38 results about "Well drainage" patented technology

The utility model relates to an airport ground well drainage system, which is characterized in that a water collecting pit is arranged at the bottom of a well pit of a ground well, and the drainage system comprises a drainage pump, a first liquid level sensor, a second liquid level sensor, a drainage hose, a one-way check valve, a drainage embedded part and a ground well PLC (Programmable Logic Controller) control box, the drainage pump, the first liquid level sensor and the second liquid level sensor are all electrically connected with the ground well PLC control box, the drainage pump is arranged in a sump and connected with the one-way check valve through a drainage hose, the one-way check valve is connected with the drainage embedded part through the drainage hose, and therefore a drainage main loop of a ground well is formed. And water in the ground well is discharged into a ground airport apron or a drainage pipe network through the main loop. The two liquid level sensors are adopted, liquid level monitoring and water level offside monitoring can be achieved, meanwhile, fault alarm of the drainage pump can be achieved, and the normal working state of the drainage pump is guaranteed.

The invention relates to the technical field of coal mining, in particular to a method for treating a room-and-pillar goaf through grouting and recycling coal pillars through fully mechanized mining, which comprises the following steps: forming a detection directional hole through a directional drilling technology, performing field detection on a distribution area of the room-and-pillar goaf, constructing a three-dimensional space model of the room-and-pillar goaf, and constructing a three-dimensional space model of the room-and-pillar goaf; gradually obtaining the range of the room-and-pillar goaf according to the boundary points of the room-and-pillar goaf detected by the plurality of detection directional holes; based on the range of the room-and-pillar goaf and the internal structure of the room-and-pillar goaf, the arrangement position, number and depth of drainage drill holes are obtained; based on the arrangement position, number and depth of the drainage drill holes, accumulated water in the goaf is introduced into a mine drainage system through a drainage pipe; grouting treatment is conducted on the room-pillar type goaf through the grouting drill holes; and after the working face is arranged according to the working face arrangement scheme, coal pillar recovery operation is carried out according to the formulated mining scheme.

The present application relates to the technical field of oilfield development, and particularly relates to a gas well drainage spiral degassing composite sand prevention device, which comprises a sand prevention oil well pump, a lower oil pipe section connected to the lower end of the sand prevention oil well pump, a special-shaped variable buckle connected to the lower end of the lower oil pipe section, outer and inner connecting parts provided at the upper and lower ends of the special-shaped variable buckle, an outer connecting part at the lower end of the special-shaped variable buckle connected to a sand settling tail pipe assembly, the sand settling tail pipe assembly comprising at least one sand settling pipe and a bottom plug connected to the bottom end, and a central pipe assembly coaxially arranged in the sand settling pipe. The uppermost sand settling pipe is connected to a wire-wound screen pipe with a gap of 0.2 mm, thereby performing the first filtration on the formation water, and the special-shaped variable buckle is connected to a laser slotted sand control screen pipe with a gap of 0.15 mm, thereby performing the second filtration on the formation water, effectively preventing the sand particles with different particle sizes from entering the sand prevention oil well pump, and avoiding the sand sticking of the pump cylinder and the failure of the valve.

A controllable shock wave-based coalbed methane horizontal well stimulation method, comprising: S1: selecting a group of upward directional drilling construction sites in a downhole roadway of a horizontal well service mine, directional drilling target positions being respectively coalbeds (3) directly facing horizontal well perforations (2) at multiple positions from a horizontal well; S2: performing construction drilling on a target at A meters, and determining whether the drilling target enters a fracturing influence range and whether the drilling target is within a horizontal well drainage influence range; if the drilling target is within the fracturing influence range, performing controllable shock wave construction; and if the drilling target is not within the fracturing influence range, re-constructing other target positions until a target position within the fracturing influence range is found, and then stopping; and S3, executing S2, including construction drilling and determination, for each horizontal well perforation until target positions within the fracturing influence range corresponding to all the horizontal well perforations are found, and performing controllable shock wave construction. By means of the method, the production of a coalbed methane well is increased, a seepage channel is further expanded, and the production life of the coalbed methane well is prolonged.

The utility model relates to the technical field of urban road drainage, in particular to a composite catch basin drainage system based on permeable asphalt concrete. The drainage system comprises an asphalt concrete surface layer (8), a base layer (9) is arranged below the asphalt concrete surface layer (8), a subbase layer (10) is arranged below the base layer (9), and rainwater branch pipes (6) are arranged below the subbase layer (10); a prefabricated concrete catch basin main body (2) is arranged on the road, and a plurality of groups of circular drainage holes (3) are formed in the prefabricated concrete catch basin main body (2); a permeable asphalt concrete layer (1) is arranged above the precast concrete catch basin main body (2); a water collecting cavity (4) is arranged below the prefabricated concrete catch basin main body (2); the water collecting cavity (4) is connected with a rainwater branch pipe (6); and a C15 concrete cushion layer (5) is arranged below the water collecting cavity (4).

This invention relates to the field of foundation pit dewatering technology, and in particular to a drainage structure and construction method for deep foundation pit sump wells. The drainage structure includes a deep well, a sump, and a sand-free ash pipe. The sump is located at the top of the deep well. The bottom end of the sand-free ash pipe extends to the bottom of the deep well, and the top end extends into the sump and protrudes from the bottom inner wall of the sump. An outer pipe is fixedly fitted around the sand-free ash pipe, located below the sump and above half the length of the sand-free ash pipe. Multiple sedimentation chambers of progressively decreasing height are provided between the outer pipe and the sand-free ash pipe. The drainage structure proposed in this invention can promptly discharge water from the deep well, thus preventing the deep well from becoming full and causing water accumulation in the deep foundation pit that is difficult to infiltrate. Furthermore, the discharged water contains less sediment, reducing the filtration and purification pressure on the municipal pipe network, thereby indirectly reducing the energy consumed in municipal water supply and drainage processes, achieving energy conservation and emission reduction.

The invention provides a shale gas well after-pressure drainage system establishment method and device and a medium, and relates to the technical field of shale gas well drainage and mining, and the shale gas well after-pressure drainage system establishment method comprises the steps that on the basis of target parameters of a simulated shale gas well, a typical well group is selected; and based on the drainage parameters of the typical well group, a drainage system after pressure drainage is established, and the drainage system after pressure drainage comprises a soaking time determination system and an oil nozzle replacement system. According to the method, sand control, pressure control and the optimal test flow-back rate are taken as targets, and a liquid drainage system, including a soaking time system and an oil nozzle replacement system, suitable for the block after pressure is established, so that the accuracy of soaking time and oil nozzle replacement is improved, the problems of fuzzy consideration and poor applicability in an existing system are solved, the flow-back rate of a proppant can be effectively reduced, and the production efficiency is improved. A good flowback effect can be achieved, and the flow conductivity of the crack is guaranteed. And meanwhile, liquid drainage and sand production can be effectively avoided, and the productivity is improved to the maximum extent.

The utility model discloses a large -scale sinking well drainage sinking centralized control system, and sinking well foundation structure includes well wall, multiple first partition wall and multiple second partition wall of being located in well wall, to separate the space surrounded by well wall into multiple well holes, first partition wall sets up along first direction, and second partition wall sets up along second direction, and first direction and second direction form certain angle, control system includes multiple row of slag main pipe, and row of slag main pipe is located in first partition wall and / or second partition wall, and one end extends to sand trap, multiple water supply main pipe, and water supply main pipe is located in first partition wall and / or second partition wall, and one end is connected water supply device, wherein, at least one in adjacent two peripheral well holes is equipped with sand pumping device, and the internal well hole is equipped with sand pumping device, and sand pumping device includes water supply small pipe and row of slag small pipe, and multiple water supply small pipes are connected with one water supply main pipe correspondingly, and multiple row of slag small pipes are connected with one row of slag main pipe correspondingly, and have communication state and barrier state respectively.

The invention discloses a red-mine drainage pipeline connector convenient to dredge for a mine and a dredging method, and relates to the technical field of underground drainage of coal mines, the red-mine drainage pipeline connector comprises a water inlet pipe and a water outlet pipe, and at least two water outlets are formed in the pipe wall of the water inlet pipe; the water outlet pipe is fixedly sleeved outside the water inlet pipe, so that an annular overflowing space is formed between the outer wall of the water inlet pipe and the inner wall of the water outlet pipe, and a connecting pipe communicated with the annular overflowing space is arranged on the side wall of the water outlet pipe. The problems that in the prior art, due to the fact that a traditional mine drainage pipeline connecting structure is single in function and lacks efficient self-cleaning capacity, blockage is prone to occurring when slag-containing water is treated, manual shutdown and disassembly are dependent in the desilting process, and efficiency is low are solved. The device has the advantages that the device is provided with a mechanical scraping and high-pressure hydraulic flushing dual self-cleaning mechanism, efficient and automatic desilting of the filtering unit is achieved, the maintenance efficiency is improved, continuous and stable operation of a drainage system is guaranteed, and the device is suitable for the coal mining environment.

The invention discloses a red-mine intelligent automatic drainage system for a mine and a working method, and relates to the technical field of mine drainage. The red-mine intelligent automatic drainage system comprises a pipeline and a filtering mechanism integrated on the pipeline; the pipeline is formed by connecting a plurality of sections of water pipes, and the filtering mechanism comprises a metal filter cartridge, a cleaning assembly and a pressure relief channel which are arranged in the water pipe; the cleaning assembly is connected with the filter cartridge and is driven by water flow pressure; an inlet of the pressure relief channel is communicated with the interior of the filter cartridge, and on-off is controlled by axial movement of the filter cartridge. The problems that in a traditional mine drainage system in the prior art, a filter screen is prone to being blocked due to solid particles in sewage, cleaning and maintenance are difficult, efficiency is low, and equipment is prone to being damaged are solved. The device has the advantages that automatic cleaning and intelligent pressure relief of the filter cartridge are achieved through hydraulic driving, blockage is effectively avoided, and the automation degree and operation reliability of a drainage system are improved.

According to the construction method for anti-floating treatment of the existing building basement, the safe and economical target control water level is determined through structural loads and specifications, and an accurate foundation is laid for system design; through comparison and checking of theoretical and actually measured data, it is ensured that the drainage capacity is sufficient to cope with extreme working conditions, and the anti-floating safety reserve is greatly improved; according to the method, the existing water collecting wells and water pumps are fully utilized and optimized, economical and reasonable transformation is achieved, a drainage system is finely designed according to drainage tasks and geological conditions of all the wells, and the drainage efficiency and the long-term silt prevention performance are guaranteed; water level automatic control and drainage linkage are achieved through the elevation of the return bend pipe, sensitive response and unattended operation are achieved, and the operation and maintenance cost is reduced. According to the method, a complete closed loop from water level determination, system design, automatic control to monitoring verification is formed, and the reliability, economical efficiency and long-term effectiveness of anti-floating treatment of the existing building basement are remarkably improved.

The embodiment of the invention provides a determination method and device for a shale gas well drainage and recovery process and a storage medium, and belongs to the technical field of shale gas well drainage and gas recovery. The determination method of the shale gas well discharge and recovery process comprises the steps that the daily gas production rate and wellhead pressure of a shale gas well are obtained; determining the critical liquid-carrying flow of the shale gas well by using a preset critical liquid-carrying flow model; when the daily gas production rate is smaller than or equal to the critical liquid-carrying flow rate, a first chart is determined in a preset chart library based on the wellhead pressure, and the preset chart library comprises a plurality of drainage and mining process screening charts of the preset wellhead pressure; and based on the first chart, determining the discharge and recovery process of the shale gas well. According to the method, the liquid carrying capacity of the shale gas well and the applicability and economical efficiency of different drainage and mining processes are comprehensively considered, selection of the on-site drainage and mining processes is guided more rapidly and scientifically through the drainage and mining process screening plate, and therefore the problem of well bottom liquid accumulation caused by reduction of the liquid carrying capacity is solved, and the development efficiency and economic benefits of the shale gas well are improved.

The utility model provides an anti-scaling device, which belongs to the technical field of anti-scaling blockage of mine drainage pumping wells, and comprises a wellhead inflation plugging device, a well drainage pipe, an exhaust pipe and an anti-scaling agent pipe, the wellhead inflation plugging device is of a cylindrical structure, the size of the bottom of the wellhead inflation plugging device is matched with the size of a wellhead, and the well drainage pipe is connected with the anti-scaling agent pipe. The size of the top of the anti-scaling agent is larger than that of the well mouth, and the size changing position is of an arc-shaped structure and used for blocking the well mouth so as to prevent external air from entering the well and prevent the anti-scaling agent from escaping. The well drainage pipe is fixed to the center of the wellhead inflation plugging device and used for discharging sewage outwards. The utility model provides an anti-scaling device which can solve the problems of unsmooth water flow, well wall damage, pump machine abrasion and the like caused by scaling and blockage in the using process of a pumping well, so that the using efficiency of a water pump is improved, the service life of the water pump is prolonged, and stable operation and water supply safety of the pumping well are guaranteed.

1. The name of the design product: grating cover plate. 2. The use of the design product: used for installing on facilities such as inspection wells, drainage ditches, etc. to play a role of drainage. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

This invention discloses a method, electronic equipment, and medium for deploying drainage wells in a gas reservoir. Belonging to the field of oil and gas extraction technology, the method includes determining the reservoir water intrusion pattern and channels, calculating the cumulative water intrusion volume, and calculating the daily water intrusion volume based on the cumulative water intrusion volume. Based on the daily water intrusion volume, the total drainage volume of the gas reservoir is determined, and the total drainage volume of existing wells is determined accordingly. The gap drainage volume is determined based on the total drainage volume of the gas reservoir and the total drainage volume of existing wells; the gap drainage volume is the drainage volume of new wells that need to be deployed to supplement the existing drainage volume; the well type, drainage volume, and number of new wells are determined according to the required drainage volume; and the well trajectory orientation, plane position, vertical position, and length of the new wells are set. This method enables new wells to work collaboratively with existing wells, effectively improving the utilization rate of gas reservoir reserves, reducing abandonment pressure, and ultimately significantly improving the gas reservoir recovery rate, allowing gas reservoir development to maintain a highly efficient and stable state for a longer period.

This utility model belongs to the field of oil pump technology and discloses a self-cleaning anti-jamming oil pump, including a pump barrel and a plunger. The plunger and pump barrel are clearance-fitted. A spiral groove is formed on the inner wall of the pump barrel. The spiral groove is located within the stroke range of the plunger's reciprocating motion, and the axial length of the plunger is greater than the axial length of the spiral groove. This allows the spiral groove to not only accommodate solid particles, but also, under the conditions of coalbed methane well drainage with high coal powder content, certain viscosity of well fluid, and severe scaling, the flow field and direction of the well fluid located in the spiral groove are changed when the plunger reciprocates through it. This causes the well fluid in the spiral groove to flow, thereby flushing and cleaning the solid particles adhering to the spiral groove, preventing the accumulation of solid particles in the spiral groove, thus reducing the probability of pump jamming, extending the service life of the oil pump, reducing the frequency of well workover and pump inspection operations, and minimizing the impact on production.

The invention relates to an intelligent drainage and gas production system for shale gas and a control method. The drainage and gas production system comprises a first flow meter, a gas lift control valve, a wellhead gas production tree and an automatic bubble discharging device which are sequentially connected through a pipeline. The wellhead intelligent pressure control device is arranged at the produced gas end of the wellhead gas production tree; the second flow meter is connected with the wellhead intelligent pressure control device through a pipeline; the pressure transmitter is arranged on a wellhead gas production tree; the far-end measurement and control unit device is respectively in communication connection with the pressure transmitter and the second flow meter; and the shale gas fine discharging and mining control module is in communication connection with the first flow meter, the gas lift control valve, the far-end measurement and control unit device, the wellhead intelligent pressure control device and the automatic bubble discharging device. Compared with the prior art, intelligent control over the shale gas well drainage gas recovery process is achieved, the defect that a traditional process depends on manual operation is effectively overcome, the automation level and the response speed of gas well production are improved, and errors and production cost caused by human factors are reduced.

The present application relates to coalbed methane exploration and development technical field, disclose a kind of coal mine area gas efficient extraction and stratum water and gas underground collaborative processing method, the method comprises: the damping response signal of extraction fluid is collected by tuning fork sensor arranged in extraction borehole, the total concentration of solid phase particle, particle size distribution and water saturation are identified, when total concentration exceeds safety concentration threshold, according to particle size distribution, solid phase particle class is divided, and water injection intervention mode is generated in combination with water saturation decision-making, in the process of water injection intervention, according to the difference of bottom hole flow pressure and reservoir critical closure pressure, water injection pressure and drainage parameters are linked to adjust, when total concentration is lower than the preset threshold, duration reaches the preset time window and change trend converges, stop intervention action.The present application realizes the real-time perception of extraction fluid, targeted water injection intervention and reservoir protection integrated collaborative control, effectively prolongs coalbed methane well drainage pump inspection pump cycle, reduces maintenance cost, improves coalbed methane production.

The utility model discloses a kind of silt deposition devices inside suction well of vortex well, it is related to vortex well structure technical field, and include: outer well, pedestal, suction well, inner well, drain pipe and water flow disturbance mechanism;Suction well is set on pedestal, and the top opening of suction well is higher than water inlet;One end of inner well is installed in suction well and passes through the bottom of suction well and is communicated with silt containing space, and the other end extends outer well, to make grab bucket fall along inner well to the bottom of outer well, and grab the iron oxide skin of outer well bottom;The bottom end of drain pipe extends into suction well and is located at the top of suction well, and the other end extends outer well to discharge turbid ring water after precipitation from outer well;The output end of water flow disturbance mechanism is set in suction well to make turbid ring water inside suction well in flowing state, and impurity in suction well is discharged together with water in the process of drain pipe drainage, structure is simple, convenient to use, effectively avoid suction well silt deposition.

The invention discloses a closed type gas well drainage pry and a using method, and belongs to the technical field of gas well drainage gas recovery. The closed type gas well drainage pry comprises an outer frame connected to a base, and a drainage pry body and a separation mechanism which are communicated are installed in the outer frame; the separation mechanism comprises an inner container and a centrifugal assembly. The centrifugal assembly can drive the inner container to rotate and generate centrifugal force, and the recyclable gas is separated from the mixed liquid in the inner container under the action of the centrifugal force, so that the separation of the recyclable gas and the mixed liquid is realized, and the recycling of the recyclable gas is facilitated; by adopting the drainage pry, bubbles in mixed accumulated liquid can be broken through centrifugal force generated by high-speed rotation of the drainage pry, so that natural gas is released, the separated natural gas is transferred and stored, and the problem of resource waste is avoided; the drainage pry is simple in structure and principle and convenient to implement, operate and maintain, recoverable gas in the mixed accumulated liquid can be efficiently separated out, the resource recovery efficiency is improved, and the drainage pry has good application and popularization value.

The invention discloses a substation cable trench twin-well cooperative drainage control method and system, and relates to the technical field of substation safety monitoring. Water level values of two adjacent water collecting wells and water flow in an auxiliary drainage pipe connecting the two adjacent water collecting wells are collected in real time; according to the water level values, the water level change rates in the two adjacent water collecting wells are calculated respectively; according to the water level value, the water accumulation state of two adjacent water-collecting wells is judged; when accumulated water exists and single well drainage is normal, the drainage priority of the two working wells is determined according to the water level change rate, and water pumps in the two adjacent water collecting wells are controlled to be started according to the drainage priority; when the ponding single well is abnormal in drainage and the auxiliary drainage pipe is unblocked, the drainage scheme is determined to be a collaborative drainage mode; when the auxiliary drainage pipe is blocked, the blocking degree is judged according to the change trend of the water flow and the water level change rate, and a treatment and drainage scheme is determined according to the blocking degree. And frequent start, stop and overload of the water pump are avoided through twin-well cooperation and by utilizing priority scheduling and flow matching.

The application discloses a construction process of a water conservancy tunnel large-gradient inclined shaft drainage system and the drainage system, relates to the inclined shaft drainage field, and discloses the drainage system which comprises a plurality of water collecting sumps arranged along the length direction of the inclined shaft, corresponding pump stations arranged in the water collecting sumps, pump water pipes arranged between adjacent water collecting sumps, a water inlet end of the pump water pipe connected with the pump station close to the bottom of the inclined shaft, and a water outlet end of the pump water pipe located in the water collecting sump close to the top of the inclined shaft. The water collecting sump close to the top of the inclined shaft is communicated with a sewage treatment system located outside the inclined shaft. The plurality of water collecting sumps are communicated with a water dispersing and collecting system in the inclined shaft. The application can avoid the water level difference between high and low underground water levels, the large-gradient deep inclined shaft construction in the broken surrounding rock geology, the construction efficiency reduction caused by the seepage water and other factors, and the poor construction quality and other adverse factors, and can greatly reduce the safety accidents such as the water-rich geology, the surrounding rock softening, the structure surface slip, the collapse and the electric shock.

The utility model belongs to mine drainage technical field provides a filter pipeline for mine water disaster prevention and treatment, include: U-shaped transition pipe, and set up in the inside central of support pipeline, and the both ends of U-shaped transition pipe are connected with water inlet pipe and outlet pipe through water inlet elbow and outlet elbow respectively, and the junction of water inlet elbow and water inlet pipe and the junction of outlet elbow and outlet pipe are oppositely arranged, and are overlapped on the top of support pipeline respectively, inner filter pipe, be located in the water inlet side pipe of U-shaped transition pipe, be provided with first filter hole on the inner filter pipe, and the water inlet end of inner filter pipe is fixed with the water inlet end of U-shaped transition pipe and the water outlet end of water inlet elbow, and the bottom of the middle pipe of U-shaped transition pipe is equipped with the impurity removal pipe that is linked with inner filter pipe, and the other end of impurity removal pipe is communicated with support pipeline. The utility model can effectively filter the impurities such as coal dregs in coal mine drainage pipeline, and can take out the filtered impurities from the pipeline, guarantees the drainage efficiency.

This invention relates to the field of wastewater treatment technology, specifically to a secondary sedimentation tank for wastewater treatment with an outlet intercepting screen for slag removal. The tank includes a tank body, an overflow trough and a drainage trough at the top, and a drainage well and a slag discharge well along the circumference of the drainage trough on the top surface of the tank body. An intercepting screen is installed inside the drainage well. A screen cleaning device is mounted at the center of the tank body via a rotating frame. Rotation of the rotating frame allows the cleaning device to move sequentially above the drainage well and the slag discharge well. At the drainage well, the cleaning device uses negative pressure to adsorb and remove slag from the surface of the intercepting screen; at the slag discharge well, the cleaning device uses positive pressure to blow off and discharge the collected slag. This invention achieves automatic and efficient cleaning of the intercepting screen, avoiding the drawbacks of manual cleaning and the problems caused by complex equipment.

The application discloses a kind of karst fissure water drainage methods of underground mine, it is related to underground mine construction technical field.In the water outlet of roadway surrounding rock, drill several water guide holes along section radial, the end of water guide hose of water guide hole is located in the drainage ditch of roadway side;The chamber of roadway side is used as water storage pool, and the water in drainage ditch is drained or flows to water storage pool and temporarily stored;Water injection hole is drilled downward in the roadway floor around water storage pool, and water injection hole penetrates aquiclude until target aquifer;High-pressure water injection parameters are set, and water pump in high-pressure water injection device pressurizes water in water storage pool to lower target aquifer, until target aquifer reaches saturation or nearby gushing water is finished, and water pump is stopped after drainage, and control valve is used to close water injection pipe.The way of shallow drainage and deep injection is used to pressurize and drain mine karst fissure water to deep aquifer, so that mine water discharge is not out of well, and mine drainage system is simplified, and a large amount of drainage cost is saved.

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment secondary sedimentation tank with a water outlet interception grating slag removal function, which comprises a tank body, an overflow groove and a drainage groove are arranged at the top of the tank body, a drainage well and a slag discharge well are arranged on the top surface of the tank body along the circumferential direction of the drainage groove, and an interception grating is arranged in the drainage well. A grating cleaning device is mounted in the center of the tank body through a rotating frame. The rotating frame rotates to enable the cleaning device to sequentially move to the position above the drainage well and the slag discharging well. At the drainage well, the cleaning device cleans and intercepts grid slag on the surface of the grid through negative pressure adsorption; and at the deslagging well, the cleaning device blows off and discharges the collected grid slag by utilizing positive pressure. According to the device, automatic and efficient cleaning of the intercepting grating is achieved, and the defects of manual cleaning and the problems caused by complex equipment are avoided.

The utility model relates to glass steel grating well drainage flow guide technical field especially glass steel grating well's drainage flow guide structure, including having drainage component, still including having screening deodorization component, the inside setting of drainage component has screening deodorization component, the upper port of drainage box is provided with glass steel mounting ring, the utility model discloses through filtering funnel and is filtered to the water that is passed into glass steel grating, and the water after filtering falls into the deodorization collection box through the deodorization bucket, and along with the rising of water level, and the water overflowed is discharged outward from the drainage hole of deodorization collection box, and the water reserved in the inside of deodorization collection box is used to liquid seal the airflow channel of deodorization bucket, thereby realizing the function of deodorization, and at the same time, the lower end of deodorization collection box is the sealing structure, makes the fine dirt of deodorization bucket discharge to be collected by deodorization collection box, thereby further improving the collection effect of dirt impurity.

The coal mining face coal seam water inrush flow prediction method and system first clearly proposes and utilizes the physical law that the product of the specific aquifer water inrush flow and the fixed point water pressure is a constant in the stable water inrush state, simplifies the complex water inrush flow prediction problem to the interpretation of the water level data which is easy to monitor, and realizes the real-time and rapid inversion of the water inrush flow. The background parameters are obtained through the early water drainage test, and the dynamic correction is combined with the mining distance, the dynamic characteristics of the mine production are fully considered, and the accuracy and reliability of the inversion result are significantly improved, and the actual mine production is more fitted. The contribution of each main aquifer to the mine water inrush can be accurately quantified, which provides important scientific basis for the mine drainage system capacity determination, the accurate judgment of water disaster risk, the optimization of water protection coal mining scheme and the protection of mine water resources, and is suitable for wide use and popularization in the field of coal mine water prevention and control technology.

The invention provides a gas well drainage gas recovery process decision-making method and system. The method comprises the following steps: firstly, collecting engineering parameters of a gas well to be operated; determining well bottom flow parameters by using a flow model based on the engineering parameters; flow pattern coordinate parameters of the gas-liquid two-phase flow are calculated, and the flow pattern type is judged according to the plate area reflected by the well bottom flow parameters and the flow pattern coordinate parameters; according to the engineering parameters and the bottom hole flow parameters, calculating the minimum bottom hole pressure required by the self-spraying liquid-carrying production and the height of a working fluid column of a production pipe column; the invention relates to a drainage and mining process based on required minimum bottom hole pressure and considering real-time decision matching of a flow pattern type and the height of a working fluid column of a production pipe column. By adopting the scheme, the problems of strong subjectivity, low efficiency and slow response of the existing decision-making means can be solved, and reliable decision-making support is provided for stable and high-quality construction of the drainage gas production project.

This invention discloses a sludge removal device for coal mine drainage, belonging to the field of coal mine sludge removal construction technology. The device includes a sludge removal pump and a sludge removal pipe. The output end of the sludge removal pump is connected to the sludge removal pipe, and the end of the sludge removal pipe is connected to a scraping device. The scraping device includes a hollow connecting rod. An impeller is rotatably connected to one side of the hollow connecting rod, and scraping claws are movably connected to both ends of the hollow connecting rod. A transmission mechanism is provided inside the hollow connecting rod, connected between the impeller and the scraping claws. The impeller rotates under the suction of the sludge removal pump, simultaneously driving the transmission mechanism. This, in turn, drives the scraping claws at both ends to swing relative to or in opposite directions, pushing the sludge towards the sludge removal pipe and discharging it from the pump. This invention, through two relatively swinging scraping claws, expands the sludge removal range, breaking up clumps of sludge and transporting them to the sludge removal pipe for rapid sludge removal. It solves the problems of low efficiency and difficult operation in existing coal mine sludge removal methods.