杨光辉,王开,张小强. 深井巷内预制充填体切顶无煤柱开采技术研究[J]. 采矿与岩层控制工程学报,2020,2( 1 ):013038.
YANG Guanghui,WANG Kai,ZHANG Xiaoqiang. Study on non-pillar mining technology of preset packing body and roof cutting in deep well roadway[J]. Journal of Mining and Strata Control Engineering,2020,2( 1 ):013038.
深井巷内预制充填体切顶无煤柱开采技术研究
杨光辉,王 开,张小强
( 太原理工大学 矿业工程学院,山西 太原 030024 )
摘 要:针对目前深井高地应力开采环境复杂、煤炭资源采出率低等问题,提出了巷内预制充填体切顶无煤柱开采技术,以山西某矿21214工作面运输巷为研究对象,通过理论分析以及数值模拟仿真方法确定切顶参数、预制充填体合理宽度,并结合工程实例进行了可行性研究,按照设计的施工工艺和参数在21214工作面进行了实施。现场观测结果表明,巷内预制充填体切顶无煤柱开采技术实践效果显著,巷道顶底板最大位移量为120 mm,实体煤帮位移量为145 mm,巷道围岩变形量能够得到很好地控制。
关键词:深井高地应力;切顶卸压;充填体;无煤柱开采
中图分类号:TD 353 文献标志码:A 文章编号:2096-7187( 2020 )01-3038-08
Study on non-pillar mining technology of preset packing body and roof cutting in deep well roadway
YANG Guanghui,WANG Kai,ZHANG Xiaoqiang
(College of Mining Engineering,Taiyuan University of Technology School of Mining Engineering,Taiyuan 030 024,China )
Abstract:In view of the present deep-well and high-stress mining environment problem of complex and low recovery rate of coal resources,a new technique with preset packing body and roof cutting for coal seam without coal pillar mining is put forward,with coal mine 212 14 headentry in SHAN Xi as the research object,through theoretical analysis and numerical simulation method to determine reasonable roof cutting parameters and preset packing body width. The feasibility study is carried out with a industrial test,according to the design of the construction technology and parameters in 212 14 coalface in the implementation of industrial test results show that the technique with preset packing body and roof cutting for coal seam without coal pillar mining practice effect is remarkable,roof and floor rock of roadway maximum displacement is 120 mm. The displacement of solid coal wall is 145 mm,and the deformation of roadway surrounding rock can be well controlled.
Key words:deep-well and high-stress;roof cutting and pressure relief;preset packing body;non-pillar mining
收稿日期:2019-07-08 修回日期:2019-09-15 责任编辑:许书阁
基金项目:国家自然科学基金青年科学基金资助项目( 51704204 )
作者简介:杨光辉( 1 994— ),男,内蒙古赤峰人,硕士研究生,主要从事矿山压力及支护等方面的研究。E-mail:839 472 475@qq. com
上一篇:李尧等:含瓦斯抽放钻孔沿空掘巷窄煤柱合理宽度研究
下一篇:李江华等:珲春河下近距离煤层开采及对河堤损害影响的研究