|
|
|
| Stability Classification of COal roads IN huainan mining area and engineering countermeasures |
| Yuan Liang |
| (Huainan Mining(Group) Co. Ltd.， Huainan 232001 China) |
|
|
|
|
Abstract The stability of the roof plates of coal roads in Huainan Mining Area is classified by two indexes，the intensity of tectonic stress and the complexity of occurrence structure of roof layers. The classification reflects that the composite roof plates are liable to develop layer separation in the mining area. The coal roads of Class IV，V are further divided into four types，stable，fragmentized，layer-separated，and layer-separated fragmentized coal roads. The idea of pretension supporting and the technique of serial pretension supporting are proposed for the control of layer separation，which effectively resolve the long-standing problem of coal road supporting.
|
|
|
|
|
|
1 Guo S，Stankus J. Control mechanism of a tensioned bolt system in the laminated roof with a large horizontal stress[A]. In：16th Int. Conf. on Ground Control in Mining[C]. Morgantown，West Virginia：[s. n.]，1997
2 张 农，高明仕，许兴亮. 煤巷预拉力支护体系及其工程应用[J]. 矿山压力与顶板管理，2002，19(4)：1～4，7
3 张 农，侯朝炯，杨米加等. 巷道围岩强度弱化规律及其应用[J]. 中国矿业大学学报，1999，28(2)：133～135
4 郭 颂. 水平应力—— 对采准巷道围岩稳定性的新认识[J]. 煤矿开采，1998，(4)：14～17
5 郑雨天，朱浮声. 预应力锚杆体系——锚杆支护技术发展的新阶 段[J]. 矿山压力与顶板管理，1995，(1)：2～7
|
| [1] |
LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
|
|
|
|
2004, Vol. 23 
