96 results about "Ground water flow" patented technology

A lateral pipe lining material comprises a tubular resin-absorbing material impregnated with a curable resin and a brim attached at one end thereof. The lining material is positioned so that the brim faces a peripheral edge of a lateral pipe opening of the main pipe. A ring-shaped gasket composed of an elastic material is attached to an upper surface of the brim, and a bonding resin is applied thereto. The gasket seals a gap between an inner peripheral surface of the main pipe and the brim. The lateral pipe lining material is evertedly inserted into the lateral pipe in a state in which the bonding resin applied to the brim is brought into contact with the inner peripheral surface of the main pipe. In such a configuration, ground water can be prevented from seeping into the bonding resin applied to the brim even if the ground water flows into the main pipe from a break of the lateral pipe.

The invention belongs to the technical field of polluted ground water remediation, and particularly relates to a method and a system by using micro-namo bubbles to perform reinforcement in-situ remediation on polluted ground water. The method comprises the steps of: arranging a water injection well at the upper reaches of a region with ground water polluted by pollutants, and feeding micro-nano bubble water containing nutrient salts; leading the micro-nano bubble water to flow to the polluted region with the ground water, so as to decompose the pollutants or continuously compensate electron acceptors or electron donors for microorganisms and facilitate degradation and removal of organic pollutants; at the same time, arranging a water pumping well to pump water at lower reaches of the polluted region, so as to form a subsurface flow field; and using a monitoring well to monitor and analyze parameters in real time during the process of removing the organic pollutants, and adjusting the generating time and the aeration intensity of the micro-nano bubbles. According to the invention, the micro-nano bubbles are good in oxygen supply effect, long in lasting time and wide in influencing range, the method and the system provided by the invention can make up the shortages of common in-situ remediation technologies such as natural degradation, bioventing and the like and are low in cost and high in energy-saving efficiency, thereby being applicable in remediation for a field with a limit area and a high pollution load.

The invention provides three-dimensional artificial rainfall reservoir type landslide physical model testing equipment. The equipment comprises a box body, wherein the periphery and the bottom of the box body are sealed, the top of the box body is provided with an artificial rainfall system; a landslide bed is arranged in the box body; a landslide body is arranged on the landslide bed; the top end of the landslide bed is provided with a rear edge water complementing system for simulating ground water flow; a physical quantity test and control system is arranged in the landslide body; a TDR water testing system is arranged on one surface of the landslide body; a reservoir water level control system for controlling the water level in right front of the landslide body is arranged outside the box body; an exit gate is also arranged on the box body in right front of the landslide body. The testing platform system has the high integration and automation degrees, can be used for deformation damage model tests of a landslide under the action of a plurality of factors, and can perform the three-dimensional landslide physical simulation test research on landslide stability characteristic with the consideration of rainfall, reservoir water level rising and falling and coupling functions.

The invention discloses an urban hydrological simulation system and a simulation method, which relate to the technical field of urban precipitation management. The invention includes a rainfall floodmanagement model, the simulation system includes a time-varying precipitation unit, a surface water evaporation unit, a snow cover and melt unit, a depression interception unit, a soil seepage unit, agroundwater recharge unit, a groundwater and drainage pipe exchange unit, a slope catchment unit, a LID control unit, a region editing unit that are associated with the rainfall flood management model, and the simulation system further comprise a storage module, an aquifer editing module and a groundwater flow editing module. The invention has comprehensive simulation function and can provide comprehensive and representative analysis data through a complete functional system unit structure. The influence of DCIA and TIA setting on runoff generation in urbanization region is analyzed under thepremise of comprehensive consideration of parameters. More objective and accurate reference and opinions are provided for urban planning.

The invention discloses a concentrated combustion type in-situ thermal desorption repairing device for a contaminated site. The concentrated combustion type in-situ thermal desorption repairing devicecomprises a combustion heat transferring and waste heat recovery unit, an extraction condensation and gas-liquid separation unit, an underground water flow control unit, a soil gas control unit, a waste gas treatment unit and a waste water treatment unit. The combustion heat transferring and waste heat recovery unit comprises an air heating furnace, a gas-gas heat exchanger, an air blower, an induced draft fan, an exhaust funnel and a heating well group. The extraction condensation and gas-liquid separation unit comprises an extraction well group, heat exchanging and condensation equipment, gas-liquid separation equipment, a demist tower and a vacuum pump. The underground water flow control unit is a waterproof curtain, the soil gas control unit is a concrete layer, the waste gas treatment unit comprises adsorption equipment and a draught fan, and the waste water treatment unit comprises an adjusting pool, a combination pool, sand filtering equipment, carbon filtering equipment and awater outlet pool. According to the concentrated combustion type in-situ thermal desorption repairing device for the contaminated site, defects of the prior art can be overcome, and a better repairingeffect is achieved.

A lateral pipe lining material comprises a tubular resin-absorbing material impregnated with a curable resin and a brim attached at one end thereof. The lining material is positioned so that the brim faces a peripheral edge of a lateral pipe opening of the main pipe. A ring-shaped gasket composed of an elastic material is attached to an upper surface of the brim, and a bonding resin is applied thereto. The gasket seals a gap between an inner peripheral surface of the main pipe and the brim. The lateral pipe lining material is evertedly inserted into the lateral pipe in a state in which the bonding resin applied to the brim is brought into contact with the inner peripheral surface of the main pipe. In such a configuration, ground water can be prevented from seeping into the bonding resin applied to the brim even if the ground water flows into the main pipe from a break of the lateral pipe.

The invention discloses a vertical well pipe assisting in efficiently extracting groundwater in a low permeable aqueous medium in a laboratory and a usage method of the vertical well pipe. With an ordinary well pipe improved, a rubber plug with two holes are added on a nozzle, and one hole serves as an air inlet and outlet port while the other hole serves as an insertion hole for an pumping hose. The inner portion of a porous pipe part positioned on the lower portion of the well pipe is of the structure of double layers, and washing cotton is used for filling the inner portion of a cylindrical ring while macroporous membrane is used for being stuck on an inner ring. The outer portion of the porous pipe is distributed with pores unevenly and asymmetrically. When the well pipe is vertically arranged, owing to symmetric distribution, water flow is fast due to the effect of groundwater flow; owing to the asymmetric distribution, cumulative amount in pumping can be increased, flow rate can be reduced, area of the water contact surface is expanded, pressure is increased, and therefore the siphon effect of the hose is improved.

The invention discloses a polluted soil and underground water in-situ reaction zone repairing system which comprises a direct-current power supply, an even number of electrode wells, an even number of electrodes and an extraction and treatment system, wherein the electrode wells are arranged in the downstream direction of the underground water flow direction of a pollution source; the bottoms of the electrode wells are positioned on a soil aquifer; electrolyte is formed through permeation of underground water into the electrode wells in the electrode wells; the number of the electrodes is equal to that of the electrode wells; an electrode is inserted in each electrode well; the electrodes are inserted in the bottoms of the electrode wells; the height of each electrode is equal to or greater than the height of the liquid surface of the electrolyte in the corresponding electrode well; half of the electrodes are connected with the anode of the direct-current power supply, and the other half of the electrodes are connected with the cathode of the direct-current power supply; and a pipeline provided with a filter is adopted to extract the electrolyte of each electrode well. The polluted soil and underground water in-situ reaction zone repairing system facilitates interception and concentration of pollutants in underground water and facilitates diffusion and migration of nutrient substances.

The invention relates to a migration transfer characteristic test system of fragments of a reactor containment and a test method thereof. The system comprises a test segment module composed of a waterchannel, a rectifying grid, a filter screen and related equipment, a flow rate adjusting module composed of a water tank, a main water pump, an electric valve and related pipelines and instruments, acooling module composed of a cooling water pump, a heat exchanger, a cooling tower and related pipelines and instruments, a thermotechnical hydraulic parameter measuring module composed of a flowmeter, a temperature sensor, a pressure sensor and a liquidometer, an image collecting module composed of a high-speed camera, a local area network computer and related image processing software, a flow field information collection module composed of PIV equipment, a local area network computer and related flow field processing software and a remote control module composed of a programmable logic controller, a water pump, an electric valve and related equipment. The system simulates a ground water flow velocity field of the containment accurately after loss of coolant accident and acquires characteristic parameters of different fragments migrating in water.

A method for reinforcing base with bored pile in the underground structure of high groundwater level, the steps of which is as following: 1) removing the concrete on the surface of pile at the structural flask board, 2) drilling grouting borehole along the external circumstance of the aforementioned concrete and inserting the grout pipe into to the strata under the structural flask board, 3) water-stop grouting the strata under the structural flask board to the place of structural flask board, 4) drilling holes, 5) removing the concrete blocks at the hole site, 6) installing water-stop steel sleeve barrel, 7) installing permanent steel casing, and carrying out pile construction. This construction method efficaciously prevents the ground water flowing when the drilling pile passing the underground structural flask board, and accounts for the technical problem that the construction can not be carried out with emission of the ground water flood when the drilling pile penetrating through the underground structure flask board reinforcement base at the high groundwater level place.

The invention disclosed relates to a method and apparatus for the denitrification of groundwater in situ in an aquifer under substantially anaerobic conditions, the method comprising (a) providing a network, including an extraction well for removal of groundwater from the aquifer and a plurality of injection wells for returning groundwater to the aquifer, the injection wells being arranged in a line substantially perpendicular to the direction of groundwater flow, the extraction well being located downstream or upstream of the line of injection wells, and the spacing of the wells and the number of injection wells being determined by the mathematical relationship <math-cwu id="MATH-US-00001"> <number>1< / number> J = C p + nC 1 W → min ( 1 ) <mathematica-file id="MATHEMATICA-00001" file="US20020020664A1-20020221-M00001.NB" / > <image id="EMI-M00001" wi="216.027" he="18.00225" file="US20020020664A1-20020221-M00001.TIF" imf="TIFF" ti="MF" / > < / math-cwu> where J is the cost of treatment, Cp and C1 are the costs of extraction and injection wells, respectively; n is the number of injection wells, and W is the distance across the protected area, and wherein the water stream is evenly distributed between injection wells, according to the relationship: <paragraph lvl="0"><in-line-formula>Fl=Fe / n=const (2) < / in-line-formula>where F is the water flow rate (e-extraction well, i-injection well) and n is the number of injection wells, (b) removing groundwater from the aquifer by the extraction well, (c) adding a carbon source to the groundwater in a controlled manner, (d) returning the carbon source amended groundwater to the aquifer by the injection wells in even distribution, the water flow rate being controlled, and (e) monitoring the nitrate concentration of the groundwater removed from the extraction well, a decrease in nitrate concentration being indicative of denitrification.

The invention discloses a water drainage and gas recovery device for coal seam gas and a use method of the water drainage and gas recovery device and belongs to the technical field of coal seam gas exploitation. The water drainage and gas recovery device for the coal seam gas is additionally provided with a mechanical control switch, a switch on-off tool, a hollow polished rod packer and the likeon the basis of the prior art, the water drainage and gas recovery device for the coal seam gas can control on-off of the mechanical control switch on an oil pipe through lifting or lowering of a hollow polished rod. When the hollow polished rod is lifted, the switch on-off tool on the hollow polished rod can drive the mechanical control switch on the oil pipe to be turned on, thus a first annularspace can communicate with a second annular space, and through stratum energy of the coal seam gas, accumulated liquid in the second annular space enters the first annular space through the mechanical control switch, enters a hollow rod and the hollow polished rod through liquid passing holes in the hollow rod and is finally discharged into the ground water flowing course. According to the waterdrainage and gas recovery device for the coal seam gas and the use method of the water drainage and gas recovery device, the stratum energy can be sufficiently utilized to conduct water-carrying gas production, so that the exploitation cost is saved.

The invention discloses a method and a device using a home-made small tube well to lower an underground water level. According to the method using the home-made small tube well to lower the underground water level, a water stop ring is formed at the periphery of a foundation ditch through arranging a group of home-made small tube wells at the bottom of the foundation ditch and pumping water in the home-made small tube wells to a drainage ditch in the top of the foundation ditch through a water pump; the underground water near the home-made small tube wells would not permeate into the foundation ditch in short time so that the foundation ditch construction requirements are satisfied. The method and device using the home-made small tube well to lower the underground water level are especially suitable for an engineering featured with small precipitation depth, rich underground water resource, large foundation soil permeation coefficient and large underground water flow rate; the home-made small tube well precipitation system is capable of lowering the underground water level near the well point in short time, when a plurality of tube well precipitation points are used together, the water stop ring is formed at the periphery of the foundation ditch, and the underground water level in the foundation ditch is lowered to the position which meets the construction requirements. The device using the home-made small tube well to lower the underground water level is broad in material source, easy and convenient to process, small in well completion range and obvious in precipitation effect.

The invention discloses an underground water pollution source space comprehensive recognition method applying numerical simulation. The method comprises the steps of 1, boundary generalization; 2, performing interpolation to obtain an initial water head and a bottom plate elevation; 3, determining a source sink item; 4, carrying out permeability coefficient partitioning on the aquifer; 5, establishing an underground water flow model; 6, carrying out model calibration; 7, inverting an underground water flow trace; and 8, recognizing the exact pollution source of the underground water in space. Through application of simulation software, flowing of groundwater flow related to groundwater pollution sources can be represented in a more representative mode, and targeted regionalization research on groundwater pollution sources is facilitated; according to the invention, by tracking the underground water flow trace, the flow trace of underground water with underground water pollution is reversely studied, and the traceability work can be accurately and visually carried out; spatial accurate analysis is carried out through the division of underground running water traces and scenes such as pollution source types, land types and geological conditions on the ground.

The invention discloses a goaf hysteresis water inrush early warning system based on a natural potential method and an application method thereof, belonging to the field of coal mine safety technology and engineering. It includes a data acquisition device, a data processing device, an early warning device and a natural potential monitoring device. The natural potential monitoring device includes a reference electrode and at least one measuring electrode. Each measuring electrode is correspondingly connected to a data acquisition card. The data acquisition card is used to measure The potential signal collected by the electrodes is temporarily stored, and a protection device is installed above each data acquisition card; the natural potential in the goaf is monitored in real time through the natural potential monitoring device. The invention can realize the real-time monitoring of the natural potential of the goaf, through data collection and processing, can monitor the groundwater flowing potential signal of the goaf in real time, can effectively warn the delayed water inrush in the goaf, and effectively reduce or prevent the goaf Potential safety hazard of delayed water inrush.

The invention discloses a dynamic prediction method for the water inflow of a coal mine working face under the mining disturbance condition. The dynamic prediction method comprises the following stepsof (1) establishing a mine lot underground water flow numerical model in a natural state; (2) determining the rule of influence of different stages of coal mining to the working face on hydrogeological parameters of an aquifer based on the dynamic development characteristics of the water flowing fractures induced by coal mining disturbance; (3) preparing model input files of different mining stages; and (4) compiling a circulating script program, calling the model input files of the different mining stages, and running the program to calculate the water inflow. According to the dynamic prediction method, hydrogeological parameter setting in the underground water model is dynamically adjusted according to the development characteristics of the water flowing fractures under mining disturbance during simulation calculation by compiling the circulating script program, and the dynamic prediction of the water inflow is realized on the basis of reasonable generalization of the dynamic coal mining process and the disturbance effect.

The invention proposes a cavern underground water trend tracer meter and a method based on GNSS and mobile communication. Tracer meter position information is obtained by using a GNSS module, a processor converts the tracer meter position information and stores useful data, and finally the data is transmitted to a remote server by using a mobile communication module, to implement remote real-timemonitoring of a tracer meter track, so that measurement of a cavern underground water trend is implemented. A light-control power source module is composed of a power source and a light-control switchmodule. When there is light, the power source supplies power to the tracer meter, and stops supplying power to the tracer meter during darkness, so that an endurance time of the tracer meter is improved. A spherical shell is used for the tracer meter to improve a passing capacity of the tracer meter in a groundwater flow, and wireless charging is used for improving water resistance of the tracermeter. The tracer meter is small in volume, low in costs, long in endurance time and easy to operate, and has a very broad application prospect.

The invention discloses a normal-pressure chemical oxidation injection device for underground water. The normal-pressure chemical oxidation injection device comprises a dispensing tank, a chemical conveying pipe, a chemical injection pump and an injection well, wherein the injection well is arranged in a polluted area, an input port of the chemical injection pump is communicated with the dispensing tank, and an output port of the chemical injection pump is connected to the injection well through the chemical conveying pipe; a flowmeter, a pressure gauge and a valve are arranged on the chemicalconveying pipe; the injection pressure of the chemical injection pump is 0.1-0.2 MPa; the distance between the injection wells is determined according to the underground water flow velocity of the polluted area. According to the technical scheme, the chemical is diffused to cover the polluted area under natural conditions, so that the effect of removing pollutants is achieved, the reaction efficiency is improved, and the undesirable phenomena of uneven chemical diffusion, ground slurry return and the like caused by over-high injection pressure are avoided.

The invention discloses a waterproof construction method in underground engineering. The waterproof construction method is characterized by comprising the following steps: a, performing tunnel excavation, primary support and waterproof base plane treatment after primary support; b, manufacturing a film spraying material; c, spraying the waterproof base plane by adopting a spray film-forming technology; d, performing reinforcing bar engineering construction; e, performing WEYTHIN cellulose fiber concrete stirring; f, performing WEYTHIN cellulose fiber concrete pouring; and g, forming inverted arch, and finishing waterproof construction during underground engineering. Change of ground water flow rule during underground engineering construction and treatment problem of later tunnel water leakage are avoided. The method is applicable to tunnel water prevention of different lining types and open cut pit water prevention, can reduce the damage of the ground water rule to the greatest degree and is particularly used in regions such as surface water body, wellsprings, geological sensitive areas and the like nearby new projects, extension projects and reconstruction projects. Meanwhile, the cost waste and quality problem caused by subsequent water leakage treatment are reduced.

The invention discloses a wild underground water connectivity test device and method. The wild underground water connectivity test device comprises a gasifying-boosting mechanism, a valve, a pressuresensor, a flow sensor, a communicator, a controller, a packer and a bubbler, wherein the valve, the pressure sensor and the flow sensor are arranged on the upper side of an injection well lid; the packer and the bubbler are arranged on the lower side of the injection well lid; the gasifying-boosting mechanism communicates to the valve; the controller is connected with the valve; the pressure sensor and the flow sensor are connected with the controller through the communicator; and gas generated by the gasifying-boosting mechanism can enter an injection well through the valve, the packer and the bubbler. Through the adoption of the wild underground water connectivity test device and method, an external chemical tracer can be prevented from entering the underground water, and meanwhile the connectivity of hydrogeological parameters such as the flow speed, flow direction and the like of the underground water can be indicated.

The invention discloses a grouting device, equipment and method for a sounding pipe in a water-rich stratum of a cast-in-place pile. The grouting device includes at least one layer of grouting holes and at least one grouting pipe connected coaxially; any layer of grouting holes include a plurality of grouting holes which are formed by penetrating through the pipe wall of the sounding pipe in the circumferential direction of the sounding pipe, and the grouting holes of each layer are arranged at intervals in the axial direction of the sounding pipe; the outer diameter of the grouting pipes is smaller than the inner diameter of the sounding pipe, communication assemblies are arranged at the positions, corresponding to the positions of each layer of grouting holes, on the grouting pipes, andany communication assembly includes a main pipe coaxially connected with the grouting pipes and a plurality of branch pipes which radially communicate with the main pipe; and when the grouting pipes are lowered into position in the sounding pipe, each of the branch pipes correspondingly communicates with the grouting holes of the corresponding layer respectively, and the bottom end of the main pipe of the bottommost communication assembly seals the grouting pipes. The grouting device can be arranged in the sounding pipe by verifying the location of groundwater flow scouring, grouting liquid issprayed to form a protective layer, a water flowing channel is sealed, and the problem that the water-rich stratum is harmful to a cast-in-situ bored pile can be solved.

The invention relates to a method for analyzing the effect of an underground water pressure mining scheme based on a GMS, and belongs to the technical field of numerical simulation. According to the method, the hydrogeological conditions, the generalized boundary conditions and the aquifer of a research area are combined, all source and sink items and hydrogeological parameters are determined, the GMS-based groundwater flow model is established, and the model is identified and verified. The pressure mining quantity corresponding to the underground water pressure mining scheme serves as a source sink item to be input into the model, different simulation time and operation models are set, the result is analyzed, and the effect of the underground water pressure mining scheme can be obtained. According to the method, the direct underground water flow field graph under the influence of the underground water pressure mining scheme under different time scales and the underground water resource quantity change value of the research area can be obtained, so that the direct understanding of the effect of the underground water pressure mining scheme is realized.

The invention discloses a dynamic simulation method for recharging underground water by surface water. The method comprises the following steps: equipment assembly: connecting a surface water input unit, an underground water input unit, a discharge unit, a circulation monitoring unit, a river simulation unit, an aeration zone simulation unit and an aquifer simulation unit; underground water flow field simulation: controlling communication between the underground water input unit and the aquifer simulation unit and communication between the discharge unit and the aquifer simulation unit to obtain a stable underground flow field; infiltration simulation: controlling communication between the surface water input unit and the river simulation unit and communication between the discharge unit and the river simulation unit, and obtaining the infiltration amount and the effective recharging amount of the aeration zone; and infiltration monitoring, wherein the circulation monitoring unit monitors the water content or the liquid level height in the aeration zone simulation unit and the water-containing layer simulation unit. Dynamic and three-dimensional monitoring of influence of infiltration water under different runoff conditions of rivers on the groundwater volume is realized.

The invention is applicable to the technical field of clean energy equipment, and provides a method for slowing down the heat interference of an underground water source heat pump. The method for slowing down the heat interference of the underground water source heat pump comprises a heat pump unit communicating with a first hoistway through a first pipeline and communicating with a second hoistway through a second pipeline, and a heat barrier well arranged between the first hoistway and the second hoistway and communicating with the first pipeline or the second pipeline, wherein the heat pumpunit, the first hoistway and the second hoistway communicate with liquid driving equipment; the first hoistway, the second hoistway and the heat barrier well are arranged in an aquifer; the heat pumpunit, the first hoistway, the second hoistway, the heat barrier well and the aquifer form water flow circulation; and the heat barrier well and the heat pump unit divide the water pumping flow, and change the pumped and irrigated groundwater flow field to delay the occurrence of the heat interference. The method for slowing down the heat interference of the underground water source heat pump provided by the invention has the advantages of low investment cost, low interference resistance, convenience in adjustment, high energy utilization rate and convenience in small-field popularization andimplementation.

The invention provides three-dimensional artificial rainfall reservoir type landslide physical model testing equipment. The equipment comprises a box body, wherein the periphery and the bottom of the box body are sealed, the top of the box body is provided with an artificial rainfall system; a landslide bed is arranged in the box body; a landslide body is arranged on the landslide bed; the top end of the landslide bed is provided with a rear edge water complementing system for simulating ground water flow; a physical quantity test and control system is arranged in the landslide body; a TDR water testing system is arranged on one surface of the landslide body; a reservoir water level control system for controlling the water level in right front of the landslide body is arranged outside the box body; an exit gate is also arranged on the box body in right front of the landslide body. The testing platform system has the high integration and automation degrees, can be used for deformation damage model tests of a landslide under the action of a plurality of factors, and can perform the three-dimensional landslide physical simulation test research on landslide stability characteristic with the consideration of rainfall, reservoir water level rising and falling and coupling functions.

The invention provides a construction method of an air curtain wall. The construction method specifically comprises the following steps that 1, a plurality of air injection hole units are arranged onthe periphery of the side of a mine pit; 2, an air injection sleeve and an air injection pipe are connected in a welded mode, a pipe opening of the air injection sleeve is sealed, and a connector connected with an air conveying pipe is arranged on the air injection sleeve; 3, the air injection hole units are subjected to hole washing with clear water, and well wall mud is washed away; and 4, the air injection pipe is connected with the air conveying pipe, the air conveying pipe is connected with an air compressor, and the rest can be done in the same manner, so that the plurality of air injection hole units in rows are connected according to the steps to form the air curtain wall. The air curtain wall is used for preventing and treating mine pit underground water, the underground water level around the mine pit cannot be decreased, the underground water level around the mine pit can be increased instead, and the surrounding ecological environment can be protected; and meanwhile, a large amount of underground water can be prevented from flowing into the mine pit, the effect of preventing and treating the mine pit underground water is achieved, the cost is low, construction is easy,and the construction method can be popularized within a large range.

The invention discloses a concentrated combustion type in-situ thermal desorption repairing method for a contaminated site. A concentrated combustion type in-situ thermal desorption repairing device is arranged and used for conducting repairing. The concentrated combustion type in-situ thermal desorption repairing device comprises a combustion heat transferring and waste heat recovery unit, an extraction condensation and gas-liquid separation unit, an underground water flow control unit, a soil gas control unit, a waste gas treatment unit and a waste water treatment unit. The combustion heat transferring and waste heat recovery unit comprises an air heating furnace, a gas-gas heat exchanger, an air blower, an induced draft fan, an exhaust funnel and a heating well group. The extraction condensation and gas-liquid separation unit comprises an extraction well group, heat exchanging and condensation equipment, gas-liquid separation equipment, a demist tower and a vacuum pump. The waste gas treatment unit comprises adsorption equipment and a draught fan, and the waste water treatment unit comprises an adjusting pool, a combination pool, sand filtering equipment, carbon filtering equipment and a water outlet pool. According to the concentrated combustion type in-situ thermal desorption repairing method for the contaminated site, defects of the prior art can be overcome, and a betterrepairing effect is achieved.

The invention discloses a pollution identification and analysis method for an underground water environment, and belongs to the technical field of underground water pollution tracing. The method comprises the following steps: 1, comparing a monitoring well for discovering pollutants in the work with devices in a site, and finding out a device with the same characteristics as the discovered pollutants; 2, distinguishing the device found in the step 1 according to the upstream and the downstream of the underground water flow field of the site where the pollutant monitoring well is located; 3, calculating a time period T when the pollutants reach the monitoring well for discovering the pollutants after the upstream of the monitoring well for discovering the pollutants leaks from the device with the same characteristics as the discovered pollutants; 4, inquiring whether related operations exist in the upstream of the monitoring well with the discovered pollutants and the device with the same characteristics as the discovered pollutants before the time period T: if not, excluding the device as a seepage device; otherwise, the device is regarded as a suspected leakage device.

The invention discloses an embedded rotating type ground cleaning device. The device comprises a main body shell, a high-pressure water flow can be discharged outwards on the premise of rotating, 360-degree rotating type non-dead-corner high-pressure water flow impact can be formed, the coverage range is wide, after water flow impact, high-pressure air formed through subsequent pressure can carryout impact, the ground water flow is cleaned, dual-mode cleaning is achieved, the use rate of kinetic energy is high, the device is provided with a gear engaging structure radius gradual changing typerotating strength effective reinforcing mechanism, the rotating strength can be effectively enhanced, more intensely pressure can be provided, in addition, the device is provided with an annular array arrangement spiral spring collision type maximum rotating strength control mechanism, maximum resistance during rotating is controlled, the phenomenon that due to too high inner air pressure, a drive motor is damaged can be avoided, in addition, the device is provided with a spherical-structure type air one-way flowing control mechanism, and large gas one-way flowing can be borne.