Research on the Mine Pressure Law and Development of Surrounding Rock Fissures in the First Mining Face of Hydrogeological Complex Mines
In view of the problems of complex hydrogeological,multiple faults,large water inflow in the mining and excavation working face,the development of water conducting fault zones and so on in Hongyi Coal Mine,taking the first mining face 1150401 working face as an example,the method of similar material simulation experiment is conducted to study the initial pressure,periodic pressure step distance,impact range of advanced mining,and fissures development situation of advanced mining in the first mining face through testing of coal rock physical and mechanical parameters,detection of the loose circle of the surrounding rock in the two crossheadings,and analysis of bracket working resistance.The research results provide important technical support for the safety production and water prevention and control work in Hongyi Coal Mine and even Hongdunzi mining area.
similar material simulation experimentsurrounding rock loose circlesurrounding rock fissuresupport bearing working condition
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