A non-disturbed on-site sliding surface shear index test device

Abstract

The invention discloses a non-disturbance on-site slide face anti-shear index testing device. The non-disturbance on-site slide face anti-shear index testing device comprises an operation platform (200) on the ground and a rigid bucket arranged in a hole, wherein the operation platform (200) is provided with a counter-force frame (210), a hydraulic jack (230), connection rods (240) and a graduated scale (250); the rigid bucket is divided into a right rigid bucket (300) and a left rigid bucket (310); a high-strength rubber inner bag (320) is embedded between the two rigid buckets; the lower ends of the two connection rods (240) are correspondingly connected with the two rigid buckets; a high-pressure pump (100) is communicated with the high-strength rubber inner bag (320) through a compression-resisting oil pipe (110); the compression-resisting oil pipe (110) is provided with an oil pressure meter (120) for reading oil pressure in the high-strength rubber inner bag (320). The non-disturbance on-site slide face anti-shear index testing device has the advantages that the pressure stress of a rock-soil body can be directly read from the oil pressure meter, the shear stress of the rock-soil body can be directly read from readings of the electronic hydraulic jack, and a horizontal displacement of the rock-soil body is directly read from the graduated scale.

Description

technical field [0001] The invention belongs to rock and soil parameter testing technology, in particular to a testing device applied to indicators such as shear strength, internal friction angle and cohesion of non-disturbed on-site sliding surfaces Background technique [0002] In the analysis and evaluation of the stability of the sliding surface, the most important thing is to determine the shear strength parameters of the rock and soil at the sliding surface. If the measured indicators of rock-soil shear strength are not accurate enough, the final analysis results will have large errors from the real situation. Therefore, how to accurately measure the parameters of rock-soil shear strength at the sliding surface is It becomes the basis and premise of correctly analyzing the stability of sliding surfaces. The shear strength index of rock and soil, especially the shear strength index of the structural plane, plays a vital role in the stability analysis of the sliding sur...

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Problems solved by technology

[0004] At present, the stability analysis of the sliding surface adopts the indoor test to measure the shear strength index of the rock-soil interface at the sliding surface and the weaker structural surface around it, while the indoor test needs to take samples first, and then process them in the laboratory. The disturbance of the soil is large

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