超前支承压力对煤层注水速率影响试验研究  

Experimental Research on Advance Abutment Pressure Affected to Coal Seam Water Injection Rate

作　　者：董跃文[1,2] 胡国忠[1,2] 许家林[1,2] 秦伟[1,2] 汪锋[1,2] 

机构地区：[1]煤炭资源与安全开采国家重点实验室,江苏徐州221116 [2]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《煤炭科学技术》2013年第11期47-49,共3页Coal Science and Technology

基　　金："十二五"国家科技支撑计划资助项目(2012BAK04B06);国家自然科学基金重点资助项目(51104155)

摘　　要：为了分析煤层注水速率与工作面前方超前支承压力分布规律之间的关系，采用现场观测的方法对开元煤矿9801工作面前方超前支承压力与煤层注水速率进行了实测。结果表明：煤层注水速率受工作面前方超前支承压力分布规律的影响较为明显，在工作面超前极限平衡区0～20m段，注水速率增长明显，最高达到2．88m3／h，为应力上升区20～35m段的4．5～9．6倍，充分利用工作面超前支承压力影响区进行注水是保证煤层注水效果的重要途径。In order to analyse the relationship between coal seam water injection rate and advance abutment pressure, the site observation was applied to analysis the relationship between coal seam water injection rate and advance abutment pressure in No.9801 working face of Kaiyuan Mine and obtained reasonable water injection process and parameters.The results showed that advance abutment pressure influenced on coal seam water injection rate was obviously.Limit equilibrium interval within 20 m ahead of working face, the growth of coal seam water injection rate was distinct, reached the highest rate 2.88 m3/h,4.5- 9.6 times the rate of pressure rise area about 20-35 m ahead of the working face.The region of the advance abutment pressure was the important way to ensure the effect of coal seam water injection.

关 键 词：煤层注水速率 超前支承压力 湿润半径 注水距离 

分 类 号：TD325[矿业工程—矿井建设]