CN111219183A - Water yield and water pressure detection device - Google Patents
Water yield and water pressure detection device Download PDFInfo
- Publication number
- CN111219183A CN111219183A CN202010068735.3A CN202010068735A CN111219183A CN 111219183 A CN111219183 A CN 111219183A CN 202010068735 A CN202010068735 A CN 202010068735A CN 111219183 A CN111219183 A CN 111219183A
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- water
- drill bit
- water pressure
- bore
- water pipe
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 194
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 68
- 238000005553 drilling Methods 0.000 claims abstract description 46
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims 4
- 238000000034 method Methods 0.000 abstract description 19
- 239000011435 rock Substances 0.000 abstract description 8
- 238000009412 basement excavation Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000013277 forecasting method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- 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
- E21B47/00—Survey of boreholes or wells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a water volume and water pressure detection device, which comprises a drill bit, wherein a drill hole is formed by drilling through the drill bit, and drilling fluid can circulate through the drill bit in the drilling process; the sealing device is connected with the drill bit and is hermetically connected with a drilling hole, so that a closed space is formed in the drilling hole; and the water pipe is connected with the sealing device, is communicated with the closed space, and is provided with a water yield and water pressure detection device. The method can directly measure the water pressure and water flow of the stratum, more accurately judge the water content condition of the surrounding rock in front of the tunnel excavation surface, and accordingly can forecast geological disasters under high water pressure conditions more accurately.
Description
Technical Field
The invention relates to a water quantity and water pressure detection device, in particular to a detection device for measuring the water quantity and water pressure of surrounding rock tunnel face water.
Background
In tunnel construction, groundwater is one of the largest risk sources. The underground water can cause the collapse of an excavation surface, and particularly when a fault fracture zone is met and stratum joints are dense, gushing water is likely to be generated. Engineering accidents caused by unclear detection or improper treatment of underground water are frequent, and huge economic losses are caused. Geological exploration before engineering construction cannot completely reflect geological conditions, particularly underground water detection needs to be carried out on a tunnel face in the construction process, engineering geological conditions and hydrogeological conditions in the construction range are mastered more accurately, and construction safety is guaranteed.
The existing advanced detection means at present mainly comprise a conventional geological sketch method, a geological mapping method, digital imaging and the like, an advanced pit guiding method parallel pit guiding method, a main tunnel pit guiding method, an advanced drilling forecasting method deep hole horizontal drilling, in-hole photography and the like, a physical exploration method, a geological radar, infrared water detection and the like. The conventional geological methods have the advantages of no interference on construction, simple equipment, quick result output, good forecasting effect and the like, and provide detailed geological data for the whole tunnel. The method has the defect that the report is easily missed for the unearthed unfavorable geology in front of the tunnel.
The advanced drilling method can visually reflect the geological condition in front of the tunnel face, is one of the most effective construction forecasting methods, and has good forecasting effects on the integrity of rock mass, underground water, geological structural planes perpendicular to the axis of the tunnel and the like. However, the traditional advanced drilling method mainly detects water based on oil pressure of a drilling machine oil pump, water pressure of an orifice and flow speed to estimate water head pressure and water inflow, and has strong experience dependence and low reliability.
Disclosure of Invention
In order to solve the problems, the invention provides a water flow and water pressure detection device which can directly measure the water pressure and water flow of a stratum, more accurately judge the underground water condition in front of an excavation surface and accordingly forecast geological disasters under high water pressure conditions more accurately.
The invention provides a water quantity and water pressure detection device, which comprises:
a drill bit through which a borehole is formed by drilling, and which is capable of circulating a drilling fluid during drilling;
the sealing device is connected with the drill bit and is hermetically connected with a drilling hole, so that a closed space is formed in the drilling hole; and
and the water pipe is connected with the sealing device and communicated with the closed space, and a water yield and water pressure detection device is arranged on the water pipe.
The invention is further improved in that the sealing device is in the shape of an annular cylinder, wherein a hole cavity is arranged;
wherein the drill bit passes through the bore and an outer wall of the drill bit is in sliding sealing connection with an inner wall of the bore.
The invention is further improved in that a rotary sealing ring is connected between the inner wall of the hole cavity and the outer wall of the drill bit.
The invention further improves that the sealing device is connected with the drilling hole through a gas-filled sealing ring.
A further improvement of the invention is that the center of the bore is located coaxially with the center of the bore, and the bore diameter is greater than the diameter of the bore; and the gap between the hole cavity and the drill bit is communicated with the annular space between the drill bit and the drill hole to form the closed space.
The invention has the further improvement that the side wall of the sealing device is provided with a water pipe mounting hole along the radial direction, and the water pipe mounting hole is communicated with the hole cavity; wherein, the water pipe sets up on the water pipe mounting hole.
The invention is further improved in that the water quantity and pressure detection device comprises a water pressure meter and a water flow meter which are arranged on the water pipe.
The invention is further improved in that the water pipe is provided with a filter, and the filter is arranged on the water pipe at a position upstream of the water quantity and water pressure detection device.
The invention is further improved in that a valve is arranged on the water pipe.
A further development of the invention is that the water pressure gauge is arranged at a position upstream of the water flow meter, and the valve is arranged between the water pressure gauge and the water flow meter.
Compared with the prior art, the invention has the advantages that:
the water flow and water pressure detection device can directly measure the water pressure and water flow of the stratum, more accurately judge the underground water condition in front of the excavation surface and accordingly forecast more accurately the geological disasters under the high water pressure condition. The invention not only realizes the sealing of the drill hole, the water pressure measuring result is closer to the actual condition, but also can directly detect the water pressure and the water quantity in the drill hole without intermediate signal processing, and the result is visual and reliable. In the detection process, the rock drill is used for drilling to perform detection, and special drilling is not needed. The invention has wide application range, and can be used in both shield tunnels and mountain tunnels under the condition of meeting the drilling conditions.
Drawings
Fig. 1 is a schematic structural view of a water quantity and pressure detecting apparatus according to an embodiment of the present invention;
in the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
The meaning of the reference symbols in the drawings is as follows: 1. the device comprises a sealing device, 2, a water pipe, 3, a drill bit, 11, a hole cavity, 12, a rotary sealing ring, 13, an inflatable sealing ring, 14, a water pipe mounting hole, 21, a water quantity and water pressure detection device, 22, a water pressure meter, 23, a water flow meter, 24, a filter, 25, a valve, 31, a drilling hole, 32 and a closed space.
Detailed Description
The invention will be further explained with reference to the drawings.
Fig. 1 schematically shows a water quantity and pressure detection apparatus according to an embodiment of the present invention. According to the water flow and water pressure detection device, the water pressure and the water flow of the stratum can be directly measured, the underground water condition in front of the excavation surface can be more accurately judged, and the geological disaster under the high water pressure condition can be more accurately forecasted.
As shown in fig. 1, the water volume and pressure detecting apparatus according to the present embodiment includes a drill 3. The drill bit 3 is a rock drill bit 3 which is capable of drilling to form a borehole 31. Drilling fluid can circulate in the drilling head 3, and during drilling of the drilling head 3, the end thereof can flow out. The drill bit 3 is connected with a sealing device 1 for sealing the opening 31 of the drill hole 31. The sealing device 1 is used for sealing and connecting the drill bit 3 and the drilling hole, so that a closed space 32 is formed in the drilling hole 31. The sealing device 1 is connected with a water pipe 2, the water pipe 2 is communicated with the closed space 32, and a water volume and water pressure detection device 21 is arranged on the water pipe 2. The water flow and pressure detecting device 21 can measure the water flow and the water pressure in the water pipe 2.
When the water quantity and water pressure detection device according to the present embodiment is used, the drill bit 3 can drill to a position to be detected. The sealing device 1 is capable of sealing the bore 31 to form a closed space 32. The closed space 32 is communicated with a water pipe 2. The drilling fluid during drilling by the drill bit 3 flows into the enclosed space 32 and is discharged through the water pipe 2, while water at the location where the tunnel wall rock is to be detected is discharged through the enclosed space 32 and the water pipe 2. Be provided with water yield water pressure measuring device on the water pipe 2, can measure discharge and water pressure, just can judge the content of water in the country rock body through the flow of contrast inflow and outflow water. The present embodiment accurately measures the water volume and pressure of the aquifer in the bottom layer by providing the sealing means 1 such that the closed space 32 is formed in the bore 31 and water can flow out only through the water pipe 2.
In one embodiment, the sealing device 1 is in the shape of an annular cylinder, provided with a bore 11 in its middle. In this embodiment the outer wall of the sealing device 1 is cylindrical and a cylindrical bore 11 is provided inside. One face of the sealing device 1 faces the ground and the bore 11 is aligned with the bore 31. In this embodiment, the drill bit 3 passes through the bore 11 and the outer wall of the drill bit 3 is in sliding sealing engagement with the inner wall of the bore. During the drilling process of the drill bit 3, the drill bit 3 and the sealing device 1 can move relatively and are always in a sealing state.
When the water quantity and water pressure detecting device according to the present embodiment is used, the sealing device 1 has an annular structure, and can be sleeved outside the drill bit 3 and cover the outside of the drill hole 31. During the drilling process of the drill bit 3, the drill bit 3 can always keep the sealing connection with the sealing device 1 during the drilling process, so that the closed space 32 is always in a closed state. Thus, the water and drilling fluid in the bottom layer can only flow out through the water pipe 2, so that the water volume and pressure in the bottom layer can be accurately measured.
In a preferred embodiment, a sealing ring, preferably a rotary sealing ring 12, is arranged between the inner wall of the bore 11 and the outer wall of the drill bit 3. The rotary sealing ring 12 is close to the sealing device 1 and the drill bit 3, when the drill bit 3 drills, the position of the rotary sealing ring 12 is unchanged, the drill bit 3 and the sealing device 1 can rotate, and therefore the drill bit 3 is connected with the sealing device 1 in a sliding mode.
In one embodiment, a sealing member is arranged between the sealing device 1 and the opening of the drilling hole 31, and the sealing member is a gas-filled sealing ring 13. The sealing device 1 is connected with the opening of the drilling hole 31 in an elastic sealing mode. The sealing device 1 and the drilling hole 31 are connected in a sealing mode through the inflatable sealing ring 13, and the sealing performance is improved.
In a preferred embodiment, the center of the bore 11 is arranged coaxially with the center of the bore 31, and the bore diameter is larger than the diameter of the bore 31; the space between the bore 11 and the drill bit 3 communicates with the annulus between the drill bit 3 and the borehole 31, forming the closed space 32.
When the water volume and water pressure detection device according to the embodiment is used, during the drilling process of the drill bit 3, drilling fluid flows in the drill bit 3, and the drilling fluid flows out at the end of the drill bit 3 for drilling by the drill bit 3. The drilling fluid together with the water in the bottom layer flows from the annulus between the drill bit 3 and the borehole 31 and into the space between the bore 11 and the drill bit 3 and finally out of the water pipe 2.
In one embodiment, the sealing device 1 is provided with a water pipe mounting hole 14, and the water pipe mounting hole 14 is arranged on the side wall of the sealing device 1 and penetrates through the outer wall of the side surface of the sealing device 1 and the inner cavity 11. The water pipe mounting hole 14 is used for mounting the water pipe 2, and the water pipe 2 is communicated with the cavity 11 inside the sealing device 1 through being communicated with the water pipe mounting hole 14 outside the sealing device 1, so that the closed space 32 is communicated.
In the water volume and water pressure detecting device according to the embodiment, the sealing device 1 is provided with the water pipe mounting hole 14, so that the water pipe 2 can be mounted without affecting the rotary sealing ring 12 and the inflatable sealing ring 13, the position of the water pipe 2 is prevented from affecting the sealing performance of the water pipe, and the accuracy of a detection result is ensured.
In one embodiment, the water volume and pressure detecting device 21 comprises a water pressure meter 22 and a water flow meter 23 arranged on the water pipe 2. The water pressure gauge 22 is capable of measuring the water pressure within the water pipe 2 and the water flow meter 23 is capable of measuring the water flow in the water pipe 2. The state of the water in the bottom layer can be calculated through the water pressure and the water flow.
In a preferred embodiment, a filter 24 is disposed on the water pipe 2, and the filter 24 is disposed on the water pipe 2 at a position upstream of the water quantity and pressure detection device 21. The upstream refers to the direction of water flowing into one end of the water pipe 2, and in this embodiment, the end close to the water pipe installation hole 14 of the sealing device 1 is the upstream.
In the water quantity and pressure detecting device according to the present embodiment, the filter 24 can filter out silt in water, and a part of silt or other impurities is not generated in the drilling process of the drill bit 3. Through filter 24 filters the back, has reduced silt and impurity water yield water pressure testing arrangement during operation can not receive the influence of impurity to measuring accuracy has been improved.
In one embodiment, a valve 25 is provided on the water pipe 2. The valve 25 can control the water pipe 2 to be closed, opened or the opening degree of the water pipe 2. Before the water quantity and pressure detection device 21, sludge in water is filtered through the filter 24, and detection can be carried out only after the whole system is filled with water. The valve 25 is closed, and the water pressure can be measured through the water pressure meter 22; after the valve 25 is opened, the water flow can be measured through the water flow meter 23, and the water flow and the water pressure parameters of the tunnel surrounding rock are obtained while the drilling trolley drills, so that the water pressure and the water flow in the drilled hole can be conveniently measured.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A water quantity and pressure detection device is characterized by comprising:
a drill bit (3) for drilling a borehole (31) through the drill bit (3), the drill bit (3) being capable of circulating a drilling fluid during drilling;
the sealing device (1) is connected with the drill bit (3), and the sealing device (1) is connected with the opening of the drill hole (31) in a sealing mode, so that a closed space (32) is formed in the drill hole (31); and
the water pipe (2) is connected with the sealing device (1), the water pipe (2) is communicated with the closed space (32), and a water quantity and water pressure detection device (21) is arranged on the water pipe (2).
2. A water pressure probe according to claim 1, characterized in that the sealing means (1) is in the shape of an annular cylinder and is provided with a bore (11) in the middle;
wherein the drill bit (3) passes through the bore (11), and the outer wall of the drill bit (3) is connected with the inner wall of the bore (11) in a sliding and sealing way.
3. A water pressure probe according to claim 2, characterized in that a rotary sealing ring (12) is connected between the inner wall of the bore (11) and the outer wall of the drill bit (3).
4. A water pressure detecting device according to any of claims 1-3, characterized in that the sealing device (1) is connected to the bore hole (31) opening by means of a gas-filled sealing ring (13).
5. A water pressure probe according to claim 4, characterized in that the center of the bore (11) is arranged coaxially with the center of the bore (31) and that the diameter of the bore (11) is larger than the diameter of the bore (31); the gap between the hole cavity (11) and the drill bit (3) is communicated with the annular space between the drill bit (3) and the drill hole (31) to form the closed space (32).
6. A water pressure detecting device according to any of claims 2 to 5, characterized in that the side wall of the sealing device (1) is provided with a water pipe mounting hole (14) along the radial direction, and the water pipe mounting hole (14) is communicated with the bore (11); wherein the water pipe (2) is arranged on the water pipe mounting hole (14).
7. The water pressure detecting device according to claim 6, characterized in that the water volume and pressure detecting device (21) comprises a water pressure meter (22) and a water flow meter (23) provided on the water pipe (2).
8. The water pressure detecting device according to claim 7, wherein a filter (24) is provided on the water pipe (2), and the filter (24) is provided on the water pipe (2) at a position upstream of the water quantity and pressure detecting device (21).
9. A water pressure probe according to claim 7 or 8, wherein a valve (25) is provided on the water pipe (2).
10. A water pressure detecting device according to claim 9, wherein the water pressure gauge (22) is provided at a position upstream of the water flow meter (23), and the valve (25) is provided between the water pressure gauge (22) and the water flow meter (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010068735.3A CN111219183B (en) | 2020-01-21 | 2020-01-21 | Water volume and water pressure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010068735.3A CN111219183B (en) | 2020-01-21 | 2020-01-21 | Water volume and water pressure detection device |
Publications (2)
| Publication Number | Publication Date |
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| CN111219183A true CN111219183A (en) | 2020-06-02 |
| CN111219183B CN111219183B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010068735.3A Active CN111219183B (en) | 2020-01-21 | 2020-01-21 | Water volume and water pressure detection device |
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| Country | Link |
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| CN (1) | CN111219183B (en) |
Cited By (1)
| 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 |
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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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN111219183B (en) | 2023-07-04 |
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