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Three-dimensional disturbance stress testing method for stope surrounding rock

A technology for stress testing and surrounding rock, which is applied in the direction of measuring the change of optical properties of materials when they are stressed, and can solve the problems of inability to obtain the stress changes of surrounding rocks, so as to achieve three-dimensional measurement and long-term measurement without difficulty. damaged effect

Inactive Publication Date: 2018-01-02
兖矿能源集团股份有限公司 +1
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Problems solved by technology

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is expected to provide a three-dimensional stress test method for the surrounding rock disturbance stress field, to solve the above-mentioned problem that the real surrounding rock stress change situation cannot be obtained, and to make the three-dimensional stress test method for the surrounding rock stress field be realized

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  • Three-dimensional disturbance stress testing method for stope surrounding rock
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  • Three-dimensional disturbance stress testing method for stope surrounding rock

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all embodiments of the present invention. For ease of description, only parts related to the invention are shown in the drawings.

[0026] It should be noted that, where there is no conflict, the components of the embodiments of the invention generally described and illustrated in the drawings may be arranged and designed in various different configurations. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary...

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Abstract

The invention discloses a three-dimensional disturbance stress testing method for stope surrounding rock. The method comprises the following steps: arranging a testing meter at a to-be-measured pointof a surrounding rock drill hole, wherein at least six strain sensors which are not parallel to one another are arranged on the testing meter, and the distances from the strain sensors to the testingmeter are equal; filling the gap between the testing meter and the drill hole with colloid, so that the testing meter and the surrounding rock are solidified into a whole; and acquiring strain data ofthe to-be-measured point through the strain sensors, acquiring azimuth information of the strain sensors, combining a drill hole surrounding rock strain distribution formula of elastic mechanics according to elasticity modulus and Poisson's ratio of an occurrence body of the strain sensors and the azimuth information of the strain sensors, converting the strain data into disturbance stress data of surrounding rock, and further obtaining the disturbance stress state at the measuring point.

Description

technical field [0001] The invention belongs to the technical field of stress testing of underground engineering such as rock and soil, mining, etc., and in particular relates to a three-dimensional disturbance stress testing method of stope surrounding rock. Background technique [0002] With the increase of mining depth and mining intensity of coal resources, rock burst has become one of the main disasters faced by coal mining fields at home and abroad. Mining engineering, especially coal mines, has complex geological environment and stress conditions. Under the joint action of high ground stress and strong unloading, the surrounding rock of the roadway working face redistributes the mining stress, the relationship between time and space is complex, and the coal rock caused by high stress release, transfer, and transmission The dynamic characteristics of the body are obvious, and under certain conditions, it will cause rock burst dynamic disasters, which will seriously aff...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/24
Inventor 王富奇陈卫忠邓小林王春耀邢天海曲延伦郭现伟赵武胜程文武
Owner 兖矿能源集团股份有限公司
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