|
|
|
BROKEN FEATURE OF KEY STRATA AND ITS INFLUENCE ON ROCK PRESSURE IN SUPER-LENGTH FULLY-MECHANIZED COAL FACE
|
|
|
|
|
Abstract It is found by model experiment and field measurement that with the length of fully-mechanized coal face，the size of the broken blocks of key strata in the coal face will decrease correspondingly，and thus the rock pressure in the face is much welldistributed. This is good for the top coal broken and caving conveniently. However，the overlying rock pressure of the main key strata will happen accordingly. Furthermore，the relevant measurements must be taken efficiently to control the key strata for coal mining safely.
|
|
Received: 09 February 2001
|
|
|
|
| [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. |
|
|
|
|
