综放工作面采空区密闭墙主要技术参数研究

Research on Main Parameters of Mined-out Area Closed Wall in Fully Mechanized Caving Face

为解决综放工作面采空区密闭墙构筑位置与构筑厚度不合理导致的密闭墙受压易致裂、浪费材料等问题。本文采用理论分析和数值模拟的方式,对4320综放工作面采空区密闭墙的构筑位置与构筑厚度进行研究,结果表明:采空区密闭墙的最佳构筑位置在距回风巷4m处;密闭墙合理厚度为2 m。

In order to solve the problem that the mined-out area closed wall of the fully mechanized caving faceis cracked and wasted due to the unreasonable construction position and the thickness of the closed wall. In this paper, theoretical analysis and numerical simulation are used to study the construction position and thickness of the mined-out area closed wall in the 4320 fully mechanized caving face. The results show that the best position is 4m far away from the intersections of contact roadway and return airway, reasonable closed wall thickness is 2 m.