Rock/soil drilling in-situ testing device and method

Abstract

The invention relates to the technical field of geotechnical engineering, and provides a rock mass / soil mass drilling in-situ test device and method. The device comprises a drilling machine, a test instrument, a pressure bearing plate, an upper supporting rod, a lower supporting rod, a pressurization system and a measurement system, wherein hole drilling and hole broadening are conducted through the drilling machine at any specified depth of a rock mass / soil mass to be tested to obtain a rock mass / soil mass which is to be tested and used for keeping ground stress; the test instrument is movably connected with the pressure bearing plate through the upper supporting rod and the lower supporting rod and is further in communication linkage with the measurement system; when the upper supporting rod or the lower supporting rod is stretched out to support the pressure bearing plate, the pressurization system exerts corresponding loads on the rock mass / soil mass to be tested through the pressure bearing plate, and the test instrument automatically collects and stores test data and transmits the test data to the measurement system for related parameter calculation. In-situ rock column / soil column cutting is adopted, and therefore shearing experiments can be conducted under the condition that the ground stress is kept, tests can be conducted in drilled holes at any depth, and the requirements for various indexes of field experiments are fully met.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a rock / soil drilling in-situ testing device and method. Background technique [0002] The physical and mechanical parameters of rock mass are the basic data for the implementation of geotechnical engineering. If accurate values ​​cannot be obtained, the strength design, deformation check calculation, and stability requirements of any rock mass engineering cannot be accurately designed and evaluated. Most engineering specifications have safety factors to increase safety guarantees. For civil engineering, transportation, water conservancy and hydropower, coal mine and other projects, which involve the design basic data of roadway support, slope and other projects, it is necessary to clearly measure the mechanical parameters of the roadway surrounding rock and the preset sliding surface rock and soil of the slope to ensure The strength, stiffness and stability of t...

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned rock mass experiments are mainly carried out on rock blocks, and the devices, experimental environment and testing process are too theoretical and idealized. Due to the huge difference between the rock blocks and the natural rock mass on site, the existing experimental devices cannot Effectively conduct on-site tests, and it is impossible to accurately and truly know the comprehensive mechanical parameters of natural rock mass in complex environments

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