A comprehensive test method for in-situ mechanical parameters of rock and soil

Abstract

The invention relates to a method for comprehensive testing of in-situ mechanical parameters of rock and soil bodies. Described test method, use test device to carry out uniaxial compression test, vertical bearing plate test, horizontal bearing plate test, shear resistance test and shear test to rock and soil mass sample at construction site; Described test device is according to The test is composed of test parts, which include several pressure bearing plates, jacks, displacement gauges, several pads, several dial gauges and dial gauge supports, electro-hydraulic pumps, several steel beams and several steel frame. The test method of the present invention is mainly to test the mechanical parameters of the rock and soil mass on the spot in the tunnel or roadway. The comprehensive utilization rate is high, the parameter acquisition is comprehensive, the test accuracy is high, and the economic benefit is good. The invention belongs to the technical field of rock and soil testing.

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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