Underground rock mass engineering ground pressure management and control method

Abstract

The invention discloses an underground rock mass engineering ground pressure management and control method. The method comprises the following steps that firstly, a ground pressure displaying rule is researched (Study) and disclosed so as to obtain a stress rise area, a stress reducing area, a tensile stress area and a rock mass moving angle in an underground mine rock mass; secondly, mining area ground pressure transfer (Transter) is guided, and a horizontal cutting roadway and a vertical cutting groove mode are used in the underground mine rock mass to guide the stress in a mining area to be transferred; thirdly, by means of mining area high-stress collapse is used (Use), the impact potential hazard of stress concentration on a top plate of a goaf is eliminated, and meanwhile, a covering layer required by recovery is formed; fourthly, the ground pressure of an operation area is controlled (Control), a stoping roadway is supported by means of an internal reinforcement mode of an anchor rod or an anchor cable, passive control of the ground pressure is converted into active management, ground pressure display like collapse and wall caving is controlled, and the stoping safety is guaranteed.

Description

technical field [0001] The invention relates to a ground pressure management method for rock mass engineering, in particular to a ground pressure management and control method for mining surrounding rocks in underground mines, which can be widely used in rock mass underground projects such as mines, tunnels, and subways, and is especially suitable for underground mines Ground pressure management and control in deep mining. Background technique [0002] Before excavation, the underground rock mass of the mine bears the weight of the overlying strata and other forces and is in a balanced state, which is called the original stress balance state. Once the ore mass is excavated or there is an excavation project nearby, its original stress balance state will be destroyed, and the stress in the ore mass will be redistributed to achieve a new balance. In the process, the secondary stress field During the secondary distribution process, a stress concentration area and a stress reduc...

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Problems solved by technology

[0005] Although the above literature and other existing achievements have proposed some methods for analyzing the law of ground pressure, controlling ground pressure and unloading mining, these management modes of ground pressure are obviously lacking in systematicness and dynamics, and do not fully reflect the characteristics of rock mass in rock mass engineering. Inherent specificity and complexity of dynamic changes in stress field during excavation

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