Mining rock mass three-dimensional stress monitoring equipment and method

Abstract

The invention discloses mining rock mass three-dimensional stress monitoring equipment which comprises an equipment base body, a measuring device, an underground transmission base station and a ground signal transmission base station. The equipment base body is a column body made of a microcrystalline glass material, crossed fiber gratings are arranged on six surfaces of a cube in the equipment base body, and the included angle of the fiber gratings is 45 degrees. According to the mining rock mass three-dimensional stress monitoring equipment and method, the stress state of the underground surrounding rock mass can be accurately and effectively known, an important role and guidance are played in surrounding rock stability analysis and underground engineering safety excavation production, engineering geological dynamic disasters are effectively predicted and early warned, and the mining rock mass three-dimensional stress monitoring equipment and method have the advantages of being high in practicability and the like. And the requirements of green, safe and efficient production of mines are fully met.

Description

technical field [0001] The invention relates to the technical field of coal and rock mass stress monitoring and coal mine safety mining, in particular to a three-dimensional stress monitoring device and method for mining rock mass. Background technique [0002] Coal is one of the main energy sources in my country. With the gradual increase in the mining intensity and depth of coal resources in my country, deep coal and rock masses are in complex and harsh engineering geological conditions such as high ground stress, high temperature, high water pressure, and high gas. Dynamic disasters such as coal and gas outbursts and compound dynamic disasters occur frequently. In-situ stress is the fundamental force that causes deformation and destruction of mining and other underground projects. The size and direction of the in-situ stress field have a significant impact on the occurrence of engineering geodynamic disasters. Of course, in recent decades, experts and scholars at home and...

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Problems solved by technology

[0003] At present, experts and scholars at home and abroad have done a lot of work on the monitoring of side stress. The most commonly used equipment and methods are to monitor the stress state through borehole stress gauges or pressure cells. Two-way stress, but it can only reflect the stress state on one plane. For the coal and rock mass in three-dimensional space, it cannot fully reflect the actual geological situation. The research on its stress and deformation characteristics ignores a lot of information. there are certain errors

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