Method and device for testing loose circle of surrounding rock

A technology of a surrounding rock loosening ring and a testing method, which is applied to measuring devices, instruments, and fluid devices, etc., can solve the problems of expensive, time-consuming and laborious testing costs, and achieve the effects of simple structure, accurate thickness or depth, and simple operation.

Inactive Publication Date: 2013-07-24
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
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  • Application Information

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Problems solved by technology

[0014] In the process of realizing the present invention, the inventor found that the current methods for meas

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  • Method and device for testing loose circle of surrounding rock
  • Method and device for testing loose circle of surrounding rock
  • Method and device for testing loose circle of surrounding rock

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Embodiment Construction

[0052] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0053] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] see figure 1 As shown, the embodiment of the present invention a kind of testing method of surrounding rock loose circle, comprises steps:

[0055] S1. Drilling holes into the surrounding rock in a direction perpendicular to the side wall of the surrounding rock;

[0056] The boreholes therein can be specially drilled for testing the loose circle of surrounding rock, or drilled for installing anchor rods or anchor cables.

[0057] S2. Inject pressure fluid into at least two predetermined hole sections in the...

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Abstract

The invention discloses a method and a device for testing a loose circle of surrounding rock, relates to the technical field of testing of the loose circle of the surrounding rock and aims at enabling the operation to be simpler and the test to be more precise. The method comprises the following steps of injecting fluid into at least two preset hole sections of a drill hole in a preset time period under a preset pressure condition; and determining the thickness of the loose circle of the surrounding rock according to the flow rate difference of the fluid injected into the at least two preset hole sections. The device for testing the loose circle of the surrounding rock comprises a test tube, at least two capsules, through holes and a flow meter, wherein the at least two capsules are arranged on the periphery of the test tube at intervals; the through holes are arranged in a tube section of the test tube between each two adjacent capsules; fluid inputted in the tube section between each two adjacent capsules only can flow out through the through holes in the tube section between each two adjacent capsules; an outlet of a capsule expansion medium conveyance tube is arranged in one of the capsules so that the interiors of each two adjacent capsules are communicated through a pipeline; and the flow meter is arranged on the pipeline of a test fluid conveyance pipe. The method and the device for testing the loose circle of the surrounding rock, disclosed by the invention, are suitable for the tests in the thickness of the loose circle of the surrounding rock and the distribution of fracture regions of the loose circle.

Description

technical field [0001] The invention relates to testing of surrounding rock loose circles, in particular to a testing method and testing equipment for surrounding rock loose circles. Background technique [0002] The existence of loose circles in the excavation of surrounding rocks in underground chambers is a common phenomenon, which mainly comes from the volume expansion of the fractured rock mass in the loose circles, while the supporting object of underground chambers is mainly the crushing deformation in the formation of loose circles. thicker, the greater the deformation force of the surrounding rock, the more difficult the support will be. So far, the distribution of loose circles has been obtained by field measurement. [0003] There are many methods for measuring loose rings, which can be roughly divided into two categories: one is direct observation and comparison method, and the other is physical method. [0004] (1) Direct observation and comparison methods com...

Claims

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Application Information

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IPC IPC(8): G01B13/06G01B13/14
Inventor 李学彬杨仁树
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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