Rock-soil body in-situ mechanical parameter comprehensive test method

Abstract

The invention relates to a rock-soil body in-situ mechanical parameter comprehensive test method. The test method comprises the following steps: performing an uniaxial compression test, a vertical pressure bearing plate test, a horizontal pressure bearing plate test, an anti-shear test and a shear test for a rock-soil body test sample in a construction field by using a test apparatus, wherein thetest apparatus is formed by test parts according to the test, and the test parts comprise a plurality of pressure bearing plates, a jack, a displacement meter, a plurality of cushion blocks, a plurality of dial indicators, a plurality of dial indicator supporting seats, an electric hydraulic pump, a plurality of steel beams and a plurality of steel supports. The test method disclosed by the invention is mainly used for on-site testing mechanical parameters of the rock-soil body in a tunnel or a roadway; and the test apparatus is not only easy to assemble and convenient and easy, but also can comprehensively test a plurality of parameters, and is high in rock-soil body test sample comprehensive utilization rate, comprehensive in acquiring parameters, high in test accuracy and good in economical benefit. The invention belongs to the technical field of rock-soil body test.

Description

technical field [0001] The invention relates to a comprehensive test method for in-situ mechanical parameters of a rock and soil body, belonging to the technical field of rock and soil body testing. Background technique [0002] The mechanical parameters of rock and soil are the key parameters for the analysis and evaluation of the stability of tunnel engineering and underground engineering, and the premise of analyzing the stability of the engineering and making a correct scientific evaluation. The mechanical parameters of rock and soil are affected by various complex factors such as the state of rock and soil structure, construction disturbance factors, and ground stress. The mechanical parameters of rock and soil are very complicated. test; [0003] Indoor test is a commonly used method for testing rock and soil mechanical parameters. Its advantages lie in its good test environment, mature test methods, and easy control of test equipment. However, the test samples must b...

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Problems solved by technology

[0003] Indoor test is a commonly used method for testing rock and soil mechanical parameters. Its advantages lie in its good test environment, mature test methods, and easy control of test equipment. However, the test samples must be obtained from the site. The original structure of the sample is easily disturbed or damaged. In addition, due to the limitation of the size of the test equipment, in order to meet the test requirements, the sample size is small, the effect of the rock and soil structure is not obvious, and the original stress mechanical environment is difficult to achieve. The above factors affect the test results. Due to the objectivity of the rock and soil mechanical parameters measured and the actual parameters there is a big difference

[0004] The in-situ test of rock and soil mass produces samples on site. The size effect and initial stress environment are close to the real environment, and the obtained data is relatively reliable. not tall

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