摘要
根据矿压显现规律和煤层开采时直接顶冒落高度,选择合理的留巷支护方案,对留巷方案支护参数进行科学计算,起到主动控制顶板、增强顶板自身承载能力,有效降低巷道顶板下沉量和两帮移近量,减轻巷道因采动影响应力再次分配而产生变形量,最终使原有巷道完整保留下来。它具有操作环境安全、工艺简单、成本低、效果好、与生产循环相适应等优点,克服了传统留巷中工序繁琐、施工困难、被动支等不足。
According to the laws of the mine pressure appear and immediate roof caving height when coal seam mining,Reasonable supporting scheme for choice, The scheme supporting parameters for scientific computing, Active control ofroof, strengthen the self - bearing capability of roof, Roadway roof subsidence and effectively reduce the two sides closer,reduce roadway deformation due to mining influence stress distribution again, finally make the original roadway completepreserved. It has the operating environment safety, simple process, low cost, good effect, adapted to the production cy-cle, etc, to overcome the traditional leave even process trival, construction difficulty, passive, etc.
出处
《山东煤炭科技》
2014年第7期15-17,共3页
Shandong Coal Science and Technology
关键词
锚索梁
主动支护设计
减小变形量
沿空留巷
anchor beam active support design reduce the deformation gob -side entry retaining
