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On-site sampling method of dislocation interface-containing rock body

A technology of dislocation zone and rock mass, applied in the direction of sampling device, etc., can solve the problem of reducing rock strength

Active Publication Date: 2018-03-09
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

The existence of these weak structural planes greatly reduces the strength of the rock itself, and even directly controls the stability of the entire underground cavern. How to obtain rock samples representing the basic physical and mechanical characteristics of the rock mass in the laboratory and conduct related tests on them Testing is an urgent problem to be solved

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  • On-site sampling method of dislocation interface-containing rock body
  • On-site sampling method of dislocation interface-containing rock body
  • On-site sampling method of dislocation interface-containing rock body

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Embodiment Construction

[0021] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0022] see Figure 1-4 , an in-situ sampling method for rock mass containing a dislocation zone, the specific steps are as follows:

[0023] 1) In the selected sampling area, the masonry removes the weathered layer and loose layer, so that the cutting surface is consistent with the occurrence of the dislocation zone, and a plane of 1m×2m is made. The fluctuation difference of the sample range is less than 0.5cm. Clean up, draw the general layout of the sample, a simplified geological map of the sample area, a geological description map of the sample and combine photography, and arrange the sample with a set-out board. The sample size is 140mm×140mm×200mm, and the distance between samples is greater than 10cm;

[0024] 2) Use the wax sealing method to maintain the natural water content of the dislocation zone. Choose a wooden strip with the same wi...

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Abstract

The invention discloses an on-site sampling method of a dislocation interface-containing rock body. The on-site sampling method specifically comprises the following steps: clearing away a weathered layer and a loosened layer from the selected sampling section, so as to lead the cutting surface to be identical with the occurrence of a dislocation interface and make a 1m*2m plane, clearly away a test surface cleanly, drawing a test sample general layout, a test sample region geology simple graph, test sample geology descriptive graph and combining photograph, and distributing test samples with asample layout board; and keeping the natural moisture content of the dislocation interface by adopting a wax sealing method, selecting a lath with thickness of 0.5cm, melting paraffin with a small barrel, evenly smearing the initially condensed paraffin on a to-be-sealed lath with a lath after the paraffin is initially condensed. The obtained test sample can be used for performing experimental study on the shearing mechanical characteristic of a dislocation interface-containing non-continuous surface, including a normal load and normal rigidity shearing mechanical experiments; in addition, sampled or unsuccessfully processed test samples contain small dislocation interface disturbance, and can be used for producing true triaxial test samples of a combined body of a dislocation interface original sample and mother rock.

Description

technical field [0001] The invention relates to a rock mass sampling method, in particular to an in-situ sampling method for a rock mass with a dislocation zone. Background technique [0002] In the long process of geological evolution, intact rocks have been subjected to various tectonic geological actions, resulting in various weak structural planes. The existence of these weak structural planes greatly reduces the strength of the rock itself, and even directly controls the stability of the entire underground cavern. How to obtain rock samples representing the basic physical and mechanical characteristics of the rock mass in the laboratory and conduct related tests on them Testing is a problem that needs to be solved urgently. Contents of the invention [0003] The purpose of the present invention is to provide an in-situ sampling method for rock masses containing dislocation zones, so as to solve the problems raised in the above-mentioned background technology. [000...

Claims

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Application Information

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IPC IPC(8): G01N1/08
CPCG01N1/08
Inventor 徐鼎平江权汪志林王玮樊波
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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