CN100402979C - Pipeline for monitoring dam panel deflection or internal deformation of dam-body - Google Patents

Pipeline for monitoring dam panel deflection or internal deformation of dam-body Download PDF

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Publication number
CN100402979C
CN100402979C CNB2005100808457A CN200510080845A CN100402979C CN 100402979 C CN100402979 C CN 100402979C CN B2005100808457 A CNB2005100808457 A CN B2005100808457A CN 200510080845 A CN200510080845 A CN 200510080845A CN 100402979 C CN100402979 C CN 100402979C
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China
Prior art keywords
dam
pipeline
monitoring
flange
corrugated tube
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Expired - Fee Related
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CNB2005100808457A
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CN1940473A (en
Inventor
孙贵平
孙役
杨启贵
蔡德所
卫炎
李昌彩
陈润发
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HUBEI QINGJIANG SHUIBUYA ENGINEERING CONSTRUCTION Co
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HUBEI QINGJIANG SHUIBUYA ENGINEERING CONSTRUCTION Co
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Priority to CNB2005100808457A priority Critical patent/CN100402979C/en
Publication of CN1940473A publication Critical patent/CN1940473A/en
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Abstract

A method for monitoring deflection of dam face plate and internal deformation of dam body by utilizing monitor pipe includes preburying monitor pipe in dam face plate on in dam body, placing movable measurement device at monitoring end of said pipe and using drawing unit to make it move in said pipe on uniform velocity mode to measure out initial data when said pipe is finished, placing movable measurement device in monitor pipe periodically for obtaining measured data and enabling to get deformation value by comparing said measured data with said initial data.

Description

The monitoring pipeline of dam face slab amount of deflection or dam body internal modification
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 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: provide a cover complete, detect the dam face slab amount of deflection of Underwater Engineering structural deformation or the monitoring pipeline of dam body internal modification with photoelectric technologies such as fiber-optics gyroscopes.
The technical scheme that the present invention solves the problems of the technologies described above employing is: the monitoring pipeline 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 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.
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, 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.
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 2Poor son, the upstream face top is arranged at the bedding material surface, lays the fines of 30 cm thicks then in poor son 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 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, 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, optical fiber instrument spiral shell instrument, 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 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 also have ready conditions to replenish therein under mobile devices such as fibre optic gyroscope monitoring case of successful;
(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 measuring 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 embeddingly in advance in dam face slab 2 have rigidity and retractility, inner-walls of duct is smooth shown in Fig. 1,2,3,5,6, 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 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, 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.
Monitoring pipeline 3 is that more piece roundy and straight steel pipe 7 is used the corrugated pipe connector sealed attachment.The monitoring pipe pipeline outer wall is equipped with a permanent magnet ring 8 for per 30 meters.Corrugated pipe connector is flanged 9 by other, flange 10, sealing 11, welding ring 12, sheath 13, corrugated tube 6, silk screen 14, interlayer 15, packed layer 16 and coupling bolt 17 are formed, flange 10 is welded on the two ends of corrugated tube 6 by welding ring 12, in addition flanged 9 are connected by coupling bolt 17 with the flange 10 of corrugated tube, the corrugated tube outer wall is with twine 14, welding ring 12 is equipped with sheath 13 with twine 14 connecting portions, and sheath 13 welds together with flange 10; Between corrugated tube 6 ripples interlayer 15 is housed, its inwall then is equipped with packed layer 16; Between the flanged and flange, sealing 11 is housed between flange and the corrugated tube at other.
Measurement mechanism 5 is by high-precision optical fiber gyro inertial navigation instrument, and their cylindrical dolly of magnetic inductor and loading is formed, 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 quartzy acceleration devices 22 of 3 fibre optic gyroscopes and digital signal processor 23.Fibre optic gyroscope, 3 quartzy acceleration devices 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 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 initial value monitoring, 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 in dam body: when dam embankment during to 2050 meters of design monitoring height, 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.
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 quartzy acceleration devices 22 of 3 fibre optic gyroscopes and digital signal processor 23.Fibre optic gyroscope, 3 quartzy acceleration devices 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 (3)

1. the monitoring pipeline of dam face slab amount of deflection or dam body internal modification, it is characterized in that: pipeline is embedded in dam face slab or the dam in advance, in pipeline, lay removable measurement mechanism, removable measurement mechanism makes its at the uniform velocity walking in pipeline by draw-gear or its power of providing for oneself, records primary data and Monitoring Data, and described pipeline has rigidity and retractility, inner-walls of duct is smooth, its internal diameter is 300~500mm, and pipeline is a more piece roundy and straight steel pipe, uses the corrugated pipe connector sealed attachment.
2. monitoring pipeline as claimed in claim 1, 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.
CNB2005100808457A 2004-01-17 2004-01-17 Pipeline for monitoring dam panel deflection or internal deformation of dam-body Expired - Fee Related CN100402979C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005100808457A CN100402979C (en) 2004-01-17 2004-01-17 Pipeline for monitoring dam panel deflection or internal deformation of dam-body

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Application Number Priority Date Filing Date Title
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Related Parent Applications (1)

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CNB2004100126769A Division 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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CN100402979C true CN100402979C (en) 2008-07-16

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102252646B (en) * 2011-04-15 2013-04-24 中国水利水电科学研究院 Dam and side slope three-dimensional continuous deformation monitoring system
CN103196416B (en) * 2013-03-17 2016-12-28 水利部交通运输部国家能源局南京水利科学研究院 The robot monitoring method of deformation inside dam and monitoring system
CN103528560A (en) * 2013-09-29 2014-01-22 中国水电顾问集团昆明勘测设计研究院有限公司 Inner deformation monitoring method and device for high earth-rock dam
CN103512546B (en) * 2013-09-29 2016-06-01 中国水电顾问集团昆明勘测设计研究院有限公司 A kind of earth rockfill dam internal modification noncontact formula monitoring method
CN105258885B (en) * 2015-11-06 2016-09-07 三峡大学 Magnetic inertial navigation monitoring system is seen in dam
CN105403191B (en) * 2015-11-06 2018-01-05 三峡大学 The automatic trailer system of inertial navigation monitoring device is seen in dam
CN109059845B (en) * 2018-06-29 2020-06-09 深圳大学 Method and system for monitoring internal deformation of face rockfill dam
CN112095575A (en) * 2020-09-14 2020-12-18 中国电建集团成都勘测设计研究院有限公司 Monitoring implementation method based on pipeline robot
CN112254864A (en) * 2020-10-16 2021-01-22 中国海洋大学 Device for in-situ real-time monitoring pore pressure of sediment and seabed deformation and distribution method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1201664A (en) * 1967-01-26 1970-08-12 Comp Generale Electricite A method of detecting and/or measuring the displacement or deformation of an object
CN86202440U (en) * 1986-04-12 1987-01-28 李修林 Kind of short pipe of movable connection with dismounting and mounting clearance
CN2354005Y (en) * 1998-09-24 1999-12-15 辽河油田银秋实业公司中远波纹管厂 Safety directly-buried type expansion section of metal corrugated pipe
CN1361373A (en) * 2000-12-29 2002-07-31 那清德 Sealed corrugated pipe for pipeline

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1201664A (en) * 1967-01-26 1970-08-12 Comp Generale Electricite A method of detecting and/or measuring the displacement or deformation of an object
CN86202440U (en) * 1986-04-12 1987-01-28 李修林 Kind of short pipe of movable connection with dismounting and mounting clearance
CN2354005Y (en) * 1998-09-24 1999-12-15 辽河油田银秋实业公司中远波纹管厂 Safety directly-buried type expansion section of metal corrugated pipe
CN1361373A (en) * 2000-12-29 2002-07-31 那清德 Sealed corrugated pipe for pipeline

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