Rock and soil disintegration test device as well as using method

Abstract

The invention discloses a rock and soil disintegration test device as well as a using method. A base is connected with fulcrum bars; a vertical stretching valve is connected with the fulcrum bars respectively; a fulcrum bar is provided with a horizontal stretching valve, and a second hook is hung on the fulcrum bar; one end of a spring-loaded thrust meter is connected with the second hook; the lower part of the other end of the spring-loaded thrust meter is connected with the hook; copper wires are fastened to four edge corners of a metal grid net, and at the other end, the copper wires are twisted into a strand to be hung on the hook; rock and soil test samples are placed on the metal grid net, and then are immersed into a flask. The using method of the rock and soil disintegration test device comprises the following steps: (1) a no-load test, namely pouring distilled water into the flask, and recording the reading number F0 on the spring-loaded thrust meter; (2) rock and soil test sample manufacture, namely manufacturing a soil test sample and a rock test sample respectively by a cutting ring and a cutter; (3) a disintegration test, namely placing the rock and soil test samples on the metal grid net, and immersing into water, thus completing the test; (4) data processing. The rock and soil disintegration test device is simple in structure, easy to assemble and debug, low in cost, high in precision, good in stability and high in applicability, and can be widely applied to rock and soil engineering science research.

Description

technical field [0001] The invention relates to a rock and soil disintegration test device and a use method thereof, in particular to an engineering test device for measuring the disintegration of rock and soil, and also to a method for using the engineering test device for measuring the disintegration of rock and soil. Background technique [0002] The disintegration of rock and soil refers to the phenomenon that rock or soil is broken and scattered due to water immersion. The reason for the disintegration is that after the rock and soil body is submerged in water, the situation of water entering the pores or cracks is unbalanced, which causes the speed of the thickening of the intergranular diffusion layer to be unbalanced, so that the intergranular repulsion exceeds the suction force. Stress concentration is generated, and the rock and soil body collapses along the surface where the repulsive force exceeds the maximum suction force. At present, the research on the disint...

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Problems solved by technology

However, these methods generally have some disadvantages. For example, the first two test instruments and methods need to manually determine the stable state of the test submerged in water, and keep the buoy upright; the latter two methods have very high requirements on the material of the inner cylinder.

Moreover, these methods are all measured according to the displacement, and then calculate the disintegration-related parameters of the rock and soil. The accuracy of the measurement of the drainage device is very high, which leads to problems such as low accuracy of the test results and unsatisfactory treatment of the test results.

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