辛置煤矿2-208 工作面掘进巷道矿压观测研究
冯媛斌
（霍州煤电集团有限责任公司辛置煤矿， 山西 霍州 031400）
摘要： 以辛置煤矿2-208 工作面掘进巷道为工程背景， 在围岩及煤样力学性质、矿物组成、构造特征分析及矿压观
测的基础上， 着重分析了锚杆受力、顶板离层等相关数据， 旨在研究特定坚硬顶板条件下掘进巷道的矿压显现规律。根
据实验室试验、现场观测并结合理论分析， 明确了2-208 工作面掘进巷道坚硬难冒顶板的特性， 并在此基础上对该巷道
进行了矿压观测。观测结果表明， 锚杆受力与推进度成正比， 锚杆受力增量最大为8(kN， 远小于锚杆额定锚固力， 顶板
离层变化值最大为37mm， 顶板较稳定。
关键词： 掘进巷道； 坚硬顶板； 矿压观测； 矿压显现
中图分类号： TD326     文献标识码： A     文章编号： 2095-0802-(2021)01-0014-02
Research on Mine Pressure Observation of Driving Roadway in 2-208 Working Face of Xinzhi
Coal Mine
FENG Yuanbin
(Xinzhi Coal Mine, Huozhou Coal Electricity Group Co., Ltd., Huozhou 031400, Shanxi, China)
Abstract: Taking the driving roadway of 2-208 working face in Xinzhi Coal Mine as the engineering background, based on the
analysis of mechanical properties, mineral composition, structural characteristics and mine pressure observation of surrounding rock
and coal samples, this paper emphatically analyzed the relevant data of bolt stress and roof separation, aiming to study the mine
pressure behavior law of driving roadway under specific hard roof conditions. According to the laboratory test, field observation
and theoretical analysis, the characteristics of hard and hard roof falling in driving roadway of 2-208 working face were clarified,
and on this basis, the mine pressure observation of the roadway was carried out. The observation results showed that the bolt force
was directly proportional to the advance degree. The maximum stress increment of the bolt was 8 kN, which was far less than the
rated anchoring force of the bolt. The maximum variation of roof separation was 3 mm, and the roof was relatively stable.
Key words: driving roadway; hard roof; mine pressure observation; mine pressure behavior