Determining method for water-plugging curtain permeability inversion analysis construction

Abstract

The invention relates to a determining method for a water-plugging curtain permeability inversion analysis construction, in particular to the technical field of underground water management, which comprises the steps: a) a project quality target is put forward according to the project requirements, i.e. the water plugging ratio (%) and the anti-permeating standard (Lu) of a curtain body are inversely calculated by utilizing an inverse calculation method; b) the technical parameters of a curtain project are designed; c) a slurry injection test of the curtain is carried out, and the parameters are verified and perfected; d) the main body construction of the curtain is carried out according to the finally determined curtain project technical parameters, and the quality control is carried out according to the quality target determined in advance; and e) the water plugging effect of the curtain body is verified through construction check holes. The method has the advantages that the construction quality standards can be obtained in advance before the slurry injection construction of the curtain, i.e. the water plugging ratio and the anti-permeating standards of the curtain body; the method is scientific, reasonable, simple and convenient, has high accuracy and is beneficial to the guarantee of the construction quality of the construction; the efficiency is enhanced; and the method is especially suitable for the anti-permeating treatment of a dam foundation and can be widely applied to the construction of various projects of mine, water conservation and hydraulic power, railway, buildings and the like.

Description

technical field [0001] The invention relates to the technical field of water conservancy, mining and other groundwater treatment. Background technique [0002] Grouting, also known as grouting, is to configure certain materials into grout, and use pressure equipment to pour it into the formation or gap to make it diffuse, gel or solidify, so as to achieve the purpose of strengthening the formation or preventing seepage and plugging. Grouting technology involves many disciplines such as chemistry, fluid mechanics, engineering geology, and hydrogeology. Grouting technology has developed into a geotechnical construction technology with multiple functions including water blocking, flow closure, and rock and soil reinforcement. It is mainly used in mines, Water conservancy and hydropower, railway, construction and other projects are under construction. [0003] At present, curtain grouting is often used in water conservancy dam projects for anti-seepage treatment of dam foundati...

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Problems solved by technology

[0010] From the above mine water blocking curtain design and construction procedures, it can be seen that the final water control effect of the mine: the water blocking rate and the anti-seepage standard of the curtain body cannot be determined before the curtain body is formed, that is, the construction effect can only be obtained after the construction is completed and verified by the inspection hole , unable to propose corresponding tec...

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