A method of forming a dam by water injection of accumulative bodies to promote sliding
A technology for accumulations and dams, which is applied in the field of detection of accumulations and slopes, can solve the problems of slow construction speed of mechanical layered filling, unsatisfactory technology, and a large number of explosives.
Active Publication Date: 2020-10-23
GUIZHOU SURVEY & DESIGN RES INST FOR WATER RESOURCES & HYDROPOWER
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Problems solved by technology
[0003] At present, the local material dam is formed by mechanical layered filling or directional blasting. The construction speed of mechanical layered filling is slow, and directional blasting requires a large amount of explosives, so the existing technology is still not ideal.
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[0012] The present invention will be described in detail below with reference to the drawings and embodiments.
[0013] In the present invention, high-intensity water injection is used to promote sliding on an unstable landslide body, and multiple slidings occur, and steel pipes are buried on the top after one sliding, so that the diversion effect can be ensured even if the pipeline is buried by several subsequent slidings.
[0014] Specifically, see figure 1 and figure 2 , first of all, excavate a safe water injection operation platform 1 at the bedrock position at the rear edge of the accumulation body slope, and drill holes on the water injection operation platform 1 to form a row of water injection holes 2 on the base-cover interface. figure 1 It can be seen that the arrangement direction of the water injection holes 2 is inclined downward from the top water injection operation platform 1, which is basically consistent with the sliding direction of the accumulation body....
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The invention discloses a method for forming dam through accumulation body water injection and slip acceleration. The method comprises the steps that a safe water injection operation platform is dug at the bedrock part on the back edge of an accumulation body side slope, drilling is conducted on the operation platform, and a row of water injection holes are formed in a bedrock cover interface; bymeans of intermittent water injection, the accumulation body side slope is promoted to slip downwards and then cut off part of a river channel, grooving is conducted on the surface for embedding a culvert pipe, the back edge bedrock part obtained after slipping is dug again to form the water injection operation platform, drilling is conducted for the second time to conduct water injection operation, and second slipping is conducted; also, the grooving is conducted on the surface for embedding a culvert pipe for diversion, and the above-mentioned steps are repeated until the side slope basically does not slip after water injection; the rest part of a dam is obtained through mechanical layered filling. Accordingly, by conducting water injection and slip acceleration on the top of the accumulation body side slope, part of a riverbed is cut off by stages, the culvert pipes are embedded by stages for diversion, and the rest part is subjected to mechanical filling, the effects of not only controlling the accumulation body side slope but also reducing the dam filling amount can be achieved, and the significant economical efficiency is achieved.
Description
technical field [0001] The invention relates to a method for forming a dam by injecting water into accumulation bodies to promote sliding, and belongs to the technical field of accumulation body slope detection. [0002] technical background [0003] At present, local material dams are formed by mechanical layered filling or directional blasting. The construction speed of mechanical layered filling is slow, and directional blasting requires a large amount of explosives, so the existing technology is still not ideal. Contents of the invention [0004] The purpose of the present invention is to provide a method of forming a dam by injecting water into the accumulative body to promote slippage. The accumulation body slope is partially intercepted by water injection to promote slippage. While reducing the filling volume of the dam, the control of the accumulation body slope is realized. [0005] Technical scheme of the present invention is as follows: [0006] It is very diff...
Claims
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IPC IPC(8): E02D17/18
CPCE02D17/18
Inventor 李晓梅刘其文
Owner GUIZHOU SURVEY & DESIGN RES INST FOR WATER RESOURCES & HYDROPOWER