松软煤层高强度开采工作面矿压显现规律

Strata Behaviors Rule of High-strength Soft Coal Seam Working Face

文章以赵庄矿高强度松软工作面开采为工程背景,采用理论分析、数值模拟、现场实测的方法,对工作面顶板破断特征进行了分析,研究得出高强度回采下顶板稳定性取决于关键块B,现场实测得到工作面初次来压、周期来压步距为25.0m和11.0m,呈现沿倾向分段局部显现前移的特征。研究结果为赵庄矿3#煤工作面安全高效开采提供了指导,同时为松软条件下煤层开采提供了借鉴。

The article takes the Zhaozhuang Mine high-strength soft-faced mining face as engineering background,and uses methods of theoretical analysis,numerical simulation,and field measurement to analyze the characteristics of roof breaking in the working face,and studies that the stability of the roof depends on the key B blocks under high-intensity mining.Field measurements showed that the working face was pressed for the first time and the pressure step distance was 25.0 m and 11.0 m.The research results provide guidance for the safe and high-efficiency mining of No.3 coal face in Zhaozhuang Mine,and provide references for coal seam mining under soft conditions.