CN214503282U - Water pressure test device - Google Patents
Water pressure test device Download PDFInfo
- Publication number
- CN214503282U CN214503282U CN202120293399.2U CN202120293399U CN214503282U CN 214503282 U CN214503282 U CN 214503282U CN 202120293399 U CN202120293399 U CN 202120293399U CN 214503282 U CN214503282 U CN 214503282U
- Authority
- CN
- China
- Prior art keywords
- drill rod
- pipe
- drill
- water pressure
- drilling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a water pressure test device, which comprises a drilling drill rod provided with a flow recorder, wherein the drilling drill rod comprises a first drill rod and a second drill rod arranged at a drilling test section when in use, and the bottom end of the first drill rod is communicated with the top end of the second drill rod through a connecting pipe; the lateral wall of connecting pipe is equipped with the branch pipe, the branch pipe top is provided with pressure sensor, and the top of this branch pipe is not higher than the bottom of first drilling rod in the height. The utility model discloses can eliminate the error that pipeline loss pressure experience calculation brought, the accurate water pressure who acquires the test section.
Description
Technical Field
The utility model relates to a water pressure test's technical field especially relates to a water pressure test device.
Background
The hydropower construction of China is at the leading level in the world, and in large-scale and extra-large-scale hydropower engineering and the like, the depths of exploration drilling holes are large and exceed 100m as the depths of burial of a water diversion power generation system, a water release structure, an anti-seepage curtain and the like are large. Obtaining the permeability of rock mass at certain positions in the drilled hole is an important part of the arrangement of the building.
The water permeability of the rock mass is usually obtained by a water pressure test in engineering, and is calculated by a pressure value (P3) and a flow value (Q3) in the maximum pressure stage in the water pressure test. Generally, the value counted by the flowmeter is an accurate flow rate value Q3, and a test pressure value P3 measured according to a conventional water pressure test method is equal to an earth surface pressure gauge indicating pressure + head pressure-pipeline loss pressure, the head pressure is calculated according to the relation between the underground water level of the drill hole and the hole depth of the test section, and the pipeline loss pressure is generally calculated by an empirical formula. Generally speaking, as the drilling depth deepens, the calculated error of the pipeline loss pressure is larger, the calculated error of the test pressure is larger, and the test value error of the water permeability of the rock body in the test section is larger.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a water pressure test device to eliminate the calculation error that pipeline loss pressure and head pressure brought, the accurate pressure value that acquires the test section.
In order to achieve the above object, the utility model adopts the following technical scheme: a water pressure test device comprises a drilling drill rod provided with a flow recorder, wherein the drilling drill rod comprises a first drill rod and a second drill rod arranged at a drilling test section during use, and the bottom end of the first drill rod is communicated with the top end of the second drill rod through a connecting pipe; the lateral wall of connecting pipe is equipped with the branch pipe, the branch pipe top is provided with pressure sensor, and the top of this branch pipe is not higher than the bottom of first drilling rod in the height.
Water flows through the flow recorder, is shunted to the branch pipe through the connecting pipe along the first drill rod, and the pressure sensor on the upper part of the branch pipe can measure the water pressure in real time. Because the connecting pipe and the branch pipe are close to the second drill pipe positioned in the test section, the water pressure measured at the position can be regarded as the water pressure of the test section, and therefore calculation errors caused by pressure loss of the pipeline can be eliminated.
Preferably, the first drill pipe, the second drill pipe, the connecting pipe and the branch pipe have the same inner diameter. Therefore, the water pressure measured by the pressure sensor can be directly regarded as the pressure value of the test section.
Preferably, the pressure sensor is connected with the pressure recorder through a lead.
Preferably, the connecting pipe is detachably connected with the first drill pipe and the second drill pipe respectively.
Preferably, the connecting pipe is respectively connected with the first drill pipe and the second drill pipe in a threaded manner.
Preferably, a water stop plug is mounted on the side wall of the second drill rod.
The utility model has the advantages that: the device of the utility model is simple in structure, with low costs, installation, dismantlement convenient and fast can eliminate the error that pipeline loss pressure experience calculation brought, and the accurate water pressure that acquires the test section, and then the rock mass rate of permeating water that calculates the test section through the flow recorder accuracy.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is an enlarged view of a point a in fig. 1.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
The utility model provides a pressurized-water test device, includes flow recorder 1, pressure sensor 3 and voltage regulator device, and voltage regulator device includes connecting pipe 4 and branch pipe 5 that the internal diameter that communicates each other is the same, and the lower extreme of connecting pipe 4 sets up in the upper end of second drilling rod 9, and first drilling rod 2 is connected to the upper end of connecting pipe 4, is provided with flow recorder 1 on the water inlet of first drilling rod 2, is provided with pressure sensor 3 on the top of branch pipe 5.
The connecting pipe 4 and the branch pipe 5 are arranged side by side and are in an inverted 'h' shape. The connecting pipe 4 is arranged in line with the second drill rod 9 and the first drill rod 2, and the inner diameters of the connecting pipe, the second drill rod 9 and the first drill rod are the same. The connecting pipe 4 is detachably connected with the second drill rod 9 and the first drill rod 2 respectively. Wherein, the connecting pipe 4 is respectively connected with the second drill rod 9 and the first drill rod 2 by screw threads.
The pressure sensor 3 is connected with a pressure recorder 6 through a lead 7, so that the water pressure can be displayed and recorded in real time conveniently. The outer wall of the second drill rod 9 is provided with a water stop plug 8. The water flows through the flow recorder 1 and is distributed to the branch pipe 5 along the first drill rod 2 through the connecting pipe 4, and the pressure sensor 3 on the upper part of the branch pipe 5 transmits the pressure value to the pressure recorder 6. Because the pressure stabilizing device is close to the second drill rod of the test section, the water pressure measured at the position can be regarded as the water pressure of the test section, and the water permeability of the rock mass of the test section can be calculated by combining the value measured by the flow recorder 1.
Claims (6)
1. A water pressure test device comprises a drilling drill rod provided with a flow recorder (1), and is characterized in that the drilling drill rod comprises a first drill rod (2) and a second drill rod (9) installed in a drilling test section during use, and the bottom end of the first drill rod (2) is communicated with the top end of the second drill rod (9) through a connecting pipe (4); the lateral wall of connecting pipe (4) is equipped with branch pipe (5), branch pipe (5) top is provided with pressure sensor (3), and the top of this branch pipe (5) is not higher than the bottom of first drilling rod (2) in the height.
2. The water pressure test apparatus according to claim 1, wherein the first drill pipe (2), the second drill pipe (9), the connecting pipe (4) and the branch pipe (5) have the same inner diameter.
3. The water pressure test apparatus according to claim 1, wherein the pressure sensor (3) is connected to the pressure recorder (6) via a line (7).
4. The water pressure test apparatus according to claim 1, wherein the connecting pipe (4) is detachably connected to the first drill pipe (2) and the second drill pipe (9), respectively.
5. The water pressure test apparatus according to claim 4, wherein the connecting pipe (4) is in threaded connection with the first drill pipe (2) and the second drill pipe (9), respectively.
6. The water pressure test device according to claim 1, characterized in that a water stop plug (8) is mounted on the side wall of the second drill pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120293399.2U CN214503282U (en) | 2021-02-02 | 2021-02-02 | Water pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120293399.2U CN214503282U (en) | 2021-02-02 | 2021-02-02 | Water pressure test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214503282U true CN214503282U (en) | 2021-10-26 |
Family
ID=78218569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120293399.2U Active CN214503282U (en) | 2021-02-02 | 2021-02-02 | Water pressure test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214503282U (en) |
-
2021
- 2021-02-02 CN CN202120293399.2U patent/CN214503282U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105806712B (en) | Hole internal water pressure test device and test macro | |
| CN110578498B (en) | Self-adaptive air release rod and shallow layer air controlled air release recovery system and method | |
| CN108222082B (en) | Dynamic precipitation indoor model test method and device for foundation pit under condition of multiple aquifers | |
| CN201903348U (en) | Monitoring device for soil displacement and pore water pressure of seabed | |
| CN104535422A (en) | Device and method for simulating and testing deformation of drilled hole | |
| CN113125066B (en) | Device and method for testing upper floating force of single-ring duct piece | |
| CN103644986B (en) | A kind of rock pressure [in mine measurement mechanism based on hollow grouting anchor structure | |
| CN214503282U (en) | Water pressure test device | |
| CN206144551U (en) | Water pressure test in borehole system | |
| CN204386589U (en) | A kind of device of simulation test boring distortion | |
| CN203658014U (en) | Seabed nutritive salt gas injection lifting tester | |
| CN205691428U (en) | Hole internal water pressure test device and test system | |
| CN202189002U (en) | Varying head penetration test measuring system device | |
| CN212722514U (en) | Water pressure test device | |
| CN211900564U (en) | Water distribution device for oil field | |
| CN108680483B (en) | Soil body in-situ permeability coefficient measuring device and testing method | |
| CN208847849U (en) | A kind of Water-level hydraulic measuring device of artesian water | |
| CN207894401U (en) | A kind of monitoring system of riverbed vertical deformation | |
| CN208223588U (en) | A kind of groundwater level meter bracket | |
| CN202064835U (en) | Combined drilling tool used for pre-drilling lateral loading test | |
| CN206459712U (en) | A kind of pressure acquisition device and hydrodynamic gauge | |
| CN217738949U (en) | A downthehole collection system for on-spot rock mass high pressure water test | |
| CN201433789Y (en) | Ascending hole coal-bed gas pressure detection water pressure eliminator | |
| CN220228686U (en) | Water flow speed measuring device | |
| CN115898367B (en) | Measurement device for advanced geological forecast drilling of tunnel and application method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |