CN209979443U - Seepage observation system - Google Patents
Seepage observation system Download PDFInfo
- Publication number
- CN209979443U CN209979443U CN201920370082.7U CN201920370082U CN209979443U CN 209979443 U CN209979443 U CN 209979443U CN 201920370082 U CN201920370082 U CN 201920370082U CN 209979443 U CN209979443 U CN 209979443U
- Authority
- CN
- China
- Prior art keywords
- pressure
- drilling
- pipe section
- observation system
- seepage
- 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.)
- Expired - Fee Related
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000005553 drilling Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 11
- 239000000440 bentonite Substances 0.000 claims abstract description 11
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004746 geotextile Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000008676 import Effects 0.000 claims abstract description 9
- 239000011449 brick Substances 0.000 claims abstract description 6
- 238000012946 outsourcing Methods 0.000 claims abstract description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000008397 galvanized steel Substances 0.000 claims description 3
- 239000011178 precast concrete Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000004576 sand Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a seepage flow observation system, including dam body drilling, pressure-measuring pipe and import protection body, the pressure-measuring pipe is placed in the dam body drilling, the import protection body is built by laying bricks or stones in dam body drilling top and is encircleed around the pressure-measuring pipe, be provided with the cavity groove in the import protection body, the cavity groove top is stamped the apron, the cavity inslot is arranged in on the pressure-measuring pipe top, the pressure-measuring pipe includes pipe section and water inlet pipe section from top to bottom, be equipped with hoop evenly distributed's steel pipe drilling on the water inlet pipe section, water inlet pipe section outsourcing non-woven geotextile, the gap between water inlet pipe section and the dam body drilling is filled the filter material, and the gap is filled the bentonite ball between pipe section and the dam body drilling, separates with the rubber circle between bentonite ball and the filter material. The utility model discloses have the observation convenient, prevent stifled, the effect that prevents to silt up.
Description
Technical Field
The utility model relates to a stable field of surveing of seepage such as dyke, earth dam especially relates to a seepage observation system.
Background
With the high-speed development of economy, river comprehensive treatment and medium and small reservoir danger-eliminating and reinforcing projects are implemented all over the country, the problems of side slope seepage and anti-skid stability brought by the implementation of the projects are always the key points of attention of people, however, dam break and side slope instability of medium and small reservoirs still occur every year, and great harm is brought to the life and property safety of people.
The piezometric tube is widely applied as the most common seepage observation equipment in hydraulic engineering. However, in water conservancy projects, particularly small and medium-sized water conservancy projects, the traditional seepage pressure observation pipe is frequently blocked by a pressure measuring pipe after running for many years, and the observation facility is overhauled and artificially damaged for a long time, so that the effect of observing the seepage water level is lost. Under the action of seepage pressure, the following two kinds of instability problems frequently occur on earth dams and embankment slopes: firstly, soil body particles of a dam body or an embankment are taken away by seepage water flow, and piping or soil flowing phenomena occur to cause instability of a side slope; secondly, the seepage line of the dam body or the dike is too high, so that the slope is unstable in skid resistance. Most of the problems can be solved by observing the seepage water levels of different sections without point positions by using the piezometric tube, fitting the water levels into a seepage line, calculating the seepage slip ratio drop and the slope anti-skid safety coefficient, and taking engineering measures in time according to the calculation result to avoid the occurrence of slope instability accidents.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide a seepage observation system, which has the effects of convenient observation, clogging prevention and damage prevention.
The technical scheme of the utility model:
the utility model provides a seepage flow observation system, includes dam body drilling, pressure-measuring pipe and the import protection body, the pressure-measuring pipe is placed in the dam body drilling, the import protection body is built by laying bricks or stones in dam body drilling top and is encircleed around the pressure-measuring pipe, be provided with the cavity groove in the import protection body, the cavity groove top is covered with the apron, the cavity inslot is arranged in on the pressure-measuring pipe top, the pressure-measuring pipe includes pipe section and intake pipe section from top to bottom, be equipped with hoop evenly distributed's steel pipe drilling on the intake pipe section, intake pipe section outsourcing non-woven geotextile, the gap between intake pipe section and the dam body drilling is filled the filter material, and the gap is filled the bentonite ball between pipe section and the dam body drilling, separates with the rubber circle between bentonite ball and the filter.
Furthermore, the steel pipe drilling holes are circumferentially and uniformly distributed and are longitudinally and alternately arranged.
Further, the steel pipe drilling rings are uniformly distributed in the 6 circular directions, the number of the non-woven geotextiles is two, the non-woven geotextiles are 200 g/square meter of non-woven geotextiles, and the non-woven geotextiles are wound and tightened by lead wires.
Further, the bottom of the pressure measuring pipe is sealed by a circular steel plate, and a bottom sealing hole is formed in the bottom of the circular steel plate, so that the pressure measuring pipe is convenient to further permeate water.
Furthermore, the top end of the piezometric tube is provided with a plug.
Furthermore, the plug is connected with the inlet of the piezometric tube through a screw thread.
Furthermore, the piezometric tube is a galvanized steel tube.
Furthermore, the filter material is a medium-coarse sand filter material with the thickness of 0.35-2 mm, and the bentonite balls are air-dried bentonite balls.
Furthermore, the inlet protection body is built by cement bricks, and the cover plate is a concrete prefabricated cover plate.
Compare with traditional pressure-measuring pipe, the utility model discloses beneficial effect lies in:
the steel pipe drilling holes are uniformly distributed in the circumferential direction of the water inlet pipe section of the pressure measuring pipe, the non-woven geotextile 2 layers are wrapped outside the water inlet pipe section, and the gaps between the water inlet pipe section and the dam body drilling holes are filled with coarse sand reverse filter materials, so that the clogging of the pressure measuring pipe can be effectively prevented. The top end of the piezometric tube is plugged by a plug, and an inlet protective body is built at the tube opening, so that foreign matters can be effectively prevented from falling off, and the tube opening of the piezometric tube is damaged. When the seepage water level needs to be observed, the cover plate and the plug are opened, the seepage water level at the position of the pressure measuring pipe can be measured by utilizing an observation measuring tool, the seepage water levels at different parts of the section can be observed by utilizing a plurality of pressure measuring pipes of the same observation section, and data support is provided for calculating the seepage of the side slope and the stability of the side slope.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of a water inlet pipe section.
FIG. 3 is a top view of an inlet shield.
FIG. 4 is a view of the bottom of the piezometer tube.
Fig. 5 is a schematic structural diagram of the plug.
Fig. 6 is a top view of a plug.
Description of reference numerals: 1. drilling a dam body; 2. filtering the material; 3. bentonite balls; 4. a rubber ring; 5. a piezometric tube; 51. a conduit section; 52. a water inlet pipe section; 6. plugging with a thread; 7. a circular steel plate; 8. an inlet guard; 9. a cover plate; 10. drilling a hole in the steel pipe; 11. drilling a hole at the bottom; 12. a hollow channel.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.
As shown in fig. 1-6, the seepage observation system for the embankment and earth-rock dam comprises a piezometric pipe 5, a dam body drilling hole 1 and an inlet protection body 8. The pressure measuring pipe 5 is a galvanized steel pipe with the diameter of 50mm and is divided into a water inlet pipe section 52 and a pipe section 51. The pressure measuring pipe 5 penetrates into a dam body drilled hole 1 with the diameter of 130mm, which is punched on the dam body or the dike body in advance, the lower end of the pressure measuring pipe 5 is provided with a water inlet pipe section 52, and 6 steel pipe drilled holes 10 with the diameter of 8mm are uniformly distributed in the annular direction of the water inlet pipe section 52 and are arranged in a staggered mode in the longitudinal direction. And 2 layers of 200 g/square meter non-woven geotextile are wrapped outside the water inlet pipe section 52 and wound and fastened by 12# lead wires. And a gap between the water inlet pipe section 52 and the dam body drilled hole 1 with the diameter of 130mm is filled with a medium coarse sand filter material 2, and the particle size is 0.35-2 mm. And a gap between the pipe section 51 and the dam body drilling hole 1 is filled with an air-dried bentonite ball 3, and the bentonite ball 3 and the medium coarse sand filter material 2 are separated by a rubber ring 4. In order to prevent foreign matters from falling into the pressure measuring pipe 5, the pipe orifice at the top end is provided with a plug 6 which is connected with an inlet screw thread of the pressure measuring pipe 5, and a protective body 8 is built at the pipe orifice so as to prevent the pipe orifice from being damaged. The pipe bottom of the pressure measuring pipe 5 is sealed by a phi 66mm circular steel plate 7, a bottom sealing drill hole 11 is formed in the bottom of the circular steel plate, and the thickness of the steel plate is 4 mm.
The inlet protection body 8 is formed by building cement bricks, the inlet protection body 8 is built above the dam body drilling hole 1 and surrounds the periphery of the piezometer tube 5, a hollow groove 12 is formed in the inlet protection body 8, and a concrete prefabricated cover plate 9 is arranged above the hollow groove 12 for plugging.
When the seepage water level needs to be observed, the protective body cover plate 5 and the plug 6 are opened, the seepage water level at the position of the piezometric tube 5 can be measured by utilizing an observation metering tool, the seepage water levels at different parts of the section can be observed by utilizing a plurality of piezometric tubes 5 of the same observation section, and data support is provided for calculating the seepage of the side slope and the stability of the side slope.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (9)
1. The utility model provides a seepage flow observation system, its characterized in that, includes dam body drilling, pressure-measuring pipe and import protection body, the pressure-measuring pipe is placed in the dam body drilling, the import protection body is built by laying bricks or stones in dam body drilling top and is encircleed around the pressure-measuring pipe, be provided with the hollow cavity in the import protection body, the hollow cavity top is covered with the apron, the hollow cavity is arranged in on the pressure-measuring pipe top, the pressure-measuring pipe includes pipe section and water inlet pipe section from top to bottom, be equipped with hoop evenly distributed's steel pipe drilling on the water inlet pipe section, water inlet pipe section outsourcing non-woven geotextile, the gap between water inlet pipe section and the dam body drilling is filled the filter material, and the gap is filled the bentonite ball between pipe section and the dam body drilling, separates with the rubber circle between bentonite ball.
2. The seepage observation system of claim 1, wherein the steel pipe drill holes are circumferentially and uniformly distributed and longitudinally staggered.
3. The seepage observation system of claim 2, wherein the number of the steel pipe drilling rings is 6, the number of the non-woven geotextiles is two, and the non-woven geotextiles are tightly wound and tied by lead wires.
4. A seepage observation system according to claim 1, wherein the piezometer tube bottom is bottomed out with a circular steel plate, and the bottom of the circular steel plate is provided with a bottomed-out hole.
5. A seepage observation system according to claim 1, wherein the piezometric tube is provided with a plug at its tip.
6. A seepage observation system according to claim 5, wherein the plug is screwed to the inlet of the piezometer tube.
7. A seepage observation system according to claim 1, wherein the pressure measuring pipe is a galvanized steel pipe.
8. A seepage observation system according to claim 1 wherein the filter media is medium grit filter media.
9. The seepage observation system of claim 1, wherein the inlet protection body is constructed of cement bricks and the cover plate is a precast concrete cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920370082.7U CN209979443U (en) | 2019-03-22 | 2019-03-22 | Seepage observation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920370082.7U CN209979443U (en) | 2019-03-22 | 2019-03-22 | Seepage observation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209979443U true CN209979443U (en) | 2020-01-21 |
Family
ID=69255321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920370082.7U Expired - Fee Related CN209979443U (en) | 2019-03-22 | 2019-03-22 | Seepage observation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209979443U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788574A (en) * | 2023-02-07 | 2023-03-14 | 山东黄金矿业科技有限公司充填工程实验室分公司 | Gas filling cavity speculum type slurry observation device |
-
2019
- 2019-03-22 CN CN201920370082.7U patent/CN209979443U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788574A (en) * | 2023-02-07 | 2023-03-14 | 山东黄金矿业科技有限公司充填工程实验室分公司 | Gas filling cavity speculum type slurry observation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |