深井高水平应力巷道锚注支护治理底鼓数值模拟研究

Numerical Simulation Study on the Bolting and Grouting Support Controlling Floor Heave Rock Roadwayin Deep High Horizontal Stress

底鼓治理是巷道支护的难题之一,也是巷道支护的重点和关键。针对深井巷道底鼓治理难题,通过数值模拟分析了底板无支护、锚固支护、锚注支护后围岩应力应变规律,揭示了高水平应力对深井巷道底鼓的影响,验证了锚注支护不仅能够有效控制深井高水平应力巷道底鼓且对两帮稳定影响甚小。

Controlling floor heave of roadway is one of difficult problem, also is the key of roadway supporting. Aiming at the difficult problem of controlling the floor heave in deep roadway, according to numerical simulation, the stress - strain law of surrounding rock was analyzed after different support pattern which included without support, anchorage support, bolt - grouting support, the high hori- zontal on the influence of the floor heave of deep roadway, the fact was verified that bolting - grouting can not only effectively control y floor heave of deep high stress roadway and little influence on stability of two sides.