CN100389300C - 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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- CN100389300C CN100389300C CNB2004100126769A CN200410012676A CN100389300C CN 100389300 C CN100389300 C CN 100389300C CN B2004100126769 A CNB2004100126769 A CN B2004100126769A CN 200410012676 A CN200410012676 A CN 200410012676A CN 100389300 C CN100389300 C CN 100389300C
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Abstract
The present invention relates to a monitoring method and a device for the large dam faceplate deflection or the internal deformation of the dam body. Firstly, a monitoring pipeline which has rigidity and elasticity is buried in a large dam faceplate or in a large dam in advance, wherein the inner wall of the pipeline is smooth, and the inner diameter of the pipeline is 300 to 500mm. Subsequently, a moveable measuring device is sent into the monitoring pipeline from a monitoring end of the monitoring pipeline to make the moveable measuring device walk in the monitoring pipeline in a uniform speed way so that the initial data is measured. Finally, the moveable measuring device is periodically sent to the monitoring pipeline, and the measured data is compared to the initial data so that the deformation value is obtained. The present invention can obtain numerous and continuous displacement measuring results with higher accuracy, and the running orbit of a monitoring device is the distance of the buried pipeline. In addition, the present invention has the advantages of simple structure and easy manufacture, installation, burying arrangement and maintenance; the measuring device is movable, and the present invention also has the advantage of one device with multifunction; simultaneously, the self-performance of the present invention can be continuously improved according to the technological progress; furthermore, the present invention can realize the purpose of automatically monitoring in the construction period and the operating period; compared with the traditional monitoring method, the present invention has lower equipment cost.
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 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, be that necessary panel and dam body practical distortion data are prepared in the final acceptance of construction of people dam on the other hand, be the design and construction of from now on rock simultaneously: certain help is provided, carries 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 my instrument underground easily;
(2) measuring point is to be interrupted to arrange because fixed survey is only poured, if middle a certain measuring point lost efficacy, then is difficult to transmit, and the practical distortion situation of panel can't be measured, and be difficult to repair;
(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, bracing cable formula horizontal displacement meter and water-pipe type settlement instrument monitoring dam body inner horizontal and perpendicular displacement are drawn in employing
(1) draw bracing cable easy rupture failure of creeping under the overlength situation:
(2) water-pipe type settlement instrument is difficult to the water perfusion smoothly in the viscous influence and the tube wall drag effects of overlength situation because of water, 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 force method and the device that a kind of fiber-optics gyroscope detects the Underwater Engineering structural deformation.This patented claim technology 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 balance in the monitoring pipeline 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 dam face slab amount of deflection or dam body internal modification monitoring method and device are provided.
The technical scheme that the present invention solves the problems of the technologies described above employing is: the monitoring method of dam face slab amount of 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 dam body internal modification 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 306～500mm; After the monitoring pipeline forms, can begin to carry out the monitoring of initial value, in the monitoring side removable monitoring device 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 monitoring device 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 not welded on the two ends of corrugated tube by welding, 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 monitoring device 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 monitoring device also comprises the horizontal location instrument that is loaded in the dolly.
The angular velocity of described monitoring device and Linear-speed measuring instrument are high-precision optical fiber gyro inertial navigation instrument, magnetic inductor is formed, 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, quartz accelerometer and magnetic 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 measured 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 displacement measurement achievement in a large amount of, successional and degree of precision;
(3) inlet part is that monitoring instrument orbit, simple in structure being easy to are made, install, bury underground and safeguarded, buries the constant tilt instrument underground as remedial measures even monitor also to have ready conditions under the unsuccessful situation therein to replenish at mobile devices such as fibre optic gyroscopes;
(4) monitoring 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 monitoring device 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 monitoring device 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 monitoring device, records primary data; Regularly removable monitoring device is gone into to monitor pipeline again, data and the initialization 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.
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 angle, 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 dam body internal modification 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 initial value monitoring, in the monitoring side removable monitoring device 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 monitoring device 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 in dam body: when dam embankment during to design monitoring height 20-50 rice, 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.
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.
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 (7)
1. the monitoring method 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 dam body internal modification 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 monitoring device 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 monitoring device is inserted the monitoring pipeline again, data and the primary data that records compared, thereby draw deformation values.
2. 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, the monitoring pipeline is fixed on the upstream face of concrete slab; 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. 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; According to the embedding monitoring pipeline of designing requirement length.
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 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.
5. the method for claim 1, it is characterized in that: wherein said monitoring device 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.
6. method as claimed in claim 5 is characterized in that: described monitoring device also comprises the horizontal location instrument that is loaded in the dolly.
7. as claim 5 or 6 described methods, it is characterized in that: the angular velocity of described monitoring device and Linear-speed measuring instrument are by high-precision optical fiber gyro inertial navigation instrument, magnetic inductor is formed, 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, quartz accelerometer and magnetic 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1558181A CN1558181A (en) | 2004-12-29 |
| CN100389300C true 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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| FR2841140B1 (en) * | 2002-06-24 | 2004-10-01 | Servier Lab | MICROCAPSULES FOR DELAYED AND CONTROLLED RELEASE OF PERINDOPRIL |
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| 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 |
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| 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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