CN113356849B - Device for controlling stope roadway retention based on hydraulic fracturing pressure relief - Google Patents
Device for controlling stope roadway retention based on hydraulic fracturing pressure relief Download PDFInfo
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- CN113356849B CN113356849B CN202110800012.2A CN202110800012A CN113356849B CN 113356849 B CN113356849 B CN 113356849B CN 202110800012 A CN202110800012 A CN 202110800012A CN 113356849 B CN113356849 B CN 113356849B
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- fracturing
- pressure
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- sealing cylinder
- drilling
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- 230000014759 maintenance of location Effects 0.000 title claims abstract description 11
- 238000012856 packing Methods 0.000 claims abstract description 48
- 238000005553 drilling Methods 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000003245 coal Substances 0.000 claims abstract description 14
- 239000011435 rock Substances 0.000 claims abstract description 9
- 241000935974 Paralichthys dentatus Species 0.000 claims description 28
- 230000000712 assembly Effects 0.000 claims description 26
- 238000000429 assembly Methods 0.000 claims description 26
- 210000000078 claw Anatomy 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims 5
- 238000010030 laminating Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 241000242541 Trematoda Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/12—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic fracturing pressure relief-based device for controlling a stope roadway entry, which relates to the technical field of coal mine entry retention and comprises a high-pressure pump, a fracturing pipe, a packing assembly and drilling holes, wherein a plurality of the drilling holes are obliquely formed in a coal seam and a rock stratum through drill bits, the drilling holes are distributed along the length direction of the stope roadway, a plurality of fracturing grooves are formed in the drilling holes at equal intervals, a plurality of the packing assembly is arranged in the drilling holes at equal intervals, the packing assembly and the fracturing grooves are arranged at intervals, the fracturing pipe is coaxially sleeved in the packing assembly, plugs are sleeved at two ends of the fracturing pipe, the plugs are positioned in the drilling holes, one end of each fracturing pipe extends out of the drilling hole and is connected with the high-pressure pump, and the high-pressure pump is arranged in the stope roadway. The hydraulic fracturing pressure relief device can provide a sealing environment for hydraulic fracturing pressure relief through the packing assembly, and effectively prevents water pressure leakage.
Description
Technical Field
The invention relates to the technical field of coal mine entry retaining, in particular to a hydraulic fracturing pressure relief based device for controlling entry retaining of a stope.
Background
Coal mines are generally divided into underground coal mines and open pit coal mines, when a coal seam is far away from the ground surface, coal is generally selected to be excavated into underground excavation roadways, the underground coal mines are required to be excavated into stoppages when the underground coal mines, the stoppages are convenient to mine, in order to enable the stoppages to be more stable, blasting pressure relief and hydraulic fracturing pressure relief are generally adopted to reduce the stress to which the stoppages are subjected, and therefore the safety of the stoppages is improved.
The existing hydraulic fracturing pressure relief can not accurately distribute the fracturing interval at equal intervals when fracturing is carried out, so that the fracturing of rock stratum is uneven, the stress born by a stoping roadway can not be effectively reduced, the pressure of a packer on the inner wall of a drill hole can not be regulated when the fracturing interval is partitioned through the packer, the drill hole is damaged, and the service life of the packer is prolonged.
Aiming at the problems, the invention provides a hydraulic fracturing pressure relief based device for controlling the stope of a stope roadway so as to solve the problems.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: the device for controlling the entry retaining of the stoping roadway based on hydraulic fracturing pressure relief comprises a high-pressure pump, a fracturing pipe, a packing assembly and a plurality of drilled holes, wherein the drilled holes are obliquely formed in a coal bed and a rock stratum through drill bits, and the drilled holes are distributed along the length direction of the stoping roadway;
a plurality of fracturing grooves are formed in the drill holes at equal intervals, a plurality of packing assemblies are also arranged in the drill holes at equal intervals, and the packing assemblies are arranged at intervals with the fracturing grooves;
the packing assembly is characterized in that a plurality of packing assemblies are coaxially sleeved with a fracturing pipe, plugs are sleeved at two ends of the fracturing pipe, the plugs are located in the drilling holes, one ends of the fracturing pipe extend out of the drilling holes and are connected with a high-pressure pump, and the high-pressure pump is arranged in a stoping roadway.
Further, preferably, a positioning groove is formed between the plurality of fracturing grooves, the depth of the positioning groove is smaller than that of the fracturing grooves, and the plurality of packing components correspond to the positioning grooves.
Further, preferably, a plurality of fracturing openings are formed in the fracturing pipe at equal intervals, the fracturing openings correspond to the fracturing grooves, and a filter screen is fixed to the fracturing openings and used for preventing rocks from entering the fracturing pipe.
Further, preferably, the packing assembly comprises a sealing cylinder, a rubber piece, a limiting assembly and a rubber pipe, wherein the sealing cylinder is sleeved on the fracturing pipe, a plurality of limiting assemblies are circumferentially arranged at two ends of the sealing cylinder, the rubber piece is fixed between the limiting assemblies, and a sealed pressure bin is formed among the rubber piece, the sealing cylinder and the limiting assemblies;
and a rubber tube is arranged in one side of the sealing cylinder in a penetrating manner, a plurality of limiting assemblies are avoided by the rubber tube, and one end, close to the high-pressure pump, of the rubber tube is connected with a pressure control device.
Further, preferably, the rubber tube is provided with a plurality of pressure holes, and the plurality of pressure holes are all located in the pressure bin and are used for providing pressure for the pressure bin, so that the rubber piece is deformed.
Further, preferably, a plurality of positioning columns are circumferentially distributed at the middle position of the outer wall of the rubber member, a plurality of positioning columns are of trapezoid structures, and a plurality of positioning columns can position the packing assembly through positioning grooves.
Further, preferably, the limiting component comprises a limiting piece, a pressure spring, a limiting plate, a side wall and a fluke component, wherein the limiting piece is slidably arranged in one side of the sealing cylinder close to the fracturing pipe, and the pressure spring is arranged between the limiting piece and the sealing cylinder;
the sealing cylinder is far away from the circumference of one side of fracturing pipe and is provided with a plurality of lateral walls, a plurality of limiting plates are slidably arranged in the lateral walls through sliding columns, one side, close to the limiting piece, of the limiting plates is connected with the limiting piece through a connecting piece, and a plurality of anchor jaw assemblies are slidably arranged in the top ends of the lateral walls.
Further, preferably, a contact sensor is coaxially arranged in the middle of the pressure spring, and the contact sensor is fixed on the sealing cylinder.
Further, preferably, the fluke assembly comprises a fluke and a tension spring, wherein the fluke is slidably arranged in the side wall, and a plurality of tension springs are arranged between the fluke and the side wall and used for resetting the fluke.
Further, preferably, a guiding surface is arranged on one side of the fluke, which is close to the limiting plate, and the fluke can push the guiding surface through the sliding of the limiting plate, so that the fluke can slide upwards, the top end of the fluke is an arc-shaped surface, the fluke can be attached to the inner wall of a drilled hole, and a plurality of anti-slip concave tables are fixed on the arc-shaped surface.
Compared with the prior art, the invention provides a hydraulic fracturing pressure relief based device for controlling the stope roadway retention, which has the following beneficial effects:
according to the invention, the positioning grooves are arranged between the fracturing grooves in the drill holes, so that the positions of the packing components can be accurately positioned, the lengths of the fracturing grooves are the same, the pressures born by the fracturing grooves are the same, the fracturing effect is improved, the pressure of the fracturing components can be relieved better, the positioning columns are arranged on the rubber parts of the packing components, the packing components can be positioned, the pressure is injected into the pressure bins through the rubber pipes, the rubber parts can be deformed, the rubber parts are in contact with the drill holes, the packing components are sealed and primarily fixed, the fracturing grooves are fractured through fracturing liquid in the fracturing pipes, the pressure limiting piece slides through the fracturing liquid, the limiting plate slides towards the drill holes, the packing components are further fixed through the anchor claws, and when the pressure of the fracturing liquid is higher, the anchor claws change along with the change of the pressure of the fracturing liquid, the packing components are improved, when the pressure limiting piece contacts with the contact sensor, the fracturing liquid pressure in the pressure maintaining sensor reaches the packing components, and the packing components are prevented from being damaged due to the fact that the pressure value of the packing components is higher when the pressure is kept in contact with the pressure sensor.
Drawings
FIG. 1 is an overall schematic diagram of an apparatus for controlling a stope retention based on hydraulic fracturing pressure relief;
FIG. 2 is an enlarged schematic view of position A of a device for controlling a stope entry based on hydraulic fracturing pressure relief;
FIG. 3 is a schematic diagram of a packing assembly of an apparatus for controlling a stope retention based on hydraulic fracturing pressure relief;
FIG. 4 is a schematic diagram of a spacing assembly of an apparatus for controlling a stope based on hydraulic fracturing pressure relief;
in the figure: 1. stoping the roadway; 2. a high pressure pump; 3. a fracturing pipe; 31. pressing the split; 4. a coal seam; 5. a rock formation; 51. a positioning groove; 52. a fracturing tank; 6. a packing assembly; 61. sealing the column body; 62. a rubber member; 63. positioning columns; 64. a pressure bin; 65. a limit component; 651. a pressure limiting piece; 652. a pressure spring; 653. a contact sensor; 654. a connecting piece; 655. a limiting plate; 656. flukes; 6561. a guide surface; 6562. an anti-slip boss; 657. a tension spring; 658. a sidewall; 659. a spool; 66. a rubber tube; 7. drilling.
Detailed Description
Referring to fig. 1 to 4, the present invention provides a technical solution: the device for controlling the entry retaining of the stoping roadway based on hydraulic fracturing pressure relief comprises a high-pressure pump 2, a fracturing pipe 3, a packing assembly 6 and drilling holes 7, wherein a plurality of the drilling holes 7 are obliquely formed in a coal bed 4 and a rock stratum 5 through drill bits, and the drilling holes 7 are distributed along the length direction of the stoping roadway 1;
a plurality of fracturing grooves 52 are formed in the plurality of drilling holes 7 at equal intervals, a plurality of packing assemblies 6 are also arranged in the drilling holes 7 at equal intervals, and the plurality of packing assemblies 6 are arranged at intervals with the plurality of fracturing grooves 52;
the fracturing pipes 3 are coaxially sleeved in the packing assemblies 6, plugs are sleeved at the two ends of the fracturing pipes 3, the plugs are located in the drilling holes 7, one ends of the fracturing pipes 3 extend out of the drilling holes 7 and are connected with the high-pressure pumps 2, and the high-pressure pumps 2 are arranged in the stoping roadway 1.
In this embodiment, a positioning groove 51 is formed between the plurality of fracturing grooves 52, and the depth of the positioning groove 51 is smaller than that of the fracturing grooves 52, and the plurality of packing assemblies 6 correspond to the positioning groove 51, that is, the packing assemblies 6 can be precisely positioned by the positioning groove 51, so that the length between each fracturing groove 52 is ensured to be the same, the pressure born by each fracturing groove 52 is the same, and the pressure relief effect is improved.
In this embodiment, the fracturing pipe 3 is provided with a plurality of fracturing ports 31 at equal intervals, and the fracturing ports 31 correspond to the fracturing grooves 52, and a filter screen is fixed on the fracturing ports 31 to prevent rock from entering the fracturing pipe 3, that is, when the fracturing liquid is discharged from the fracturing ports 31, the entry of the rock can be limited by the filter screen, so that the fracturing pipe 3 is prevented from being blocked.
As a preferred embodiment, the packing assembly 6 includes a sealing cylinder 61, a rubber member 62, a limiting assembly 65 and a rubber tube 66, wherein the sealing cylinder 61 is sleeved on the fracturing pipe 3, a plurality of limiting assemblies 65 are circumferentially arranged at two ends of the sealing cylinder 61, the rubber member 62 is fixed between the limiting assemblies 65, and a sealed pressure bin 64 is formed among the rubber member 62, the sealing cylinder 61 and the limiting assemblies 65;
a rubber tube 66 is arranged in one side of the sealing cylinder 61 in a penetrating manner, the rubber tube 66 is arranged avoiding a plurality of limiting assemblies 65, and one end, close to the high-pressure pump 2, of the rubber tube 66 is connected with a pressure control device.
As a preferred embodiment, the rubber tube 66 is provided with a plurality of pressure holes, and the pressure holes are all located in the pressure chamber 64 and are used for providing pressure for the pressure chamber 64, so that the rubber member 62 is deformed, and it should be noted that the pressure inside the rubber tube 66 is gradually increased along with the injection of the fracturing fluid, so that the rubber member 62 is always attached to the drilled hole 7, and the sealing effect is improved.
As a preferred embodiment, the middle position of the outer wall of the rubber member 62 is circumferentially provided with a plurality of positioning columns 63, and a plurality of positioning columns 63 are of a trapezoid structure, and the positioning columns 63 can position the packing assembly 6 through the positioning slots 51, that is, the positioning columns 63 of the trapezoid can slightly guide the packing assembly 6, so that the position of the packing assembly 6 can be more accurate.
As a preferred embodiment, the limiting assembly 65 includes a limiting member 651, a pressure spring 652, a limiting plate 655, a side wall 658, and a fluke assembly, wherein the limiting member 651 is slidably disposed inside a side of the sealing cylinder 61 near the fracturing pipe 3, and the pressure spring 652 is disposed between the limiting member 651 and the sealing cylinder 61;
the sealing cylinder 61 is kept away from the circumference of one side of fracturing pipe 3 and is provided with a plurality of lateral walls 658, a plurality of the lateral walls 658 are internally provided with limiting plates 655 in a sliding manner through sliding columns 659, one side of each limiting plate 655, which is close to each limiting member 651, is connected with each limiting member 651 through a connecting member 654, and a plurality of anchor jaw assemblies are arranged inside the top ends of the lateral walls 658 in a sliding manner.
As a preferred embodiment, the pressure spring 652 is coaxially provided with a contact sensor 653 at the middle position, and the contact sensor 653 is fixed on the sealing cylinder 61, and it should be noted that when the pressure limiter 651 contacts the contact sensor 653, the pressure of the fracturing fluid in the borehole 7 reaches a threshold value at this time, and enters the pressure maintaining stage, so as to prevent the packing assembly 6 from being damaged.
As a preferred embodiment, the fluke assembly includes fluke 656 and extension springs 657, wherein fluke 656 is slidably disposed within side wall 658, and a plurality of extension springs 657 are disposed between fluke 656 and side wall 658 for resetting fluke 656.
As a preferred embodiment, a guiding surface 6561 is provided on a side of the fluke 656 near the limiting plate 655, the fluke 656 can push the guiding surface 6561 by sliding the limiting plate 655, so that the fluke 656 slides upwards, the top end of the fluke 656 is an arc surface, which can be attached to the inner wall of the borehole, and a plurality of anti-slip concave tables 6562 are fixed on the arc surface.
Specifically, set up constant head tank 51 through the drill bit between the fracturing tank 52 in drilling 7, thereby can be accurate to fixing a position of packing assembly 6, thereby guaranteed that the length between every fracturing tank 52 is the same, thereby make fracturing tank 52 atress the same, send into drilling 7 in proper order with fracturing pipe 3 and a plurality of packing assembly 6, and fix a packing assembly 6 through the reference column 63 that sets up on the rubber member 62 of packing assembly 6, rethread rubber tube 66 pours into pressure in pressure storehouse 64, make rubber member 62 take place deformation, thereby make it contact with drilling 7, seal and preliminary fixed, rethread high-pressure pump 2 pours into fracturing liquid into fracturing pipe 3 through fracturing port 31 and flows into between packing assembly 6, and fracture tank 52, during the fracturing, the pressure limiter 651 slides through fracturing liquid, thereby drive limiting plate 655 makes the anchor claw slide to drilling 7, carry out further fixation to packing assembly 6, and when the pressure of fracturing liquid is big, the anchor claw is big to the pressure of 7 is big, thereby the pressure of the anchor claw is big pressure that is big to the pressure storehouse is followed, the pressure of packing assembly 6 is changed, thereby the pressure of pressure sensor valve is got into after the pressure sensor 31 has been accomplished, the pressure sensor is broken and the pressure of the pressure sensor is changed, the pressure sensor is accomplished, the pressure protector is changed, the pressure is changed and is broken and has reached, the pressure seal 6 has been broken and has been opened pressure to pressure 6 and is opened.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a device based on hydraulic fracturing release control stope drift, includes high-pressure pump (2), fracturing pipe (3), seals and separates subassembly (6) and drilling (7), wherein, a plurality of drilling (7) are seted up in coal seam (4) and stratum (5) through the drill bit slope, and, a plurality of drilling (7) are along the length direction distribution of stope drift (1), its characterized in that:
a plurality of fracturing grooves (52) are formed in the plurality of drilling holes (7) at equal intervals, a plurality of packing assemblies (6) are also arranged in the drilling holes (7) at equal intervals, and the plurality of packing assemblies (6) are arranged at intervals with the plurality of fracturing grooves (52);
the fracturing pipes (3) are coaxially sleeved in the packing assemblies (6), plugs are sleeved at two ends of each fracturing pipe (3), the plugs are located in the drilling holes (7), one ends of the fracturing pipes (3) extend out of the drilling holes (7) and are connected with the high-pressure pumps (2), and the high-pressure pumps (2) are arranged in the stoping roadway (1);
a positioning groove (51) is formed among the plurality of fracturing grooves (52), the depth of the positioning groove (51) is smaller than that of the fracturing grooves (52), and the plurality of packing components (6) correspond to the positioning groove (51);
the packing assembly (6) comprises a sealing cylinder (61), rubber pieces (62), limiting assemblies (65) and a rubber pipe (66), wherein the sealing cylinder (61) is sleeved on a fracturing pipe (3), a plurality of limiting assemblies (65) are circumferentially distributed at two ends of the sealing cylinder (61), the rubber pieces (62) are fixed between the limiting assemblies (65), and a sealed pressure bin (64) is formed among the rubber pieces (62), the sealing cylinder (61) and the limiting assemblies (65);
a rubber tube (66) is arranged in the pressure bin (64) at one side of the sealing cylinder (61) in a penetrating manner, the rubber tube (66) is arranged avoiding a plurality of limiting assemblies (65), and one end, close to the high-pressure pump (2), of the rubber tube (66) is connected with a pressure control device;
the limiting assembly (65) comprises a limiting piece (651), a pressure spring (652), a limiting plate (655), a side wall (658) and a fluke assembly, wherein the limiting piece (651) is slidably arranged inside one side of the sealing cylinder (61) close to the fracturing pipe (3), and the pressure spring (652) is arranged between the limiting piece (651) and the sealing cylinder (61);
a plurality of side walls (658) are circumferentially distributed on one side, far away from the fracturing pipe (3), of the sealing cylinder (61), limiting plates (655) are slidably arranged in the side walls (658) through sliding columns (659), one side, close to the limiting piece (651), of each limiting plate (655) is connected with the limiting piece (651) through a connecting piece (654), and fluke components are slidably arranged in the top ends of the side walls (658);
the fluke assembly comprises a fluke (656) and a tension spring (657), wherein the fluke (656) is slidably arranged in a side wall (658), and a plurality of tension springs (657) are arranged between the fluke (656) and the side wall (658) and used for resetting the fluke (656).
2. The device for controlling the retention of a mining roadway based on hydraulic fracturing pressure relief according to claim 1, wherein the device comprises: a plurality of fracturing openings (31) are formed in the fracturing pipe (3) at equal intervals, the fracturing openings (31) correspond to the fracturing grooves (52), and a plurality of filter screens are fixed on the fracturing openings (31) and used for preventing rocks from entering the fracturing pipe (3).
3. The device for controlling the retention of a mining roadway based on hydraulic fracturing pressure relief according to claim 1, wherein the device comprises: the rubber tube (66) is provided with a plurality of pressure holes, and the pressure holes are all positioned in the pressure bin (64) and used for providing pressure for the pressure bin (64) so as to deform the rubber piece (62).
4. The device for controlling the retention of a mining roadway based on hydraulic fracturing pressure relief according to claim 1, wherein the device comprises: a plurality of positioning columns (63) are circumferentially distributed at the middle position of the outer wall of the rubber piece (62), the positioning columns (63) are of trapezoid structures, and the positioning columns (63) can position the packing assembly (6) through positioning grooves (51).
5. The device for controlling the retention of a mining roadway based on hydraulic fracturing pressure relief according to claim 1, wherein the device comprises: a contact sensor (653) is coaxially arranged in the middle of the pressure spring (652), and the contact sensor (653) is fixed on the sealing cylinder (61).
6. The device for controlling the retention of a mining roadway based on hydraulic fracturing pressure relief according to claim 1, wherein the device comprises: the utility model discloses a drilling device, including anchor claw (656), locating plate (655), guide surface (6561) are equipped with to one side that is close to anchor claw (656), anchor claw (656) can promote guide surface (6561) through the slip of locating plate (655) to make anchor claw (656) upwards slide, and, the top of anchor claw (656) is the arcwall face, can make its laminating drilling inner wall, and be fixed with a plurality of anti-skidding concave stations (6562) on the arcwall face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110800012.2A CN113356849B (en) | 2021-07-15 | 2021-07-15 | Device for controlling stope roadway retention based on hydraulic fracturing pressure relief |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110800012.2A CN113356849B (en) | 2021-07-15 | 2021-07-15 | Device for controlling stope roadway retention based on hydraulic fracturing pressure relief |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113356849A CN113356849A (en) | 2021-09-07 |
| CN113356849B true CN113356849B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110800012.2A Active CN113356849B (en) | 2021-07-15 | 2021-07-15 | Device for controlling stope roadway retention based on hydraulic fracturing pressure relief |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1835299A (en) * | 1998-03-02 | 1999-10-07 | Commonwealth Scientific And Industrial Research Organisation | Hydraulic fracturing of ore bodies |
| CN102852522A (en) * | 2012-04-01 | 2013-01-02 | 天地科技股份有限公司 | Hydraulic fracturing method and device for releasing pressure of coal mine tunnel |
| CN205047207U (en) * | 2015-10-08 | 2016-02-24 | 河南理工大学 | Colliery binary channels segmentation in pit hydraulic fracturing device |
| CN205778794U (en) * | 2016-05-20 | 2016-12-07 | 中石化石油工程技术服务有限公司 | The latus rectum segmented fracturing devices such as one |
| CN106368701A (en) * | 2016-09-27 | 2017-02-01 | 吴拥政 | Method and device for controlling mining roadway entry retaining by means of hydrofracture pressure relief |
| CN110985109A (en) * | 2019-12-17 | 2020-04-10 | 陕西煤业化工技术研究院有限责任公司 | High-pressure water injection fracturing system and operation method |
-
2021
- 2021-07-15 CN CN202110800012.2A patent/CN113356849B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1835299A (en) * | 1998-03-02 | 1999-10-07 | Commonwealth Scientific And Industrial Research Organisation | Hydraulic fracturing of ore bodies |
| CN102852522A (en) * | 2012-04-01 | 2013-01-02 | 天地科技股份有限公司 | Hydraulic fracturing method and device for releasing pressure of coal mine tunnel |
| CN205047207U (en) * | 2015-10-08 | 2016-02-24 | 河南理工大学 | Colliery binary channels segmentation in pit hydraulic fracturing device |
| CN205778794U (en) * | 2016-05-20 | 2016-12-07 | 中石化石油工程技术服务有限公司 | The latus rectum segmented fracturing devices such as one |
| CN106368701A (en) * | 2016-09-27 | 2017-02-01 | 吴拥政 | Method and device for controlling mining roadway entry retaining by means of hydrofracture pressure relief |
| CN110985109A (en) * | 2019-12-17 | 2020-04-10 | 陕西煤业化工技术研究院有限责任公司 | High-pressure water injection fracturing system and operation method |
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| CN113356849A (en) | 2021-09-07 |
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