煤炭与化工2024，Vol.47Issue(6)：14-17,22,5.DOI:10.19286/j.cnki.cci.2024.06.003
厚顶煤巷道煤柱尺寸留设及"控顶限帮"支护技术研究
Research on the size of coal pillar in thick top coal roadway and the support technology of"roof controlling and side limiting"
魏宝贞 1李文林 1李宁 1顾锋 1王宁1
作者信息
- 1. 兖矿能源集团股份有限公司东滩煤矿,山东济宁 273500
- 折叠
摘要
Abstract
In order to study the size of coal pillar and support problems during the reduction of cutter bar face in the presence of geological structure,combining with the geological conditions of No.1310 Face in Dongtan Mine,Through theoretical analysis and numerical simulation,the size of coal pillar of knife handle type face after the reduction of face was determined,and put forward the principle of"roof controlling and side limiting"support to realize the synergistic control of deep and shallow surrounding rocks of thick top coal roadway and realize the synergistic control of deep and shallow surrounding rocks of thick top coal roadway.The principle of"roof controlling and side limiting"support was proposed to realize the synergistic control of the deep and shallow surrounding rocks in the roadway with thick top coal.The research results showed that leaving 40m protective coal pillar,together with the support program,could fully ensure the safety and stability of No.1310 trackway.Combined with the monitoring situation on site after face reduction,it was considered that the width of 40 m coal pillar after face reduction and the support program were reasonable and feasible.关键词
刀把型/弹性核/极限平衡理论/塑性区Key words
knife handle type/elastic core/limit equilibrium theory/plastic zone分类
矿业与冶金引用本文复制引用
魏宝贞,李文林,李宁,顾锋,王宁..厚顶煤巷道煤柱尺寸留设及"控顶限帮"支护技术研究[J].煤炭与化工,2024,47(6):14-17,22,5.
