Lateral confinement condition adjustable rock-soil body vertical-compression aided testing device

Abstract

The invention discloses a lateral confinement condition adjustable rock-soil body vertical-compression aided testing device. The lateral confinement condition adjustable rock-soil body vertical-compression aided testing device comprises a base plate, a left side wall, a right side wall, a front side wall, a rear side wall, a thread, a bolt, a pressure transfer module, a displacement sensor and a comparison side table. The base plate and the side walls can aid six vertical-compression tests of indoor lateral confinement freeing, single-face lateral confinement, adjacent-face lateral confinement, opposite-face lateral confinement, three-face lateral confinement and complete-side lateral confinement conducted by a conventional press machine on a rock-soil body sample through flexible mounting and dismounting. Displacement sensors are directly distributed on the free face of the cubic sample, and real-time acquisition of displacement data of the rock-soil body sample in the vertical or horizontal direction can be achieved after computer connection through a data line. Compared with the prior art, the problem that the working condition of lateral confinement is relatively simple in implementation by adopting an existing technological means is creatively solved by adopting the design scheme.

Description

[0001] Technical field [0002] The invention relates to a vertical compression auxiliary test device, in particular to an auxiliary test device for performing a vertical compression test of rock and soil with the help of a servo press in the field of geotechnical engineering, that is, the vertical compression of rock and soil with adjustable boundary conditions Auxiliary test device. Background technique [0003] For rock and soil mass during service, the difference in confining pressure state, especially the existence of free surface will affect its mechanical properties. According to the location of the rock and soil mass in the building structure or in nature, and considering the number and relative positions of the free surfaces, the compression conditions can be simplified into six situations, which are: ① Unconfined compression conditions, such as Ordinary rock column; ②Single-sided lateral compression condition, such as a rock column with a backing surface; ③Adjacency...

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Problems solved by technology

[0008] In order to solve the problem of high cost, complicated operation, high energy consumption, poor practicability and difficulty in simulating all the above six working conditions of the rock and soil mass when using a true triaxial testing machine in the study of the strength and deformation of the rock and soil mass in the prior art, etc. Problem, the present invention provides a confinement condition that is simple in structure, convenient in operation, low in cost, high in practicability, low in energy consumption, can be measured and recorded in real time, and can simulate the aforementioned six soil confinement and compression conditions Adjustable rock and soil vertical compression auxiliary test device

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