水力冲孔物理模拟试验系统研制及其应用  

Development of hydraulic punching test system and its application

作　　者：冯丹[1,2] 许江[1,2] 陶云奇 彭守建[1,2] 武雪锋[1,2] 张先萌[1,2] FENG Dan XU Jiang TAO Yunqi PENG Shoujian WU Xuefeng ZHANG Xianmeng(State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China State and Local Joint Engineering Laboratory of Methane Drainage in Complex Coal Gas Seam, Chongqing University, Chongqing 400044, China Henan Energy and Chemical Industry Research Institute Group Co Ltd, Zhengzhou, Henan 450046, China)

机构地区：[1]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044 [2]重庆大学复杂煤气层瓦斯抽采国家地方联合工程实验室,重庆400044 [3]河南能源化工集团研究院有限公司,河南郑州450046

出　　处：《采矿与安全工程学报》2017年第4期782-788,共7页Journal of Mining & Safety Engineering

基　　金：国家科技重大专项项目(2016ZX05044-02);河南省创新型科技人才队伍建设工程项目(164100510024);国家自然科学基金重点项目(51434003)

摘　　要：为研究松软煤层水力冲孔卸压增透特性,自主研制了水力冲孔物理模拟试验装置,其主要结构包括喷嘴、水力冲孔钻杆、水力冲孔旋转系统、水力冲孔推进系统、底座及固定系统等。该装置可基于自主研制的多场耦合煤层瓦斯抽采物理模拟试验系统,开展不同地应力状态及不同水力冲孔条件下的水力冲孔物理模拟试验。利用该系统进行了水力冲孔物理模拟试验,分析结果发现,冲孔过程中由于水力冲孔卸压作用,导致影响区域范围内煤体产生压缩变形,同时钻孔成像结果反映了水力冲孔孔洞形态及水力冲孔卸压造成的裂隙位置及形态,为后期分析水力冲孔卸压机理及水力冲孔后瓦斯运移规律提供了一定的支撑。High-pressure rotating hydraulic punching physical simulation test device was developed to study the characteristics of pressure release and transparency of hydraulic punching in soft coal seam.Its main structures are the nozzle,hydraulic punching drill pipe,hydraulic punching rotating system,hydraulic punching propulsion system,the base,and securing system,etc.Based on the self-developed physical simulation experiment system for coupling coal seam gas extraction,the device can be used in hydraulic punching physical simulation experiments under different in-situ stress state and different hydraulic punching sizes.A hydraulic punching simulation test was carried out with this system and it was found that during the process of punching due to hydraulic punching pressure relief,the coal in the impact area scope compressed.At the same time,the borehole imaging results clearly reflect the hydraulic punching hole and the position and shape of the fracture,which can provide support for hydraulic hole pressure relieving mechanism and methane moving mechanism in later analysis.

关 键 词：煤储层 水力冲孔 试验系统 物理模拟 卸压 

分 类 号：TD712[矿业工程—矿井通风与安全]