carrying out solid-liquid separation by using a tubular micro-filtration membrane and allowing separated liquid to enter into a concentrated water reverse osmosis unit. According to the invention, the concentrated reverse osmosis water undergoes chemical softening pretreatment to remove the easily fouling components, the tubular micro-filtration membrane is employed for solid-liquid separation, the separated liquid directly enters into the concentrated water reverse osmosis unit without treatment by other filtering units, so operation process flow is simplified, a land occupation area is reduced, designed flux is great, and a good effluent effect is obtained. The tubular micro-filtration membrane used in the invention is different from other micro-filtration or ultra-filtration membranes; the tubular micro-filtration membrane runs in a cross flow mode, water flow tangentially flows through the surface of the membrane at a high speed, thereby realizing scouring and cleaning of the membrane surface while carrying out filtering, and the membrane surface is hardly contaminated.

The invention discloses an underground processing system of mine water, which is arranged underground and comprises a deposition system, a filtering system, an anti-scale system, a water supply system and a backwashing device; wherein, the reusable clear water is obtained from the mine water firstly through the sedimentation of the deposition system, then the filtration of the filtering system and the anti-scale of the anti-scale system; the deposition system comprises a flow tank; the filtering system comprises a primary filter and a fine filter; the anti-scale device of the anti-scale system is an electron type or a permanent magnet type; the backwashing device is used to wash the filtering system. The flow tank comprises an even flow area and a skew plate area, and the mine water is deposited from the even flow area to the skew plate area. The fine filter with double filters is provided with a nutshell filter and a ceramisite filter. The invention is more particularly suitable for water treatment of coal mine and the underground treatment to coal mine with high suspended solids and mine water containing iron and manganese. The invention has the advantages of simple structure, low cost, high efficiency and safety.

The invention belongs to the field of water treatment, and particularly relates to a process for treating mine water in high efficiency. The process comprises the following steps that: the mine water is subjected to preliminary sedimentation homogenization; large-particle solids in the mine water are removed by pre-treatment; and the mine water is subjected to ceramic membrane ultrafiltration to obtain the treated mine water meeting standards of the domestic water. The process has the advantages that: the route is short, the process is simple, and the floor space is small; the coagulation procedure and the flocculating sedimentation are unnecessary, so that the problem of low temperature inactivation of a flocculant does not exist; due to the adoption the ceramic membrane, the problems of easy pollution and difficult cleaning of the organic membrane are well solved, and the service life of equipment is long; and the labor intensity is low, the working efficiency is high, not only the mine water can be reasonably treated for reutilization, but also coal slime is recovered, so that no pollution and zero emission is realized.

The invention discloses an integrated information system for monitoring, early warning, management and control of mine water disasters. According to the integrated information system, data of a mine geophysical prospecting data acquisition subsystem, a chemical prospecting data acquisition subsystem and a water disaster prevention, treatment, monitoring and early warning subsystem are sent to a monitoring central server through a communication network. The mode that devices such as an existing geophysical prospecting system, an existing chemical prospecting system and an existing water disaster prevention, treatment, monitoring and early warning system operate singly and data cannot be shared is changed, each water disaster prevention and treatment device is used as a networked intelligent data terminal, data of the intelligent data terminals are acquired by monitoring servers arranged in a mine, a group company and a remote data center, powerful functions such as data real-time storage, dynamic analysis and intelligent judgment are provided for the mine, the Chinese integrated information system for prevention, treatment, management and control of water disasters is established, automatic, networked, intelligent and systematized operation of key mine water control devices used for detection, discharge, drainage and the like is achieved, professional, process and automatic water control and management are achieved, and scientification of decision-making is achieved.

The invention fine/slurry coal slime auto cleaning technique and its device is most adaptive to cleaning the mixture of coal slurry and water in water bin in mines. By applying extracting, buffering, dehydrating, loading and other method, adopting the devices needed at each process, controlling with switches, the auto cleaning of coal slime in water bin in mines is acquired, removing the tough task of cleaning the water bin by human power, improving the piling enviorment, while lowering the number of new water bin needed, improving the general economic performance, moreover protecting the environment. Its device is rational adopted, and of long service life, time and power saving, and highly practical.

The invention discloses a recycling and treating method for mine water containing suspended substances, which comprises the following steps of: (1) regulating water quantity by introducing the mine water into a regulating pond; (2) coagulateing and precipitating, carrying out flocculation reaction and precipitate separation in a compositive reaction pond to remove most suspended substances; (3) filtering, and introducing the solution into a clear water pond after filtration in a sand filter and sterilization with chlorine dioxide to obtain drinking water meeting drinking water standards. The invention is suitable for mine water containing more suspended substances and containing oil pollutant, removes the suspended substances at the removing rate higher than 98.5%, and has the advantages of simple equipment and operation process.

The invention relates to the technical fields of sandy soil seepage failure and mine hydrogeological test, in particular to a test device and method for monitoring of a sand inrush process induced by mining and related engineering under a simulation test condition. Based on a mine water disaster comprehensive simulation system and test method for automatic mining with high water pressure and high stress (application number: 201010285897.9), the device consists of a variable sand inrush opening and sand stop plug module, a lateral water source replenishment module, a sand inrush process monitoring module and a sand inrush collection and test module, and is characterized in that sand inrush test conditions of different vertical loads, low-seepage cover coats of different thicknesses and characteristics, different initial boundary water heads, dynamically changing cone of depression, different water-containing sand layer thicknesses and grain composition and different sand inrush fracture sizes and gradient monitoring conditions for seepage damage range, sand inrush and water inflow, water head and hydraulic power in a sand inrush process can be provided, and meanwhile sand inrush testing parameters are acquired; the test method is characterized by being an infinite boundary-based water head control and vertical load adjustment and control method, a sand inrush range recognition method and a determination method for weight and volume of the sand inrush and the actual water inflow.

The invention relates to a method for treating high-arsenic gold concentrate, which belongs to the technical field of metallurgy. Arsenic-resistant bacteria of the invention are arsenic-resistant thiobacillus ferrooxidant (CCTCCCNO: M2010072) which are obtained by breeding and domesticating thiobacillus ferrooxidant-containing high-arsenic gold concentrate acid mine pit water. The method for treating the high-arsenic gold concentrate by using the arsenic-resistant bacteria comprises the steps of expanding and culturing the bacteria, performing paste mixing on the high-arsenic gold concentrate, performing bacterial oxidation treatment, acidizing to remove arsenic, cyaniding to extract gold, recovering the arsenic and the like. Compared with the conventional method for pretreating high-arsenic gold ore, the method for treating the high-arsenic gold concentrate has the advantages of efficiently recovering noble metal gold, recycling the side product, namely arsenic, solving the environmental problem of high arsenic content of sewage and waste residues subjected to the bacterial oxidation process treatment, reducing the consumption of a cyaniding medicament, increasing the gold-extracting ratio of the high-arsenic gold concentrate and contributing to the environmental protection and the sustainable development of the huge-reserve high-arsenic gold concentrate in China.

The invention discloses an immersed tube drainage structure, and further discloses a method for handling suddenly-produced foundation pit water bursting and fountains through the immersed tube drainage structure. When the water bursting phenomenon obviously occurs in a foundation pit and mud is sprayed out, landfill is conducted through original soil within the range of a core tube which has been dug, and then well digging and water pumping are conducted. A plurality of wells are formed for the core tube, and shaft bottom elevations are reduced till the shaft bottom elevations are below the natural ground and extend into high-water-content layers; after formation, a submerged pump is placed in each well to conduct water pumping; the upper openings of the wells are connected to form a water pumping network so that underground water can be pumped to a drainage system on the upper edge of the foundation pit; digging is continued after water inside the well is lowered below the foundation bottom elevations of the core tube; in the digging process, water pumping systems of the water pumps keeps working, blinding concrete pouring is conducted instantly after earth excavation conducted on the portions is completed; after pouring, the water pumping systems of the water pumps in the wells stop working after the raft foundation concrete pouring is completed and the strength reaches 75% of the designed strength. The drainage construction method is simple in process, and construction cost of foundation pit drainage construction can be effectively reduced.

The invention relates to a CT sealed steel pipe pile foundation pit water stop supporting device and a construction method thereof. The CT sealed steel pipe pile foundation pit water stop supporting device comprises a closed water stop curtain which is formed by enclosing steel pipe piles, and a supporting structure, wherein the supporting structure comprises at least two internal enclosing purlins and internal supports; the internal enclosing purlins are tightly adhered to the internal surfaces of the steel pipe piles through the internal supports; each steel pipe pile comprises a main steel pipe and an occluded steel pipe; occluded I-steel is welded on the external surface of the main steel pipe; and the occluded steel pipe is externally tangent to the main steep pipe and is welded on the external surface of the main steel pipe through a connecting steel bar. The device has the advantages of simple structure, smart concept and good water stop and supporting effects, and can be widely applied to the water stop and supporting of a soft formation, an artificial sea reclamation formation, an artificial hydraulic reclamation riprap formation and the like with the excavating depth of 8 to 15m.

The invention provides a process for the advanced treatment of mine water, which comprises the following steps of: carrying out primary precipitation on the mine water; carrying out coagulation on the mine water which is subjected to the primary precipitation; clarifying the mine water which is subjected to the coagulation; filtering the clarified mine water; adding acid into the filtered mine water; aerating the acidified mine water; carrying out electric adsorption desalination on the aerated mine water; and disinfecting the desalinated mine water. The invention further provides a system for the advanced treatment of the mine water, and the system comprises a primary precipitation tank, a clarification tank, a first filtering device, an aeration tank, an acid tank, an electric adsorption module and a disinfector, wherein an inlet of the clarification tank is communicated with outlet water of the primary precipitation tank, an automatic coagulant adding system is arranged at the inlet of the clarification tank, an inlet of the first filtering device is communicated with the clarification tank, an inlet of the aeration tank is communicated with an outlet of the first filtering device, an outlet of the acid tank is communicated with the aeration tank, acid can be added into the aeration tank through the acid tank, an inlet of the electric adsorption module is communicated with an outlet of the aeration tank, and the disinfector is communicated with a purified water outlet of the electric adsorption module. According to the process and the system for the advanced treatment of the mine water, the salinity of the mine water is effectively lowered.

The present invention discloses one kind of mine water deeply purifying method and apparatus capable of purifying mine water to reach drinking water standard and utilizing mine water resource effectively. The method includes two parts, flocculating and microfiltering, and nanofiltering; and the corresponding apparatus includes a flocculating and microfiltering reactor and a nanofiltering film filter mainly. The main technological conditions include flocculant throwing amount of 5-30 mg/L, filtering diameter of the microfiltering film of 0.1-10 micron, negative pressure for sucking of 0.05-0.2 MPa, the MgSO4 intercepting rate of the nanofiltering film of 95.0-99.0 %, and operation pressure of 0.4-1.0 MPa. The present invention can realize automatic control and mobile treatment, and is suitable for deep purifying treatment of different types of mine water.

The invention discloses a distributed underground reservoir group and a transfer method for mine water in the distributed underground reservoir group. The distributed underground reservoir group comprises more than two underground reservoirs; and the underground reservoirs are respectively connected through water conduit pipelines. According to the distributed underground reservoir group and the transfer method for the mine water in the distributed underground reservoir group, which are provided by the invention, the water conduit pipelines are established among the underground reservoirs and are used for transferring, controlling and centrally draining the mine water in the underground reservoirs, and thus underground water is effectively utilized. Meanwhile, as for the underground reservoirs in different coal seams, the underground mine water is transferred during exploitation, and thus the outside drainage of the mine water during exploitation is avoided and the waste is reduced.

The invention relates to a high-salinity coal mine water standard treatment and resource utilization device and a use method thereof. The device comprises a homogenizing adjusting tank, a high-densityclarification tank, a gravity type filter tank, a sodium bed device, an ultrafiltration device, a reverse osmosis device, a recycled water tank, an ozone reaction tank, a concentrated water high-density clarification tank, a multi-media filter, a concentrated water weak acid resin bed, a concentrated water ultrafiltration device, a nanofiltration device, a nanofiltration produced water reverse osmosis device, a strong brine tank, a nanofiltration produced water evaporation concentration device, a sodium carbonate decahydrate freezing crystallization device, a sodium chloride evaporation crystallization device, an impure salt crystallization device, a nanofiltration concentrated water tank, a nanofiltration concentrated water evaporation concentration device, a sodium sulfate decahydrate freezing crystallization device, a resin regeneration waste liquid storage tank, a calcium sulfate settling tank, a calcium sulfate dehydrator and the like. The device has the advantages that the structural design is reasonable, consumption of softening agents for mine water desalination treatment is reduced, the system reliability is improved, the additional value of salt products is increased, and maximum utilization of resources is achieved.

The invention discloses an iron and manganese removal modified filter medium which takes volcanic rock as a carrier, as well as the preparation method thereof. The carrier of the modified filter medium is the volcanic rock coated with a polycondensate modifier. The volcanic rock is firstly pretreated by an acidic reagent, and then the pretreated volcanic rock is coated with a polycondensate modified mixed liquor, thereby realizing the modification to the volcanic rock. The modified volcanic rock filter medium can have better removal effect on iron ions and manganese ions in the neutral or the slightly acidic environment, thereby effectively removing the iron ions and the manganese ions in the mine water, realizing the resource recovery of the mine water and relieving the water using problem existing in the arid water shortage area; and the starting time is short, thereby having good effect on removing the heavy metal ions and the chroma in the industrial wastewater.

The invention discloses a downhole treatment and reuse device and method for mine water. The device comprises a natural self-cleaning mechanism, a first filtering mechanism, a COD detection mechanism, a dosing coagulation mechanism, a second filtering mechanism and a water supply mechanism. The first filtering mechanism, the COD detection mechanism, the dosing coagulation mechanism, the second filtering mechanism and the water supply mechanism are arranged on a downhole abandoned roadway. Water quality tests of the filter liquor in the first filtering mechanism are performed by the COD detection mechanism. The device is arranged on the downhole abandoned roadway, the problem that mine water is lifted out from mines and the treated water is discharged into mines to be used again is avoided, and the defects of land occupation, pollution and long-distance pipelining and the like, when mine water is treated on ground, are overcome. The downhole space is utilized fully and the treated water can be used at downhole operation places directly, and the rest water can be discharged onto ground to be used. The device reduces the cost of borehole operation, saves resources, and is efficient and safe. The device can be suitable for treatment of mine water of coal mines with worked-out sections, and especially is suitable for treatment of high-mineralized mine water and high-suspended matter mine water.

The invention discloses a modified flame-retardant composite resin, a pipeline for pit water and a preparation method thereof. The resin comprises the following components in parts by weight: 80-100 parts of polyethylene and polypropylene mixture, 40-50 parts of aluminum hydroxide or magnesium hydroxide, 5-10 parts of polycarbonate, 5-10 parts of carbon black, 3-6 parts of ethoxylated alkylamine and 1-2 parts of trinonylphenyl phosphite. The pipeline for pit water comprises a metal pipe body and a modified flame-retardant composite resin coating applied onto the surface of the metal pipe body. The pipeline for pit water disclosed by the invention can effectively prevent the metal pipe from corrosion, has high strength ratio, and can satisfy the requirements for application in pits.

The invention discloses an underground mine water treatment method. Mine water passes through a cyclone degritting tank first, enters a coagulation tank after larger coal particles are removed, and then enters a mixing tank after alum flocs are formed when chemical flocculating agent is added into the coagulation tank, and meanwhile, organic coagulant aid and coal ash with certain particle size or smashed coal gangue with certain particle size are added into the mixing tank, sludge and water are separated after compact flocs are formed in a sedimentation tank. Water discharged from the sedimentation tank can be used for underground production or be lifted to the ground for recycling, and solid matters separated in the cyclone degritting tank and the sedimentation tank can be backfilled tounderground discarded roadways. The method is small in occupied area and high in treatment efficiency, no ground area needs to be occupied, underground mine water treatment and recycling can be realized, costs of power equipment and pipeline delivery for the mine water lifting and recycling underground can be reduced, and energy consumption and flocculating agent usage can be reduced. Further, the coal ash or coal gangue which belongs to normal solid wastes in mining areas can be completely used, so that treating wastes with wastes is realized.

A machine for removing sump pit water with sump ejector mounted at the same elevation as the discharge pipe, eliminating back pressure which reduces pumping rates, sump ejector system with an adjustable timing control allowing the pump to run for various lengths of time, a independent discharge line, sump ejector with an independent suction line, sump ejector with an internal check valve, sump ejector with an atmospheric vent preventing backflow, and sump ejector with integral backflow prevention device.

The invention discloses an automatic water level monitoring device in a foundation pit water level observation well. The automatic water level monitoring device comprises a floater, a plumb and a measuring line with length identification. The plumb is tied on the floater, the floater is tied at one end of the measuring line and then placed in the foundation pit water level observation well, the automatic water level monitoring device further comprises an elastic stretching unit, an automatic recorder and a data processor, the other end of the measuring line passes between an upper meshing wheel and a lower meshing wheel in the automatic recorder and is connected with the elastic stretching unit which can be stretched by sensing tension on the measuring line, and water level altitude data can be obtained by the data processor according to received moving variation values of the measuring line recorded by the automatic recorder. The automatic water level monitoring device greatly reduces work load of manual measuring, can achieve automatic, real-time and continuous monitoring, improves accuracy of monitoring and improves working efficiency.

The invention relates to the field of municipal rail traffic construction, and especially relates to a subway sand layer open cut pit construction method. The subway sand layer open cut pit construction method comprises the following steps: underground diaphragm wall, high pressure jet grouting water-head pile, three-axis mixing pile, foundation uplift pile, underground draining well, observationwell outside a pit, earth excavation, steel shotcrete erection, substrate treatment, waterproof construction, and structure construction. Through the underground diaphragm wall and steel shotcrete, aclosed integrated is formed, and foundation pit water leakage effect is greatly improved. The method ensures smooth construction of a subway foundation pit in a narrow space region in a city. Using the open cut pit method, subway open-cut station construction is safer and more efficient.

The invention discloses a segmented drainage method of an open pit mine. An open pit bottom water sump (6) is arranged at the open pit bottom, and an immersible pump (1) is arranged on an open pit platform above the open pit bottom water sump (6). The segmented drainage method is characterized in that a chamber (8) is horizontally constructed on an open pit platform side slope (10) above the position of a conventional fixing pump station water pump (2), and the position of the chamber (8) should avoid faults; a chamber water sump (5) is downward constructed in the chamber (8), and a chamber fixing pump station water pump (3) is installed in the chamber (8); and the immersible pump (1) pumps open pit water catchment which is intensively converged into the open pit bottom water sump (6) intothe chamber water sump (5) in the chamber (8), and then pumps (3) from the chamber fixing pump station water pump (3) to the outside of an open pit. According to the segmented drainage method of theopen pit mine, partial side slope mines can be mined and the ore loss is reduced; and meanwhile, the chamber fixing pump station water pump (3) is not affected by earth surface meteorological conditions, side slope rolling stones and the like, and a fixing pump station water pump house does not need to be built.

The invention relates to a mine water distributary deep treatment device, which comprises a preliminary filter tank, a centrifugal sedimentation system, a water storage transfer box, a four-way magnetic control valve and a data acquisition and control system. A natural water plant blocking mechanism is arranged at the lower part of the preliminary filter tank; a sieve coarse filter mechanism is arranged at the upper part of the preliminary filter tank; the bottom part of the preliminary filter tank is connected with a water inlet of the centrifugal sedimentation system through a first water pipe; a first valve and a first water pump are arranged on the first water pipe. According to the mine water distributary deep treatment device provided by the invention, deep distribution and multilevel treatment of mine water are realized, sediment, coal dust and oil matters in the mine water can be filtered, heavy metal ions, sulfate radical and sulfite ions, nitrate and nitrite ions in the mine water can be filtered through microbiological treatment, a treatment process is fine and perfect, different microbial strains are adopted for treating and removing heavy metal ions, the effluent quality is good, with water resource quality-based utilization, the utilization ratio is improved, and with distributary treatment, the treatment efficiency is improved.