重复采动下伏煤层渗流特性的相似模拟实验  

Similar Simulation Experiment of Seepage Characteristics in Underlying Coal Seam with Repeating Mining

作　　者：崔炎彬 刘黎[1] 李志梁[1] 林海飞[1] 肖鹏[1] 刘超[1] 

机构地区：[1]西安科技大学能源学院,西安710054

出　　处：《煤炭技术》2016年第8期78-80,共3页Coal Technology

基　　金：国家自然科学基金资助项目(51304154;51304156;51327007);陕西省科技新星专项(2014KJXX69)

摘　　要：利用自主研发的上保护层开采物理相似模拟实验台,进行了不同间距上保护层开采下被保护层渗流变化规律的实验研究。实验结果表明:保护层开采后,重复采动保护层层数越多,被保护层卸压效果越明显;渗透性变化在走向方向先后经历升高、到达峰值后降低、趋于稳定、再升高、到达峰值后再降低的过程,变化曲线呈现马鞍状。The physical analog simulation test bench of upper protective layer exploit researched independence was used to research the permeability characteristics of protected layer influenced by mining coal seam group repeatedly. This research was focused on the change rule of protected layer under mining protective layer at different spacing. The results show the depressurization efficiency of protected layer is more obvious with the number of mining. The curve of permesbility change has two rise range with a stable range ,and then reduce after a peak. This curve like a saddle.

关 键 词：相似模拟 重复保护 上保护层 渗流特性 

分 类 号：TD315[矿业工程—矿井建设] TD712