CN111219183B - Water volume and water pressure detection device - Google Patents
Water volume and water pressure detection device Download PDFInfo
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- CN111219183B CN111219183B CN202010068735.3A CN202010068735A CN111219183B CN 111219183 B CN111219183 B CN 111219183B CN 202010068735 A CN202010068735 A CN 202010068735A CN 111219183 B CN111219183 B CN 111219183B
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- water
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- detection device
- sealing
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 186
- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 238000005553 drilling Methods 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 18
- 239000011435 rock Substances 0.000 abstract description 8
- 238000009412 basement excavation Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 7
- 239000003673 groundwater Substances 0.000 description 5
- 239000012535 impurity Substances 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000013277 forecasting method Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 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 the drill bit can circulate drilling fluid in the drilling process; the sealing device is connected with the drill bit and is in sealing connection with the drill hole opening, so that a closed space is formed in the drill hole; and the water pipe is connected with the sealing device, is communicated with the closed space and is provided with a water quantity and water pressure detection device. The invention can directly measure the water pressure and water flow of the stratum, more accurately judge the water content condition of surrounding rock in front of the tunnel excavation face, and accordingly, more accurately forecast geological disasters under high water pressure conditions.
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 face water.
Background
Groundwater is one of the largest sources of risk in tunnel construction. Groundwater can cause the excavation face to collapse, especially when meetting fault fracture area, stratum joint is intensive, probably can produce gushing water. Engineering accidents caused by unclear detection or improper treatment of underground water are frequent, so that huge economic losses are caused. Geological investigation before engineering construction can not fully reflect geological conditions, particularly underground water detection, and the advance detection of a face is required in the construction process, so that engineering geology and hydrogeology conditions in the construction range can be mastered more accurately, and the construction safety is ensured.
The existing advanced detection means mainly comprise conventional geological sketching methods, geological mapping methods, digital imaging methods and the like, an advanced pilot pit method parallel pilot pit method, a positive hole pilot pit method, an advanced drilling forecasting method deep hole horizontal drilling method, in-hole photography and the like, physical exploration methods, geological radar, infrared water exploration and the like. The conventional geological methods have the advantages of no interference to construction, simple equipment, quick result, good forecasting effect and the like, and provide detailed geological data for the whole tunnel. The method has the defect that the method is easy to report to the unexcavated bad geology in front of the tunnel.
The advanced drilling method can intuitively reflect the geological condition in front of the tunnel face, is one of the most effective methods for construction prediction, and has good prediction effects on rock mass integrity, groundwater, geological structure faces perpendicular to tunnel axes and the like. However, the conventional advanced drilling method is used for detecting water, the water head pressure and the water inflow are estimated based on the oil pressure of the oil pump of the drilling machine, the water pressure of the orifice and the flow rate, the experience dependence is strong, and the reliability is low.
Disclosure of Invention
Aiming at the problems, the invention provides the water quantity and water pressure detection device which can directly measure the water pressure and water flow of a stratum, more accurately judge the groundwater condition in front of an excavation face and can more accurately forecast geological disasters under high water pressure.
The invention provides a water volume and water pressure detection device, which comprises:
a drill bit through which a borehole is formed by drilling, and which is capable of circulating drilling fluid during drilling;
the sealing device is connected with the drill bit and is in sealing connection with the drill hole opening, so that a closed space is formed in the drill hole; and
the water pipe is connected with the sealing device, is communicated with the closed space, and is provided with a water volume and water pressure detection device.
A further improvement of the invention is that the sealing means is in the shape of an annular cylinder in which the bore is provided;
wherein the drill bit passes through the bore and the outer wall of the drill bit is in sliding sealing connection with the inner wall of the bore.
A further improvement of the invention is that a rotary seal ring is connected between the inner wall of the bore cavity and the outer wall of the drill bit.
A further development of the invention is that the sealing device is connected to the drill hole via an inflatable sealing ring.
A further improvement of the invention is that the center of the bore is coaxially arranged with the center of the borehole and the hole diameter is larger than the diameter of the borehole; and the gap between the cavity and the drill bit is communicated with the annulus between the drill bit and the drilled hole, so that the closed space is formed.
The invention is further improved in that a water pipe mounting hole is arranged on the side wall of the sealing device 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 further improves that the water quantity and water pressure detection device comprises a water pressure meter and a water flow meter which are arranged on the water pipe.
A further development of the invention consists in that a filter is arranged on the water pipe, which filter is arranged on the water pipe at a position upstream of the water volume and water pressure detection device.
The invention further improves that the water pipe is provided with a valve.
A further improvement of the present invention is that the water pressure gauge is disposed at a position upstream of the water flow gauge, and the valve is disposed between the water pressure gauge and the water flow gauge.
Compared with the prior art, the invention has the advantages that:
the water volume and water pressure detection device can directly measure the water pressure and water flow of the stratum, more accurately judge the groundwater condition in front of the excavation face, and accordingly, more accurately forecast geological disasters under high water pressure conditions. The invention not only realizes the sealing of the drilling hole, the water pressure measuring result is closer to the actual situation, but also can directly detect the water pressure and the water quantity in the drilling hole without intermediate signal processing, and the result is visual and reliable. In the detection process, the drilling is carried out by using a rock drill, and no special drilling is needed. The invention has wide application range, and can be used for both shield tunnels and mountain tunnels under the condition of meeting drilling conditions.
Drawings
Fig. 1 is a schematic structural view of a water pressure detecting device according to an embodiment of the present invention;
in the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.
The meaning of the reference numerals in the drawings is as follows: 1. the sealing 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 volume and water pressure detecting 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 described with reference to the accompanying drawings.
Fig. 1 schematically shows a water volume and pressure detection device according to an embodiment of the invention. According to the water quantity and water pressure detection device, the water pressure and water flow of the stratum can be directly measured, the underground water condition in front of the excavation face can be accurately judged, and accordingly geological disasters under high water pressure conditions can be accurately predicted.
As shown in fig. 1, the water pressure detecting device for water volume according to the present embodiment includes a drill bit 3. The drill bit 3 is a rock drill bit 3 which is capable of drilling to form a borehole 31. Drilling fluid can flow through the drill bit 3, and the end of the drill bit 3 can flow out of the drilling fluid during drilling. The drill bit 3 is connected with a sealing device 1 for sealing the opening of the borehole 31. The sealing device 1 is used for sealing and connecting the drill bit 3 and the drill hole head, so that a closed space 32 is formed in the drill 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 volume and pressure detection device 21 can measure the water volume and pressure in the water pipe 2.
When the water volume and pressure detection device according to the embodiment is used, the drill bit 3 can drill to a position required 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 the water pipe 2. Drilling fluid during drilling of the drill bit 3 flows into the closed space 32 and is discharged through the water pipe 2, while water at a position where the surrounding rock of the tunnel needs to be detected is discharged through the closed space 32 and the water pipe 2. The water pipe 2 is provided with a water volume and water pressure measuring device, so that the water flow and the water pressure can be measured, and the water content in the surrounding rock body can be judged by comparing the flow of inflow water and outflow water. In this embodiment, by providing the sealing device 1, the sealed space 32 is formed in the bore hole 31, and water can only flow out through the water pipe 2, thereby accurately measuring the water volume and the water pressure of the aquifer in the bottom layer.
In one embodiment, the sealing device 1 is in the shape of an annular cylinder, and the middle part of the sealing device is provided with a cavity 11. In this embodiment, the outer wall of the sealing device 1 is cylindrical, and a cylindrical cavity 11 is provided inside. One of the sealing devices 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 connection with the inner wall of the bore. During the drilling of the drill bit 3, the drill bit 3 and the sealing device 1 can move relatively and are always in a sealed state.
When the water volume and pressure detecting device according to the present embodiment is used, the sealing device 1 has a ring structure, and can be sleeved outside the drill bit 3 and coated outside the drill hole 31. During the drilling process of the drill bit 3, the drill bit 3 can be always in sealing connection with the sealing device 1 during drilling, 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, thereby accurately measuring the water quantity and pressure in the bottom layer.
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 rotary sealing ring 12 is unchanged in position and can rotate between the drill bit 3 and the sealing device 1, and therefore sliding connection between the drill bit 3 and the sealing device 1 is achieved.
In one embodiment, a sealing element is arranged between the sealing device 1 and the opening of the drilling hole 31, and the sealing element is an inflatable sealing ring 13. The sealing device 1 and the opening of the drilling hole 31 are elastically and hermetically connected. The sealing device 1 and the drilling hole 31 are connected in a sealing way through the inflatable sealing ring 13, so that the sealing performance is improved.
In a preferred embodiment, the center of the bore 11 is coaxial with the center of the bore 31 and the bore diameter is greater than the diameter of the bore 31; the gap 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 pressure detection device according to the present embodiment is used, the drill bit 3 flows in the drill bit 3 during drilling, and the drilling fluid flows out at the end of the drill bit 3 for drilling by the drill bit 3. The drilling fluid flows together with the water in the bottom layer 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 face 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 outside the sealing device 1 by communicating with the water pipe mounting hole 14, so as to communicate with the closed space 32.
In the water volume and pressure detection device according to the present 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, and the sealing performance of the water pipe 2 is prevented from being affected by the position of the water pipe 2, thereby ensuring the accuracy of the detection result.
In one embodiment, the water volume and pressure detection device 21 comprises a water pressure gauge 22 and a water flow meter 23 which are arranged on the water pipe 2. The water pressure meter 22 is capable of measuring the water pressure in 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 provided on the water pipe 2, the filter 24 being provided on the water pipe 2 at a position upstream of the water volume water pressure detection device 21. The upstream is the direction of the water flowing into one end of the water pipe 2, and in this embodiment, the end of the water pipe mounting hole 14 near the sealing device 1 is upstream.
In the water volume and pressure detecting device according to the present embodiment, the filter 24 can filter out sediment in water, and a portion of sediment or other impurities is not generated during the drilling process of the drill bit 3. After filtering through the filter 24, sediment and impurities are reduced, and the water quantity and water pressure testing device is not affected by the impurities when working, so that the accuracy of measurement is improved.
In one embodiment, the water pipe 2 is provided with a valve 25. The valve 25 may control the closing of the water pipe 2, the opening of the water pipe 2 or the opening degree of the water pipe 2. The mud in the water is filtered by a filter 24 before the water volume and pressure detection device 21, and the detection can be performed after the whole system is filled with the water. Closing the valve 25, the water pressure can be measured by the water pressure gauge 22; after the valve 25 is opened again, the water flow can be measured through the water flowmeter 23, and the water flow and water pressure parameters of the surrounding rock of the tunnel can be obtained while the drill jumbo drills, so that the water pressure and water flow in the drilling 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 respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (3)
1. A water volume and pressure detection device, comprising:
-a drill bit (3), through which drill bit (3) a borehole (31) is formed, and which drill bit (3) is capable of circulating 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 drilling hole (31) in a sealing way, so that a closed space (32) is formed in the drilling hole (31); the sealing device (1) is in the shape of an annular cylinder, and a hole cavity (11) is arranged in the middle of the sealing device; the drill bit (3) passes through the cavity (11), and the outer wall of the drill bit (3) is connected with the inner wall of the cavity (11) in a sliding sealing way; a rotary sealing ring (12) is connected between the inner wall of the hole cavity (11) and the outer wall of the drill bit (3); the sealing device (1) is connected with the opening of the drilling hole (31) through an inflatable sealing ring (13); and
a water pipe (2) connected with the sealing device (1), wherein 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);
a filter (24) is arranged on the water pipe (2), and the filter (24) is arranged on the water pipe (2) at a position upstream of the water volume and water pressure detection device (21);
the water volume and water pressure detection device (21) comprises a water pressure meter (22) and a water flow meter (23) which are arranged on the water pipe (2); a valve (25) is arranged on the water pipe (2); the water pressure gauge (22) is arranged at a position upstream of the water flow meter (23), and the valve (25) is arranged between the water pressure gauge (22) and the water flow meter (23).
2. The water volume and pressure detection device according to claim 1, characterized in that the centre of the bore (11) is arranged coaxially with the centre of the bore (31) and that the bore (11) diameter is larger than the diameter of the bore (31); the gap between the cavity (11) and the drill bit (3) is communicated with the annulus between the drill bit (3) and the drill hole (31) to form the closed space (32).
3. The water volume and pressure detection device according to claim 2, characterized in that a water pipe mounting hole (14) is arranged on the side wall of the sealing device (1) along the radial direction, and the water pipe mounting hole (14) is communicated with the cavity (11); wherein the water pipe (2) is arranged on the water pipe mounting hole (14).
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 |
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| Publication Number | Publication Date |
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| CN111219183A CN111219183A (en) | 2020-06-02 |
| CN111219183B true CN111219183B (en) | 2023-07-04 |
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| CN202010068735.3A Active CN111219183B (en) | 2020-01-21 | 2020-01-21 | Water volume and water pressure detection device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5679894A (en) * | 1993-05-12 | 1997-10-21 | Baker Hughes Incorporated | Apparatus and method for drilling boreholes |
| JP2001280053A (en) * | 2000-03-31 | 2001-10-10 | Dia Consultant:Kk | Method for measuring ground-water pressure |
| GB2380802B (en) * | 2001-10-12 | 2003-09-24 | Schlumberger Holdings | Method and apparatus for pore pressure monitoring |
| CN101761346A (en) * | 2009-12-30 | 2010-06-30 | 中铁十二局集团第二工程有限公司 | Method for constructing metamorphic rock confined water tunnel |
| CN103993873A (en) * | 2014-05-29 | 2014-08-20 | 淮南矿业(集团)有限责任公司 | Pressure measuring device |
| JP2017128881A (en) * | 2016-01-19 | 2017-07-27 | 鹿島建設株式会社 | Ground-water pressure measuring method in ground drilling and drill rod |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076636B (en) * | 2012-12-26 | 2015-09-02 | 山东大学 | The real-time detecting water by pilot hole apparatus and method of constructing tunnel orientation with drilling induced polarization |
| CN204126636U (en) * | 2014-06-19 | 2015-01-28 | 国投新集能源股份有限公司 | Upward drilling pressure measuring device for water isolation |
| CN105714755B (en) * | 2016-03-09 | 2017-07-11 | 同济大学 | Openable tunnel advanced water pressure and water quantity detection device |
| CN106761804B (en) * | 2016-11-30 | 2018-11-30 | 山东大学 | One kind being equipped on TBM advanced hydraulic pressure detection device and method in real time |
| JP6948897B2 (en) * | 2017-09-26 | 2021-10-13 | 大成建設株式会社 | Advanced boring mouth structure |
| CN108442925B (en) * | 2018-06-20 | 2023-10-20 | 中国地质大学（北京） | Water pressure and water temperature intelligent measurement device suitable for advanced geological forecast of mine |
-
2020
- 2020-01-21 CN CN202010068735.3A patent/CN111219183B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5679894A (en) * | 1993-05-12 | 1997-10-21 | Baker Hughes Incorporated | Apparatus and method for drilling boreholes |
| JP2001280053A (en) * | 2000-03-31 | 2001-10-10 | Dia Consultant:Kk | Method for measuring ground-water pressure |
| GB2380802B (en) * | 2001-10-12 | 2003-09-24 | Schlumberger Holdings | Method and apparatus for pore pressure monitoring |
| CN101761346A (en) * | 2009-12-30 | 2010-06-30 | 中铁十二局集团第二工程有限公司 | Method for constructing metamorphic rock confined water tunnel |
| CN103993873A (en) * | 2014-05-29 | 2014-08-20 | 淮南矿业(集团)有限责任公司 | Pressure measuring device |
| JP2017128881A (en) * | 2016-01-19 | 2017-07-27 | 鹿島建設株式会社 | Ground-water pressure measuring method in ground drilling and drill rod |
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| CN111219183A (en) | 2020-06-02 |
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