沿空留巷巷旁支护充填加固技术数值模拟研究

Numerical Simulation Research on Roadside Packing Reinforcement Technology of Gob-side Entry Retaining

采用数值模拟方法,研究了霍尔辛赫矿3501工作面沿空留巷巷旁充填及加固技术条件不同时,对巷道受力变形的影响规律,得到充填体宽度为2 m,水灰比1.5∶1,将充填体布置于巷道内0.4 m为充填体支护最佳方案,采用对拉锚杆直径为22 mm、间排距为800 mm×800 mm的加固方案。

Using numerical simulation method,the author studies the influence of different filling and reinforcement technical conditions of gob-side entry retaining of the 3501 working face of Holsinghe Colliery on the stress deformation of the roadway,whose results show that the width of the filling body is 2 m,and the water cement ratio is 1.5 to 1.The best plan for supporting the filling body is to arrange the filling body 0.4 m inside the roadway.using a diagonal anchor rod with a diameter of 22 mm and a spacing of 800 mm×800 mm reinforcement plan。