摘要
推行沿空留巷技术,可以取消区段隔离煤柱,提高资源回收率,延长矿井服务年限,缓解采掘接续紧张状况,还是薄煤层开采降低成本、提高产量、增加效益、改善环境的有效途径,具有较好的经济效益和社会效益。采用合理的巷旁支护和巷内支架联合支护能延缓和减少巷道在使用期间过分的变形和破坏,将巷道围岩变形量控制在允许的范围内。采用数值模拟的方法对沿空留巷在不同支护条件下的围岩应力及破坏状态进行研究,得到了适合沿空留巷变形特点的支护方案。
With introducing gob-side entry retaining technology, coal pillar section can be canceled, the reclaim ratio of resources is improved, the service life of the mine is prolonged and tensions of mining successor is eased, and it also can reduce costs, enhance production ,increase benefit, improve the environment, so it takes on good economic and social benefits. Reasonable support beside and inside the laneway can save and reduce the deformation and damage to the laneway during the service time, making wall rock＇s deformation within the permit scope. This paper makes the numerical simulation different statue, and it also find the support program on stress and deformation of gob-side entry retaining under which adapts to deformation characteristics of gob-side entry retaining.
出处
《煤炭科技》
2007年第3期5-6,共2页
Coal Science & Technology Magazine
关键词
沿空留巷
数值模拟
巷旁支护
联合支护
gob-side entry retaining
numerical simulation
roadside support
combined supporting
