CN110285785A - A kind of face-plate of rockfill dam deflection monitoring device - Google Patents
A kind of face-plate of rockfill dam deflection monitoring device Download PDFInfo
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- CN110285785A CN110285785A CN201910662676.XA CN201910662676A CN110285785A CN 110285785 A CN110285785 A CN 110285785A CN 201910662676 A CN201910662676 A CN 201910662676A CN 110285785 A CN110285785 A CN 110285785A
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- rockfill dam
- level device
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 16
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004458 analytical method Methods 0.000 abstract description 3
- 239000012141 concentrate Substances 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 description 9
- 239000013307 optical fiber Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
Abstract
The present invention provides a kind of face-plate of rockfill dam deflection monitoring devices, including leader cable；The leader cable sunkens cord below face-plate of rockfill dam surface and is in series with level device, and level device is fixed on fixed bracket, and fixed bracket is fixed on to be assisted in dented space made of pouring as prefabricated box.The present invention is using mode is secretly buried, and sensor is located in panel concrete, and, not by the direct effect of the bedding that bankets, library water, instrument serviceability rate can greatly improve for itself；It only needs 1~2 cable that the level device of all measuring points can be connected in series, then concentrates traction.Cable pulling work difficulty and workload are not only substantially reduced, but also under the premise of not influencing thickness of concrete cover, cable can be arranged along the downside of panel top bars, be conducive to the protection of cable；Site operation is convenient, installation is simple, and work, the those skilled in the art such as data acquisition, calculating analysis can quickly grasp, and economic serviceability is good, and application value is high.
Description
Technical field
The present invention relates to a kind of face-plate of rockfill dam deflection monitoring devices, belong to hydraulic and hydroelectric engineering field.
Background technique
Rock has good engineering adaptability and economy, is a kind of dam type being widely adopted.Panel heap
Masonry dam is mainly made of panel, toe board, bed course, transition zone, main rockfill area, secondary rockfill area, wherein panel is its important antiseepage
One of structure.In general, what is deformed between panel and rockfill is uncoordinated, can cause the cracking of panel, come to nothing, deflection deformation etc. is asked
Topic, influences the normal work of the entire seepage prevention system of dam, so that the safe operation steady in a long-term to dam constitutes a threat to.Therefore,
For the working condition for grasping panel, the deflection deformation of panel is monitored, work is necessary.
Panel deflection generally initially uses inclined-plane inclinometer to be monitored, but when deforming larger, probe can not surveyed
It is passed freely through in inclined tube, observation can not carry out.Moreover, deviational survey pipe construction is cumbersome, installation quality is not easy to guarantee, be difficult to realize certainly
Dynamicization, labor intensive and time.In addition, tiltedly inclinometer is the inclination angle for adapting to panel slope, it need to be by the accelerometer built in it
It rotates by a certain angle, causes it not can be carried out positive and negative survey self-correcting in wide-angle measurement, need to eliminate error by field calibration,
Working efficiency is low, and Result Precision is also undesirable.
The country is observed panel deflection in the level device that Tianshengqiao-I power station takes the lead in introducing Brazil, achieves
Beneficial effect.Later, many similar engineerings observe panel deflection using the method in panel surface arrangement level device successively, but
Be that many years effect of application is not ideal enough, main problem is: traditional approach level device is mounted on panel surface, and sensor housing is protected
Shield and use concrete enclosing, but bedding backfill and water storage after, the following instrument of bedding still easily damage failure, cause whole
Bar survey line is scrapped, and panel deflection value can not be calculated；Arrange that measuring point is more, and every instrument has a cable, bunchy after concentration
Cable size is big, is not easy to protect along panel surface or internal traction, and has certain influence to panel.
In recent years, some domestic engineerings use stationary slope level monitoring panel deflection deformation successively.With inclined-plane inclinometer
Compare, it is easy to automate, and can according to Structure Calculation achievement, by sensor arrangement in intended deformations position, for
Property is stronger.But needing to install multiple sensors along panel more can completely reflect panel deformation, and it is at high cost, when installation
The quality requirements such as the control of connection type, angle to instrument and connecting rod are high.But compared with surface layout level device, bedding is returned
It fills out and water storage influences it smaller, instrument survival rate is higher.
With the development of science and technology, designing unit also becomes in rockfill and panel in one's power for domestic some colleges and universities, Research Center
Shape monitoring aspect has done a large amount of test and exploration." the optical fiber sensing technology of high earth and rockfill dam deformation monitoring of Sichuan University's exploitation
With system " (application publication number CN105910545A), Shenzhen University exploitation a kind of " rock internal distortions monitoring method
And monitoring system " (application publication number CN109059845A), Co., Ltd, Chinese Chengdu survey and design research institute, electric construction group open
" DEFORMATION MONITORING SYSTEM and method for concrete face rockfill dam " (the application publication number CN109764823A) of hair all has
The function of monitoring panel amount of deflection, but still come with some shortcomings:
1) patented technology of above-mentioned Shen Qing Publication is feasible in principle, but practical application effect is unknown.For example Fibre Optical Sensor
Though technology is more advanced, from the point of view of hydraulic and hydroelectric engineering safety monitoring industry many years application effect, optical fiber easy quilt when laying
It destroys, measured value is easily disturbed, the light loss after long-time service is not easy to control, practicability, durability, stability and the reality of system
Demand has differences；Using pipe robot or optical fibre gyro in the presence of measurement route is not unique, line size is big and occupies sky
Between, pipeline material difference is big and the problems such as deformation.
2) optical fiber, pipe robot, the cost of optical fibre gyro are very high, and only a set of data acquisition equipment just needs to expend tens of
Ten thousand or even up to a million.Due to pipeline water pressure resistance, it is wear-resistant, corrosion-resistant etc. have particular/special requirement, pipeline needs to customize, valence
Lattice are high.Civilwork engineering quantity relevant to Embedment and installation is big, costly.
3) data calculation is complicated, and reprocessing analysis difficulty is big, requires the specialized capability of personnel high.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of face-plate of rockfill dam deflection monitoring device, the enrockment dam facing
Plate deflection monitoring device is sequentially connected in series the multiple MEMS level devices of arrangement by using the secretly mode of burying, to reach the change of monitoring panel amount of deflection
The purpose of shape.
The present invention is achieved by the following technical programs.
A kind of face-plate of rockfill dam deflection monitoring device provided by the invention, including leader cable；The leader cable is sunken cord in heap
Below masonry dam panel surface and it is in series with level device, level device is fixed on fixed bracket, and fixed bracket is fixed on by prefabricated box
In dented space made of auxiliary pours.
Dented space fills and leads up closing by slightly expanded concrete where the fixed bracket.
The prefabricated box is made of bottom plate, left plate, right side plate, preceding movable plate, rear movable plate, top plate, bottom plate, left side
Plate, right side plate, preceding movable plate, rear movable plate, top plate assembling constitute enclosed box body, have vertical slot to make on left plate and right side plate
Preceding movable plate and rear movable board are obtained in slot.
The dented space is then poured outside prefabricated box by the way that prefabricated box is placed on dented space corresponding position
And after filling and leading up, prefabricated box is removed and is constituted.
The tilt angle of the level device is consistent with the tilt angle of face-plate of rockfill dam.
It is covered and is closed by pitch after the level device is fixed on fixed bracket.
The fixed bracket is fixed in dented space by the first expansion bolt, the second expansion bolt, third expansion bolt,
First expansion bolt is fixed on support bracket fastened side wall, and the second expansion bolt, third expansion bolt are fixed on support bracket fastened bottom
Portion.
The level device is fixed on fixed bracket by fastening bolt.
The beneficial effects of the present invention are: using mode is secretly buried, sensor is located in panel concrete, itself is not banketed
The direct effect of bedding, library water, instrument serviceability rate can greatly improve；Only need 1~2 cable can be by the level device of all measuring points
It is connected in series, then concentrates traction.Cable pulling work difficulty and workload are not only substantially reduced, but also is not influencing to mix
Under the premise of solidifying protective soil layer thickness, cable can be arranged along the downside of panel top bars, be conducive to the protection of cable；It applies at scene
Work is convenient, installation is simple, and work, the those skilled in the art such as data acquisition, calculating analysis can quickly grasp, economic serviceability
Good, application value is high.
Detailed description of the invention
Fig. 1 is the mounting structure schematic diagram of prefabricated box in the present invention；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the structural schematic diagram of prefabricated box in Fig. 1；
Fig. 4 is support bracket fastened structural schematic diagram in Fig. 2；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the side view of Fig. 4.
In figure: 1- leader cable, the prefabricated box of 2-, 20- bottom plate, 21- left plate, 22- right side plate, movable plate before 23-, after 24-
Movable plate, 25- top plate, the fixed bracket of 3-, 33- fastening bolt, 4- level device, the first expansion bolt of 51-, the second expanding screw of 52-
Bolt, 53- third expansion bolt.
Specific embodiment
Be described further below technical solution of the present invention, but claimed range be not limited to it is described.
A kind of face-plate of rockfill dam deflection monitoring device as shown in Figures 1 to 6, including leader cable 1；The leader cable 1 buries
Line is below face-plate of rockfill dam surface and is in series with level device 4, and level device 4 is fixed on fixed bracket 3, and fixed bracket 3 is fixed
In the dented space made of being poured as prefabricated box 2 auxiliary.
The 3 place dented space of fixed bracket fills and leads up closing by slightly expanded concrete.
The prefabricated box 2 is by bottom plate 20, left plate 21, right side plate 22, preceding movable plate 23, rear movable plate 24,25 groups of top plate
At bottom plate 20, left plate 21, right side plate 22, preceding movable plate 23, rear movable plate 24, the assembling of top plate 25 constitute enclosed box body, left side
There is vertical slot that preceding movable plate 23 and rear movable plate 24 are installed in slot on plate 21 and right side plate 22.
The dented space is then poured outside prefabricated box 2 by the way that prefabricated box 2 is placed on dented space corresponding position
After building and filling and leading up, prefabricated box 2 is removed and is constituted.
The tilt angle of the level device 4 is consistent with the tilt angle of face-plate of rockfill dam.
It is covered and is closed by pitch after the level device 4 is fixed on fixed bracket 3.
The fixed bracket 3 is fixed on recess by the first expansion bolt 51, the second expansion bolt 52, third expansion bolt 53
In space, the first expansion bolt 51 is fixed on the side wall of fixed bracket 3, and the second expansion bolt 52, third expansion bolt 53 are fixed
In the bottom of fixed bracket 3.
The level device 4 is fixed on fixed bracket 3 by fastening bolt 33.
The present invention is during installation, first before concrete slab pours, first pre-buried leader cable 1 and prefabricated box 2, the prefabricated box
2 are located at the position that design arrangement has level device 4, and the prefabricated box 2 is fixed on slab reinforcement by tied silk, the prefabricated box 2
By bottom plate 20, left side plate 21,22, fore-aft travel plate 23,24, top plate 25 formed, the bottom plate 20, and left side plate 21,22 is preceding
Movable plate 23,24 is stainless steel material afterwards, and the top plate 25 is to tap frangible material customization.The left side plate 21,22
It is linked with the bottom plate 20 using hinge, stipulated that the left and right can only be inserted into toward inside activity, the fore-aft travel plate 23,24
In the catching groove reserved on side plate 21,22, then the top plate 25 is placed directly on the fore-aft travel plate 23,24, thus
Constitute a firm enclosure space.The leader cable 1 is whole cable, cannot be truncated when pre-buried, and should shift to an earlier date described pre-
About 0.5m is coiled in box 2 processed, then the prefabricated box 2 is filled up with cotton-wool, covers top plate 25.
After panel concrete pours, to concrete final set, the position for burying prefabricated box 2 is found, concrete is tapped, then strikes
Broken top plate 25 removes prefabricated box 2, can form a regular coagulation heatable adobe sleeping platform.Each face of coagulation heatable adobe sleeping platform is carried out at dabbing first
Then fixed bracket 3 is fixed on panel by the first expansion bolt 51, the second expansion bolt 52, third expansion bolt 53 by reason
On, it is ensured that it is reliable with panel stable connection, then tentatively connect level device 4 with fixed bracket 3, adjusts the angle of level device 4
Degree, can be tightened bolt 33 when the reading and the almost the same panel gradient of readout instrument measurement level device 4, then with drip
Level device 4 is completely enclosed on fixed bracket 3 by blueness.The cable of level device 4 is connected with pre-buried leader cable 1 and is placed in hole,
Hole is filled up using slightly expanded concrete after the reading of survey reading level device 4 is errorless.
Embodiment 1
With above scheme, installed using following steps:
Step A: according to the panel gradient, level device is customized, to carry out stringent inspection calibration after instrument arrival.
Step B: prefabricated box and fixed bracket are processed.
Step C: pre-buried leader cable and prefabricated box.Pay special attention to, leader cable along panel top bars underdrag, from low
Elevation is drawn toward elevation to panel.Leader cable is intended to coil 0.5m in advance in each prefabricated box.Prefabricated box binding is solid
Periodically, box top will be parallel with the gradient of panel and maintains an equal level substantially with panel surface, forbids to protrude from panel surface.In prefabricated box
Cotton-wool is clogged, prevents slurries when concreting from entering in box.
Step D: level device Embedment and installation.After concrete final set, knocks prefabricated box top plate open, take out prefabricated box.Prefabricated box
Removal method are as follows: first extract out fore-aft travel plate, then by left side plate toward inside receive, propose prefabricated box.It is right before fixed bracket
Each face in hole is intended to dabbing processing, when being conducive to subsequent fill concrete, the good combination of new-old concrete.Level device should not be direct
It is fixed on bracket, after should tentatively fixing, adjusts setting angle by continuously surveying reading level device reading, reach ability after requirement
Be tightened bolt.To reinforce the waterproof sealing of instrument and consolidating, level device is completely enclosed within fixed bracket using pitch
On.
Step E: the series connection of cable.The leader cable at the position is truncated, then carried respectively with level device two of both ends
Cable connection after the completion of connection, is placed in hole after should winding cable reel, then in the (traction to panel of the end of leader cable
At top) carry out survey reading, it is ensured that and reading is met the requirements, and otherwise should be buried again.
Step F: fill concrete.Above-mentioned five steps complete and confirm it is errorless after, i.e., available concrete carries out hole
Backfill.Pay special attention to: the coarse grain diameter aggregate in fill concrete should reject.Fill concrete can be properly added swelling agent, backfill
After floating processing is carried out to surface.
Step G: it successively works according to the Embedment and installation that above-mentioned six steps complete each measuring point level device, obtains base in time
Quasi- value, calculates panel deflection deformation.
The present invention only needs 1~2 cable that the level device of all measuring points can be connected in series, and then concentrates traction,
And sensor is located in panel concrete, and, not by the direct effect of the bedding that bankets, library water, instrument serviceability rate can be improved for itself
50%, overall economic efficiency comparing result is referring to table 1:
The technical economic benefit contrast table of table 1 present invention and the prior art
Claims (8)
1. a kind of face-plate of rockfill dam deflection monitoring device, including leader cable (1), it is characterised in that: the leader cable (1) sunken cord in
It below face-plate of rockfill dam surface and is in series with level device (4), level device (4) is fixed on fixed bracket (3), fixed bracket (3)
It is fixed in dented space made of being poured as prefabricated box (2) auxiliary.
2. face-plate of rockfill dam deflection monitoring device as described in claim 1, it is characterised in that: where the fixed bracket (3)
Dented space fills and leads up closing by slightly expanded concrete.
3. face-plate of rockfill dam deflection monitoring device as described in claim 1, it is characterised in that: the prefabricated box (2) is by bottom plate
(20), left plate (21), right side plate (22), preceding movable plate (23), rear movable plate (24), top plate (25) composition, bottom plate (20), a left side
Side plate (21), right side plate (22), preceding movable plate (23), rear movable plate (24), top plate (25) assembling constitute enclosed box body, left plate
(21) and on right side plate (22) there is vertical slot that preceding movable plate (23) and rear movable plate (24) are installed in slot.
4. face-plate of rockfill dam deflection monitoring device as described in claim 1, it is characterised in that: the dented space be pass through by
Prefabricated box (2) is placed on dented space corresponding position, and after then pouring and fill and lead up outside prefabricated box (2), prefabricated box (2) is torn open
Except composition.
5. face-plate of rockfill dam deflection monitoring device as described in claim 1, it is characterised in that: the inclination of the level device (4)
Angle is consistent with the tilt angle of face-plate of rockfill dam.
6. face-plate of rockfill dam deflection monitoring device as described in claim 1, it is characterised in that: the level device (4) is in fixation
It is covered and is closed by pitch after being fixed on bracket (3).
7. face-plate of rockfill dam deflection monitoring device as described in claim 1, it is characterised in that: the fixed bracket (3) is by
One expansion bolt (51), the second expansion bolt (52), third expansion bolt (53) are fixed in dented space, the first expansion bolt
(51) it is fixed on the side wall of fixed bracket (3), the second expansion bolt (52), third expansion bolt (53) are fixed on fixed bracket
(3) bottom.
8. face-plate of rockfill dam deflection monitoring device as described in claim 1, it is characterised in that: the level device (4) passes through tight
Fixing bolt (33) is fixed on fixed bracket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910662676.XA CN110285785B (en) | 2019-07-22 | 2019-07-22 | Rock-fill dam panel deflection monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910662676.XA CN110285785B (en) | 2019-07-22 | 2019-07-22 | Rock-fill dam panel deflection monitoring devices |
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| Publication Number | Publication Date |
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| CN110285785A true CN110285785A (en) | 2019-09-27 |
| CN110285785B CN110285785B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910662676.XA Active CN110285785B (en) | 2019-07-22 | 2019-07-22 | Rock-fill dam panel deflection monitoring devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558181A (en) * | 2004-01-17 | 2004-12-29 | 湖北清江水布垭工程建设公司 | Monitoring method and device for faceplate deflection of large dam or internal deformation of dam body |
| CN1558182A (en) * | 2004-01-17 | 2004-12-29 | 湖北清江水布垭工程建设公司 | Measuring system for faceplate deflection, internal horizontal and vertical deformation of dam body |
| CN204662373U (en) * | 2015-05-19 | 2015-09-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of deformation monitoring device that comes to nothing for rock |
| CN204788341U (en) * | 2015-07-16 | 2015-11-18 | 郑州双杰科技有限公司 | Dam warp continuous observation device and surveys structure based on MEMS array |
| CN105258885A (en) * | 2015-11-06 | 2016-01-20 | 三峡大学 | Introspection magnetic inertial navigation monitoring system for dam |
| CN205066745U (en) * | 2015-11-06 | 2016-03-02 | 三峡大学 | See settlement monitoring pipe in dam |
| CN107131862A (en) * | 2017-06-23 | 2017-09-05 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of face-plate of rockfill dam deformation monitoring device and construction method |
| CN210089677U (en) * | 2019-07-22 | 2020-02-18 | 中国电建集团贵阳勘测设计研究院有限公司 | Rock-fill dam panel amount of deflection monitoring devices |
-
2019
- 2019-07-22 CN CN201910662676.XA patent/CN110285785B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558181A (en) * | 2004-01-17 | 2004-12-29 | 湖北清江水布垭工程建设公司 | Monitoring method and device for faceplate deflection of large dam or internal deformation of dam body |
| CN1558182A (en) * | 2004-01-17 | 2004-12-29 | 湖北清江水布垭工程建设公司 | Measuring system for faceplate deflection, internal horizontal and vertical deformation of dam body |
| CN204662373U (en) * | 2015-05-19 | 2015-09-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of deformation monitoring device that comes to nothing for rock |
| CN204788341U (en) * | 2015-07-16 | 2015-11-18 | 郑州双杰科技有限公司 | Dam warp continuous observation device and surveys structure based on MEMS array |
| CN105258885A (en) * | 2015-11-06 | 2016-01-20 | 三峡大学 | Introspection magnetic inertial navigation monitoring system for dam |
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| CN210089677U (en) * | 2019-07-22 | 2020-02-18 | 中国电建集团贵阳勘测设计研究院有限公司 | Rock-fill dam panel amount of deflection monitoring devices |
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| CN110285785B (en) | 2024-03-19 |
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