CN103669320A - Detection method for determining harmfulness of hydropower engineering environmental slope dangerous rock mass - Google Patents
Detection method for determining harmfulness of hydropower engineering environmental slope dangerous rock mass Download PDFInfo
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- CN103669320A CN103669320A CN201310731507.XA CN201310731507A CN103669320A CN 103669320 A CN103669320 A CN 103669320A CN 201310731507 A CN201310731507 A CN 201310731507A CN 103669320 A CN103669320 A CN 103669320A
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Abstract
The invention relates to a detection method for determining harmfulness of hydropower engineering environmental slope dangerous rock mass. The detection method can be used for determining the harmfulness of the hydropower engineering environmental slope dangerous rock mass more accurately. The detection method includes the following steps of a, determining classification objects of hydropower construction environment, b, performing evaluation at a construction site, c, determining the harmfulness of the hydropower engineering environmental slope dangerous rock mass according to site classification results determined in the step b, d, performing corresponding prevention measures on the dangerous rock mass according to harmfulness results, obtained in the step c, of the hydropower engineering environmental slope dangerous rock mass. According to the detection method, a win-win situation of safety protection and economic benefits can be achieved. The detection method can be used for determining the harmfulness of the hydropower engineering environmental slope dangerous rock mass and effectively improve construction protection measures for the harmfulness of the dangerous rock mass.
Description
Technical field
The present invention relates to Construction of Hydropower Engineering method field, especially a kind of for determining the detection method of hydroelectric project environmental slope Dangerous Rock Body harmfulness.
Background technology
Before carrying out Construction of Hydropower Engineering, need to carry out some protection Reinforcement Measures in advance to the side slope Dangerous Rock Body of construction environment, thus the safety while guaranteeing construction and the quality of construction.For the side slope Dangerous Rock Body extent of injury and corresponding construction of prevention work mode, there is no unified construction method at present, is mainly to complete choosing of construction method by experienced engineering staff.In addition, existing construction method is not owing to considering the intensive engineering activity of personnel district, Dangerous Rock Body scale, from factors such as the height of harm object and stability, there is sometimes safeguard procedures and actual needs deviation and cause causing larger personnel's injury and economic loss, finally cause the effect of construction of prevention work not good enough.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of detection method that can determine more accurately hydroelectric project environmental slope Dangerous Rock Body harmfulness.
The technical solution adopted for the present invention to solve the technical problems is: for determining the detection method of hydroelectric project environmental slope Dangerous Rock Body harmfulness, comprise the following steps:
A, determine the classification object of Hydroelectric Project Construction environment: described classification object at least comprises each classification object of the intensive engineering activity of personnel district, hydroelectric project environmental hazard object and Dangerous Rock Body scale, wherein:
(1) result of the intensive engineering activity of personnel district being carried out to classification is divided into personnel intensive engineering activity district or the intensive engineering activity of non-personnel district;
(2) hydroelectric project environmental hazard object is carried out to classification, according to the significance level of hydraulic structure and the classification situation in the middle intensive engineering activity of personnel of step (1) district that are subject to engineering impact on environment, determine at least harm object classification of the hydroelectric project environment of Three Estate;
(3) take Dangerous Rock Body scale as the criteria for classifying, Slope Unstable Rock carries out the classification of Dangerous Rock Body scale;
B, job site value evaluation and test: according to geological survey and field measurement parameter on the spot, at least each classification object of determining in step a is evaluated and tested;
C, determine described hydroelectric project environmental slope Dangerous Rock Body harmfulness: according to the classification results at determined scene in step b, determine hydroelectric project environmental slope Dangerous Rock Body harmfulness;
D, according to the hydroelectric project environmental slope Dangerous Rock Body harmfulness result obtaining in step c, Dangerous Rock Body is implemented to corresponding prophylactico-therapeutic measures.
Further, when determining the classification object of Hydroelectric Project Construction environment, using slope surface characteristics and vegetation developmental state as classification object, and in value, slope surface characteristics and vegetation developmental state are carried out to field investigation value at the construction field (site).
The invention has the beneficial effects as follows: when definite hydroelectric project environmental slope Dangerous Rock Body harmfulness, needing the key of considering is the intensive engineering activity situations of personnel, these three parameters of the significance level of the hydraulic structure of engineering impact on environment and Dangerous Rock Body scale, the present invention is after having taken into full account above-mentioned three kinds of influence factors, by at least comprising that correlation between described three parameters combines with parameter value on the spot, draw Dangerous Rock Body harmfulness, and the construction of prevention work safeguard measure targetedly Dangerous Rock Body being adapted with this, such detection mode can be when ensureing engineering safety effectively, thereby allow again build by fund, obtain an equitable breakdown and reduce construction costs, save the duration, can obtain the doulbe-sides' victory of security protection and economic benefit.The present invention can be for determining hydroelectric project environmental slope Dangerous Rock Body harmfulness, and effectively improve the protection working measure carrying out for Dangerous Rock Body harmfulness.
The specific embodiment
Below in conjunction with embodiment, the present invention is further described.
For determining the detection method of hydroelectric project environmental slope Dangerous Rock Body harmfulness, comprise the following steps:
A, determine the classification object of Hydroelectric Project Construction environment: described classification object at least comprises each classification object of the intensive engineering activity of personnel district, hydroelectric project environmental hazard object and Dangerous Rock Body scale, wherein:
(1) result of the intensive engineering activity of personnel district being carried out to classification is divided into personnel intensive engineering activity district or the intensive engineering activity of non-personnel district;
(2) hydroelectric project environmental hazard object is carried out to classification, according to the significance level of hydraulic structure and the classification situation in the middle intensive engineering activity of personnel of step (1) district that are subject to engineering impact on environment, determine at least harm object classification of the hydroelectric project environment of Three Estate;
(3) take Dangerous Rock Body scale as the criteria for classifying, Slope Unstable Rock carries out the classification of Dangerous Rock Body scale;
B, job site value evaluation and test: according to geological survey and field measurement parameter on the spot, at least each classification object of determining in step a is evaluated and tested;
C, determine described hydroelectric project environmental slope Dangerous Rock Body harmfulness: according to the classification results at determined scene in step b, determine hydroelectric project environmental slope Dangerous Rock Body harmfulness;
D, according to the hydroelectric project environmental slope Dangerous Rock Body harmfulness result obtaining in step c, Dangerous Rock Body is implemented to corresponding prophylactico-therapeutic measures.
In practice of construction, needs assessment hydroelectric project environmental slope Dangerous Rock Body harmfulness why, be because described Dangerous Rock Body not only entail dangers to constructor's personal safety, also can have influence on construction safety and the construction quality of project under construction.Therefore, before formal construction, all need to detect targetedly according to hydroelectric project environmental slope Dangerous Rock Body harmfulness degree, and carry out targetedly construction protection according to the testing result obtaining, so not only can allow construction of prevention work effect better, also can greatly save the fund that protection spends, and shorten the time that protection spends.
When reality detects, according to engineering construction and the protection experience of practice accumulation, when the intensive engineering activity of personnel district is carried out to classification, generally choose the intensive engineering activity of the engineering region behaviour person district that interior gathering number of same time surpasses 50 people.For most job sites, construction and owner campsite, core of earth-rockfill dam, concrete dam body foundation ditch etc. are the intensive engineering activity of personnel district.
When hydroelectric project environmental hazard object carries out classification, needing the factor of definite consideration is the intensive engineering activity of significance level, the personnel district that is subject to the hydraulic structure of engineering impact on environment.The practical experience of building in conjunction with China's water power, can carry out classification with reference to following table:
Above-mentionedly for being subject to the hierarchical table of significance level of the hydraulic structure of engineering impact on environment to combine this factor of the intensive residential community of personnel, taken into full account the theory of safe construction, safe construction is also core concept of the present invention.Wherein, 1 grade of object of harm, for harmful grade, belongs to the target that needs key protection construction, and 2 grades of harm objects are next, are finally to endanger 3 grades of objects.
Meanwhile, also need to consider the attribute of Dangerous Rock Body self, in general, mainly take Dangerous Rock Body scale as quantitative criteria.In conjunction with relevant engineering experience, for the Hydroelectric Project Construction of China, can to Dangerous Rock Body scale, carry out classification with reference to following table:
Classification through above-mentioned, can allow constructor carry out more targetedly at the scene on-the-spot investigation and measurement, thereby effectively assess the harmfulness of Dangerous Rock Body.
Constructor, obtain at the scene after the parameter of corresponding classification, can make assessment to the harmfulness of Dangerous Rock Body.
General, constructor need to gather above-mentioned three classifications, still, and can be in conjunction with concrete practical experience, the parameter that adds other in classification, such as adding Dangerous Rock Body from endangering the classification of object height, the classification of the classification of slope surface characteristics, vegetation developmental state.The increase of classification item number can allow the more refinement of harmfulness conclusion finally obtaining; also the harmfulness result on closing to reality more; can allow the construction carried out based on this result more meet the actual features of Dangerous Rock Body, greatly improve the quality of protection of protection construction, also can better protect user of service.
Certainly, because the increase of described classification item number will inevitably cause the increase of workload, when concrete application is of the present invention, the classification item number needing with objective reality is as the criterion, thereby guarantee to realize testing result accurately and the balance of the raising of operating efficiency, thereby allow the present invention bring into play in practice actual effect.
Same, in conjunction with China's Hydroelectric Project Construction practical experience, the parameter obtaining in conjunction with above-mentioned classification, can obtain certain Evaluation of Harmfulness conclusion by following table:
For some special hydroelectric project environment, also need constructor to judge flexibly, but above-mentioned harmfulness judgement conclusion can well instruct the construction that Dangerous Rock Body is carried out.Wherein, extent of injury I level is that the extent of injury is highest, is followed successively by extent of injury II level, extent of injury III level.
Finally, for the extent of injury of Dangerous Rock Body, the construction of prevention work adapting with it, thus targetedly Dangerous Rock Body is carried out to effectively protection construction.
Embodiment:
Embodiment mono-:
Power station, dam, long river, Dadu River is first-class major works, and dam body environmental slope is for growing Dangerous Rock Body, and distribution elevation 1800m～1750m, is positioned at dam shell material rockfill area, downstream, and total side amount approximately 50,000 m3, belong to super-huge Dangerous Rock Body.Landform is a ridge, and three face sky, and leading edge is basement rock cliff, highly about 20m, and the Dangerous Rock Body of this district's rock mass, is subject to along slope steep dip Effect of Fissure, and Toppling Deformation is seen in part.Be subject to that slope is steep, the more complete impact of structural plane Disadvantageous combination, general stability is poor, easily produces larger avalanche under the External Force Actings such as concussion of blasting, heavy showers, earthquake, jeopardizes dam and fills safety.Behind suggestion removing or the clear slope of table portion, adopt active network protection and anchoring treatment measures.
By the inventive method, carry out Harm level classification.This Dangerous Rock Body harm object is dam, is 1 grade of hydraulic structure, but its non-clay core wall of earth dam position, therefore its harm object is 1 grade of non-key position of hydraulic structure, therefore harm object rank is defined as 2 grades.Because it only affects construction period safety, after unstability, on the impact of dam operation nothing, therefore final harm object rank is only 3 grades.Its poor stability, belong to super-huge Dangerous Rock Body, from harm object, be greater than 30m, by table 3, dividing extent of injury rank is II level, and the extent of injury is medium, finally take the initiative net and local anchoring treatment measures.
Embodiment bis-:
The Dangerous Rock Body in power station, dam, long river is positioned at switching station top ridge, and the gradient is steeper, and general 65 °～70 °, local 85 °～90 °, distribution elevation 1870m～1900m, the about 8000m3 of side's amount, belongs to large-scale Dangerous Rock Body.Shallow table portion Rock Mass Unloading is lax strong, forms loosening rock zone, and exploration discloses its horizontal depth and is greater than 20m.Rock mass major part is separated with parent rock, the general 2m～5m in piece footpath, local tool aerial construction.Because the gradient is steep, structural plane Disadvantageous combination is complete, may produce avalanche and slump and destroy under gravity or other External Force Acting, and general stability extreme difference, jeopardizes switching station construction and security of operation.Anchor measure is removed or is taked in suggestion.
By the inventive method, carry out Harm level classification.This Dangerous Rock Body harm object is switching station, is 1 grade of hydraulic structure key location, and it not only affects construction period safety, and after unstability, to switch, standing-meeting damages, and causes power station not generate electricity, and loses hugely, and therefore final harm object rank is 1 grade.Its stability extreme difference, belong to large-scale Dangerous Rock Body, from harm object, be greater than 10m, by table 3, dividing extent of injury rank is I level, and the extent of injury is high, finally takes system anchor cable and sash beam to carry out engineering processing.
Claims (2)
1. for determining the detection method of hydroelectric project environmental slope Dangerous Rock Body harmfulness, it is characterized in that, comprise the following steps:
A, determine the classification object of Hydroelectric Project Construction environment: described classification object at least comprises each classification object of the intensive engineering activity of personnel district, hydroelectric project environmental hazard object and Dangerous Rock Body scale, wherein:
(1) result of the intensive engineering activity of personnel district being carried out to classification is divided into personnel intensive engineering activity district or the intensive engineering activity of non-personnel district;
(2) hydroelectric project environmental hazard object is carried out to classification, according to the significance level of hydraulic structure and the classification situation in the middle intensive engineering activity of personnel of step (1) district that are subject to engineering impact on environment, determine at least harm object classification of the hydroelectric project environment of Three Estate;
(3) take Dangerous Rock Body scale as the criteria for classifying, Slope Unstable Rock carries out the classification of Dangerous Rock Body scale;
B, job site value: according to geological survey and field measurement parameter on the spot, at least each classification object of determining in step a is carried out to classification;
C, determine described hydroelectric project environmental slope Dangerous Rock Body harmfulness: according to the classification results at determined scene in step b, determine hydroelectric project environmental slope Dangerous Rock Body harmfulness;
D, according to the hydroelectric project environmental slope Dangerous Rock Body harmfulness result obtaining in step c, Dangerous Rock Body is implemented to corresponding prophylactico-therapeutic measures.
2. as claimed in claim 1 for determining the detection method of hydroelectric project environmental slope Dangerous Rock Body harmfulness, it is characterized in that: when determining the classification object of Hydroelectric Project Construction environment, using slope surface characteristics and vegetation developmental state as classification object, and in value, slope surface characteristics and vegetation developmental state are carried out to field investigation value at the construction field (site).
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Citations (3)
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| JP2007278838A (en) * | 2006-04-06 | 2007-10-25 | Dia Consultant:Kk | Method and device for evaluating stratum transfer behavior |
| CN102979531A (en) * | 2012-12-13 | 2013-03-20 | 中国水电顾问集团成都勘测设计研究院 | Construction method and structure for reinforcing large rock slope deep weak structural plane |
| CN103424099A (en) * | 2013-08-26 | 2013-12-04 | 招商局重庆交通科研设计院有限公司 | Slope monitoring and early warning system and method based on deformation data |
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2013
- 2013-12-26 CN CN201310731507.XA patent/CN103669320A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007278838A (en) * | 2006-04-06 | 2007-10-25 | Dia Consultant:Kk | Method and device for evaluating stratum transfer behavior |
| CN102979531A (en) * | 2012-12-13 | 2013-03-20 | 中国水电顾问集团成都勘测设计研究院 | Construction method and structure for reinforcing large rock slope deep weak structural plane |
| CN103424099A (en) * | 2013-08-26 | 2013-12-04 | 招商局重庆交通科研设计院有限公司 | Slope monitoring and early warning system and method based on deformation data |
Non-Patent Citations (2)
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| 王鹏: "水麻路危岩危险性风险评价及防治", 《中国优秀硕士论文全文数据库工程科技2辑》 * |
| 董家兴等: "卜寺沟水电站环境边坡危险源分类及危险度评价", 《工程地质学报》 * |
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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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Application publication date: 20140326 |