软弱围岩巷道掘进断面形状优化模拟  

Optimization Simulation of Section Shape of Roadway with Weak Surrounding Rock

作　　者：曾福英[1] ZENG Fu-ying(Henan Technical College of Construction,Zhengzhou 450064,China)

机构地区：[1]河南建筑职业技术学院,郑州450064

出　　处：《煤炭技术》2018年第9期106-108,共3页Coal Technology

摘　　要：针对某矿井10~#煤掘进断面布置在厚松软煤层中的工程实践,采用FLAC^(3D)数值模拟的方式,以不同侧压系数下的围岩受力状态为基础,研究了4种不同巷道断面的围岩应力、位移及塑性区破坏情况。研究结果显示矩形断面具有既能够达到快速形成回采系统又能够保证巷道的稳定的特点,同时为相似条件下软弱围岩巷道掘进提供了一定指导。In view of the engineering practice of 10#coal excavation section in a thick soft coal seam,adopts FLAC3 Dnumerical simulation method, based on the stress state of the surrounding rock under the different side pressure coefficient, and studies the stress, displacement and the failure condition of the plastic zone in the four different roadway sections. The results show that the rectangular section has the characteristics that can not only achieve the rapid formation of the recovery system, but also ensure the stability of the roadway. At the same time, it provides a certain guiding for the tunnel excavation in the soft surrounding rock under similar conditions.

关 键 词：软弱围岩 掘进断面 优化模拟 

分 类 号：TD263.1[矿业工程—矿井建设]