A test system and method for simulating deformation of dam body soil during water level rise and fall

Abstract

The invention discloses a test system and method for simulating the deformation of dam body soil in the process of raising and lowering the water level, mainly including a lever loading device, a test system, and a high-precision hydraulic device; There is a high-precision hydraulic device on the side; the lever loading device is composed of a platform, a base, a counterweight, a lever, a weight, a column and a slide rail; the test system includes a dial gauge, a copper pressure cover with holes, a copper Guidance ring, permeable stone, steel compression ring knife and pressure chamber; high-precision hydraulic device is composed of high-precision water pressure gauge and water pressure testing machine. Using the deformation test system for simulating the water level rise and fall of the dam body soil disclosed by the present invention, by independently applying the overlying soil pressure and pore water pressure, the precise combination of loads at different depths and any water pressure can be realized, and the dam body soil at different depths can be simulated under the action of the water level rise and fall The real character and the whole process of deformation.

Description

technical field [0001] The invention relates to the field of water conservancy science research, in particular to a test system and method for simulating deformation of dam body soil in the process of rising and falling water levels. Background technique [0002] There are more than 98,000 reservoir dams in my country, more than 90% of which are earth-rock dams, which were mainly built in the 1950s to 1970s, and have played huge social, economic and ecological benefits in flood control, irrigation, water supply, power generation, etc. . Due to the special historical period and economic and technical conditions, these dams have congenital deficiencies, and it is common for them to operate beyond the design service life. Therefore, the reinforcement and treatment of dangerous earth-rock dams has become a long-term and arduous task in the construction and management of water conservancy projects in our country. [0003] In recent years, a considerable number of earth-rockfill ...

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Problems solved by technology

[0007] The soil specimens of traditional triaxial test equipment are not in contact with water all the time, but apply water pressure to the rubber sleeve to apply confining pressure to the soil specimens, which cannot simulate the lateral constraints of the soil specimens. Deformation process under different pore water pressure

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