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Detection method for determining harmfulness of hydropower engineering environmental slope dangerous rock mass

A technology of hydropower engineering and detection method, which is applied in the direction of basic structure engineering, on-site foundation soil survey, construction, etc., and can solve the problem of dangerous rock mass hazard protection construction methods on slopes, poor protection construction effects, and economic losses caused by protective measures and other issues, to achieve the effect of improving protection construction measures, ensuring project safety, and reducing project cost

Inactive Publication Date: 2014-03-26
POWERCHINA CHENGDU ENG
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no uniform construction method for the hazard degree of slope dangerous rock mass and the corresponding protective construction method, and the selection of construction method is mainly completed by experienced engineers.
In addition, due to the fact that the existing construction methods do not consider factors such as the crowded engineering activity area, the scale of the dangerous rock mass, the height and stability of the dangerous object, sometimes there will be deviations between the protective measures and the actual needs, resulting in greater personal injury and Economic loss, ultimately leading to poor protection construction effect

Method used

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  • Detection method for determining harmfulness of hydropower engineering environmental slope dangerous rock mass
  • Detection method for determining harmfulness of hydropower engineering environmental slope dangerous rock mass
  • Detection method for determining harmfulness of hydropower engineering environmental slope dangerous rock mass

Examples

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Effect test

Embodiment 1

[0040] The Dadu River Changheba Hydropower Station is a first-class large-scale project. The environmental slope of the dam body is a dangerous rock mass with a distribution elevation of 1800m to 1750m. It is located in the rockfill area of ​​the downstream dam shell material. body. The terrain is a mountain ridge, three sides are empty, and the front edge is a steep wall of bedrock, with a height of about 20m. The dangerous rock mass in this area is affected by the steep cracks along the slope, and local toppling deformation is seen. Affected by the steep slope and unfavorable combination of structural surfaces, the overall stability is poor, and it is prone to large collapses under the action of external forces such as blasting vibration, heavy rainfall, and earthquakes, endangering the safety of dam filling. It is recommended to adopt active net protection and anchoring measures after clearing or surface slope clearing.

[0041] Carry out hazard degree classification accor...

Embodiment 2

[0043] The dangerous rock mass of Changheba Hydropower Station is located on the upper ridge of the switch station, with a steep slope, generally 65°-70°, and 85°-90° locally, with a distribution elevation of 1870m-1900m and a cubic volume of about 8000m3. It is a large-scale dangerous rock mass. The superficial rock mass is strongly unloaded and loosened, forming a loose rock belt, and exploration reveals that its horizontal depth is greater than 20m. Most of the rock mass is separated from the parent rock, the block diameter is generally 2m to 5m, and some parts have overhead structures. Due to the steep slope and unfavorable combination of structural surfaces, collapse and slide damage may occur under the action of gravity or other external forces, and the overall stability is extremely poor, endangering the construction and operation safety of the switch station. It is recommended to remove or take anchoring measures.

[0044]Carry out hazard degree classification accordi...

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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 [0001] The invention relates to the field of construction methods of hydropower projects, in particular to a detection method for determining the hazards of dangerous rock masses on environmental slopes of hydropower projects. Background technique [0002] Before the construction of hydropower projects, it is necessary to carry out some preliminary protection and reinforcement measures for the dangerous rock mass of the slope in the construction environment, so as to ensure the safety and quality of construction during construction. At present, there is no uniform construction method for the hazard degree of slope dangerous rock mass and the corresponding protective construction method, and the selection of construction method is mainly completed by experienced engineers. In addition, due to the fact that the existing construction methods do not consider factors such as the crowded engineering activity area, the scale of the dangerous rock mass, the height an...

Claims

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Application Information

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IPC IPC(8): E02D1/02
Inventor 张世殊宋胜武胡金山黄润太冯建明张安川冉从彦
Owner POWERCHINA CHENGDU ENG
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