|
|
|
| LAMINATION SPALLATION MODEL OF UNDERGROUND IMPACT PRESSURE |
| Pan Liyou，Wang Chongge，Li Xingwei |
| (Shandong University of Science and Technology，Tai’an 271019 China) |
|
|
|
|
Abstract One dimensional model for underground impact pressure of coal seam is proposed. The coal solid fragmentation can be divided into two phase：lamination spallation and fracture instability，and the distribution characteristics of abutment stress is used to describe fracture instability of coal. This model can be used to describe the mechanism of fracture instability of coal seam under the ground gravity field.
|
|
|
|
|
|
|
1 唐春安. 岩石破裂过程中的灾变[M]. 北京：煤炭工业出版社，1993，55～58
2 阎少宏，吴 健. 放顶煤开采顶煤运移实测与损伤特性分析[J]. 岩石力学与工程学报，1996，15(2)：155～162
3 华安增，孔园波等. 岩块降压破碎的能量分析[J]. 煤炭学报，1995，20(4)：389～392
|
| [1] |
JIA Chong1, 2, LAI Xingping1, 2*, CUI Feng1, 2, 3, 4, WU Xueming5, JI Songtao1, 2, HE Zhe1, 2, WANG Hao1, ZONG Cheng1, ZHANG Bo1, XUE Yifei1. Dynamic response of coal mining under the influence of hard roof breaking step and optimization of fracturing and scour prevention section length[J]. , 2026, 45(6): 1806-1826. |
|
|
|
|
2002, Vol. 21 
