CN112177564B - High-pressure jet grouting system for building underground concealed reservoir and building method - Google Patents
High-pressure jet grouting system for building underground concealed reservoir and building method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 136
- 238000005086 pumping Methods 0.000 claims abstract description 93
- 238000005553 drilling Methods 0.000 claims abstract description 77
- 239000002002 slurry Substances 0.000 claims abstract description 53
- 238000009412 basement excavation Methods 0.000 claims abstract description 31
- 239000011083 cement mortar Substances 0.000 claims abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000002562 thickening agent Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 239000011435 rock Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B12/00—Accessories for drilling tools
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Abstract
A high-pressure jet grouting system and a construction method for constructing an underground concealed reservoir are disclosed, wherein the system comprises a water pumping and grouting system, a slurry pumping system and a sealed excavation system; the water pumping and grouting system comprises a grouting pump and a water pump, wherein the grouting pump is connected with a grouting pipe, and the water pump is connected with a water pumping pipe; the slurry pumping system comprises a slurry pumping pump, and the slurry pumping pump is connected with a slurry pumping pipe; the sealed excavation system comprises a hydraulic jet drilling machine, wherein the top of the hydraulic jet drilling machine is provided with a plurality of guide pipes, the guide pipes inject water, gas and cement mortar into the hydraulic jet drilling machine and are sprayed by a hydraulic jet drilling machine head after being pressurized, the method comprises the steps of pressurizing by utilizing a pressurizing motor in the drilling machine, carrying out rotary jet high-pressure jet cutting on rock and soil mass at the lower part of a aquifer, excavating a cavity of a reservoir, pumping water to clean the cavity, introducing high-temperature gas, simply drying the cavity wall and the cavity bottom, and finally injecting cement mortar. The invention has the advantage that the underground closed water reservoir is formed.
Description
Technical Field
The invention relates to a high-pressure jet grouting system for building an underground concealed reservoir and a building method, belonging to the technical field of geotechnical engineering.
Background
The reservoir is used as a common water storage facility and plays an indispensable role in water storage in the fields of living production, engineering construction and the like. At present, a large number of water storage tank construction technologies and methods exist in China, but most of the water storage tanks are ground or underground open water storage tanks, and the construction technologies and methods for underground closed water storage tanks are few. Compared with the former, the underground closed reservoir has the advantages of strong concealment, no occupation of ground surface space and the like, and can temporarily provide a large amount of water in emergency. Therefore, if an underground closed reservoir can be built, good water storage guarantee can be provided for engineering and life.
Disclosure of Invention
The invention aims to solve the problems and provides a high-pressure jet grouting system and a construction method for constructing an underground concealed reservoir. The reservoir utilizes the characteristics of low environmental pollution, accurate operation range and undamaged original structure of a high-pressure jet grouting technology to cut an underground rock-soil structure to generate a closed cavity, and then performs anti-seepage treatment on the bottom of the closed reservoir to achieve the purposes of automatically storing water and retaining water.
The invention aims to solve the technical problems and adopts the technical scheme that the high-pressure jet grouting system for building the underground concealed reservoir comprises a water pumping and grouting system, a slurry pumping system and a sealed excavation system;
the water pumping and grouting system comprises a grouting pump and a water pump, the grouting pump is connected with a grouting pipe, and the water pump is connected with a water pumping pipe;
the slurry pumping system comprises a slurry pumping pump, and the slurry pumping pump is connected with a slurry pumping pipe;
the sealed excavation system comprises a hydraulic jet drilling machine, wherein the top of the hydraulic jet drilling machine is provided with a plurality of guide pipes, and the guide pipes are injected with water, gas and cement mortar to be pressurized and then are jetted through a hydraulic jet drilling machine head.
Furthermore, the system comprises a water pumping system, a grouting system, a sealed excavation system and a slurry pumping system which are sequentially arranged along the flow direction of underground water.
Further, the hydraulic jet drilling machine is composed of an inner pipe and a sleeve pipe sleeved outside the inner pipe, and a jet device is arranged at the bottom of the inner pipe and connected with a drill bit.
Furthermore, a clearance cavity is formed between the sleeve and the inner pipe, and high-temperature gas can be led out of the hydraulic jet drilling machine through the clearance cavity.
Furthermore, the inner tube on be equipped with the booster motor, the booster motor has the pressure regulating knob switch, accessible knob switch control injection apparatus jet pressure intensity size.
Furthermore, the water suction pump is connected with at least one conduit on the top of the hydraulic jet drilling machine.
The method for constructing the underground concealed water reservoir comprises the following steps:
step 1: according to the field situation, selecting a proper position outside the design width range of the reservoir to drill a water pumping hole and a slurry pumping hole through a drilling machine, distributing the water pumping hole along the direction of underground water flow, and distributing the slurry pumping hole along the direction of the underground water flow;
step 2: after the water pumping hole is drilled, the drilling machine is removed, a grouting pipe and a water pumping pipe are placed downwards in the hole, the water pumping pipe and the grouting pipe are arranged along the direction of underground water flow, the water pumping pipe is connected with a water pumping pump and pumps water outwards, and meanwhile concrete containing a thickening agent and an accelerating agent is poured into the grouting pipe to block a water-bearing stratum; after the drilling of the slurry pumping hole is finished, the drilling machine is removed, the slurry pumping pipe is placed in the slurry pumping hole, and the slurry pumping pump is connected with the slurry pumping pipe;
completing the sealing work of the aquifer before excavating the reservoir through Step 1-Step 2, and providing a power source for subsequent excavation work;
step 3: moving the hydraulic jet drilling machine to the excavation position of the reservoir and installing the hydraulic jet drilling machine in place, and connecting the water suction pump with a conduit of the hydraulic jet drilling machine;
step 4: after the connection is finished, the hydraulic jet drilling machine starts to drill, when the hydraulic jet drilling machine drills to the position of the top plate of the lower water-resisting layer, the switch is controlled to stop the drilling of the casing of the hydraulic jet drilling machine, and a drill bit connected with the jet device is made to continue to drill to the designed bottom depth of the reservoir;
step 5: opening a booster motor and a water suction pump to enable the jet flow of the jet device to jet and cut the soil body, slowly lifting the jet device in the cutting process until the top plate of the lower water-resisting layer is cut through and communicated with the aquifer, and finally forming a cylindrical cavity which is formed at the lower part of the aquifer and communicated with the aquifer;
step 6: when the jet device performs jet cutting, a slurry pump is opened, slurry formed by mixing the cut soil body and jet water is pumped out for cavity cleaning treatment;
and (5) finishing excavation of the reservoir cavity.
Further, in Step1, according to the area of the actual excavation reservoir, decomposing the reservoir into a plurality of circles with the same area size, wherein the center of each circle is positioned on three vertexes of an equilateral triangle, so that the superposed areas of the three circles are equal, and the three circles are intersected at one point;
step 7: and repeating Step 3-Step 6 for each circle, and connecting the excavated circles to form a complete reservoir cavity.
Further, Step 8: after excavation of the reservoir cavity is completed: closing the water supply of the injection device, connecting a gas guide pipe, introducing high-temperature gas into the reservoir cavity, drying the inner wall of the reservoir cavity, and discharging the gas through a gap cavity between the sleeve and the inner pipe;
step 9: closing a gas guide pipe of the drilling machine, communicating a cement mortar guide pipe, opening a pressurizing motor, injecting cement mortar into the hydraulic jet drilling machine, and spraying the cement mortar on the inner wall of the water storage tank cavity for seepage-proofing treatment by adjusting the power of the pressurizing motor and the position of a spray head;
step 10: after cement mortar on the inner wall of the cavity of the reservoir is solidified and hardened, all devices and equipment are removed, the hydraulic jet drilling machine is remounted to the water pumping hole in Step1 and extends into the aquifer, the concrete used for plugging the aquifer before is cut off by high-pressure jet, the underground water flows into the reservoir, and finally the water storage work of the underground reservoir is completed.
The invention has the advantages that 1) the method for automatically storing the water of the underground closed reservoir by utilizing the mobility of the aquifer water. The invention utilizes the high-pressure jet grouting technology and the self-flowing characteristic of an underground water-bearing layer, improves the traditional high-pressure jet drilling machine device, injects underground water extracted from the water-bearing layer into the drilling machine, utilizes a booster motor in the drilling machine to pressurize and then carries out rotary jet high-pressure jet cutting on rock and soil mass at the lower part of the water-bearing layer, excavates a cavity of a reservoir, carries out cavity cleaning treatment by a water pumping pipe, then introduces high-temperature gas into the drilling machine, simply dries the cavity wall and the cavity bottom, discharges the gas from the cavity through a gap between an inner sleeve and an outer sleeve of the drilling machine, finally injects cement mortar, pressurizes and then carries out rotary jet cement mortar to carry out anti-seepage treatment on the side wall and the bottom surface of the cavity, thereby completing underground construction of the reservoir, forming an underground closed reservoir and meeting the requirement of water supply in emergency.
2) The soil body is cut by pumping water of the aquifer to carry out pressurized jet flow without additional supply, thereby saving resources
3) By pumping the water of the aquifer, the problem that the pressure is too high due to the blocking of the aquifer is effectively avoided
A series of problems.
4) Need not artificial operation retaining, the reservoir accessible aquifer gravity flow effect is independently retained water, practices thrift a large amount of manpower and materials.
5) The water source flow of the aquifer enables the stored water in the reservoir to be running water instead of dead water, and the problem of deterioration of the stored water can be effectively avoided.
6) The reservoir is underground closed, has considerable concealment, and can meet the concealment type water storage requirements of some special projects.
7) The high-pressure jet drilling machine adopts an inner sleeve and an outer sleeve double-layer design, and can effectively reduce the frictional resistance between the rotation of the device and the soil body during the jet cutting.
8) The high-pressure jet drilling machine adopts the double-layer design of the inner sleeve and the outer sleeve, so that a cavity is reserved in the middle, and high-temperature gas for drying the pool wall can be discharged from the pool cavity through the cavity of the device.
9) The excavation sequence shown in the figure 3 adopted by the method successfully avoids the danger of hole collapse caused by overlarge bending moment of the upper soil body in the excavation process due to overlarge span of the impounding reservoir.
10) The excavation sequence shown in the figure 3 adopted by the method technology can reduce the moving distance of the drilling machine every time, and the newly excavated cylindrical cavity every time is connected with the previously excavated cavity into a whole, so that a water pump for removing the cavity is not needed, and the labor and the time are saved.
10. The excavation distance shown in fig. 3 adopted by the method can improve the efficiency to the maximum extent on the premise of ensuring the safety.
Drawings
The invention is further illustrated with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of a hydraulic jet drilling machine.
Fig. 2 is a schematic cross-sectional view of a high pressure jet grouting system for constructing an underground concealed reservoir.
Fig. 3 is a plan view of the excavation sequence of the reservoir cavity.
As shown in the figure, the device comprises a water pumping and grouting system A, a slurry pumping system B, a sealed excavation system C, a grouting pump 1, a water pumping pump 2, a grouting pipe 3, a water pumping pipe 4, a slurry pumping pump 5, a slurry pumping pipe 6, a hydraulic jet drilling machine 7, an inner pipe 8, a sleeve 9, a jet device 10, a drill bit 11 and a booster motor 12.
Detailed Description
As shown in fig. 2, a high-pressure jet grouting system for constructing an underground concealed reservoir comprises a water pumping and grouting system A, a slurry pumping system B and a sealed excavation system C;
the pumping and grouting system A comprises a grouting pump 1 and a water suction pump 2, the grouting pump 1 is connected with a grouting pipe 3, and the water suction pump 2 is connected with a water suction pipe 4;
the slurry pumping system B comprises a slurry pumping pump 5, and the slurry pumping pump 5 is connected with a slurry pumping pipe 6;
the sealed excavation system C comprises a hydraulic jet drilling machine 7, a plurality of guide pipes are arranged at the top 7 of the hydraulic jet drilling machine, and the guide pipes 8 are filled with water, gas and cement mortar and are sprayed through a hydraulic jet drilling machine head after being pressurized.
The system comprises a water pumping and grouting system A, a sealed excavation system C and a slurry pumping system B which are sequentially arranged along the flow direction of underground water.
Preferably, the water pump 2 is connected with at least one conduit on the top of the hydraulic jet drilling machine 7, and the water pump 2 can pump water into the hydraulic jet drilling machine 7 through the conduit.
As shown in fig. 1, the hydraulic jet drilling machine 7 is an inner pipe 8 and a sleeve 9 sleeved outside the inner pipe 8, the bottom of the inner pipe 8 is provided with a jet device 10, the jet device 10 is connected with a drill bit 11, and the jet device 10 and the drill bit 11 form a hydraulic jet drilling machine head.
Preferably, a clearance cavity is formed between the sleeve 9 and the inner pipe 8, and the clearance cavity can lead high-temperature gas out of the hydraulic jet drilling machine 7.
Preferably, the inner tube 8 is provided with a booster motor 12, the booster motor 12 is provided with a pressure regulating knob switch, and the intensity of the jet pressure of the injection device 10 can be controlled through the knob switch.
The construction method comprises the following steps:
step 1: according to the field situation, selecting a proper position outside the design width range of the reservoir to drill a water pumping hole and a slurry pumping hole through a drilling machine, distributing the water pumping hole along the direction of underground water flow, and distributing the slurry pumping hole along the direction of the underground water flow;
step 2: after the water pumping hole is drilled, the drilling machine is removed, a grouting pipe and a water pumping pipe are placed downwards in the hole, the water pumping pipe and the grouting pipe are arranged along the direction of underground water flow, the water pumping pipe is connected with a water pumping pump and pumps water outwards, and meanwhile concrete containing a thickening agent and an accelerating agent is poured into the grouting pipe to block a water-bearing stratum; after the drilling of the slurry pumping hole is finished, the drilling machine is removed, the slurry pumping pipe is placed in the slurry pumping hole, and the slurry pumping pump is connected with the slurry pumping pipe;
completing the sealing work of the aquifer before excavating the reservoir through Step 1-Step 2, and providing a power source for subsequent excavation work;
step 3: moving the hydraulic jet drilling machine to the excavation position of the reservoir and installing the hydraulic jet drilling machine in place, and connecting the water suction pump with a conduit of the hydraulic jet drilling machine;
step 4: after the connection is finished, the hydraulic jet drilling machine starts to drill, when the hydraulic jet drilling machine drills to the position of the top plate of the lower water-resisting layer, the switch is controlled to stop the drilling of the casing of the hydraulic jet drilling machine, and a drill bit connected with the jet device is made to continue to drill to the designed bottom depth of the reservoir;
step 5: opening a booster motor and a water suction pump to enable the jet flow of the jet device to jet and cut the soil body, slowly lifting the jet device in the cutting process until the top plate of the lower water-resisting layer is cut through and communicated with the aquifer, and finally forming a cylindrical cavity which is formed at the lower part of the aquifer and communicated with the aquifer;
step 6: and opening a slurry pump while the jet device performs jet cutting, and pumping out slurry formed by mixing the cut soil body and jet water for cavity cleaning treatment. Step 7: and repeating the steps 3-6, and excavating and constructing in sequence according to the sequence shown in the figure 3, so that the five cylindrical cavities are connected into a whole complete reservoir cavity.
In the Step1, according to the area of an actually excavated reservoir, the reservoir is divided into a plurality of circles F1-F2-F3-F4-F5-F6-F7-F8-F9-F10-F11-F12-F13-F14 with the same area, the circle center of each circle is positioned on three vertexes of an equilateral triangle (the diameter of each circle is preferably not more than 2 m), the overlapping areas of the three circles are equal, and the three circles are intersected at one point;
step 7: and repeating Step 3-Step 6 for each circle, and connecting the excavated circles to form a complete reservoir cavity.
The excavation and cavity cleaning of the whole reservoir cavity are completed through steps 3-7;
step 8: after excavation of the reservoir cavity is completed: closing the water supply of the injection device, connecting a gas guide pipe, introducing high-temperature gas into the reservoir cavity, drying the inner wall of the reservoir cavity, and discharging the gas through a gap cavity between the sleeve and the inner pipe;
step 9: closing a gas guide pipe of the drilling machine, communicating a cement mortar guide pipe, opening a pressurizing motor, injecting cement mortar into the hydraulic jet drilling machine, and spraying the cement mortar on the inner wall of the water storage tank cavity for seepage-proofing treatment by adjusting the power of the pressurizing motor and the position of a spray head;
step 10: after cement mortar on the inner wall of the cavity of the reservoir is coagulated and hardened, all devices and equipment are removed, the hydraulic jet drilling machine is installed to the water pumping hole in Step1 again and extends into the aquifer, concrete used for blocking the aquifer before is cut through by high-pressure jet, underground water flows into the reservoir, and finally the water storage work of the underground reservoir is completed.
Finally, an underground closed reservoir is built by utilizing the gravity flow characteristic of underground water on the basis of a high-pressure jet grouting technology through Step 1-Step 10.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (8)
1. A method for building an underground concealed water reservoir is characterized in that: the method uses a high-pressure jet grouting system, wherein the high-pressure jet grouting system comprises a water pumping system, a grouting system, a slurry pumping system and a sealed excavation system;
the water pumping and grouting system comprises a grouting pump and a water pump, the grouting pump is connected with a grouting pipe, and the water pump is connected with a water pumping pipe;
the slurry pumping system comprises a slurry pumping pump, and the slurry pumping pump is connected with a slurry pumping pipe;
the sealed excavation system comprises a hydraulic jet drilling machine, wherein the top of the hydraulic jet drilling machine is provided with a plurality of guide pipes, and the guide pipes are injected with water, gas and cement mortar to be pressurized and then are jetted through a hydraulic jet drilling machine head;
the method comprises the following steps:
step 1: according to the field situation, selecting a proper position outside the design width range of the reservoir to drill a water pumping hole and a slurry pumping hole through a drilling machine, distributing the water pumping hole along the direction of underground water flow, and distributing the slurry pumping hole along the direction of the underground water flow;
step 2: after the water pumping hole is drilled, the drilling machine is removed, a grouting pipe and a water pumping pipe are placed downwards in the hole, the water pumping pipe and the grouting pipe are arranged along the direction of underground water flow, the water pumping pipe is connected with a water pumping pump and pumps water outwards, and meanwhile concrete containing a thickening agent and an accelerating agent is poured into the grouting pipe to block a water-bearing stratum; after the drilling of the slurry pumping hole is finished, the drilling machine is removed, the slurry pumping pipe is placed in the slurry pumping hole, and the slurry pumping pump is connected with the slurry pumping pipe;
completing the sealing work of the aquifer before excavating the reservoir through Step 1-Step 2, and providing a power source for subsequent excavation work;
step 3: moving the hydraulic jet drilling machine to the excavation position of the reservoir and installing the hydraulic jet drilling machine in place, and connecting the water suction pump with a conduit of the hydraulic jet drilling machine;
step 4: after the connection is finished, the hydraulic jet drilling machine starts to drill, when the hydraulic jet drilling machine drills to the position of the top plate of the lower water-resisting layer, the switch is controlled to stop drilling the casing of the hydraulic jet drilling machine, and a drill bit connected with the jet device continuously drills to the designed bottom depth of the reservoir;
step 5: opening a booster motor and a water pump to enable the jet flow of the jet device to jet and cut the soil body, slowly lifting the jet device in the cutting process until the top plate of the lower water-resisting layer is cut through and communicated with the aquifer, and finally forming a cylindrical cavity which is formed at the lower part of the aquifer and is communicated with the aquifer;
step 6: when the jet device performs jet cutting, a slurry pump is opened, slurry formed by mixing the cut soil body and jet water is pumped out for cavity cleaning treatment;
and (5) finishing excavation of the reservoir cavity.
2. The method of constructing a concealed underground water reservoir according to claim 1, wherein: in Step1, according to the area of the actual excavation reservoir, decomposing the reservoir into a plurality of circles with the same area, wherein the center of each circle is positioned on three vertexes of an equilateral triangle, so that the superposed areas of the three circles are equal, and the three circles are intersected at one point;
step 7: and repeating Step 3-Step 6 for each circle, and connecting the excavated circles to form a complete reservoir cavity.
3. The method of constructing a concealed underground water reservoir according to claim 1, wherein: further comprising the steps of:
step 8: after excavation of the reservoir cavity is completed: closing the water supply of the injection device, connecting a gas guide pipe, introducing high-temperature gas into the reservoir cavity, drying the inner wall of the reservoir cavity, and discharging the gas through a gap cavity between the sleeve and the inner pipe;
step 9: closing a gas guide pipe of the drilling machine, communicating a cement mortar guide pipe, opening a pressurizing motor, injecting cement mortar into the hydraulic jet drilling machine, and spraying the cement mortar on the inner wall of the water storage tank cavity for seepage-proofing treatment by adjusting the power of the pressurizing motor and the position of a spray head;
step 10: after cement mortar on the inner wall of the cavity of the reservoir is coagulated and hardened, all devices and equipment are removed, the hydraulic jet drilling machine is installed to the water pumping hole in Step1 again and extends into the aquifer, concrete used for blocking the aquifer before is cut through by high-pressure jet, underground water flows into the reservoir, and finally the water storage work of the underground reservoir is completed.
4. A method of constructing a concealed underground water reservoir according to claim 1 in which: the pumping system, the grouting system, the sealed excavation system and the slurry pumping system are sequentially arranged along the flow direction of underground water.
5. A method of constructing a concealed underground water reservoir according to claim 1 in which: the hydraulic jet drilling machine comprises an inner pipe and a sleeve sleeved outside the inner pipe, wherein a jet device is arranged at the bottom of the inner pipe and connected with a drill bit.
6. A method of constructing a concealed underground water reservoir according to claim 3 in which: a clearance cavity is formed between the sleeve and the inner pipe, and high-temperature gas can be led out of the hydraulic jet drilling machine through the clearance cavity.
7. A method of constructing a concealed underground water reservoir according to claim 3 in which: the inner tube on be equipped with the booster motor, the booster motor has the pressure regulating knob switch, accessible knob switch control injection apparatus jet pressure intensity size.
8. A method of constructing a concealed underground water reservoir according to claim 3 in which: the water suction pump is connected with at least one conduit on the top of the hydraulic jet drilling machine.
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| CN204960866U (en) * | 2015-08-25 | 2016-01-13 | 中国石油化工股份有限公司 | Multi -functional well head sealing device |
| CN106930724B (en) * | 2017-04-17 | 2019-03-15 | 山东科技大学 | One kind being rich in water borehole sealing and gas drainage integral method |
| CN107605420B (en) * | 2017-09-13 | 2019-12-20 | 中国石油天然气股份有限公司 | Online cleaning system for operating well rod pipe |
| CN107558950A (en) * | 2017-09-13 | 2018-01-09 | 吉林大学 | Orientation blocking method for the closing of oil shale underground in situ production zone |
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