Sample preparation mold and sample preparation method for simulating rock mass containing irregular structural surface disturbed belt
A technology of sample preparation molds and staggered belts, which is applied in the field of rock engineering, can solve the problems that shear samples are difficult to simulate accurately, and achieve the effects of small discrete test structure, accurate simulation of rock mass structure, and high reliability
Inactive Publication Date: 2020-06-02
HOHAI UNIV
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Problems solved by technology
[0004] Purpose of the invention: Aiming at the problem that it is difficult to accurately simulate the shear samples of the rock mass containing the dislocation zone in the current laboratory experiment, the present invention provides a sample preparation mold for simulating the rock mass containing the dislocation zone of the irregular structure plane, and provides a A method for preparing rock mass samples containing dislocation zones by using the sample preparation mold
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[0024] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.
[0025] Such as figure 1 , the sample preparation mold for simulating a rock mass with a dislocation zone containing an irregular structural plane mainly includes a mold cavity 1 and a dislocation zone simulation mechanism 2 .
[0026] The mold cavity 1 is used to form the test specimen. It includes bottom and sides, figure 2 The cavity of the mold for forming a cuboid sample is shown, which includes a bottom surface and four sides. In order to facilitate demoulding, each side can be fixed by detachable connection, such as bolt connection.
[0027] Misalignment zone simulation mechanism 2 is used to simulate the position and undulation of the structural surface of the dislocation zone. The staggered belt simulation mechanism 2 includes a fixed rod 21 and several movable plates 22 stacked without gaps, such as image 3 (a)~3(c), among them,...
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Abstract
The invention discloses a sample preparation mold and a sample preparation method for simulating a rock mass containing an irregular structural surface disturbed belt. The sample preparation mold comprises a mold cavity and a disturbed belt simulation mechanism, wherein the disturbed belt simulation mechanism comprises a fixed rod and a plurality of movable plates which are arranged on the fixed rod in a penetrating mode and stacked in a gapless mode, and any movable plate can generate transverse horizontal displacement relative to the fixed rod so as to simulate relief of the disturbed belt;and the mold cavity comprises a bottom face and side faces, and the two ends of a rod body of the fixing rod are detachably installed in the mold cavity and fixed to the side faces of the mold cavity.During use, the two ends of the rod body of the fixed rod can be mounted in the mold cavity according to the position of an actual rock disturbed belt, and then the horizontal positions of the movable plate sheets are adjusted according to the shape of the structural surface of the disturbed belt, so that the movable plate sheets are consistent with the relief of the structural surface of the disturbed belt, and the rock mass containing the disturbed belt with the irregular structural surface can be simulated. The mold is high in operability, capable of accurately simulating a rock mass structure, small in test structure dispersion and high in reliability.
Description
technical field [0001] The invention relates to a sample preparation mold, in particular to a sample preparation mold for simulating a rock mass with an irregular structural plane dislocation zone and a method for preparing a rock sample based on the mold, belonging to the field of rock engineering. Background technique [0002] In water conservancy and hydropower projects, rock masses with dislocation zones are often encountered, and the strength of rock masses with dislocation zones is low, especially the undulation of the structural plane of the rock mass has a significant impact on the stability and mechanical properties of the rock mass. [0003] In the process of rock mechanics test, field test and indoor test are two common test methods. The geological conditions of the rock mass containing the fault zone are complex, and it is difficult to implement the in-situ test; moreover, due to the low strength of the rock mass containing the fault zone, the disturbance in the ...
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IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 王环玲张涛徐卫亚黄威
Owner HOHAI UNIV