CN115193898A - Underground water in-situ reagent packing and injecting device and underground water repairing method - Google Patents
Underground water in-situ reagent packing and injecting device and underground water repairing method Download PDFInfo
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- CN115193898A CN115193898A CN202210715791.0A CN202210715791A CN115193898A CN 115193898 A CN115193898 A CN 115193898A CN 202210715791 A CN202210715791 A CN 202210715791A CN 115193898 A CN115193898 A CN 115193898A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
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Abstract
The invention belongs to the technical field of in-situ remediation of underground water, and relates to an underground water in-situ medicament packing and injecting device and an underground water remediation method, wherein the underground water in-situ medicament packing and injecting device comprises a double-channel injection short section, a packer, an ultrahigh-pressure water hose, a medicament hose, a gas hose and an injection port; the packer is sleeved on the dual-channel injection short section; the gas hose is communicated with the packer; the injection port is arranged on the double-channel injection short section; the ultrahigh pressure water hose is communicated with the injection port through the inside of the double-channel injection nipple; the medicament hose is communicated with the injection port through the inside of the double-channel injection short joint. The invention provides an underground water in-situ medicament packing and injecting device and an underground water repairing method, which can accurately inject a repairing medicament and improve the diffusion distance of the repairing medicament in an underground water-containing medium.
Description
Technical Field
The invention belongs to the technical field of in-situ remediation of underground water, and relates to a packing injection device and an underground water remediation method, in particular to an underground water in-situ agent packing injection device and an underground water remediation method for improving the permeability of low-permeability clay media and other dense stratum media to perform efficient underground water in-situ remediation.
Background
The groundwater pollution in China has a situation of developing from point pollution to strip and surface pollution, and the in-situ injection method has the advantages of no need of excavation, small disturbance and low cost, and becomes a development hotspot and direction of groundwater remediation. At present, the domestic engineering technology for in-situ remediation of underground water, particularly the research on the injection technology, is very short, and the requirement of underground water pollution treatment cannot be met.
Conventional groundwater in situ remediation injection wells are typically capable of having an overall permeability coefficient of 10 -4 The injection and diffusion of agents are carried out in homogeneous formations of cm/sec or higher, but effective repair agent injection and diffusion are difficult to carry out in low-permeability formations; in addition, another problem with conventional in situ remediation injection wells in low permeability environments is that the aquifer permeability coefficient is highly heterogeneous, even over typical 3 meter long screen lengths, with the permeability coefficient often varying by orders of magnitude. Considering that the volume flow entering different vertical layers in the screen pipe of the injection well is in direct proportion to the hydraulic conductivity coefficient of each vertical layer section, the vertical distribution of the injected repairing medicament has higher priority; that is, agents 90% or more of the total volume are easily pushed into the high permeability formation medium near less than 10% of the screen interval. Therefore, a new method for accurately injecting and improving the diffusion effect of the repairing medicament is needed to solve the problems that the traditional repairing medicament injection process is rough and the repairing medicament is difficult to diffuse in an aqueous medium.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides an underground water in-situ reagent packing and injecting device and an underground water remediation method, wherein the underground water in-situ reagent packing and injecting device can accurately inject a remediation reagent and can improve the diffusion of the remediation reagent in an underground water aquifer.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an underground water normal position medicament seals separates spouting device which characterized in that: the underground water in-situ medicament packing and injecting device comprises a double-channel injection nipple, a packer, an ultrahigh pressure water hose, a medicament hose, a gas hose and a jet orifice; the packer is sleeved on the double-channel injection short section; the gas hose is communicated with the packer; the injection port is arranged on the double-channel injection short section; the ultrahigh-pressure water hose is communicated with the injection port through the inside of the double-channel injection nipple; the medicament hose is communicated with the injection port through the inside of the double-channel injection nipple.
Preferably, the dual-channel injection nipple adopted by the invention comprises an injection nipple inner pipe and an injection nipple outer pipe; the injection nipple outer pipe is sleeved outside the injection nipple inner pipe; the injection nipple outer pipe is in non-contact with the injection nipple inner pipe; a liquid channel is formed between the injection nipple outer pipe and the injection nipple inner pipe; the packer is sleeved outside the outer pipe of the injection nipple; a nozzle is arranged on the inner pipe of the injection nipple; a nozzle is arranged on the outer pipe of the injection nipple; the position of the nozzle corresponds to the position of the nozzle; a nozzle on the inner pipe of the injection short section and a nozzle on the outer pipe of the injection short section form a whole to form a jet orifice on the dual-channel injection short section; the medicament hose is communicated with the nozzle through an annular liquid channel between the inner pipe and the outer pipe; the ultrahigh pressure water hose is communicated with the nozzle through an injection nipple inner pipe.
Preferably, the dual-channel injection nipple adopted by the invention further comprises a medicament extrusion ring which is arranged on the outer pipe of the injection nipple and is arranged at the nozzle.
Preferably, the number of the nozzles adopted by the invention is one or more; the number of the nozzles is the same as the number of the nozzles.
Preferably, when the nozzle adopted by the invention is a plurality of nozzles, the plurality of nozzles are divided into one row or a plurality of rows and are uniformly distributed outside the inner pipe of the injection nipple.
Preferably, the packer adopted by the invention comprises an upper packer and a lower packer; the upper packer and the lower packer are sequentially sleeved outside the short section injection outer pipe from top to bottom; the jet orifice is arranged between the upper packer and the lower packer; the gas hose is respectively communicated with the upper packer and the lower packer; the upper packer and the lower packer are both rubber pressurizing packers.
Preferably, the underground water in-situ reagent packing and injecting device adopted by the invention further comprises an ultrahigh pressure water pump, an air compressor and a reagent injection pump; the ultrahigh pressure water pump is communicated with the ultrahigh pressure water hose; the air compressor is communicated with the air hose; the medicament injection pump is communicated with the medicament hose.
Preferably, the underground water in-situ reagent packing and jetting device adopted by the invention further comprises a lifting lug arranged at the top end part of the double-channel injection short section and a lifting rope arranged on the lifting lug.
The groundwater remediation method based on the groundwater in-situ reagent packing and injecting device is characterized in that: the method comprises the following steps:
1) Determining stratum horizons and pollution plume ranges of underground water pollutants to be repaired;
2) Forming a hole in an area to be repaired, placing a PVC sleeve with a closed bottom end in the hole, and pouring cement into the annular space between the PVC sleeve and the borehole to form a cement sheath until the cement sheath is solidified to build a special injection well;
3) Assembling an underground water in-situ reagent injection packing device;
4) Placing the underground water in-situ reagent injection packing device assembled in the step 3) at the deepest position of an area to be repaired needing operation through a rope, fixing the underground water in-situ reagent injection packing device on the inner wall of a PVC sleeve after the upper packer and the lower packer are inflated and expanded, and forming a closed space among the upper packer, the PVC sleeve and the lower packer;
5) Injecting ultrahigh-pressure water into the inner pipe of the injection short section through an ultrahigh-pressure water pump and an ultrahigh-pressure water hose, and sequentially puncturing a PVC sleeve, a cement ring and surrounding stratum media of an area to be repaired after the ultrahigh-pressure water passes through the inside of the injection short section and a jet orifice, so as to form a fracture network in an underground water aquifer of the area to be repaired;
6) And (3) after the step 5) is finished, injecting a liquid medicament into a liquid channel between the injection nipple and the inner tube of the injection nipple through a medicament injection pump and a medicament hose, enabling the liquid medicament to flow into a closed space formed by an upper packer, a lower packer and a PVC sleeve after passing through the inside of the injection nipple and a jet orifice, and enabling the liquid medicament to enter a groundwater aquifer through the fracture network formed in the step 5) until the area to be repaired is repaired.
7) The steps 5) and 6) can be repeated according to the concentration distribution condition of the underground water pollutants to enhance the diffusion distance of the medicament and promote the mixing of the medicament and the underground water containing medium, thereby improving the repairing effect.
Preferably, the method adopted by the invention further comprises, after step 7):
9) And after the step 7) is finished, releasing the pressure of the upper packer and the lower packer, lifting the underground water in-situ agent injection packer to the next section of operation layer by using a lifting rope, and repeating the steps 4) to 6) until the operation layer is repaired 10) and repeating the step 7) until the whole region to be repaired is repaired.
The invention has the advantages that:
the invention provides an underground water in-situ reagent packing and injecting device and an underground water repairing method, wherein the underground water in-situ reagent packing and injecting device comprises a double-channel injection short joint, a packer, an ultrahigh pressure water hose, a reagent hose, a gas hose and an injection port; the packer is sleeved on the dual-channel injection short section; the gas hose is communicated with the packer; the injection port is arranged on the double-channel injection short section; the ultrahigh pressure water hose is communicated with the jet orifice through the inside of the double-channel injection short section; the medicament hose is communicated with the injection port through the inside of the double-channel injection nipple. The method can accurately inject the repairing medicament into the low-permeability heterogeneous water-bearing stratum and improve the diffusion of the repairing medicament in the underground water, and the repairing activity of the underground water is realized by matching the underground water in-situ medicament packing and injecting device with the ground ultrahigh pressure water pump, the medicament injection pump and the air compressor. Wherein: the ultrahigh-pressure water pump transmits ultrahigh-pressure water to the underground water in-situ medicament packing and injecting device through an ultrahigh-pressure water hose designed for hydraulic jet service by pressurization of a plunger pump, the medicament injection pump transmits medicament to the underground water in-situ medicament packing and injecting device through a hose designed for medicament injection service by pressurization of a plunger, and the air compressor provides compressed air for a straddle type packer in the underground water in-situ medicament packing and injecting device. Ultrahigh-pressure water is ejected through a nozzle on an injection nipple in the middle of the device, the water jet instantaneously breaks through a stratum medium to open a channel and generate a fracture network, a repairing medicament is immediately and rapidly injected into the fracture network, and then the medicament/water is switched to promote the mixing of the medicament and the underground water-containing medium. The goal of this method is to increase the overall permeability coefficient and the agent transport influence Radius (ROI) of the formation medium to promote in situ remediation of groundwater in a low permeability heterogeneous formation medium. A fracture network opened by hydraulic jets through such devices typically increases hydraulic conductivity by one or several orders of magnitude, allowing for more efficient injection and mixing of the agent.
Drawings
FIG. 1 is a schematic structural view of an in situ groundwater reagent packing and injection device according to the present invention;
FIG. 2 is a schematic cross-sectional structure diagram of a dual-channel injection nipple adopted by the invention;
FIG. 3 is a schematic view of groundwater remediation by the groundwater in situ chemical sequestration injection apparatus provided in accordance with the present invention;
wherein:
1-lifting a rope; 2-ultrahigh pressure water hose; 3-a medicament hose; 4-a gas hose; 5, mounting a packer; 6-injection nipple inner tube; 7-injecting a short section outer tube; 8-a nozzle; 9-agent extrusion ring; 10-lifting the ears; 11-lower packer; 12-an ultrahigh pressure water pump; 13-an air compressor; 14-a medicament infusion pump; 15-direction of agent flow; 16-direction of flow of ultra-high pressure water.
Detailed Description
Referring to fig. 1 and the drawings, the invention provides an underground water in-situ medicament packing and jetting device, which comprises a double-channel injection short section, a packer, an ultrahigh pressure water hose 2, a medicament hose 3, a gas hose 4 and a jetting port; the packer is sleeved on the dual-channel injection short section; the gas hose 4 is communicated with the packer; the injection port is arranged on the double-channel injection short section; the ultrahigh pressure water hose 2 is communicated with the jet orifice through the inside of the double-channel injection short section; the medicament hose 3 is communicated with the injection port through the inside of the double-channel injection short joint.
Referring to fig. 2, the dual-channel injection nipple adopted by the invention comprises an injection nipple inner pipe 6 and an injection nipple outer pipe 7; the injection nipple outer pipe 7 is sleeved outside the injection nipple inner pipe 6; the injection nipple outer pipe 7 and the injection nipple inner pipe 6 are in non-contact; a liquid channel is formed between the injection nipple outer pipe 7 and the injection nipple inner pipe 6; the packer is sleeved outside the injection nipple outer pipe 7; a nozzle 8 is arranged on the inner pipe 6 of the injection nipple; a nozzle is arranged on the injection nipple external pipe 7; the position of the spout corresponds to the position of the nozzle 8; a nozzle 8 on the inner pipe 6 of the injection nipple and a nozzle on the outer pipe 7 of the injection nipple are integrally formed into a jet orifice on the double-channel injection nipple; the medicament hose 3 is communicated with the nozzle through a liquid channel; the ultrahigh pressure water hose 2 is communicated with a nozzle 8 through an injection nipple inner pipe 6.
The double-channel injection nipple also comprises a medicament extrusion ring 9 which is arranged on the outer tube 7 of the injection nipple and is arranged at the nozzle. The number of the nozzles 8 is one or more; the number of nozzles 8 is the same as the number of spouts; when the nozzle 8 is a plurality of nozzles, the nozzles 8 are uniformly distributed outside the inner pipe 6 of the injection nipple in rows.
Referring to fig. 1, the packers include an upper packer 5 and a lower packer 11; the upper packer 5 and the lower packer 11 are sequentially sleeved outside the injection nipple outer pipe 7 from top to bottom; the jet orifice is arranged between the upper packer 5 and the lower packer 11; the gas hose 4 is respectively communicated with the upper packer 5 and the lower packer 11; the upper packer 5 and the lower packer 11 are both rubber pressurized packers.
In addition, the underground water in-situ medicament packing and injecting device provided by the invention also comprises an ultrahigh pressure water pump 12, an air compressor 13 and a medicament injection pump 14; the ultrahigh pressure water pump 12 is communicated with the ultrahigh pressure water hose 2; the air compressor 13 is communicated with the air hose 4; the drug infusion pump 14 communicates with the drug tube 3. The underground water in-situ reagent packing and jetting device further comprises a lifting lug 10 arranged at the top end of the double-channel injection short section and a lifting rope 1 arranged on the lifting lug 10.
A groundwater remediation method based on the groundwater in-situ reagent packing injection device as described above, the method comprising the steps of:
1) After a detailed site hydrogeology survey and an underground water pollutant distribution survey, determining a stratum horizon and a pollution plume range in which the underground water pollutant to be repaired exists;
2) After the area to be repaired is determined, a hole is vertically or angularly formed by using a spiral drilling mode (such as air drilling, sonic drilling and direct pushing) without being limited to the spiral drilling mode, a PVC casing pipe with a closed bottom end is placed in the hole, cement is poured into the PVC casing pipe and the annular space of the well hole to form a cement ring, the purpose of the cement ring is to prevent high-pressure fluid from flowing up and down in the space of the casing pipe and the annular space of the well hole in the jet flow hole opening process, and the next operation can be carried out when the cement ring is solidified.
3) The underground water in-situ medicament packing and injecting device is connected with an ultrahigh pressure water pump, a medicament injection pump and an air compressor through corresponding service hoses and is connected with a lifting lug at the top end of the device through a rope.
4) A plurality of perforating and medicine injecting operation positions are set in a vertical PVC sleeve, the device is placed at the deepest position needing operation through a rope, an air compressor inflates an upper packer and a lower packer of the device to enable the device to be expanded, so that the device is firmly fixed on the inner wall of the PVC sleeve, and an airtight space formed between the upper packer and the lower packer after expansion and the inner wall of the PVC sleeve guarantees that subsequent water and a medicament can be limited to be prevented from channeling up and down in the airtight space position during perforating and medicine injecting operation.
5) Jetting ultrahigh-pressure water into the injection nipple inner pipe 6 through an ultrahigh-pressure water pump 12 and an ultrahigh-pressure water hose 2, and after the ultrahigh-pressure water passes through the inside of the injection nipple and a jet orifice, sequentially puncturing a PVC pipe, a cement ring and surrounding stratum media of an area to be repaired along the flow direction 16 of the ultrahigh-pressure water to form a fracture network in the area to be repaired; generally, on the same horizontal plane of the injection short section, two nozzles can be arranged, namely, the nozzles are symmetrically arranged, three nozzles can be arranged, namely, one nozzle is arranged at intervals of 120 degrees, four nozzles can be arranged, namely, one nozzle is arranged at intervals of 90 degrees, and the arrangement modes of the nozzles meet the requirement of central symmetry arrangement so as to counteract the influence of recoil of each nozzle during injection.
6) After the injection operation is completed, the pressurized liquid medicament flows through a flow channel between the inner pipe and the outer pipe of the injection short section, namely an outer channel, flows into a space formed by the upper packer and the lower packer and the PVC sleeve through an extrusion ring formed by the opening of the outer pipe and the nozzle on the inner pipe, and the high-pressure medicament enters a formation medium through a pore network jetted by the ultrahigh-pressure water jet in the medicament flow direction 15. It is also worth noting that the ultrahigh pressure water hose and the high pressure medicament hose of the device are respectively provided with a check valve to prevent the occurrence of cross flow during high pressure fluid operation.
7) After the step 6) is finished, the upper packer and the lower packer are decompressed, the underground water in-situ reagent injection packer is lifted to the next section of operation layer by the lifting rope 1, and the steps 4) to 6) are repeated until the repair work of the operation layer is finished;
the underground water in-situ medicament packing and injecting device and the underground water repairing method provided by the invention adopt ultrahigh pressure (more than or equal to 30 Mpa) water jet, can open the fracture with the length of more than 3m of compact low-permeability stratum medium, greatly improve the diffusion range of the medicament in the underground water and enhance the underground water repairing effect. The injection nipple of the underground water in-situ medicament packing and injecting device is designed into a double-channel mode, the upstream hoses of all the channels are provided with check valves, so that the medicament injection work of the outer channel can be instantly carried out after the ultrahigh-pressure water jet of the inner channel is finished, and liquid among all the channels cannot flow by cross flow. The invention can be pulled by a rope to freely move up and down along the inner wall of the PVC casing pipe under the unexpanded state of the upper packer and the lower packer, and the packers can be fixed at the accurate formation depth under the expanded state so as to carry out high-pressure water jet and medicament injection operation. The upper and lower packers in the expansion state can form a closed space with the inner wall of the PVC casing pipe, so that the agent can be squeezed into the stratum under a certain pressure. The hydraulic communication is carried out between the high-pressure hose and ground equipment, the high-pressure hose is continuous, and the problem that the sealing of the interfaces between the rods is not tight under the condition that metal rods are connected one by one in the conventional operation is solved. The inner wall of the PVC pipe is smooth, the device can easily select the position of an operation layer from top to bottom, the packer in an expansion state can be perfectly attached to the inner wall of the PVC pipe, and the repairing method can repair deeper underground water pollution.
Claims (10)
1. The utility model provides an underground water normal position medicament seals separates spouting device which characterized in that: the underground water in-situ medicament packing and injecting device comprises a double-channel injection nipple, a packer, an ultrahigh pressure water hose (2), a medicament hose (3), a gas hose (4) and a jet orifice; the packer is sleeved on the double-channel injection short section; the gas hose (4) is communicated with the packer; the injection port is arranged on the double-channel injection short section; the ultrahigh-pressure water hose (2) is communicated with the jet orifice through the inside of the double-channel injection nipple; the medicament hose (3) is communicated with the jet orifice through the inside of the double-channel injection short section.
2. An underground water in-situ reagent packing injection device according to claim 1, wherein: the double-channel injection short section comprises an injection short section inner pipe (6) and an injection short section outer pipe (7); the injection short section outer pipe (7) is sleeved outside the injection short section inner pipe (6); the injection short section outer pipe (7) and the injection short section inner pipe (6) are in non-contact; a liquid channel is formed between the injection nipple outer pipe (7) and the injection nipple inner pipe (6); the packer is sleeved outside the injection nipple outer pipe (7); a nozzle (8) is arranged on the injection nipple inner pipe (6); a nozzle is arranged on the injection nipple external pipe (7); the position of the spout corresponds to the position of the nozzle (8); a nozzle (8) on the injection nipple inner pipe (6) and a nozzle on the injection nipple outer pipe (7) are integrally formed into a jet orifice on the double-channel injection nipple; the medicament hose (3) is communicated with the nozzle through a liquid channel between the inner pipe and the outer pipe; the ultrahigh pressure water hose (2) is communicated with the nozzle (8) through an injection nipple inner pipe (6).
3. An underground water in-situ reagent packing injection device according to claim 2, wherein: the double-channel injection short section also comprises a medicament extrusion ring (9) which is arranged on the outer pipe (7) of the injection short section and is arranged at the nozzle.
4. An in situ groundwater reagent packing injection device as claimed in claim 3, wherein: the number of the nozzles (8) is one or more; the number of the nozzles (8) is the same as the number of the nozzles.
5. An underground water in-situ reagent packing injection device according to claim 4, wherein: when a plurality of nozzles (8) are arranged, the nozzles (8) are divided into one row or a plurality of rows and uniformly distributed outside the inner pipe (6) of the injection nipple.
6. An in situ groundwater reagent packing injection device as claimed in claim 5, wherein: the packer comprises an upper packer (5) and a lower packer (11); the upper packer (5) and the lower packer (11) are sequentially sleeved outside the injection nipple outer pipe (7) from top to bottom; the jet orifice is arranged between the upper packer (5) and the lower packer (11); the gas hose (4) is respectively communicated with the upper packer (5) and the lower packer (11); the upper packer (5) and the lower packer (11) are both rubber pressurizing packers.
7. A groundwater in situ reagent pack injection apparatus as claimed in any of claims 1 to 6, wherein: the underground water in-situ medicament packing and injecting device further comprises an ultrahigh pressure water pump (12), an air compressor (13) and a medicament injection pump (14); the ultrahigh-pressure water pump (12) is communicated with the ultrahigh-pressure water hose (2); the air compressor (13) is communicated with the air hose (4); the medicine injection pump (14) is communicated with the medicine hose (3).
8. An in situ groundwater reagent packing injection device as claimed in claim 7, wherein: the underground water in-situ medicament packing and jetting device further comprises a lifting lug (10) arranged at the top end of the double-channel injection short section and a lifting rope (1) arranged on the lifting lug (10).
9. A groundwater remediation method based on the groundwater in situ reagent pack injection apparatus of claim 8, wherein: the method comprises the following steps:
1) Determining stratum horizons and pollution plume ranges of underground water pollutants to be repaired;
2) Forming a hole in an area to be repaired, placing a PVC sleeve with a closed bottom end in the hole, and pouring cement into the annular space between the PVC sleeve and the borehole to form a cement sheath until the cement sheath is solidified to build a special injection well;
3) Assembling a groundwater in situ reagent pack injection apparatus as claimed in claim 8;
4) Placing the underground water in-situ medicament packing and injecting device assembled in the step 3) at the deepest position of an area to be repaired needing operation through a rope, fixing the underground water in-situ medicament packing and injecting device on the inner wall of a PVC (polyvinyl chloride) sleeve after the upper packer and the lower packer are inflated and expanded, and forming a closed space among the upper packer, the PVC sleeve and the lower packer;
5) Jetting ultrahigh-pressure water into the inner pipe (6) of the injection nipple joint through an ultrahigh-pressure water pump (12) and an ultrahigh-pressure water hose (2), and sequentially puncturing a PVC sleeve, a cement ring and surrounding stratum media of an area to be repaired after the ultrahigh-pressure water passes through the inside of the injection nipple joint and a jet orifice, so as to form a fracture network in an underground water aquifer of the area to be repaired;
6) After the step 5) is finished, injecting a liquid medicament into an annular liquid channel between an injection nipple outer pipe (7) and an injection nipple inner pipe (6) through a medicament injection pump (14) and a medicament hose (3), wherein the liquid medicament flows into a closed space formed by an upper packer, a lower packer and a PVC sleeve after passing through the inside of the injection nipple and a jet orifice, and enters a groundwater aquifer through a fracture network formed in the step 5) until the area to be repaired is repaired.
10. The method of claim 9, wherein: the method further comprises, after step 6):
7) After the step 6) is finished, the upper packer and the lower packer are decompressed, the underground water in-situ medicament packing and injecting device is lifted to the next section of operation position through the lifting rope (1), and the steps 4) to 6) are repeated until the repairing work of the operation position is finished;
8) And 7) repeating the step 7) until the repairing work of the whole area to be repaired is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210715791.0A CN115193898A (en) | 2022-06-22 | 2022-06-22 | Underground water in-situ reagent packing and injecting device and underground water repairing method |
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| CN107096793A (en) * | 2017-06-21 | 2017-08-29 | 南京贻润环境科技有限公司 | It is a kind of to be used for the high-pressure injection boring rod set of in-situ immobilization soil and underground water pollution |
| CN111589854A (en) * | 2019-02-20 | 2020-08-28 | 中国石油天然气股份有限公司 | Be used for prosthetic binary channels layering injection device of contaminated site normal position |
| CN212238608U (en) * | 2020-07-02 | 2020-12-29 | 上海市城市建设设计研究总院（集团）有限公司 | Adjustable repair well system for soil and underground water repair |
| CN114433612A (en) * | 2022-01-19 | 2022-05-06 | 合肥工业大学 | VOCs pollutes soil body reinforcing aeration prosthetic devices |
| CN115126408A (en) * | 2022-06-02 | 2022-09-30 | 江苏大地益源环境修复有限公司 | Repair medicament reinforced in-situ direct-pushing injection drilling tool and injection method |
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