一种新型防治冲击地压注水中空锚杆

A kind of hollow anchor for water injection to prevent rock burst

煤层注水卸压可减小冲击地压发生的可能性,但钻孔及注水破坏了煤体的完整性,一定范围和程度上减弱了巷道围岩强度,不利于冲击地压危险巷道抵御动载破坏。一种防治冲击地压的注水中空锚杆既可进行煤层注水,降低煤体应力,又提高了煤体支护强度,二者结合能够提高防治冲击地压效果。

Coal seam water injection and pressure relief can reduce the possibility of rock burst,but drilling and water injection can damage the integrity of the coal body,weaken the strength of surrounding rock of the roadway to a certain extent,and is not conducive to resist dynamic load damage of the dangerous roadway of rock burst.This paper introduced a kind of water injection hollow bolt used for prevention and control of rock burst,which can not only inject water into coal seam and reduce coal stress,but also improve the supporting strength of coal body,so as to improve the effect of rock burst prevention.