A study of support strategies in deep soft rock:The horsehead crossing roadway in Daqiang Coal Mine  

作　　者：Guo Zhibiao Yang Xiaojie Bai Yunpeng Zhou Feng Li Erqiang 

机构地区：[1]State Key Laboratory of Geomechanics and Deep Underground Engineering, China University of Mining & Technology. Beijing 100083, China [2]School of Mechanics and Civil Engineering, China University of Mining and Technology. Beijing 100083, China

出　　处：《International Journal of Mining Science and Technology》2012年第5期665-667,共3页矿业科学技术学报（英文版）

基　　金：supported by the National Basic Research Program of China (No.2006CB202200);the Ministry of Education Innovation Team Project (No. IRT0656);the Central University Basic Research Special Fund Operating Expense (No.2009QL06);the New Century Excellent Talents Support Projects of Ministry of Education (No.NCET-08-0833);the National Natural Science Foundation of China (No.41040027)

摘　　要：Geomechanics in deep mines becomes more complex and structural support in soft rock can be very difficult.Highly stressed soft rock subject to expansion deformation is particularly difficult to control.The Tiefa Coal Industry Group Daqiang Coal Mine is used as an example.A ventilation shaft,à550 horsehead,is located in tertiary soft rock.Analysis of the reasons for deformation shows an intumescent rock,which is easily damaged.Field observations and theoretical analysis led to a design capable of stabilizing the rock.A combination of spray,anchors,anchor bolts,and soft corner coupled truss supports allowed the deformation to be controlled.This provides a model for similar designs when support of a horsehead roadway is required.Geomechanics in deep mines becomes more complex and structural support in soft rock can be very difficult.Highly stressed soft rock subject to expansion deformation is particularly difficult to control.The Tiefa Coal Industry Group Daqiang Coal Mine is used as an example.A ventilation shaft,à550 horsehead,is located in tertiary soft rock.Analysis of the reasons for deformation shows an intumescent rock,which is easily damaged.Field observations and theoretical analysis led to a design capable of stabilizing the rock.A combination of spray,anchors,anchor bolts,and soft corner coupled truss supports allowed the deformation to be controlled.This provides a model for similar designs when support of a horsehead roadway is required.

关 键 词：Deep well Soft rock Horsehead Deformation mechanical mechanism Coupling support 

分 类 号：TD353.6[矿业工程—矿井建设] TD353