摘要
淮南矿业集团朱集矿主井在掘进过程中遇到基岩破碎带,该破碎带在距地表400～442 m的位置。由于破碎带厚度大且含水丰富,采用地面预注浆加固破碎带岩体,使用分支孔对注浆孔进行施工;根据注浆深度、段高的划分、注浆压力等确定注浆量。在地面预注浆施工技术应用后,朱集矿主井破碎带堵水率达到99.2%,起到了很好的加固堵水效果。
In process of main shaft excavation of Zhuji Coal Mine, Huainan Mining Group, bedrock fracture zone was encountered, the fracture zone located at the level of 400 - 442 m under the surface. Because of the fracture zone with big thickness and enriched water, surface pre - grouting technology was used to consolidate rocks in tile fracture zone. Branch holes were used for grouting boreholes. Grouting quantity was determined according to depth of grouting, division of section height, and grouting pressure. After application of the technology, water slatoff rate in rupture zone of main shaft reached at above 99.2%. Reinforcement and water shutoff effect are very good.
出处
《安徽理工大学学报（自然科学版）》
CAS
2012年第4期34-37,共4页
Journal of Anhui University of Science and Technology:Natural Science
基金
安徽省高校省级自然科学重点资助项目(KJ2011A099)
关键词
基岩破碎带
地面预注浆
注浆压力
堵水率
basic rock rupture zone
surface pre - grouting
grouting pressure
water shutoff rate
