Diaphragm wall permeability tester

Abstract

The invention discloses a diaphragm wall permeability tester comprising two water storage containers. Water pipes are both arranged above the water storage containers, water pipe control valves are arranged between the water storage containers and the water pipes, a water pipe air pressure valve is arranged at the top part of each water pipe, one ends of the two water storage containers are connected with an external water source and the other ends of the two water storage containers are connected with sample containers, and screen meshes and perforated plates are sequentially arranged among the water storage containers and the sample containers. When the diaphragm wall permeability tester is in a slurry penetration testing working condition, a slurry container is connected between the two sample containers, the screen meshes are all arranged among the slurry container and the sample containers, a slurry pipe is arranged above the slurry container, a slurry fluid injection valve is arranged between the slurry container and the slurry pipe, and a slurry air pressure valve is arranged at the top of the slurry pipe. When the diaphragm wall permeability tester is in a slurry skin seepage testing working condition, a concrete test block container is connected between the two sample containers. The diaphragm wall permeability tester can be used for simulating the penetration condition of slurry in stratum in the slurry wall protecting process.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering test equipment, and in particular relates to a permeability tester for an anti-seepage wall. Background technique [0002] In the construction of dam projects, it is often necessary to excavate deep grooves in the ground for pouring concrete cut-off walls for permeable foundations. With the expansion of the construction scale and function of infrastructure projects in our country, the excavation depth of cut-off wall slots is getting bigger and bigger, and the ground conditions are more and more complicated. The anti-seepage wall is a key project to ensure the normal operation of the dam of the water conservancy project. Especially in the deep overburden layer, the stress state of the wall is more complicated, and the requirements for the anti-seepage performance of the anti-seepage wall are also higher. The research on seepage characteristics is to consider the needs of the curr...

AI Technical Summary

Problems solved by technology

Therefore, people are still unable to make reasonable predictions on many problems in the project and take timely and effective solutions. In the actual construction process, there are endless hole collapse and leakage incidents, which have seriously affected the normal progress of the project.

[0004] Although people have properly dealt with the incidents in the project, the treatment method is mainly based on the engineering experience of the technicians, and lacks sufficient theoretical basis as a guide. Therefore, it is necessary to reveal the seepage mechanism of mud in the formation through experiments , recognize the formation process of the mud skin, and analyze the anti-seepage performance of the mud skin, and provide a theoretical basis for the mud wall protection measures, the stability analysis of the tank wall, and the anti-seepage effect evaluation of the cut-off wall and mud skin

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