摘要
留窄煤柱沿空巷道受冲击矿压及相邻工作面采动影响,普通锚网索联合支护难以控制窄煤柱变形及顶板稳定,针对巷道受力及围岩变形特点,提出"强化矿压监测预报、强化巷道围岩卸压、强化支护结构强度"的"三强化"巷道综合维护技术,将监测预报、围岩卸压和支护有机结合,有效维护了强矿压迎采动沿空巷道的稳定。
The gob - side entry with small coal pillars is significantly influenced by rock burst and mining of adjacent coal face. There- fore, it would be difficult for regular bolt - net - anchor combined support to control the deformation of small coal pillars and the stabili- ty of the roof. Based on the characteristics of roadway stress and surrounding rock deformation, an integrated maintenance technology ＂ three -reinforcement＂ including reinforcement of mine pressure monitoring and forecast, reinforcement of pressure relief of the sur- rounding rock in the roadway and reinforcement of the structural strength of support is proposed in this study. This technology effectively combines monitoring and forecast, surrounding rock pressure relief and support. In addition, the bolt - net - anchor support parameters were optimized and bolt - anchor bottom supplement support and Malisan grouting were utilized at special sections. Thus, the stability of the advancing mining gob - side entry with strong pressure could be maintained.
出处
《煤矿安全》
CAS
北大核心
2014年第11期81-83,共3页
Safety in Coal Mines
关键词
冲击矿压
迎采动
沿空巷道
卸压
联合支护
rock burst
advancing coal mining
bob- side entry
pressure relief
combined support
