深井沿空巷道快速掘进及围岩控制技术研究  

Study on the TEchnology of Fast Tunneling Along Gob and Surrounding Rock Control of Deep Well

作　　者：孙兴平[1] 张东[1] 张瑞[1] 张大欢[1] 王立冬[1] SUN Xingping;ZHANG Dong;ZHANG Rui;ZHANG Dahuan;WANG Lidong(Huainan Mining(Group)Co.Ltd.,Guqiao coal mine,Huainan Anhui 232001,China)

机构地区：[1]淮南矿业集团顾桥煤矿,安徽淮南232001

出　　处：《安徽理工大学学报（自然科学版）》2021年第3期64-71,共8页Journal of Anhui University of Science and Technology:Natural Science

摘　　要：深埋煤矿采掘衔接紧张是制约矿井安全高效生产的主要问题之一,回采巷道的快速掘进将有利于缓解这一紧张局面。以顾桥煤矿1126(1)回风巷为例,利用弹塑性理论分析了1125(1)工作面侧向应力分布规律及分区破坏特征,阐明了1126(1)回风巷围岩应力环境;利用FLAC3D数值模拟研究了掘进期间锚索“1-0”、“2-0”、“3-0”、“4-0”等不同布置形式对巷道围岩变形及应力分布特征的影响,通过巷道围岩稳定性对比分析,降低巷道掘进期间支护强度,采用“2-0”锚索布置的初始支护控制掘进期巷道围岩变形,使掘进工作面后方永久支护与掘进平行作业,从而提高了掘进效率。The tight connection of deep mining is one of the main problems that restrict the safe and efficient production of the mine.The rapid excavation of the mining roadway will help to alleviate this tension.Taking the 1126(1)track of Guqiao Coal Mine as an example,the lateral stress distribution law and zonal failure characteristics of 1125(1)working face are analyzed by using the elastic-plastic theory,and the stress environment of 1126(1)track is obtained.The deformation and stress characteristics of the surrounding rock of roadways with different arrangement of anchor cables such as 1-0,2-0,3-0 and 4-0 are studied by numerical simulation FLAC3D.By reducing the initial support strength during the tunnel excavation and adopting 2-0 anchor cable arrangement to control the deformation of the surrounding rock during the excavation,the permanent support behind the excavation face can be operated in parallel with the excavation,which will improve the excavation efficiency.

关 键 词：沿空掘巷 初始支护 快速掘进 平行作业 

分 类 号：TD322[矿业工程—矿井建设]