摘要
为了实现千米深井软岩巷道的围岩控制,针对口孜东矿埋深大、岩性软、地应力高等复杂地质条件导致巷道变形大且支护困难的现状,依据地应力测试结果,对比分析了锚网类复合支护和钢管混凝土支护下围岩的破坏方式,提出采用锚架充支护技术并成功应用于实践。实践应用表明,采用锚架充支护技术可有效控制巷道围岩变形,巷道返修率大大降低,巷修人员减少75%以上,经济和社会效益显著提高。
For the purpose of realizing the control of surrounding rock in large deformation soft rock roadway in kilometer deep mine with the complex conditions such as the large buried depth,softness of rock mass and high in-situ stress in Kouzidong Mine,according to the in-situ stress test results,the destruction modes of steel tubular confined concrete support and compound support system of rock bolting and anchor net were compared,the technique of U-shaped bolting steel-filling support system was put forward and successfully implemented.The practical results showed that the application of U-shaped bolting steel-filling support system can effectively control the deformation of roadway surrounding rock,and the roadway repairing rate was greatly reduced and the number of roadway repair works was reduced by more than 75%,which resulted in significant improvement of economic and social benefits.
作者
李冰冰
姜鹏飞
焦金宝
程利兴
张群涛
Li Bingbing;Jiang Pengfei;Jiao Jinbao;Cheng Lixing;Zhang Quntao(China Coal Xinji Fuyang Mining Co.,Ltd.,Fuyang,Anhui 236153,China;Coal Mining and Design Department,Tiandi Science and Technology Co.,Ltd.,Chaoyang,Beijing 100013,China;Xinji Energy Co.,Ltd.,China Coal Group Corp.,Huainan,Anhui 232170,China)
出处
《中国煤炭》
2019年第1期61-65,共5页
China Coal
基金
国家重点研发计划项目(2017YFC0603003)
国家自然科学基金项目(51704160)
中国煤炭科工集团国际合作项目(2018GH001)
关键词
千米深井
软岩巷道
大变形
锚架充支护
巷道返修率
kilometer deep mine
soft rock roadway
large deformation
U-shaped bolting steel-filling support
roadway repairing rate
作者简介
李冰冰(1980-),男,江西德安人,工程师,硕士研究生,2005年毕业于安徽理工大学,主要从事煤矿开采技术及管理工作。
