矿井深部巷道围岩变形浅析及控制

Abstract

Abstract:

After mine roadway in deep ground are excavated, they are encircled in scope of surrounding rock, which possesses three properties of cracking, plasticity and elasticity. The mechanical analysis of mechanical properties of the scope of these three kinds of circle level is made, through calculating the surrounding rock in mine roadway; and then the distortion mechanism is expounded. The stress-strain expression within the rock plastic circle is derived, so as to provide a theoretical support to choose the roadway support mechanisms, to control the expansion of the fracture scope economically and effectively, to improve their stress states, to improve their own residual strength and the carrying capacity, and to choose the system of protecting synthetically in deep mines.

Key words: deep ground of mine, surrounding rock of roadway, mechanical analysis, control method

CLC Number:

TD 163

LI De-zhong, LI Bing-bing, TAN Yuan-yuan. Analysis and control of distortion of surrounding rock of roadway at deep ground of mine[J]., 2009, 30(1): 109-112.

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Analysis and control of distortion of surrounding rock of roadway at deep ground of mine

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