CN204314017U - The device that dam seepage observation procedure switches mutually - Google Patents
The device that dam seepage observation procedure switches mutually Download PDFInfo
- Publication number
- CN204314017U CN204314017U CN201420804894.5U CN201420804894U CN204314017U CN 204314017 U CN204314017 U CN 204314017U CN 201420804894 U CN201420804894 U CN 201420804894U CN 204314017 U CN204314017 U CN 204314017U
- Authority
- CN
- China
- Prior art keywords
- observation
- dam
- diversion
- diversion trench
- 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.)
- Active
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model discloses the device that a kind of dam seepage observation procedure switches mutually, be made up of clamping plate and " V " type diversion diversion trench, Boards wall is bottom " V " type diversion diversion trench.Two pieces of frid angles in 90 ° of described " V " type diversion diversion trench.According to the change of water percolating capacity, the switching between triangle weir method and volumetric method two kinds of different observation procedures can be realized by this device, obtain accurate believable observation data, improve accuracy of observation, this device install and easy to use, simple to operate.Existing switching between triangle weir method and volumetric method two kinds of different observation procedures, obtains accurate believable observation data, improves accuracy of observation, and this device is installed and easy to use, simple to operate.
Description
Technical field
The utility model belongs to the device that dam infiltration discharge observation field, particularly dam seepage observation procedure switch mutually.
Background technology
After concrete gravity dam builds up, under the water-head effect of Shui Ba upstream and downstream, storehouse, the crack in the dam foundation and dam abutment rock, the soil body, hole, shatter belt or karst passage are to the phenomenon of dam downstream leakage.Seepage through the dam foundation claims leakage of dam foundation, and the seepage through dam abutment claims leakage around dam.
Due to the dam foundation with dam abutment one is shorter than the penetration route in other areas with underground water in rock, the soil body, gradient is large, so the dam foundation and dam abutment rock, infiltration capacity in soil body unit width are local larger than all the other of reservoir area.Meanwhile, when storehouse water is along the crack in the dam foundation and Rock mass of dam abutment or shatter belt seepage, seepage pressure can be produced.Normal osmosis pressure (uplift pressure) on dam foundation possibility slipping plane will make the Normal stress on possibility slipping plane reduce, thus also reduce the skid resistance produced by Normal stress.Side direction seepage pressure in Rock mass of dam abutment and the normal osmosis pressure on possibility slipping plane, then make the lateral thrust of Rock mass of dam abutment increase.This is all unfavorable to the stability of slope in the dam foundation, dam abutment and downstream.In addition, dam district seepage also can soften weak intercalated layer, fault belt in rock mass in dam area, or produces the phenomenons such as erosion (piping) of diving, and thus reduces bearing capacity and the skid resistance of the dam foundation or Rock mass of dam abutment.Dam district seepage also may the arable land of downstream, submergence dam broadness or residential area.Therefore, seepage of dam discharge observation is a part very important in dam observation, higher to the accuracy requirement of measuring, and the data variation rule of leakage provides the most direct data for the burn into stable case studying dam foundation.
Existing use triangle weir method measures seepage flow, and as depicted in figs. 1 and 2, triangle weir plate is arranged on gallery and leads in the collecting gutter in sump direction, and under design weir, the depth of water is lower than crest of weir, causes the free overflow of crest of weir.In order to obtain observing buoy accurately, triangle weir plate need be vertical with inflow direction, and uprightly.Triangle weir plate adopts corrosion resistant plate to make, and flat smooth is answered on surface, and crest of weir is made 45° angle in edge downstream.The water gauge of weir is located at crest of weir upstream, and be 3 ~ 5 times of weir heads with crest of weir distance, scale label is to millimeter (mm).
Specify according in " concrete dam safety monitoring technology specification " (DL/T5178-2003) 8.3.6, it is 1L/s ~ 701L/s that triangle weir method is only applicable to flow, and volumetric method is only applicable to flow is less than 1L/s.When flow is less than 1L/s, according to the regulation of " technical manual ", must triangle weir method be changed into volumetric method, to improve accuracy of observation.Volumetric method principle is very simple, and be exactly the percolating water volume in observation 10s, during specifying measurement, the filling time should not be less than 10s, observes the numerical value between the measured value of twice gained must not be greater than 5% of mean value.
Summary of the invention
The technical problems to be solved in the utility model is to provide the device that a kind of dam seepage observation procedure switches mutually, according to the change of water percolating capacity, the switching between triangle weir method and volumetric method two kinds of different observation procedures can be realized by this device, obtain accurate believable observation data, improve accuracy of observation, this device install and easy to use, simple to operate.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
The device that dam seepage observation procedure switches mutually, primarily of clamping plate and " V " type diversion diversion trench composition, Boards wall is bottom " V " type diversion diversion trench.
Two pieces of frids of described " V " type diversion diversion trench at an angle of 90.
The utility model has the advantage of:
According to the change of water percolating capacity, the switching between triangle weir method and volumetric method two kinds of different observation procedures can be realized by this device, obtain accurate believable observation data, improve accuracy of observation, this device install and easy to use, simple to operate.
Accompanying drawing explanation
Fig. 1 is the diagram of conventional triangle weir method observation dam seepage;
Fig. 2 is the triangle weir plate scheme of installation in Fig. 1;
Fig. 3 is the structural representation of the utility model device for volumetric method observation dam seepage;
Fig. 4 is switching device shifter behaviour in service schematic diagram of the present utility model;
In figure: 1: dam body, 2: gallery, 3: triangle weir plate, 4: water gauge, 5: collecting gutter, 7: clamping plate, 8: diversion diversion trench, 9: measuring container.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 3, the device that a kind of dam seepage observation procedure switches mutually, form primarily of clamping plate 7 and " V " type diversion diversion trench 8, clamping plate 7 are fixed on bottom " V " type diversion diversion trench 8 structure of the present utility model.Two pieces of frids of described " V " type diversion diversion trench 8 at an angle of 90.
As shown in Figure 2, triangle weir plate 3 is arranged on the collecting gutter 5 between gallery 2 and dam body 1.When seepage flow flow is less than 1L/s, as shown in Figure 4, the clamping plate 7 of apparatus of the present invention are clipped on triangle weir plate 3, after diversion diversion trench 8 diversion to measuring container 9, use volumetric method to calculate leakage; When seepage flow flow is greater than 1L/s, as shown in Figure 1, apparatus of the present invention are taken away, directly measure weir head with water gauge 4, use triangle weir method to calculate leakage.Apparatus of the present invention are very easy to use, switch quick.
Claims (2)
1. the device that mutually switches of dam seepage observation procedure, is characterized in that, primarily of clamping plate and " V " type diversion diversion trench composition, Boards wall is bottom " V " type diversion diversion trench.
2. the device that mutually switches of dam seepage observation procedure according to claim 1, it is characterized in that, two pieces of frids of described " V " type diversion diversion trench at an angle of 90.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804894.5U CN204314017U (en) | 2014-12-17 | 2014-12-17 | The device that dam seepage observation procedure switches mutually |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804894.5U CN204314017U (en) | 2014-12-17 | 2014-12-17 | The device that dam seepage observation procedure switches mutually |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204314017U true CN204314017U (en) | 2015-05-06 |
Family
ID=53136324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420804894.5U Active CN204314017U (en) | 2014-12-17 | 2014-12-17 | The device that dam seepage observation procedure switches mutually |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204314017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758650A (en) * | 2021-06-28 | 2021-12-07 | 杭州嘉禧科技有限公司 | Dam leakage amount detection system and detection method thereof |
-
2014
- 2014-12-17 CN CN201420804894.5U patent/CN204314017U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758650A (en) * | 2021-06-28 | 2021-12-07 | 杭州嘉禧科技有限公司 | Dam leakage amount detection system and detection method thereof |
| CN113758650B (en) * | 2021-06-28 | 2024-01-23 | 杭州嘉禧科技有限公司 | Dyke leakage detection system and detection method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203965428U (en) | Native test unit is flowed in a kind of piping | |
| CN101763765A (en) | Simulated experiment device of infiltration and seepage | |
| CN104569341A (en) | Vacuum preloading and electroosmosis combined testing device and vacuum preloading and electroosmosis combined testing method | |
| CN205102879U (en) | Weir of simultaneous observation hillside surface runoff and interflow | |
| CN203824878U (en) | Test device for simulating seepage prevention of embankment foundation engineering soil | |
| CN105136072B (en) | A kind of Tunnel Lining Cracks depth measurement method and measurement apparatus | |
| CN106202771A (en) | A kind of viscous mud-flow blocks up river computational methods and application thereof | |
| CN202141482U (en) | Flow measuring device for forest areas | |
| CN113378402A (en) | Method for detecting leakage of deep covering layer riverbed dam | |
| CN204314017U (en) | The device that dam seepage observation procedure switches mutually | |
| CN102539478A (en) | Method for continuous detection of high polymer impermeable wall | |
| CN204314190U (en) | The vertical osmoscope of geotextile | |
| CN206339363U (en) | A kind of simple underground structure Analysis of Buoyancy model test apparatus | |
| CN202177708U (en) | Hillside point rainfall runoff measuring instrument | |
| CN204612703U (en) | A kind of seepage monitoring device of seepage monitoring district | |
| CN110274658A (en) | A kind of hydroenergy storage station ice condition supervising device and method | |
| CN105133549A (en) | Triangular measurement weir | |
| CN205228873U (en) | Floating runoff sediment load sampling is dark section water inlet device entirely | |
| CN110468774B (en) | Ice water two-phase flow water delivery channel gate section ice plug prevention and control method | |
| CN204514436U (en) | Water bunker level display | |
| CN103134643B (en) | A kind of detection method of stiling basin bottom leaky position | |
| CN204253015U (en) | A kind of water supply well disturbance rejection liquid level monitor | |
| CN102768050A (en) | Full-automatic small-watershed three-stage flow measurement device and application method thereof | |
| CN204142334U (en) | Hydraulic engineering small-sized river course wind wave prevention water-level measuring post | |
| CN110243691A (en) | A kind of test macro and method of antiseepage composite geo-membrane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |