大采高工作面底板破坏深度实测与数值模拟  

Field Measurement and Simulation Research on Floor Failure Depth with Large Mining Height Face

作　　者：周杨[1,2,3] 

机构地区：[1]西安科技大学,西安710054 [2]中煤科工集团西安研究院有限公司,西安710054 [3]陕西省煤矿水害防治技术重点实验室,西安710077

出　　处：《煤炭技术》2017年第10期43-45,共3页Coal Technology

基　　金：国家自然科学基金青年基金项目(41402220)

摘　　要：针对寺河矿3~#煤层带压开采问题,选取W2302综采工作面为工程背景,进行底板破坏深度研究。采用现场压水试验方法,对该工作面底板破坏规律进行采前、采后全过程实测,利用FLAC^(3D)数值模拟软件,对底板破坏深度和型态进行了数值仿真。研究结果表明:现场实测该工作面采后底板最大破坏深度为17.8 m;数值模拟底板破坏最大破坏深度为20 m,二者结果基本相吻合。According to the bearing mining during mining seam No.3 in Sihe mine, taking fully mechanized coal mining face W3203 of Sihe mine as engineering background, the failure depth of coal seam floor is studied. The field measurement was finished by packer permeability test, failure depth of coal seam floor was measured before and after mining. Based on numerical simulation software FLAC^3D, the failure depth and shape of coal seam was studied. The results show that the failure depth of coal seam floor of is 17.8 m,simulation results show that the floor damage depth is about 20 m. The results of numerical simulation are consistent with measured results.

关 键 词：大采高 底板破坏深度 压水试验 

分 类 号：TD823.25[矿业工程—煤矿开采]