CN215169870U - A water installation is prevented gushing in drill way for horizontal directional drilling engineering geological survey - Google Patents
A water installation is prevented gushing in drill way for horizontal directional drilling engineering geological survey Download PDFInfo
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- CN215169870U CN215169870U CN202121171573.2U CN202121171573U CN215169870U CN 215169870 U CN215169870 U CN 215169870U CN 202121171573 U CN202121171573 U CN 202121171573U CN 215169870 U CN215169870 U CN 215169870U
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Abstract
The utility model discloses a water installation is prevented gushing in drill way that is used for horizontal directional drilling engineering geology reconnaissance, include: the water stopping device is connected to one end, which does not enter the orifice, of the sleeve and is used for blocking a large amount of water gushing when the drill rod drills into the aquifer; the pressure testing device is sleeved at the end part of the orifice, which does not enter the sleeve, and is connected with the water stopping device, and one end of the pressure testing device, which deviates from the water stopping device, is fixed at the orifice and is used for detecting the water surging pressure in the sleeve. The utility model discloses simple structure, when gushing water takes place for drilling, can seal the orifice, and then promote the pressure of mud circulation in the drilling, water pressure in the balanced stratum to reach the purpose of stagnant water. The utility model is suitable for a go on smoothly of engineering geological investigation can be ensured to horizontal directional drilling in a large number of gushes water, gush the more condition of water spot.
Description
Technical Field
The utility model relates to a drilling rod drilling technical field. More specifically, the utility model relates to a water installation is prevented gushing in drill way that is used for horizontal directional drilling engineering geological investigation.
Background
With the acceleration of infrastructure construction in China, the demand for constructing railways and highways in mountainous areas with high altitude and large burial depth is increasing. The geological condition along the line of the tunnel design can not be truly and comprehensively reflected by the traditional vertical drilling geological survey, and the survey efficiency is low, the cost is high and the construction difficulty is large. Aiming at the situation, a method for carrying out tunnel engineering geological exploration by adopting a horizontal directional drilling technology is developed.
The geological survey of the horizontal directional drilling engineering is to change a vertical hole into a horizontal drilling hole along the axis of a tunnel, so that the geological condition along the tunnel can be effectively reflected in the geological survey of the ultra-long-distance large buried depth tunnel, and the equipment can be arranged at the entrance and exit of the tunnel, thereby avoiding the equipment from being moved under the complex terrain and having remarkable technical and economic advantages.
The horizontal directional drilling technology is adopted to carry out geological survey of the ultra-long distance large buried depth tunnel under the condition of a high altitude mountain area, and due to the complex internal condition of a mountain, a stratum rich in water is probably drilled in the drilling process along the design axis of the tunnel. When a large amount of water gushes from the stratum, in order to reduce loss, reduce the influence on the environment and ensure the continuation of engineering construction, a water gushing prevention device is required to be installed at the drilling hole to stop water.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
It is yet another object of the present invention to provide an orifice water burst prevention device for horizontal directional drilling engineering geological exploration. This device simple structure, when the drilling takes place to gush water, can seal the orifice, and then promote the pressure of mud circulation in the drilling, the water pressure in the balanced stratum to reach the mesh of stagnant water. The device is suitable for the conditions of water gushing in the stratum and more water gushing points, and can ensure the smooth progress of the geological investigation of the horizontal directional drilling engineering.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an orifice water inrush prevention device for horizontal directional drilling engineering geological exploration, comprising:
the water stopping device is connected to one end, which does not enter the orifice, of the sleeve and is used for blocking a large amount of water gushing when the drill rod drills into the aquifer;
the pressure testing device is sleeved at the end part of the orifice, which does not enter the sleeve, and is connected with the water stopping device, and one end of the pressure testing device, which deviates from the water stopping device, is fixed at the orifice and is used for detecting the water surging pressure in the sleeve.
Preferably, the water stopping device comprises a shell, a supporting pipe, a hydraulic switch, a hydraulic conveying pipe, a plurality of pistons and a plurality of sealing rubber cores, wherein the shell is sleeved with a connecting pipe which is internally provided with a cavity and is formed on the supporting pipe, the plurality of sealing rubber cores are arranged in the supporting pipe at intervals, the hydraulic switch is arranged in the cavity of the connecting pipe with the hydraulic conveying pipe, and one end of each piston is connected with the hydraulic conveying pipe and the other end of the hydraulic conveying pipe.
Preferably, a sealing ring is arranged at the joint of the water stopping device and the pressure testing device.
Preferably, the pressure testing device comprises a flange steel cylinder, a pressure measuring pipe, a pressure gauge, a stop valve, a parallel valve, a slag discharge pipe and a pressure control valve, wherein the flange steel cylinder is sleeved at the end part of the orifice which is not entered into the sleeve, the pressure measuring pipe penetrates through the flange steel cylinder and the sleeve, the parallel valve, the pressure gauge and the stop valve are arranged on the pressure measuring pipe, the slag discharge pipe penetrates through the flange steel cylinder and the sleeve, and the slag discharge pipe is provided with the pressure control valve.
Preferably, the distance from the slag discharge pipe to the orifice is smaller than the distance from the piezometric pipe to the orifice.
Preferably, the flange steel cylinder is fixed on the sleeve by a plurality of fastening bolts.
Preferably, one end of the pressure testing device, which is far away from the water stopping device, is fixed at the opening by adopting a telescopic supporting rod.
The utility model discloses at least, include following beneficial effect:
when water gushes in the drill hole, the hole opening can be sealed, and the water pressure in the stratum is balanced by improving the pressure of mud circulation in the drill hole, so that the aim of stopping water is fulfilled;
the device is suitable for the conditions of water gushing in the stratum and more water gushing points, and can ensure the smooth progress of the geological investigation of the horizontal directional drilling engineering.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is the utility model relates to a water installation is prevented gushing in drill way's overall structure schematic diagram for horizontal directional drilling engineering geological survey.
Reference numerals: drill rod 1, sealing rubber core 2, hydraulic delivery pipe 3, hydraulic switch 4, support pipe 5, piston 6, sealing ring 7, flange steel cylinder 8, pressure gauge 9, stop valve 10, parallel valve 11, slag discharge pipe 12, pressure control valve 13, telescopic supporting rod 14, shell 15, pressure measuring pipe 16 and sleeve 17
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It should be noted that, in the description of the present invention, the terms "horizontal", "one end", "deviation", "inside", "other end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The utility model provides a concrete embodiment of a water installation is prevented gushing in drill way mouth for horizontal directional drilling engineering geological survey, as shown in figure 1, include:
the water stopping device is connected to the tail end of the sleeve 17 and used for stopping water gushing from the stratum when the drill rod 1 drills into the aquifer; and the sleeve 17 extends into the orifice for horizontally directional drilling, when the sleeve 17 is horizontally directional drilled, a short section of the tail end of the sleeve 17 is not drilled into the orifice, and when the drill rod 1 is horizontally drilled, the drill rod 1 drills in the sleeve 17.
The water stopping device comprises a shell 15, a supporting pipe 5, a hydraulic switch 4, a hydraulic conveying pipe 3, a plurality of pistons 6 and a plurality of sealing rubber cores 2, the shell 15 is sleeved on the supporting pipe 5 to form a connecting pipe with a cavity inside, the sealing rubber cores 2 are arranged in the supporting pipe 5 at intervals from top to bottom, the hydraulic switch 4 and the hydraulic conveying pipe 3 are arranged in the cavity of the connecting pipe, one end of each piston 6 is connected with the hydraulic conveying pipe 3 and the other end of each piston is connected with the sealing rubber core 2.
The sealing rubber core 2 is made of elastic rubber, the diameter variation of the joint part of the drill rod 1 and the drill rod 1 is met within the diameter variation allowable range, tight sealing can be formed at any part of the drill rod 1 during plugging, and the sealing rubber core can be quickly restored after plugging is finished; the upper end and the lower end of the sealing rubber core 2 on the inner side are inclined inwards in appearance, so that the drill rod 1 can drill slowly when being plugged, and is easy to replace when being seriously abraded.
The pressure test device is sleeved at the tail end of the sleeve 17 and connected with the water stopping device, and one end of the pressure test device, which deviates from the water stopping device, is fixed at the hole opening and used for detecting the water surging pressure in the sleeve 17.
And a sealing ring 7 is arranged between the water stopping device and the pressure testing device.
The pressure testing device comprises a flange steel cylinder 8, a pressure measuring pipe 16, a pressure gauge 9, a stop valve 10, a parallel valve 11, a slag discharge pipe 12 and a pressure control valve 13, wherein the flange steel cylinder 8 is sleeved at the tail end of a sleeve 17, the pressure measuring pipe 16 penetrates through the flange steel cylinder 8 and the sleeve 17, the parallel valve 11, the pressure gauge 9 and the stop valve 10 are arranged on the pressure measuring pipe 16, and the pressure control valve 13 is arranged on the slag discharge pipe 12.
The parallel valve 11 can be matched with the opening and closing of the water stopping device to realize 'soft processing', and reduce pressure shock excitation.
The distance between the slag discharge pipe 12 and the orifice is smaller than the distance between the pressure measuring pipe 16 and the orifice. When the water inflow in the hole is increased, the mud pressure in the drilling hole can be adjusted, the formation water pressure is balanced, and the purpose of water stopping is achieved. The opening of the slag discharge pipe 12 is large, and the normal discharge of slurry returning in the hole and rock debris in the hole under the normal state can be met.
The flange steel cylinder 8 is fixed on the sleeve 17 by adopting a plurality of fastening bolts. Sealing washers are padded at the connecting part and the opening for installing the fastening bolt, so that leakage of slurry caused by overlarge pressure is reduced.
One end of the pressure testing device, which deviates from the water stopping device, is fixed at the opening by adopting a telescopic supporting rod 14. The telescopic supporting rods 14 are firmly fixed with the ground, 4 telescopic supporting rods 14 are arranged on the flange steel cylinder 8, and the stability and the safety of the whole water burst prevention device can be improved.
The working principle of the orifice water burst prevention device is as follows: the orifice water burst prevention device is firstly firmly connected with the sleeve 17 and the ground, the parallel valve 11 at the mud pressure testing device in the hole is in a closed state, and the pressure control valve 13 connected with the slag discharge pipe 12 is in an open state, so that the mud in the hole can be discharged normally with rock debris in the hole; in the normal drilling process, the sealing rubber core 2 is in a relaxation state, and the drill rod 1 penetrates through the middle of the sealing rubber core 2; when the drill rod 1 drills into a water-rich stratum, water gushing occurs in a drill hole, the pressure in the hole is increased, the mud returning amount is increased, and the drilling is stopped at the moment; the hydraulic switch 4 is pressed down, the pressure is rapidly transmitted to the piston 6 through the hydraulic conveying pipe 3, and then the sealing rubber core 2 is pushed to contract towards the center under the action of the supporting pipe 5, so that the conical sealing rubber core 2 tightly sealed with the drill rod 1 is formed; closing the pressure control valve 13 of the slag discharge pipe 12, gradually filling the whole closed space with slurry, increasing the pressure therewith, and slowly balancing the formation water pressure; opening the parallel valve 11, observing the pressure of the slurry in the drilling hole at the moment through the pressure gauge 9, further keeping the drilling rod 1 slowly drilling, and simultaneously observing the change of the indication number of the pressure gauge 9; the on-off state of the pressure control valve 13 is adjusted according to the indication change of the pressure gauge 9, so that the slag discharge pipe 12 keeps the normal discharge of the small-flow slurry return and the rock debris. When stratum water burst is finished, the pressure control valve 13 of the slag discharge pipe 12 is completely opened, the parallel valve 11 is closed, the piston 6 pulls the sealing rubber core 2 to recover the normal state, and the plugging and water stopping work is finished.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (7)
1. An orifice water burst prevention device for horizontal directional drilling engineering geological exploration, comprising:
the water stopping device is connected to one end, which does not enter the orifice, of the sleeve (17) and is used for blocking a large amount of water gushing when the drill rod (1) drills a aquifer;
the pressure testing device is sleeved at the end part of the orifice which is not entered into the sleeve (17) and is connected with the water stopping device, and one end of the pressure testing device, which deviates from the water stopping device, is fixed at the orifice and is used for detecting the water burst pressure in the sleeve (17).
2. The orifice water burst preventing device for geological exploration of horizontal directional drilling engineering according to claim 1, wherein the water burst preventing device comprises a shell (15), a support pipe (5), a hydraulic switch (4), a hydraulic conveying pipe (3), a plurality of pistons (6) and a plurality of sealing rubber cores (2), the shell (15) is sleeved on the support pipe (5) to form a connecting pipe with a cavity inside, the plurality of sealing rubber cores (2) are arranged in the support pipe (5) at intervals, the hydraulic switch (4) and the hydraulic conveying pipe (3) are arranged in the cavity of the connecting pipe, one end of each piston (6) is connected with the hydraulic conveying pipe (3), and the other end of each piston is connected with the sealing rubber core (2).
3. An orifice water burst prevention device for geological exploration in horizontal directional drilling engineering according to claim 1, characterized in that a sealing ring (7) is arranged at the connection of said water stop device and said pressure testing device.
4. The orifice water burst prevention device for geological exploration of horizontal directional drilling engineering according to claim 1, wherein the pressure testing device comprises a flange steel cylinder (8), a pressure measuring pipe (16), a pressure gauge (9), a stop valve (10), a parallel valve (11), a slag discharging pipe (12) and a pressure control valve (13), the flange steel cylinder (8) is sleeved on the end part of the sleeve (17) which does not enter the orifice, the pressure measuring pipe (16) penetrates through the flange steel cylinder (8) to be communicated with the sleeve (17), the parallel valve (11), the pressure gauge (9) and the stop valve (10) are arranged on the pressure measuring pipe (16), the slag discharging pipe (12) penetrates through the flange steel cylinder (8) to be communicated with the sleeve (17), and the pressure control valve (13) is arranged on the slag discharging pipe (12).
5. The orifice water flood prevention device for geological exploration in horizontal directional drilling projects according to claim 4, characterized in that the distance of said slag discharge pipe (12) from the orifice is smaller than the distance of said piezometric pipe (16) from the orifice.
6. The orifice water flood protection device for geological exploration in horizontal directional drilling projects according to claim 4, characterized in that said flanged steel cylinder (8) is fixed to said casing (17) by means of fastening bolts.
7. An aperture water inrush preventer for geological exploration of horizontal directional drilling engineering according to claim 1, characterized in that the end of the pressure tester facing away from the water stopping device is fixed at the aperture by a telescopic strut (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121171573.2U CN215169870U (en) | 2021-05-28 | 2021-05-28 | A water installation is prevented gushing in drill way for horizontal directional drilling engineering geological survey |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121171573.2U CN215169870U (en) | 2021-05-28 | 2021-05-28 | A water installation is prevented gushing in drill way for horizontal directional drilling engineering geological survey |
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| Publication Number | Publication Date |
|---|---|
| CN215169870U true CN215169870U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121171573.2U Expired - Fee Related CN215169870U (en) | 2021-05-28 | 2021-05-28 | A water installation is prevented gushing in drill way for horizontal directional drilling engineering geological survey |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898367A (en) * | 2022-11-08 | 2023-04-04 | 四川省金钻地质矿产勘探工程有限责任公司 | Measuring device for advanced geological forecast drilling of tunnel and using method thereof |
| CN117108191A (en) * | 2023-09-12 | 2023-11-24 | 四川省建筑科学研究院有限公司 | Drilling operation method for high-pressure water stratum |
-
2021
- 2021-05-28 CN CN202121171573.2U patent/CN215169870U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115898367A (en) * | 2022-11-08 | 2023-04-04 | 四川省金钻地质矿产勘探工程有限责任公司 | Measuring device for advanced geological forecast drilling of tunnel and using method thereof |
| CN115898367B (en) * | 2022-11-08 | 2023-10-03 | 四川省金钻地质矿产勘探工程有限责任公司 | Measurement device for advanced geological forecast drilling of tunnel and application method thereof |
| CN117108191A (en) * | 2023-09-12 | 2023-11-24 | 四川省建筑科学研究院有限公司 | Drilling operation method for high-pressure water stratum |
| CN117108191B (en) * | 2023-09-12 | 2024-05-17 | 四川省建筑科学研究院有限公司 | Drilling operation method for high-pressure water stratum |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |