煤矿安全2019，Vol.50Issue(1)：149-152,156,5.DOI:10.13347/j.cnki.mkaq.2019.01.037
大跨度切眼巷道锚网复合支护技术研究与应用
Research and Application of Anchor Net Composite Supporting Technology for Large Span Open－off Cut Roadway
摘要
Abstract
The support of large span roadway surrounding rock is a major problem in roadway support. To solve the difficult controlling problem for the surrounding rock of large span roadway, 42202 open-off cut in Buertai Coal Mine is taken as the research object in this paper. The supporting parameters of 42202 open-off cut were studied by theoretical calculation, numerical simulation and field observation. Then, the best support parameters were selected. The best supporting parameters are that the spacing between the roof bolts is 1 000 mm × 1 000 mm, the spacing between the anchor cables is 1 800 mm × 2 000 mm, the spacing between the auxiliary anchor bolts is 850 mm × 1 000 mm, and the spacing between the forward anchor bolts is 850 mm × 1 000 mm. After the support, the maximum deformation of two sides and the maximum subsidence of roof are 37 mm and 28 mm, respectively. The results show that: the design support scheme can meet the requirements of surrounding rock control for large span open-off cut roadway.关键词
大跨度切眼巷道/锚网索/复合支护/支护参数/巷道支护Key words
large span open-off cut roadway/bole-net-cable/composite support/support parameter/roadway support分类
矿业与冶金引用本文复制引用
单永泉..大跨度切眼巷道锚网复合支护技术研究与应用[J].煤矿安全,2019,50(1):149-152,156,5.基金项目
国家重点研发计划资助项目(2017YFC0804105) （2017YFC0804105）
中国煤炭科工集团有限公司科技创新创业资金专项资助项目(2018MS006) （2018MS006）
中煤科工集团西安研究院有限公司科技创新基金资助项目(2017XAYZD12) （2017XAYZD12）
