一种矿山相似模拟设备的研发与应用  

Development and Application of a Similar Simulation Equipment in Mine

作　　者：高杰[1] 纪欣卓 徐爱民 GAO Jie;JI Xinzhuo;XU Aimin(School of Mines,State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China)

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

出　　处：《矿业研究与开发》2021年第6期149-153,共5页Mining Research and Development

基　　金：国家重点研发计划项目(2018YFC0604701);国家自然科学基金面上项目(51874281);中国矿业大学实验技术研究与开发项目(S2020D002)。

摘　　要：针对目前相似模拟试验装置存在的加载不均衡、内载荷精确度不高、载荷分布不均匀、水袋压力加载易出现漏水、水袋破裂、维护不便等问题,研发了一种气泵式加载相似模拟试验装置。为验证该装置的可靠性,以中煤塔山矿综放工作面为例,对老空区下综放面回采过程中覆岩位移规律进行研究,同时利用UDEC数值模拟对比相似模拟结果。结果显示,随开采距离增大,煤层直接顶垮落,并与上覆老空区导通,进一步开采后,上层基本顶发生破断,垮落带迅速发育至煤层以上60 m,此后覆岩三带发育高度逐渐增大并保持稳定,同时垮落带被压实,数值模拟与相似模拟试验结果保持一致,证实了该试验装置的模拟效果精准、可靠,具有一定的推广性。At present, there are some problems in the similar simulation experimental equipment, such as unbalanced loading, low load accuracy, uneven load distribution, water leakage, water bag rupture, inconvenient maintenance and so on. Aiming at the problems, a similar simulation equipment with air-pumping loading was developed. In order to verify the reliability of equipment, taking the fully-mechanized caving face of Zhongmei Tashan Mine as an example, the movement law of overlying rock in the mining process of the fully-mechanized caving face under the old goaf was studied, and UDEC numerical simulation was used to compare similar simulation results. The results show that as the mining distance increases, the coal seam direct roof collapses and connects to the overlying old goaf. After further mining, the upper basic roof breaks, and the collapse zone rapidly develops to a position of 60 m above the coal seam. After that, the development height of the overlying rock three belts gradually increases and remains stable, while the collapsed belts were compacted. The numerical simulation results are consistent with similar simulation results. It proves that the simulation effect of the equipment is stable and reliable, and the equipment can be widely used in the mining engineering.

关 键 词：相似模拟 气泵 设备开发 覆岩位移 

分 类 号：TD326.2[矿业工程—矿井建设]