CN201876257U - Dam foundation settlement meter for extra-large measuring range dam - Google Patents
Dam foundation settlement meter for extra-large measuring range dam Download PDFInfo
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- CN201876257U CN201876257U CN2010205647617U CN201020564761U CN201876257U CN 201876257 U CN201876257 U CN 201876257U CN 2010205647617 U CN2010205647617 U CN 2010205647617U CN 201020564761 U CN201020564761 U CN 201020564761U CN 201876257 U CN201876257 U CN 201876257U
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Abstract
The utility model relates to a dam foundation settlement meter for an extra-large measuring range dam. The dam foundation settlement meter is arranged in a dam covering layer; the surface of a dam foundation of a measured dam is provided with a settlement plate; and a base rock at the bottom of the dam is provided with an anchoring point which is connected with the settlement plate upwards by a connecting rod and a measurement sensor. The dam foundation settlement meter for the extra-large measuring range dam is characterized in that an electrical measurement type displacement sensor is adopted as the measurement sensor; one end of a potentiometer in the electrical measurement type displacement sensor is fixed with the settlement plate; and a sliding arm of the potentiometer of the electrical measurement type displacement sensor is fixed with the connecting rod. The dam foundation settlement meter for the extra-large measuring range dam is simple in structure, can be used for the dam foundation settlement observation for a face slab dam, an earth and rockfill dam and a concrete dam which are built on the covering layer, and is wide in application prospect. The dam foundation settlement meter for the extra-large measuring range dam meets the settlement monitoring requirements of a high dam and a dam foundation with higher compressibility, is very high in resolution ratio and accuracy, is good in stability and can be used for accurately, continuously and stably monitoring the dam foundation settlement of the high dam for a long time.
Description
Technical field
The utility model relates to a kind of surveying instrument, is specifically related to a kind of super large range dam dam foundation sedimentometer.
Background technology
Along with the development that Hydraulic and Hydro-Power Engineering is built, the increasing dam dam foundation is not excavated to basement rock and directly is built on the overlayer, dam foundation sedimentation and deformation size the stress of dam and distortion etc. are had very big influence.Therefore, for being built in supratectal dam, the monitoring of dam foundation sedimentation is one of most important safety monitoring project of dam.
The monitoring dam settlement is commonly used water-pipe type settlement instrument and electromagnetic type sedimentometer, but water-pipe type settlement instrument requires the measuring point elevation basic identical with the observation room elevation that is positioned at place, slope, dam downstream, and the elevation at dam foundation overlayer top all is positioned at below the downstream river course level of dead water usually, therefore, dam foundation sedimentation generally can not be adopted water-pipe type settlement instrument observation.The electromagnetic type sedimentometer need vertically cause dam crest from the dam foundation with sedimentation pipe, and influences the dam body construction, does not generally also select for use.Therefore need development to be applicable to that the dam foundation and instrument embedding do not influence the electric measuring type dam foundation sedimentometer of dam body construction.Traditional electric measuring type displacement transducer range is general all in 200mm in the prior art, and the dam settlement that generally should not be used for the relatively large journey of needs is observed.Do not find electric measuring type dam foundation sedimentometer that be suitable for, the super large range at present as yet.
Summary of the invention
The purpose of this utility model provides a kind of super large range dam dam foundation sedimentometer, and the maximum range of this super large range dam dam foundation sedimentometer can reach 900mm; Its instrument range can be chosen wantonly between 500mm to 900mm, every grade of 100mm.Can satisfy the bigger dam foundation settlement observation requirement of high dam and compressibility.Be that a kind of dam foundation and instrument embedding of being applicable to do not influence the electric measuring type dam foundation sedimentometer of dam body construction.
The technical scheme of finishing the foregoing invention task is that a kind of super large range dam dam foundation sedimentometer is provided with settlement plate on the dam foundation surface of institute's survey dam; On Ba Dijiyan, be provided with anchor point; This anchor point upwards is connected with settlement plate by connecting link and survey sensor, it is characterized in that, described survey sensor adopts the electric measuring type displacement transducer, and an end and the settlement plate of potentiometer are fixed in this electric measuring type displacement transducer; The cursor slide and the connecting link of potentiometer are fixed in this electric measuring type displacement transducer.Perhaps oppositely connection also can obtain same effect, that is: an end and the connecting link of this potentiometer are fixed; The cursor slide and the settlement plate of this potentiometer are fixed.This dam foundation sedimentometer is arranged in the dam overlayer.
Further improvement of the utility model has following prioritization scheme:
The outside of described potentiometer is provided with a telescopic seal protection pipe, and an end of described potentiometer is fixed in an end of this protection tube, and the cursor slide of described potentiometer is fixed on the other end of this protection tube, and an end and the settlement plate of this protection tube are fixed; The other end and the connecting link of this protection tube are fixed.
The structure and the principle of super large range dam dam foundation sedimentometer are:
With the basement rock is fixed point, be anchored on the basement rock by the end of boring sedimentometer, the other end is the settlement plate that places dam foundation surface, and the settlement plate below connects sedimentometer, and transmission bar big by a rigidity between sedimentometer and the basement rock, that temperature effect is less transmits sedimentation.Apparatus structure is seen Fig. 1.
Traditional electric measuring type displacement transducer range is general all in 200mm, and the dam settlement that generally should not be used for the relatively large journey of needs is observed.The range of displacement transducer is the great-scale displacement meter when 200mm-500mm, general applicable to weir or the less dam foundation settlement observation of compressibility.Through repeated comparison and screening and test, the utility model has selected maximum range can reach the super large span potentiometer formula displacement meter of 900mm, as the displacement transducer of dam foundation sedimentometer.Its instrument range can be chosen wantonly between 500mm to 900mm, every grade of 100mm.Can satisfy the bigger dam foundation settlement observation requirement of high dam and compressibility.Simultaneously, range also can correspondingly be produced at the great-scale displacement meter of 200mm-500mm.
The dam foundation settlement observation that super large range dam dam foundation sedimentometer of the present utility model is simple in structure, can be used for being built in supratectal face dam, earth and rockfill dam and concrete dam has a extensive future.
Specifically:
(1) super large range dam dam foundation sedimentometer of the present utility model is simple and reasonable for structure, can be used for the dam foundation settlement monitoring of all types of dams.
(2) super large range dam foundation sedimentometer range can satisfy high dam and the bigger dam foundation settlement monitoring requirement of compressibility.
(3) the calibration result shows, resolution, the precision of super large range dam foundation sedimentometer are all very high, and good stability can satisfy the observation requirement of dam foundation sedimentation.
(4) measured result shows, the engineering effect of super large range dam foundation sedimentometer is good, monitoring high dam foundation settling amount that can be long-term, accurate, continuous, stable.
Description of drawings
Fig. 1 is a dam foundation sedimentometer structural drawing.
Embodiment
Embodiment 1, super large range dam dam foundation sedimentometer, and with reference to Fig. 1: this dam foundation sedimentometer is arranged on 5 li of dam overlayers; Dam foundation surface at institute's survey dam is provided with settlement plate 1; On dam base rock 6, be provided with anchor point 4; This anchor point 4 upwards is connected with settlement plate 1 by connecting link 3 and survey sensor 2, described survey sensor 2 adopts the electric measuring type displacement transducer, the outside of this electric measuring type displacement transducer is provided with a telescopic seal protection pipe, an end of potentiometer is fixed in an end of this protection tube in the described electric measuring type displacement transducer, the cursor slide of described potentiometer is fixed on the other end of this protection tube, and an end and the settlement plate of this protection tube are fixed; The other end and the connecting link of this protection tube are fixed.
The key technical indexes and calibration test method
The key technical indexes
Range: 500mm, 600mm, 700mm, 800mm, 900mm
Resolution: 0.05%FS
Precision: 0.1%FS
Water-resistant pressure: 2MPa
Insulation resistance:〉50M Ω
The calibration test method
In order to detect the precision of displacement meter, having made displacement range specially is the super large range displacement meter calibration frame of 0-900mm.Every increase displacement 100mm during calibration measures once, measures three circulations altogether.
Claims (3)
1. a super large range dam dam foundation sedimentometer is provided with settlement plate on the dam foundation surface of institute's survey dam; On Ba Dijiyan, be provided with anchor point; This anchor point upwards is connected with settlement plate by connecting link and survey sensor, it is characterized in that, described survey sensor adopts the electric measuring type displacement transducer, and an end and the settlement plate of potentiometer are fixed in this electric measuring type displacement transducer; The cursor slide and the connecting link of this electric measuring type displacement transducer potentiometer are fixed.
2. super large range dam dam foundation sedimentometer according to claim 1, it is characterized in that, the outside of described potentiometer is provided with a telescopic seal protection pipe, one end of described potentiometer is fixed in an end of this protection tube, the cursor slide of described potentiometer is fixed on the other end of this protection tube, and an end and the settlement plate of this protection tube are fixed; The other end and the connecting link of this protection tube are fixed.
3. super large range dam dam foundation sedimentometer according to claim 1 and 2 is characterized in that, the range of described displacement transducer is provided with some levels, every grade of 100mm between 500mm to 900mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205647617U CN201876257U (en) | 2010-10-15 | 2010-10-15 | Dam foundation settlement meter for extra-large measuring range dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205647617U CN201876257U (en) | 2010-10-15 | 2010-10-15 | Dam foundation settlement meter for extra-large measuring range dam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876257U true CN201876257U (en) | 2011-06-22 |
Family
ID=44164173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205647617U Expired - Fee Related CN201876257U (en) | 2010-10-15 | 2010-10-15 | Dam foundation settlement meter for extra-large measuring range dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201876257U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278975A (en) * | 2011-07-29 | 2011-12-14 | 河海大学 | Non-contact soft soil large deformation displacement meter |
| CN102384739A (en) * | 2011-10-28 | 2012-03-21 | 西安欣源测控技术有限公司 | Displacement sensor of infilling body |
| CN104179165A (en) * | 2014-08-27 | 2014-12-03 | 成都市容德建筑劳务有限公司 | RFID-based (radio frequency identification) dam foundation deformation monitoring method |
| CN107063178A (en) * | 2017-04-21 | 2017-08-18 | 中水北方勘测设计研究有限责任公司 | A kind of concrete level mark for installing displacement transducer and its elevation observation and computational methods |
| CN108360584A (en) * | 2018-05-18 | 2018-08-03 | 五邑大学 | A kind of scalable measurement stake for building settlement monitoring |
-
2010
- 2010-10-15 CN CN2010205647617U patent/CN201876257U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278975A (en) * | 2011-07-29 | 2011-12-14 | 河海大学 | Non-contact soft soil large deformation displacement meter |
| CN102278975B (en) * | 2011-07-29 | 2013-06-05 | 河海大学 | Non-contact soft soil large deformation displacement meter |
| CN102384739A (en) * | 2011-10-28 | 2012-03-21 | 西安欣源测控技术有限公司 | Displacement sensor of infilling body |
| CN104179165A (en) * | 2014-08-27 | 2014-12-03 | 成都市容德建筑劳务有限公司 | RFID-based (radio frequency identification) dam foundation deformation monitoring method |
| CN107063178A (en) * | 2017-04-21 | 2017-08-18 | 中水北方勘测设计研究有限责任公司 | A kind of concrete level mark for installing displacement transducer and its elevation observation and computational methods |
| CN108360584A (en) * | 2018-05-18 | 2018-08-03 | 五邑大学 | A kind of scalable measurement stake for building settlement monitoring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20111015 |