镇城底矿深部回采巷道底鼓控制技术研究

Study on Floor Heave Control Technology of Deep Mining Roadway in Zhenchengdi Mine

对回采巷道的底鼓特性进行了分析,说明了巷道垂直挤压型底鼓形成的原因,针对煤矿这一现象,利用FLAC3D数值模拟软件进行了支护方案模拟,模拟针对巷道垂直型挤压底鼓的现状进行了无支护方案和底板注浆+工字钢的支护方案的对比。理论研究发现,对于垂直型挤压底鼓的支护应该尽量选择联合支护的高强度支护方案,才能严格控制好底鼓的变形量,从而达到围岩稳定。

This paper analyzes the bottom characteristics of the stope roadway,and illustrates the reasons for the vertical extrusion of the roadway bottom cladding.For the phenomenon of coal mine,the support scheme is simulated by FLAC3D numerical simulation software.Theoretical study found that the high-strength support scheme of combined support should be selected as much as possible to control the deformation of the bottom wall to achieve the stability of surrounding rock.