摘要
注浆加固能够有效改善巷道围岩的破碎状态,针对火铺矿213石门在采用水灰比2∶1的浆液注浆效果不理想的情况,分析了巷道围岩注浆加固效果的影响因素,并通过水灰比配比实验,最终确定了采用水灰比为0.8的浆液注浆是合理的,并对注浆后巷道的顶板下沉量及两帮移近量进行了监测,监测结果表明,当采用水灰比为0.8的浆液,注浆孔深为4 m的注浆方案时,注浆加固效果比较理想,极大的改善了213石门巷道破碎围岩状态.
Grouting reinforcement can effectively improve the state of roadway fractured surrounding rock. According the fact that the grouting effect of 213 roadway of HUOPU coal mining is not ideal when water cement ratio was 2∶1 ,the influencing factors of grouting were analyses,and the reasonable water cement radio 0.8 was obtained by proportioning test.Roof convergence and two side deformation were monitoring,the result shows that：when water cement ratio is 0.8,and depth of grouting hole is 4 meter,the grouting quality is more ideal, and the state of fractured surround rock of 213 roadway is greatly improved.
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2014年第4期7-11,共5页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
国家自然科学基金资助项目(51174086
51474104)
关键词
注浆参数
水灰比
破碎围岩
注浆效果
grouting parameters
water cement ratio
fractured rock
grouting quality
