论文部分内容阅读
利用注浆锚杆对破碎顶板条件下的综放工作面巷道进行超前加固 ,有效地控制了围岩垮落 ,为架设永久支护提供了时间和空间 ,取得了良好的技术经济效益。
The grouting bolt is applied to reinforce the roadway of fully mechanized coal caving face under the condition of broken roof, effectively controlling the caving of surrounding rock and providing time and space for erecting permanent support, which has achieved good technical and economic benefits.