Borehole in-situ test sounding loading device and using method

Abstract

The invention discloses a borehole in-situ test sounding loading device and a using method. The borehole in-situ test sounding loading device comprises a single-point loader, a video acquisition unit,a displacement measuring unit, a sounding cone head and a pressure-bearing base. A concave cavity is formed in the upper portion of the single-point loader, a pressure chamber is arranged on the lower potion of the single-point loader, and the bottom of the sounding cone head penetrates through the concave cavity and then extends into the pressure chamber. A wire interface, a push rod interface and an oil way interface are further sequentially arranged on the side face of the single-point loader, the wire interface is connected with an external controller, the push rod interface is connectedwith an external power propulsion system, and the oil way interface is connected with an external hydraulic loading system. The borehole in-situ test sounding loading device is light and convenient, the test process is simple and easy, a test position can be selected flexibly, the physical and mechanical parameters of rock mass can be obtained intuitively and accurately, and the mechanical properties of the rock mass are reflected better.

Description

technical field [0001] The invention relates to the technical field of drilling original rock loading test, in particular to a penetrating loading device and testing method for drilling in-situ testing. Background technique [0002] For mining and geotechnical engineering involving the support of chambers and roadways, the mechanical parameters of surrounding rock are the key to guiding engineering design and construction and ensuring that the support design scheme meets the stability requirements, and play a vital role in safe production. effect. [0003] For rock mass, coal mass, etc. at specific engineering sites, the common method to obtain the basic physical and mechanical parameters is through indoor experiments. For example, the cohesion and friction angle of the rock mass can be obtained through triaxial experiments and other methods; the Poisson's ratio and elastic modulus of the rock mass can be obtained through uniaxial compression experiments and other methods. ...

AI Technical Summary

Problems solved by technology

Therefore, in-situ testing in boreholes is an effective method. Through investigation, it is found that the current on-site testing equipment has complex structure, cumbersome testing process and poor testing accuracy.

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