摘要
针对色连一号煤矿8110工作面沿空掘巷存在的资源回收率低和巷道支护稳定性差的问题,采用岩石力学实验、理论计算与数值模拟相结合的方法进行优化设计,通过岩石力学实验获取煤岩体力学参数,并结合理论计算分析不同煤柱宽度对巷道稳定性和资源回收率的影响;利用数值模拟进一步优化煤柱宽度设计,研究不同宽度下的巷道变形、应力分布及煤柱承载能力,根据工作面开采矿压显现规律给出沿空掘巷设计方案。研究结果表明,采用5.5 m的小煤柱宽度能够有效平衡巷道支护稳定性与煤炭资源回收率,最短开掘时间为85.1~128.2 d。该研究为提高煤矿资源回收率与保障巷道稳定性提供了技术支持,并为类似矿区的小煤柱设计提供了科学依据。
In view of the existing problems of low resource recovery rate and poor stability of roadway support in the 8110 working face gob-side entry driving of Selian No.1 Coal Mine,a combination method of rock mechanics experiment,theoretical calculation,and numerical simulation is adopted to conduct optimization design.Coal rock mechanics parameters are obtained through rock mechanics experiments,and the influence of different coal pillar widths on roadway stability and resource recovery rate is analyzed combined with theoretical calculation;numerical simulation is used to further optimize the design of coal pillar width,study the roadway deformation,stress distribution,and coal pillar bearing capacity under different widths,and a design scheme of retaining roadway along goaf is provided according to the mine pressure behavior law of the working face mining.The research results show that adopting a small coal pillar width of 5.5 m can effectively balance the stability of roadway support and coal resource recovery rate,with a shortest excavation time of 85.1-128.2 days.This research provides technical support for improving coal mine resource recovery rate and ensuring roadway stability,and provides a scientific basis for small coal pillar design of similar mining areas.
作者
王海波
Wang Haibo(Inner Mongolia Tongmei Ordos Mining Industry Investment Co.,Ltd.,Ordos 017000,China)
出处
《山东煤炭科技》
2025年第8期57-61,共5页
Shandong Coal Science and Technology
关键词
沿空掘巷
煤柱宽度
开掘时间
优化设计
gob-side entry driving
coal pillar width
excavation time
optimization design
