Regularity of Strata Behaviors under Roof Drainage Condition and Its Prevention and Control Measures
Roof drainage brings about strata behaviors,which affects mine safety production.In order to reduce the influence of roof drainage on the mining face,based on the analysis of the law of strata behaviors under the condition of roof drainage,the corresponding prevention and control measures were put forward.The prevention and control measures mainly include:depressurization of large diameter borehole,strengthening roadway support,and increase the critical stress of strata behaviors by changing the control quantity of coal and rock deformation system;control the mining speed and roof deep-hole blasting pre-cracking,reduce the actual external stress of the coal-rock deformation system,and reduce the risk of mine pressure.It can provide some technical reference for the prevention and control of strata behaviors caused by roof drainage.
万方数据
维普
