摘要
以某矿风井巷道围岩松散破坏的维护技术为例,从提高围岩整体结构强度的角度出发,提出了在原支护条件下对被保护巷道进行注浆加固的方案。对锚注工艺的流程、材料设备、施工措施作了详尽的论述,并用数值模拟软件UDEC模拟分析注浆技术的关键因数。研究水泥浆液比例与注浆压力对浆液扩散范围的影响。从现场实践的效果来看,注浆技术的采用提高了浅部岩体的围岩强度,改善了力学性能,从而使巷道在采用锚索支护时,能够显著提高锚索的锚固力,形成有效的承载结构。验证了锚注支护理论。
Taking the maintenance technology for a mine roadway with failed soft surrounding rocks as an example,from the view to improve the strength of the completed surrounding rock structure,the paper provided a plan to have a grouting reinforcement for the mine protective roadway under the previous support conditions.The paper had a detail introduction on the processing,material equipment,construction measures for the bolt and grouting technology.With the numerical simulation software and UDEC simulation,the pape...
出处
《煤炭科学技术》
CAS
北大核心
2007年第7期51-55,共5页
Coal Science and Technology
关键词
锚注原理
注浆材料
UDEC
注浆压力
浆液扩散范围
bolt and grouting principle
grouting material
UDEC
grouting pressure
grouting expended area
