Finally, the present problems of the borehole penetratingmethod are analyzed; and the improvement proposals are put forward.
最后分析钻孔触探法存在的问题，并提出改进建议。
2
The borehole penetratingmethod can rapidly and accurately test the uniaxial compressive strength (UCS) of coal and rock mass.
基于钻孔触探法原理，开发出小孔径井下煤岩体强度测定装置。
3
Research mechanism of diffusion and infiltration of concrete, analyze the main influence factor of the concrete permeability and summarized the method of testing of the penetrating index of concrete.