CN103821187A - Dam foundation deformation depth monitoring method - Google Patents
Dam foundation deformation depth monitoring method Download PDFInfo
- Publication number
- CN103821187A CN103821187A CN201410070587.3A CN201410070587A CN103821187A CN 103821187 A CN103821187 A CN 103821187A CN 201410070587 A CN201410070587 A CN 201410070587A CN 103821187 A CN103821187 A CN 103821187A
- Authority
- CN
- China
- Prior art keywords
- dam
- depth
- dam foundation
- foundation
- deformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Bridges Or Land Bridges (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention provides a dam foundation deformation depth monitoring method. (1) three inverted plumb line measuring instruments of different depths are vertically and downwards arranged in a dam body observation room arranged at a dam foundation monitoring position, and the plumb line depths are between 10% and 15% of the dam height; (2) through the monitoring results of the inverted plumb lines of different depths on the dam foundation, a calculation model of plumb line depths and deformation is built, so that deformation of different depths of the dam foundation is calculated, and the theoretical maximum deformation of the dam foundation is calculated at the same time; (3) the ratio between the deformation of different depths of the dam foundation and the theoretical maximum deformation of the dam foundation is calculated, and when the ratio reaches 98%, the corresponding depth is the deformation depth of the dam foundation. The inverted plumb lines of different depths are arranged on the dam foundation, the calculation model of the plumb line depth and the deformation is built, and therefore the deformation depth of the dam foundation is calculated, and the problem that an instrument and method for monitoring dam foundation deformation depth do not exist is solved.
Description
Technical field
The present invention relates to hydroelectric project technical field, is a kind of dam foundation deforming depth monitoring method specifically.
Background technology
China's hydroelectric development is in recent years particularly rapid, build successively as the large storehouse of a collection of high dam of representative take Three Gorges Dam (height of dam 181m), Jinsha jiang River xiluodu arch dam (height of dam 285.5m), Lancang River Xiaowan Arch dam (height of dam 294.5m) etc., along with the continuous increase of height of dam and water ballast(ing), more and more be concerned about the load that produces after the dam retaining depth of interaction at the dam foundation, i.e. dam foundation deforming depth problem.
Be height of dam according to result of calculation dam foundation deforming depths such as finite elements 2～3 times, for 200m and even 300m level high dam, its depth of interaction can reach 600～1000m, therefore traditional monitoring method can not meet the demands, need to study a kind of monitoring instrument and method that can solve high dam foundation deforming depth.
Summary of the invention
The object of this invention is to provide a kind of dam foundation deforming depth monitoring method, to solve a difficult problem for high dam foundation deforming depth monitoring.
Technical scheme of the present invention is:
1) the inverted plumb line measuring instrument of 3 different depths is set in the dam body observation of arranging at dam foundation monitoring position straight down, and the vertical line degree of depth is height of dam between 10%～50%;
2) by the monitoring result of dam foundation different depth inverted plumb line, set up the computation model of the vertical line degree of depth and deflection, the distortion of calculating dam foundation different depth with this calculates the theoretical maximum deformation quantity of the dam foundation simultaneously;
3) ratio of the distortion of calculating dam foundation different depth and the theoretical maximum deformation quantity of the dam foundation, in the time that ratio reaches 98%, the corresponding degree of depth is dam foundation deforming depth.
Wherein I inverted plumb line length is height of dam 10%, II inverted plumb line length is height of dam 30%, III inverted plumb line length is height of dam 50%.
The present invention, by arranging the inverted plumb line of different depth at the dam foundation, sets up the computation model of the vertical line degree of depth and deflection, thereby calculating dam foundation deforming depth has successfully solved dam foundation deforming depth and there is no the problem of monitoring instrument and method.
Advantage of the present invention is only need arrange at the dam foundation vertical line of 0.1～0.5 times of height of dam length, can monitor the dam foundation deforming depth of 2～3 times of heights of dam, thereby reduces greatly drilling depth and reduce bore process, and the monitoring of dam foundation deforming depth is achieved.
Accompanying drawing explanation
Fig. 1 is dam foundation deforming depth monitoring instrument schematic diagram of the present invention.
Fig. 2 is certain arch dam 22 in embodiment
#monolith is apart from dam foundation deforming depth and corresponding deformation values graph of relation.
In figure: 1-dam body, between the observation of 2-dam body, 3-dam body gallery, the 4-dam foundation, 5-I inverted plumb line, 6-II inverted plumb line, 7-III inverted plumb line.
The specific embodiment
Dam foundation deforming depth monitoring instrument of the present invention, as shown in Figure 1, in dam observation, 3 inverted plumb lines 5,6,7 that the degree of depth is different are arranged in boring straight down, the degree of depth is height of dam between 10%～50%.Wherein I inverted plumb line length is height of dam 10%, II inverted plumb line length is height of dam 30%, III inverted plumb line length is height of dam 50%.
The regularity of distribution according to inverted plumb line deflection along different depth, set up correlation computations pattern function:
Wherein: the distortion that y-different depth is corresponding, x-apart from the dam foundation degree of depth, k1, k2-undetermined coefficient
Monitoring Result according to 3 inverted plumb lines: No. 1 inverted plumb line (x1, y1), No. 2 inverted plumb line (x2, y2), No. 3 inverted plumb line (x3, y3), adopt nonlinear fitting to calculate k1, k2, set up the computing function of vertical line degree of depth x and deflection y, by differentiate can calculate the theoretical maximum deformation quantity y of the dam foundation to function y
max.
Calculate dam foundation different depth x
icorresponding distortion y
iwith the theoretical maximum deformation quantity y of the dam foundation
maxratio cc=y
i/ y
max, corresponding degree of depth x in the time of α=98%
ithink dam foundation deforming depth.
Certain following engineering be example the present invention is further illustrated, but protection scope of the present invention is not subject to the restriction of these examples.
Embodiment:
No. 22 monoliths of certain Method of Arch Dam Foundation are furnished with C4-22-IP-01, C4-22-IP-02, the distortion of tri-measuring point monitoring Method of Arch Dam Foundation different depths of C4-22-IP-03, according to Method of Arch Dam Foundation different depth distortion achievement, the relation function of Nonlinear Quasi fastening deformation and the dam foundation degree of depth is:
The distortion that y-different depth is corresponding, x-apart from the dam foundation degree of depth.
To function
differentiate, 22
#monolith is y apart from foundation plane measuring point along with the degree of depth increases the extreme value of cumulative deformation
max=9.508810055mm.
The distortion of table 1 foundation plane different depth accounts for total deformation (ymax=9.508810055) percentage
| Foundation depth (m) | Distortion (mm) | Account for the percentage of full distortion |
| 80 | 8.611558738 | 90.564 |
| 120 | 8.891212842 | 93.505 |
| 160 | 9.037933781 | 95.048 |
| 200 | 9.128362565 | 95.999 |
| 240 | 9.189599301 | 96.643 |
| 280 | 9.233910356 | 97.109 |
| 320 | 9.267381368 | 97.461 |
| 360 | 9.293625683 | 97.737 |
| 400 | 9.314735242 | 97.959 |
| 408.5 | 9.318633854 | 98 |
From Fig. 2 and table 1, can find out, in the time reaching 408.5m apart from the foundation plane measuring point degree of depth, 22# monolith dam foundation cumulative deformation accounts for 98.00% of total deformation, thinks that the dam foundation deformation effect degree of depth is 408.5m.
Claims (2)
1. a dam foundation deforming depth monitor method, is characterized in that being carried out as follows:
1) the inverted plumb line measuring instrument of 3 different depths is set in the dam body observation of arranging at dam foundation monitoring position straight down, and the vertical line degree of depth is height of dam between 10%～50%;
2) by the monitoring result of dam foundation different depth inverted plumb line, set up the computation model of the vertical line degree of depth and deflection, the distortion of calculating dam foundation different depth with this calculates the theoretical maximum deformation quantity of the dam foundation simultaneously;
3) ratio of the distortion of calculating dam foundation different depth and the theoretical maximum deformation quantity of the dam foundation, in the time that ratio reaches 98%, the corresponding degree of depth is dam foundation deforming depth.
2. according to claim 1 dam foundation deforming depth monitor method, it is characterized in that in the inverted plumb line measuring instrument of 3 described different depths that I inverted plumb line length is height of dam 10%, II inverted plumb line length is height of dam 30%, III inverted plumb line length is height of dam 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410070587.3A CN103821187B (en) | 2014-02-28 | 2014-02-28 | Dam foundation deformation depth monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410070587.3A CN103821187B (en) | 2014-02-28 | 2014-02-28 | Dam foundation deformation depth monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103821187A true CN103821187A (en) | 2014-05-28 |
| CN103821187B CN103821187B (en) | 2015-08-05 |
Family
ID=50756454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410070587.3A Active CN103821187B (en) | 2014-02-28 | 2014-02-28 | Dam foundation deformation depth monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103821187B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104792296A (en) * | 2015-03-30 | 2015-07-22 | 中国电建集团昆明勘测设计研究院有限公司 | Method for monitoring influence of hydropower station reservoir plate deformation on dam |
| CN113251987A (en) * | 2021-04-28 | 2021-08-13 | 中国水利水电科学研究院 | Early-stage dumping deformation monitoring system and method for construction of concrete high arch dam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10183659A (en) * | 1996-12-24 | 1998-07-14 | Tokyo Gas Co Ltd | Evaluation system and method for pile-foundation |
| CN101016733A (en) * | 2007-01-08 | 2007-08-15 | 中铁西北科学研究院有限公司 | Multiple points settlement observation method and device therefor |
| RU2378457C1 (en) * | 2008-11-19 | 2010-01-10 | Институт Механики Сплошных Сред Уральского Отделения Российской Академии Наук | Method for monitoring of building under action of disturbances from displacement of its foundation |
| CN103541376A (en) * | 2013-10-10 | 2014-01-29 | 金川集团股份有限公司 | Foundation deformation prediction method for coal mining subsidence area foundation under condition of repeated mining |
-
2014
- 2014-02-28 CN CN201410070587.3A patent/CN103821187B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10183659A (en) * | 1996-12-24 | 1998-07-14 | Tokyo Gas Co Ltd | Evaluation system and method for pile-foundation |
| CN101016733A (en) * | 2007-01-08 | 2007-08-15 | 中铁西北科学研究院有限公司 | Multiple points settlement observation method and device therefor |
| RU2378457C1 (en) * | 2008-11-19 | 2010-01-10 | Институт Механики Сплошных Сред Уральского Отделения Российской Академии Наук | Method for monitoring of building under action of disturbances from displacement of its foundation |
| CN103541376A (en) * | 2013-10-10 | 2014-01-29 | 金川集团股份有限公司 | Foundation deformation prediction method for coal mining subsidence area foundation under condition of repeated mining |
Non-Patent Citations (1)
| Title |
|---|
| 古力米热: "《大坝倒垂线安装及其在初次蓄水观测中的应用》", 《人民长江》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104792296A (en) * | 2015-03-30 | 2015-07-22 | 中国电建集团昆明勘测设计研究院有限公司 | Method for monitoring influence of hydropower station reservoir plate deformation on dam |
| CN113251987A (en) * | 2021-04-28 | 2021-08-13 | 中国水利水电科学研究院 | Early-stage dumping deformation monitoring system and method for construction of concrete high arch dam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103821187B (en) | 2015-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102322071B (en) | Universal base structure of main transformer of 220kV substation | |
| CN103821187B (en) | Dam foundation deformation depth monitoring method | |
| CN204881460U (en) | Underground drainage pipe measuring equipment | |
| CN103425054A (en) | Electric power tunnel construction control method based on digitization | |
| CN101929857B (en) | Method for measuring slope of tower-type building | |
| CN203705435U (en) | Surface subsidence simulation test device | |
| CN105157675A (en) | Ground settlement observation device and method using siphon method | |
| CN107167188A (en) | A kind of method applied to rectangular open channel flow measurement | |
| CN204753558U (en) | Foundation ditch horizontal displacement monitoring devices | |
| CN103031863B (en) | Multisequencing horizontal stress release aperture combines correcting method with heap lotus supercharging and consolidation slip casting | |
| CN203924143U (en) | A kind of dam foundation deforming depth monitoring instrument | |
| CN105363833B (en) | A kind of steel pipes with straight prebending process online test method | |
| CN202164623U (en) | Universal foundation structure of 220 kV transformer substation main transformer | |
| CN103499298B (en) | A kind of laser collimation in vacuum line displacement measuring device end points absolute displacement correcting method | |
| CN105701360A (en) | Arid region carbon flux estimation method based on box type method and taking precipitation influence into consideration | |
| CN105300560A (en) | Reservoir dam water inlet water temperature observation system | |
| CN205079833U (en) | Air -cooled ash bucket charge level indicator | |
| CN204570051U (en) | A kind of stainless steel tube fast acid cleaning device | |
| CN204679663U (en) | A kind of weir case | |
| CN206556647U (en) | A kind of geotechnical engineering measuring pipe chute | |
| CN202544823U (en) | Well field leaching solution control device | |
| CN207432020U (en) | A kind of ball blast tandem shot-blast cleaning machine | |
| CN207111199U (en) | A kind of oil level indicator structure for being used to solve fluctuation problem | |
| CN102699982B (en) | Method for manufacturing eccentric ring by profiling method | |
| CN207502487U (en) | Desulphurization system absorption tower PH measuring devices |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 650051 No. 115 East Renmin Road, Yunnan, Kunming Applicant after: POWERCHINA KUNMING ENGINEERING Corp.,Ltd. Address before: 650051 No. 115 East Renmin Road, Yunnan, Kunming Applicant before: HYDROCHINA KUNMING ENGINEERING Corp. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: HYDROCHINA KUNMING ENGINEERING CORPORATION TO: CHINESE ELECTRIC POWER CONSTRUCTION GROUP KUNMING DESIGN + RESEARCH INSTITUTE CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |