Silt anti-permeability strength measuring equipment and method

Abstract

The invention relates to soil property measuring equipment and method, aiming at providing silt anti-permeability strength testing equipment and method. The silt anti-permeability strength measuring equipment comprises a permeation container with a built-in cutting ring, the top of the permeation container is a top cap, and the bottom is a base; and a water inlet is connected with a water supply pipe and a water inlet pipe through a tee-joint valve, the water supply pipe is connected to a water level adjusting device, and the water inlet pipe is connected to a varying head device. The measuring equipment and method can be used for measuring the permeation deformation development law and characteristic of silt under the conditions of different geological conditions, grain composition, hydraulic conditions and different preventing and controlling measures as well as the critical state index of the silt when permeation failure occurs so as to provide references for preventing and controlling the permeation failure of a silt foundation. The invention has great significance on the researches of the permeation deformation, the critical hydraulic gradient and the anti-permeability strength of the silt. In addition, the invention can realize the simultaneous analysis of multiple samples, which greatly shortens the measuring time and improves the work efficiency.

Description

technical field [0001] The invention relates to a soil performance testing device and method. More specifically, the present invention relates to a device and method for measuring the impermeability strength of silt. Background technique [0002] Silt soil is between sandy soil and clayey soil, plasticity index I p ≤10 and the particle size is greater than 0.075mm, the content of particles does not exceed 50% of the total weight of the soil. The Quaternary is considered a geological period rich in silt deposits due to tectonic and glacial activity. Silt is very common in areas of the world that have experienced glacial activity or alluvial action. [0003] Silt has special engineering properties. The structure of silt is sensitive and easily disturbed. The interaction between water and soil is obviously different in cohesive soil and sandy soil. The ability of the soil to resist seepage damage is called the impervious strength, which is the ultimate penetration force γ t...

AI Technical Summary

Problems solved by technology

[0005] Looking at the current situation of seepage failure research at home and abroad, most of them focus on dam seepage and piping, most of which are aimed at cohesive soil or cohesive soil, and the vertical seepage deformation meter is only suitable for measuring the vertical permeability coefficient and seepage deformation of coarse-grained soil.

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