CN1558181A - Monitoring method and device for faceplate deflection of large dam or internal deformation of dam body - Google Patents
Monitoring method and device for faceplate deflection of large dam or internal deformation of dam body Download PDFInfo
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- CN1558181A CN1558181A CNA2004100126769A CN200410012676A CN1558181A CN 1558181 A CN1558181 A CN 1558181A CN A2004100126769 A CNA2004100126769 A CN A2004100126769A CN 200410012676 A CN200410012676 A CN 200410012676A CN 1558181 A CN1558181 A CN 1558181A
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Abstract
The present invention is the monitoring method and apparatus for large dam faceplate deflection or inner deformation. A monitoring pipe of 300-500 mm inner diameter and with rigidity, retractility and smooth inner wall is embedded inside large dam faceplate or inside large dam in advance; the monitoring apparatus is made to walk inside the monitoring pipe to measure the initial data and subsequent data regularly; and the subsequent data are compared with the initial data to obtain the deformation data. The present invention can obtain great amount of continuous precise displacement data, and the movable measurement instrument may be multipurpose and may be updated constantly.
Description
Technical field
The present invention relates to the outside of buildings in a kind of civil engineering work and the device of interior of building level and vertical deformation, the monitoring method and the device thereof of dam body panel deflection or dam body internal modification in a kind of specifically Hydraulic and Hydro-Power Engineering.
Background technology
Understand dam practice of construction quality in order to grasp on the one hand in the rock construction, prepare necessary panel and dam body practical distortion data for the dam final acceptance of construction on the other hand, provide certain help for from now on rock design and construction simultaneously, carry out the monitoring of a large amount of construction time and runtime according to the needs that require of relevant specification of country.Because the restriction of technology and experience, present rock panel deflection still adopt fixed or the slidingtype tiltmeter is monitored, the classic method of drawing bracing cable formula horizontal displacement meter and water-pipe type settlement instrument monitoring dam body inner horizontal and perpendicular displacement is still adopted in the internal modification monitoring.Show that by practical engineering experience there are following many weak points in above-mentioned traditional monitoring method, and is specific as follows:
1, fixed or slidingtype tiltmeter monitoring panel deformation
(1) monitoring method of the panel deflection of rock monitoring design employing at present mostly is the method monitoring of burying fixed tiltmeter underground, its principle is that the corner of the panel relevant position that records according to fixing tiltmeter changes the amount of deflection of calculating panel measuring point place, start at some the measuring point for bottom, therefore this way often causes the cumulative errors of monitoring result bigger because instrument is more expensive and each instrument must be drawn a cable and can not be buried too many instrument underground easily;
(2) because fixed tiltmeter measuring point is to be interrupted to arrange,, then be difficult to transmit, the practical distortion situation of panel can't be measured, and be difficult to repair if middle some measuring points lost efficacy;
(3) and the slidingtype tiltmeter when panel deformation is big because the defective of instrument deadweight influence can't make instrument under to the bottommost of panel, therefore be difficult to the monitoring of realization panel deformation;
(4) be difficult to effectively realize construction time and runtime automatic monitoring;
(5) the instrument and equipment price is higher.
2, employing is drawn bracing cable formula horizontal displacement meter and water-pipe type settlement instrument monitoring dam body inner horizontal and perpendicular displacement (1) and is drawn bracing cable easy rupture failure of creeping under the overlength situation;
(2) water-pipe type settlement instrument viscous influence and tube wall drag effects because of water under the overlength situation is difficult to the water perfusion smoothly, and water outlet is also very difficult, also is easy to generate bubble simultaneously, influences actual measurement accuracy;
(3) bury underground because of the need ditching, construction is disturbed very big, especially under the overlength situation, very big to dam normal construction disturbing effect;
(4) also there is the problem of freezing winter in northern area, thereby can't normally measure winter;
(5) be difficult to effectively realize construction time and runtime automatic monitoring;
(6) the instrument and equipment price is higher
Continuous development along with new technology, adopt other advanced more technology such as photoelectric technology to carry out above-mentioned monitoring and become possibility, optical fiber sensing technology is used widely in other industry at present, especially the former fibre optic gyroscope that is used for the military project aspect now also can be applied to civilian installation, domestic had some units to carry out this respect applied research, as " detecting the method and the device of Underwater Engineering structural deformation based on fiber-optics gyroscope " (number of patent application: 02147772) disclose method and the device that a kind of fiber-optics gyroscope detects the Underwater Engineering structural deformation.This patented claim technology of going up is to utilize the characteristic of fibre optic gyroscope diagonal angle speed sensitive, the traction optical fiber gyroscope moves along measurand, the angular velocity that records is carried out integration obtain angle, calculate the movement locus of package unit then by formula, just the shape of measurand.The result that records to twice compares, and just can obtain the deformation values of measurand.Its device comprises that fibre optic gyroscope, signal receive storage unit, computer interface, linear velocity trans, shell.Though the above-mentioned technology of applying for a patent provides method and used measuring device part with optical fibre gyro technology for detection Underwater Engineering structural deformation, because the measurement of dam body panel and dam body inside also relates in panel and dam reasonable Arrangement pipeline how, to technical requirement, the monitoring piping laying technology of the performance of monitoring pipeline and shape and how to guarantee to make measurement mechanism in the monitoring pipeline, steadily to move and correction voluntarily, thereby finish all complicated factors such as whole measuring process, therefore need a whole set of complete measuring method and device thereof to implement.
The technical problem to be solved in the present invention is: a cover is complete, detect the Underwater Engineering structural deformation with photoelectric technologies such as fiber-optics gyroscopes Measurement of Dam panel deflection monitoring method and device thereof are provided.
The technical scheme that the present invention solves the problems of the technologies described above employing is: the monitoring method of rock panel deflection or dam body internal modification in a kind of Hydraulic and Hydro-Power Engineering, be to adopt the kinetic measurement mode that dam face slab amount of deflection or distortion are monitored, its concrete grammar is: embeddingly in advance in dam face slab or dam have rigidity and retractility, inner-walls of duct is smooth, its internal diameter is the monitoring pipeline of 300 ~ 500mm; After the monitoring pipeline forms, can begin to carry out the monitoring of initial value, in the monitoring side removable measurement mechanism is gone into to monitor pipeline, and make its at the uniform velocity walking in the monitoring pipeline by draw-gear or its power of providing for oneself, record primary data; Regularly removable measurement mechanism is inserted the monitoring pipeline again, data and the primary data that records compared, thereby draw deformation values.
The in advance embedding method of monitoring pipeline in panel is: in the dam body upstream monitoring section is set, to monitor the pipeline top on monitoring section is embedded in the dam toe board concrete, parallel with the dam body upstream face along the oblique laying of panel, embedding in advance have three kinds of modes: after building the concrete panel, will monitor the upstream face that pipeline is fixed on concrete slab by the supporting measure of necessity again; Or when the slab reinforcement skeleton forms, will monitor pipeline and also be fixed in wherein, again the casting concrete panel; Maybe will monitor pipeline and be embedded in the bedding material, and then the casting concrete panel.
The in advance embedding method of monitoring pipeline in dam body is: it is horizontally embedded in filling material that grooving will be monitored pipeline, protects with fines around the pipeline; According to the embedding monitoring pipeline of designing requirement length.
The concrete grammar of embedding monitoring pipeline is in dam body: when dam embankment to when height design monitoring, along continuous straight runs digs one 1 * 1 meter from dam upstream to downstream at dam body
2Trough, the upstream face top is arranged at the bedding material surface, lays the fines of 30 cm thicks then in trough bottom, then and will monitor pipe level and lay on it, uses the fines covering protection on every side at pipeline again, and carries out compaction treatment with small-sized rolling apparatus; When dam fills when surpassing 1.5 meters at in-service pipeline top, can carry out normal dam roller compaction construction.
Described monitoring pipeline is the effective corrugated pipe connector sealed attachment of more piece roundy and straight steel.
Described corrugated pipe connector is flanged by other, flange, sealing, welding ring, sheath, corrugated tube, silk screen, interlayer, packed layer and coupling bolt are formed, flange is welded on the two ends of corrugated tube by welding ring, other is flanged to be connected by coupling bolt with the flange of corrugated tube, the corrugated tube outer wall is with twine, welding ring and twine connecting portion are equipped with sheath, and sheath and welding ring and flange weld together; Between the corrugated tube ripple interlayer is housed, its inwall then is equipped with packed layer; Between the flanged and flange, between flange and the corrugated tube sealing is housed at other.
Described measurement mechanism comprises and will be mounted with their cylindrical dolly of angular velocity, Linear-speed measuring instrument and loading that the swing over compound rest of dolly is 250-400mm.
Described measurement mechanism also comprises the horizontal location instrument that is loaded in the dolly.
The angular velocity of described measurement mechanism and Linear-speed measuring instrument are high-precision optical fiber gyro inertial navigation instrument, and magnetic inductor is formed, and high-precision optical fiber gyro inertial navigation instrument is to be become by 2～3 fibre optic gyroscopes, 2～3 quartz accelerometers and bank of digital signal processors; The horizontal location instrument is a magnetic inductor, and fibre optic gyroscope, quartzy accelerator and inductor are passed to digital processing unit with the angular velocity signal, linear velocity signal and the horizontal signal that record.
The present invention is one group with 2～3 fibre optic gyroscopes, forms colourful attitude measuring system, the angle measurement deviation that causes with the deflection that may occur in the modifying factor measurement mechanism walking process.
(1) measurement accuracy of the present invention, stability and reliability can improve greatly;
(2) can obtain the displacement measurement achievement of a large amount of, successional and degree of precision;
(3) inlet part is the monitoring instrument orbit, simple in structure being easy to make, install, bury underground and safeguard, buries the constant tilt instrument underground as remedial measures even monitor also to have ready conditions under the unsuccessful situation to replenish therein at mobile monitoring devices such as fibre optic gyroscopes;
(4) surveying instrument is movable, can accomplish that " a tractor serves several purposes " simultaneously can also update himself performance according to technical progress;
(5) can realize construction time and runtime automatic monitoring;
(6) compare with the traditional monitoring method, the instrument and equipment expense is lower.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention
Fig. 2 monitors the pipeline structural representation for the present invention
Fig. 3 monitors two of pipeline structural representation for the present invention
Fig. 4 is a corrugated pipe connector structural representation of the present invention
Fig. 5 is a measurement mechanism structural representation of the present invention
Fig. 6 is a monitoring principle work synoptic diagram of the present invention
Fig. 7 is two of monitoring principle work synoptic diagram of the present invention
Embodiment
Embodiment 1: the monitoring method of dam face slab amount of deflection and equipment
Shown in Fig. 1,2,3,5,6, embeddingly in advance in dam face slab 2 have rigidity and retractility, inner-walls of duct is smooth, its internal diameter is the roundy and straight steel pipe monitoring pipeline 3 of 300mm; After the monitoring pipeline forms, can begin to carry out the monitoring of initial value, in the monitoring side removable measurement mechanism 5 is gone into to monitor pipeline, the windlass 4 that is located at pipeline opening makes its at the uniform velocity walking in the monitoring pipeline by the wire rope that is through on the removable measurement mechanism, records primary data; Regularly removable measurement mechanism is gone into to monitor pipeline again, data and the primary data that records compared, thereby draw deformation values.
The in advance embedding method of monitoring pipeline in panel is: in the dam body upstream monitoring section is set, to monitor the pipeline top on monitoring section is embedded in the dam toe board concrete, parallel with the dam body upstream face along the oblique laying of panel, embedding in advance have three kinds of modes: after building the concrete panel, will monitor the upstream face that pipeline is fixed on concrete slab by the supporting measure of necessity again; Or when the slab reinforcement skeleton forms, will monitor pipeline and also be fixed in wherein, again the casting concrete panel; Maybe will monitor pipeline and be embedded in the bedding material, and then the casting concrete panel.
Measurement mechanism 5 is made up of their cylindrical dolly of high-precision optical fiber gyro inertial navigation instrument, magnetic inductor and loading, and the swing over compound rest of dolly is 250mm, and two rollers 19 respectively are equipped with in dolly car body 18 both sides, and 2 of 1 rows, 4 rollers 20 of parallel two rows are equipped with in the bottom.
High-precision optical fiber gyro inertial navigation instrument is made up of 21,3 quartz accelerometers 22 of 3 fibre optic gyroscopes and digital signal processor 23.Fibre optic gyroscope, 3 quartz accelerometers and magnetic inductor 24 send angular velocity, linear velocity and the horizontal location signal that records to digital signal processor 23, and then draw measurement data with Computer Processing.
Embodiment 2: dam body internal strain monitoring method and device
Shown in Fig. 1,3,5,7, a kind of monitoring method of dam dam body internal modification, adopt the kinetic measurement mode that dam face slab amount of deflection or distortion are monitored, its concrete grammar is: embedding in advance in dam 1 have rigidity and a retractility, inner-walls of duct is smooth, and its internal diameter is the monitoring pipeline 3 of 300 ~ 500mm; After monitoring pipeline 3 forms, can begin to carry out the monitoring of initial value, in the monitoring side removable measurement mechanism is gone into to monitor pipeline, and make its at the uniform velocity walking in the monitoring pipeline by the power that it is provided for oneself, record primary data; Regularly removable measurement mechanism is inserted the monitoring pipeline again, data and the primary data that records compared, thereby draw deformation values.
The concrete grammar of embedding monitoring pipeline is in dam body: when dam embankment during to design monitoring height 20-50 rice, along continuous straight runs digs one 1 * 1 meter 2 trough at dam body from dam upstream to downstream, the upstream face top is arranged at the bedding material surface, lay the fines of 30 cm thicks then in the trough bottom, also will monitor pipe level then lays on it, around pipeline, use the fines covering protection again, and carry out compaction treatment with small-sized rolling apparatus; When dam fills when surpassing 1.5 meters at in-service pipeline top, can carry out normal dam roller compaction construction.
The monitoring pipeline is more piece roundy and straight steel pipe 7 corrugated tubes 6 seal weldings, and corrugated tube 6 inwall ripple places are filled and led up with the material with retractility.
Measurement mechanism 5 is made up of high-precision optical fiber gyro inertial navigation instrument and their cylindrical dolly of loading, and the swing over compound rest of dolly is 250mm, and two rollers 19 respectively are equipped with in dolly car body 18 both sides, and 2 of 1 rows, 4 rollers 20 of parallel two rows are equipped with in the bottom.
High-precision optical fiber gyro inertial navigation instrument is made up of 21,3 quartz accelerometers 22 of 3 fibre optic gyroscopes and digital signal processor 23.Fibre optic gyroscope, 3 quartz accelerometers and magnetic inductor 24 send angular velocity, linear velocity and the horizontal location signal that records to digital signal processor 23, and then draw measurement data with Computer Processing.
Claims (9)
1, the monitoring method of a kind of dam face slab amount of deflection or dam body internal modification, it is characterized in that described monitoring method is to adopt the kinetic measurement mode that dam face slab amount of deflection or distortion are monitored, its concrete grammar is: embedding in advance in dam face slab or dam have rigidity and a retractility.Inner-walls of duct is smooth, and its internal diameter is the monitoring pipeline of 300 ~ 500mm; After the monitoring pipeline forms, can begin to carry out the monitoring of initial value, in the monitoring side removable measurement mechanism is gone into to monitor pipeline, and make its at the uniform velocity walking in the monitoring pipeline by draw-gear or its power of providing for oneself, record primary data; Regularly removable measurement mechanism is inserted the monitoring pipeline again, data and the primary data that records compared, thereby draw deformation values.
2, a kind of monitoring method as claimed in claim 1, it is characterized in that monitoring the in advance embedding method of pipeline in panel is: in the dam body upstream monitoring section is set, to monitor the pipeline top on monitoring section is embedded in the dam toe board concrete, parallel with the dam body upstream face along the oblique laying of panel, embedding in advance have three kinds of modes: after building the concrete panel, will monitor the upstream face that pipeline is fixed on concrete slab by supporting measure again; Or when the slab reinforcement skeleton forms, will monitor pipeline and also be fixed in wherein, again the casting concrete panel; Maybe will monitor pipeline and be embedded in the bedding material, and then the casting concrete panel.
3, a kind of monitoring method as claimed in claim 1 is characterized in that monitoring the in advance embedding method of pipeline in dam body and is: it is horizontally embedded in filling material that grooving will be monitored pipeline, protects with fines around the pipeline.
4, monitoring method as claimed in claim 3, it is characterized in that described in dam body the concrete grammar of embedding monitoring pipeline be: when dam embankment to when height design monitoring, along continuous straight runs digs one 1 * 1 meter 2 trough at dam body from dam upstream to downstream, the upstream face top is arranged at the bedding material surface, lay the fines of 30 cm thicks then in the trough bottom, also will monitor pipe level then lays on it, around pipeline, use the fines covering protection again, and carry out compaction treatment with small-sized rolling apparatus; When dam fills when surpassing 1.5 meters at in-service pipeline top, can carry out normal dam roller compaction construction.
5, the used monitoring pipeline of claim 1 method is characterized in that described monitoring pipeline is a more piece circle straight tube corrugated pipe connector sealed attachment.
6, monitoring pipeline as claimed in claim 5, it is characterized in that described corrugated pipe connector is flanged by other, flange, sealing, welding ring, sheath, corrugated tube, silk screen, interlayer, packed layer and coupling bolt form, flange is welded on the two ends of corrugated tube by welding ring, other is flanged to be connected by coupling bolt with the flange of corrugated tube, the corrugated tube outer wall is with twine, welding ring and twine connecting portion are equipped with sheath, and sheath and welding ring and flange weld together; Between the corrugated tube ripple interlayer is housed, its inwall then is equipped with packed layer; Between the flanged and flange, between flange and the corrugated tube sealing is housed at other.
7, the used measurement mechanism of claim 1 method is characterized in that described measurement mechanism comprises will be mounted with their cylindrical dolly of angular velocity, Linear-speed measuring instrument and loading that the swing over compound rest of dolly is 250-400mm.
8, measurement mechanism as claimed in claim 7 is characterized in that described measurement mechanism also comprises the horizontal location instrument that is loaded in the dolly.
9, claim 7 or 8 described measurement mechanisms, the angular velocity and the Linear-speed measuring instrument that it is characterized in that described measurement mechanism are high-precision optical fiber gyro inertial navigation instrument, magnetic inductor is formed, and high-precision optical fiber gyro inertial navigation instrument is to be become by 2～3 fibre optic gyroscopes, 2～3 quartz accelerometers and bank of digital signal processors; The horizontal location instrument is a magnetic inductor, and fibre optic gyroscope, quartzy accelerator and inductor are passed to digital processing unit with the angular velocity signal, linear velocity signal and the horizontal signal that record.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100126769A CN100389300C (en) | 2004-01-17 | 2004-01-17 | Monitoring method and device for faceplate deflection of large dam or internal deformation of dam body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100126769A CN100389300C (en) | 2004-01-17 | 2004-01-17 | Monitoring method and device for faceplate deflection of large dam or internal deformation of dam body |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100808457A Division CN100402979C (en) | 2004-01-17 | 2004-01-17 | Pipeline for monitoring dam panel deflection or internal deformation of dam-body |
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| Publication Number | Publication Date |
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| CN1558181A true CN1558181A (en) | 2004-12-29 |
| CN100389300C CN100389300C (en) | 2008-05-21 |
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| CNB2004100126769A Expired - Fee Related CN100389300C (en) | 2004-01-17 | 2004-01-17 | Monitoring method and device for faceplate deflection of large dam or internal deformation of dam body |
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| CN101887257A (en) * | 2010-06-10 | 2010-11-17 | 浙江工业大学 | Safe and intelligent omnibearing monitoring device for dam |
| CN103196416A (en) * | 2013-03-17 | 2013-07-10 | 水利部交通运输部国家能源局南京水利科学研究院 | Robot monitoring method and robot monitoring system of deformation inside dam |
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| AT395659B (en) * | 1989-03-01 | 1993-02-25 | Steirische Wasserkraft U Elekt | ARRANGEMENT AND METHOD FOR DETERMINING CONSTRUCTION MOVEMENTS |
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| CN110285785A (en) * | 2019-07-22 | 2019-09-27 | 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 deflection monitoring device |
| CN110285785B (en) * | 2019-07-22 | 2024-03-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Rock-fill dam panel deflection monitoring devices |
| CN110274571A (en) * | 2019-07-30 | 2019-09-24 | 中国电建集团成都勘测设计研究院有限公司 | Monitoring system for rock-fill dams impervious body core-wall horizontal displacement deformation |
| CN110806192B (en) * | 2019-11-20 | 2020-12-01 | 武汉大学 | Method for monitoring internal deformation of high rock-fill dam |
| CN110806192A (en) * | 2019-11-20 | 2020-02-18 | 武汉大学 | Method for monitoring internal deformation of high rock-fill dam |
| CN110864662A (en) * | 2019-11-28 | 2020-03-06 | 武汉大学 | Method for monitoring deformation of dam body of high rock-fill dam |
| CN110849323A (en) * | 2019-12-12 | 2020-02-28 | 中国电建集团成都勘测设计研究院有限公司 | Telescopic settling tube, and settling deformation monitoring system and method |
| CN114812466A (en) * | 2022-05-24 | 2022-07-29 | 中国地质大学（武汉） | Device and method for monitoring continuous displacement of horizontal landslide |
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