CN103835299A - Method for determining side slope dangerous rock body stability in water-power engineering environment - Google Patents
Method for determining side slope dangerous rock body stability in water-power engineering environment Download PDFInfo
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- CN103835299A CN103835299A CN201310746246.9A CN201310746246A CN103835299A CN 103835299 A CN103835299 A CN 103835299A CN 201310746246 A CN201310746246 A CN 201310746246A CN 103835299 A CN103835299 A CN 103835299A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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Abstract
The invention discloses a method for determining side slope dangerous rock body stability in a water-power engineering environment, and relates to water-power engineering. The method for determining side slope dangerous rock body stability in the water-power engineering environment meets water-power engineering practice and is beneficial for reducing unnecessary side slope dangerous rock body treatment. The method determining the side slope dangerous rock body stability in the water-power engineering environment includes the steps that according to the level of a hydraulic structure affected by an environment side slope dangerous rock body, the area of the affected hydraulic structure and whether the area of the affected hydraulic structure is a crowded engineering activity area or not, the estimation level of dangerous rock body stability is determined, stability of key portions of the hydraulic structure and safety of the crowded engineering activity area are ensured, the stability estimation standards of non-key portions and non-crowded engineering activity area are reduced, an environment side slope is distinguished to the maximum, and the method is beneficial for reducing unnecessary side slope dangerous rock body treatment, avoids unnecessary engineering investments and saves the construction period.
Description
Technical field
The present invention relates to hydroelectric project field, relate in particular to a kind of hydroelectric project environmental slope Dangerous Rock Body stability and determine method.
Background technology
Environmental slope Dangerous Rock Body estimation of stability is at present without unified standard, and imperfection, and existing evaluation criterion is not considered its harm object and load application, does not meet hydroelectric project reality.Therefore the hydraulic structure rank, the personnel's intense activities degree that are necessary to affect according to Dangerous Rock Body, affect period, load application, set up respectively Dangerous Rock Body estimation of stability standard.
Summary of the invention
The technical problem to be solved in the present invention is: provide one to meet hydroelectric project reality, be conducive to the method for the definite hydroelectric project environmental slope Dangerous Rock Body stability that reduces unnecessary side slope Dangerous Rock Body improvement.
For the technical scheme that addresses the above problem employing is: hydroelectric project environmental slope Dangerous Rock Body stability determines that method comprises the steps:
A, basis " DL/T5180 hydroelectric pivotal project grade classification and design safety standard " are determined the rank of environmental slope hydraulic structure that Dangerous Rock Body affects;
B, basis " DL/T5180 hydroelectric pivotal project grade classification and design safety standard " determine whether the region of environmental slope hydraulic structure that Dangerous Rock Body affects is the key area of hydraulic structure;
C, determine whether the region of the hydraulic structure that environmental slope Dangerous Rock Body affects is the intensive engineering activity of personnel district, construction and owner campsite, core of earth-rockfill dam, concrete dam body foundation ditch and may be at one time in the gathering number engineering region etc. that exceedes 50 people be the intensive engineering activity of personnel district;
D, according to the rank of environmental slope hydraulic structure that Dangerous Rock Body affects, whether institute affects the region of hydraulic structure and region that institute affects hydraulic structure for determining Dangerous Rock Body estimation of stability rank, table specific as follows in the intensive engineering activity of personnel district:
E, revise Dangerous Rock Body harmful grade, modification method is as follows: only on building, operation has impact and do not endanger building and personal safety Dangerous Rock Body unstable failure, can reduce one-level through demonstration; Can predict, forecast and can adopt that report measure takes precautions against its unstable failure by safety monitoring, can reduce one-level or secondary through demonstration; What only affect construction period hydraulic architecture safety and do not endanger personal safety can directly divide 3 grades into;
Lower limit solution in F, employing Plane Rigid Body limit equilibrium method is calculated, and draws the Against Sliding Stability safety factor under the different Load Combinations of Dangerous Rock Body or application.
G, judge whether the Against Sliding Stability safety factor of Dangerous Rock Body is less than the value in following table; Under various Load Combinations or application, the Against Sliding Stability safety factor of Dangerous Rock Body is all greater than the value in following table, and Dangerous Rock Body needn't be processed; Against Sliding Stability safety factor under 1 grade of arbitrary Load Combination of Dangerous Rock Body or application is less than the value in following table, and Dangerous Rock Body need to take engineering measure to carry out firmly; 2, the Against Sliding Stability safety factor under 3 grades of arbitrary Load Combinations of Dangerous Rock Body or application is less than the value in following table, needs local stiffening, strengthens making an inspection tour and observation.
The invention has the beneficial effects as follows: according to the rank of environmental slope hydraulic structure that Dangerous Rock Body affects, whether institute affects the region of hydraulic structure and region that institute affects hydraulic structure for determining Dangerous Rock Body estimation of stability rank in the intensive engineering activity of personnel district, the stability of hydraulic architecture key position and the safety in the intensive engineering activity of personnel district are ensured, reduce the estimation of stability standard in non-key position and the intensive engineering activity of non-personnel district, distinguish to greatest extent environmental slope, being conducive to reduce unnecessary side slope Dangerous Rock Body administers, avoid unnecessary engineering to drop into, save the duration.
The specific embodiment
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1:
Power station, two Jiangkou, Dadu River 25# Dangerous Rock Body is positioned at directly over the left dam abutment axis of dam, on cliff, and distribution elevation 2635-2731m, side amount 18900m
3, be weak weathering, strong off-load granite, be time fast shape structure, be subject to weathering Unloading Effect, 5-10cm is opened in crack, filling chip and mud.Main crack: 1. 50 °-55 ° of N45 ° of-55 ° of W/SW ∠, forward domatic; 2. 75 °-80 ° of N70 ° of-75 ° of E/SE ∠, free face; 3. 50 °-60 ° of N25 ° of-35 ° of W/NE ∠, reverse domatic.Wherein sliding surface at the bottom of suitable slope crack formation, the suberect cliff of free face formation parallel with river valley, reverse domatic crack forms side direction cutting, cut mutually in three groups of cracks, local weathering forms cavity, and avalanche easily occurs poor stability under the impact of the factor such as heavy rain, earthquake.Chief threat dam.
27# Dangerous Rock Body is positioned at more than left dam abutment upstream side dam shell rockfill area covers scope, cliff top, distribution elevation 2483-2558m(main body section is below crest elevation), 23040m
3, be weak weathering, strong off-load granite, be time fast shape structure, 5-10cm is opened in crack, filling chip and mud.Main crack: 1. 40 °-50 ° of N70 ° of-80 ° of W/SW ∠, forward domatic; 2. 80 °-85 ° of N30 ° of-40 ° of E/SE ∠, form free face; 3. 50 °-60 ° of N30 ° of-40 ° of W/NE ∠, reverse domatic.Wherein sliding surface at the bottom of suitable slope crack formation, the suberect cliff of free face formation parallel with river valley, reverse domatic crack forms side direction cutting, cut mutually in three groups of cracks, local weathering forms cavity, and avalanche easily occurs poor stability under the impact of the factor such as heavy rain, earthquake.Chief threat dam.
Show that according to " DL/T5180 hydroelectric pivotal project grade classification and design safety standard " two Jiangkous Hydropower Project is for first-class large (1) type engineering, water retaining structure (core wall dam) is 1 grade of building.
The Against Sliding Stability safety factor that lower limit solution in employing Plane Rigid Body limit equilibrium method calculates 25# Dangerous Rock Body is as follows:
Low-dip structure face+its trailing edge is slide plane, nominal situation: 1.315; Heavy rain operating mode: 1.114; Earthquake operating mode: 1.172.
The Against Sliding Stability safety factor that lower limit solution in employing Plane Rigid Body limit equilibrium method calculates 27# Dangerous Rock Body is as follows:
Steep dip structural plane+low-dip structure face is slide plane, nominal situation: 1.341; Heavy rain operating mode: 1.143; Earthquake operating mode: 1.214.
If adopt existing hydroelectric project environmental slope Dangerous Rock Body stability to determine method, can show that 25#, 27# Dangerous Rock Body are all decided to be 1 grade of side slope.Corresponding stability analysis safety factor is: nominal situation (combination substantially): 1.30～1.25; Earthquake operating mode (accidentally combination): 1.10～1.05; Of short duration operating mode (combination substantially): 1.20～1.15.Result of calculation shows, does not all meet the stability requirement of 1 grade of side slope under 25#, 27# Dangerous Rock Body heavy rain operating mode, need take certain supporting treatment measures.
And according to the inventive method, 25# Dangerous Rock Body is positioned at directly over the axis of dam, affect hydraulic structure key position, and in personnel's intense activities district, therefore its estimation of stability rank is 1 grade, and by calculating, under its heavy rain operating mode, the coefficient of stability is 1.114, do not meet 1 grade of stability criterion (1.15), need take engineering measure.
27# Dangerous Rock Body belongs to non-key position more than being positioned at dam shell material ballast scope, although dam is 1 grade of hydraulic structure, is 2 grades according to its estimation of stability rank of table 1.In addition, Dangerous Rock Body unstable failure has impact to its operation, but can not endanger building safety, therefore can reduce one-level, is 3 grades, passes judgment on by 3 grades of stability criterion.Calculating achievement shows all to meet 3 grades of estimation of stability standards under the various operating modes of this Dangerous Rock Body, can not carry out engineering processing, and only reinforcement tour and general observation can.Avoid so unnecessary engineering to drop into, saved the duration.
Claims (1)
1. a method for definite hydroelectric project environmental slope Dangerous Rock Body stability, is characterized in that comprising the steps:
A, basis " DL/T5180 hydroelectric pivotal project grade classification and design safety standard " are determined the rank of environmental slope hydraulic structure that Dangerous Rock Body affects;
B, basis " DL/T5180 hydroelectric pivotal project grade classification and design safety standard " determine whether the region of environmental slope hydraulic structure that Dangerous Rock Body affects is the key area of hydraulic structure;
C, determine whether the region of the hydraulic structure that environmental slope Dangerous Rock Body affects is the intensive engineering activity of personnel district, construction and owner campsite, core of earth-rockfill dam, concrete dam body foundation ditch and may be at one time in the gathering number engineering region etc. that exceedes 50 people be the intensive engineering activity of personnel district;
D, according to the rank of environmental slope hydraulic structure that Dangerous Rock Body affects, whether institute affects the region of hydraulic structure and region that institute affects hydraulic structure for determining Dangerous Rock Body estimation of stability rank, table specific as follows in the intensive engineering activity of personnel district:
E, revise Dangerous Rock Body harmful grade, modification method is as follows: only on building, operation has impact and do not endanger building and personal safety Dangerous Rock Body unstable failure, can reduce one-level through demonstration; Can predict, forecast and can adopt that report measure takes precautions against its unstable failure by safety monitoring, can reduce one-level or secondary through demonstration; What only affect construction period hydraulic architecture safety and do not endanger personal safety can directly divide 3 grades into;
Lower limit solution in F, employing Plane Rigid Body limit equilibrium method is calculated, and draws the Against Sliding Stability safety factor under the different Load Combinations of Dangerous Rock Body or application;
G, judge whether the Against Sliding Stability safety factor of Dangerous Rock Body is less than the value in following table; Under various Load Combinations or application, the Against Sliding Stability safety factor of Dangerous Rock Body is all greater than the value in following table, and Dangerous Rock Body needn't be processed; Against Sliding Stability safety factor under 1 grade of arbitrary Load Combination of Dangerous Rock Body or application is less than the value in following table, and Dangerous Rock Body need to take engineering measure to carry out firmly; 2, the Against Sliding Stability safety factor under 3 grades of arbitrary Load Combinations of Dangerous Rock Body or application is less than the value in following table, needs local stiffening, strengthens making an inspection tour and observation.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727329A (en) * | 2015-03-05 | 2015-06-24 | 四川大学 | Slope cutting method based on high-pressure water jet technique |
| CN105447319A (en) * | 2015-12-03 | 2016-03-30 | 中国电建集团西北勘测设计研究院有限公司 | Determination method for different geological interface calculation parameters of sliding blocks of arch dam abutment |
| CN104360411B (en) * | 2014-11-13 | 2017-01-25 | 中国电建集团成都勘测设计研究院有限公司 | Method for evaluating stability of slope with front edge gradually shelving in forward direction |
| CN112651659A (en) * | 2021-01-07 | 2021-04-13 | 中国水利水电科学研究院 | Flood control risk assessment method for water transfer project to left bank area of engineering area |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1161840A (en) * | 1997-08-08 | 1999-03-05 | Akira Nishimura | Bearing plate lock bolt inverted lining method and lock bolt bearing plate device |
| KR20070004254A (en) * | 2005-07-04 | 2007-01-09 | 주식회사 성원안전 | A terraced reinforcing device for slope protection and greening |
| CN101538861A (en) * | 2009-04-21 | 2009-09-23 | 中国科学院武汉岩土力学研究所 | Highway slope stability grading evaluation method |
| CN103268420A (en) * | 2013-05-24 | 2013-08-28 | 河海大学 | Method for evaluating risks of high rock slope |
-
2013
- 2013-12-30 CN CN201310746246.9A patent/CN103835299B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1161840A (en) * | 1997-08-08 | 1999-03-05 | Akira Nishimura | Bearing plate lock bolt inverted lining method and lock bolt bearing plate device |
| KR20070004254A (en) * | 2005-07-04 | 2007-01-09 | 주식회사 성원안전 | A terraced reinforcing device for slope protection and greening |
| CN101538861A (en) * | 2009-04-21 | 2009-09-23 | 中国科学院武汉岩土力学研究所 | Highway slope stability grading evaluation method |
| CN103268420A (en) * | 2013-05-24 | 2013-08-28 | 河海大学 | Method for evaluating risks of high rock slope |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360411B (en) * | 2014-11-13 | 2017-01-25 | 中国电建集团成都勘测设计研究院有限公司 | Method for evaluating stability of slope with front edge gradually shelving in forward direction |
| CN104727329A (en) * | 2015-03-05 | 2015-06-24 | 四川大学 | Slope cutting method based on high-pressure water jet technique |
| CN105447319A (en) * | 2015-12-03 | 2016-03-30 | 中国电建集团西北勘测设计研究院有限公司 | Determination method for different geological interface calculation parameters of sliding blocks of arch dam abutment |
| CN105447319B (en) * | 2015-12-03 | 2018-03-13 | 中国电建集团西北勘测设计研究院有限公司 | Arch Dam Abutment sliding block difference geology level meters calculate determination method for parameter |
| CN112651659A (en) * | 2021-01-07 | 2021-04-13 | 中国水利水电科学研究院 | Flood control risk assessment method for water transfer project to left bank area of engineering area |
| CN112651659B (en) * | 2021-01-07 | 2021-07-16 | 中国水利水电科学研究院 | Flood control risk assessment method for water transfer project to left bank area of engineering area |
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Address after: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Applicant after: Co., Ltd of Chengdu survey and design academy of electricity Jian group of China Address before: The North Qingyang District of Chengdu City, Sichuan Province, No. 610072 Applicant before: Chengdu Hydroelectric Investigation & Design Institute of SPC |
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Free format text: CORRECT: APPLICANT; FROM: CHENGDU HYDROELECTRIC INVESTIGATION + DESIGN INSTITUTE OF SPC TO: CHINA POWER GROUP CHENGDU INVESTIGATION DESIGN + RESEARCH INSTITUTE CO., LTD. |
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Inventor after: Zhang Shishu Inventor after: Cui Changwu Inventor after: Chen Chunwen Inventor after: Liu Yongbo Inventor after: Ran Congyan Inventor after: Xie Jianming Inventor after: Hu Jinshan Inventor after: Hao Yuanlin Inventor after: Huang Runtai Inventor after: Zhang Anchuan Inventor after: Li Wengang Inventor after: Shi Dingguo Inventor after: Jiang Ping Inventor after: Feng Jianming Inventor before: Zhang Shishu Inventor before: Hu Jinshan Inventor before: Li Wengang Inventor before: Shi Dingguo Inventor before: Jiang Ping Inventor before: Zheng Hanhuai Inventor before: Cui Changwu Inventor before: Chen Chunwen Inventor before: Liu Yongbo |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG SHISHU HU JINSHAN LI WENGANG SHI DINGGUO JIANG PING ZHENG HANHUAI CUI CHANGWU CHEN CHUNWEN LIU YONGBO TO: ZHANG SHISHU HU JINSHAN HAO YUANLIN HUANG RUNTAI ZHANG ANCHUAN LI WENGANG SHI DINGGUO JIANG PING FENG JIANMING CUI CHANGWU CHEN CHUNWEN LIU YONGBO RAN CONGYAN XIE JIANMING |
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