Preprocessing method of landslide dam diaphragm wall grooving construction

A technology for trench construction and anti-seepage walls, which is applied in weirs, water conservancy projects, sea area projects, etc., can solve problems such as overhead phenomena, high demolition costs, and difficult construction of anti-seepage walls, so as to achieve good construction quality and prevent The effect of hole inclination exceeding the standard and reducing the risk of collapse
CN110644438AInactive Publication Date: 2020-01-03SINOHYDRO FOUND ENG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SINOHYDRO FOUND ENG
Publication Date
2020-01-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preprocessing method of landslide dam diaphragm wall grooving construction. The preprocessing method of landslide dam diaphragm wall grooving construction comprises the stepsof drilling a row of blast holes at intervals on a landslide dam diaphragm wall axis; after completing the drilling of the blast holes, blasting lonestones encountered in the blast holes, and conveniently crushing the lonestones into rock blocks; after the lonestones are crushed into the rock blocks, drilling a row of upstream grouting holes and a row of downstream grouting holes at intervals onthe upstream and the downstream of the landslide dam diaphragm wall axis; after completing the drilling of the upstream grouting holes and the downstream grouting holes, grouting the grouting holes, and blocking leakage channels on the upstream and the downstream of the landslide dam diaphragm wall axis, so that grooving construction of the landslide dam diaphragm wall is conveniently carried outunder the conditions with a complete and stable stratum. According to the method provided by the invention, the geological conditions with more lonestones, a severe overhead phenomenon, a non-deposited and non-cemented stratum can be improved for a landslide dam, so that diaphragm wall construction can be favorably carried out on the stratum in the follow-up process.
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Description

technical field

[0001] The invention relates to the field of water conservancy and hydropower engineering, in particular to a pretreatment method for groove-forming construction of an anti-seepage wall of a dam body. Background technique

[0002] The barrier body was formed by earthquake collapse and landslides. Since the improvement of the barrier lake is imminent, the improvement of the barrier body needs to adhere to the working idea of ​​research, design, and treatment at the same time. It is necessary to carry out the implementation of risk reduction and flood control projects such as barrier body improvement as soon as possible. The damming body improvement is to carry out anti-seepage treatment and partial slope surface improvement on the damming body, weir foundation and bank slopes on both sides. The anti-seepage treatment of the damming body adopts the combination of anti-seepage wall and curtain grouting.

[0003] For the damming body, previous engineering experie...

Claims

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