深部巷道底板锚杆支护数值模拟

Numerical simulation of bolting technology of floor in deep mining

为研究深部巷道底板锚杆支护技术,采用RFPA^(2D)数值模拟软件,模拟有无底板锚杆支护情况下的深部巷道破坏情况。结果表明:有底板锚杆支护的深部巷道与无底板支护的相比,巷道周围应力分布均匀,抗破坏能力强,底鼓变形量小;巷道底角锚杆和底板锚杆对底鼓量的控制起重要作用。该结果可为深部巷道底鼓防治技术研究提供参考。

This paper is an attempt to investigate the floor bolting support technique of deep roadway, using numerical simulation RFPA software for simulating the destruction of deep roadway floor depending on the presence or absence of bolting support.The investigation shows that the deep roadways with supports exhibit more uniform stress distribution,stronger anti-destruction capability,and smaller deformation quantity in the floor heave than do the deep roadways without supports;backplane anchor points and floor bolt play an important role in controlling the floor heave quantity of the roadway.The results can provide reference for prevention and control technology in the floor heave of deep roadway.