近距离特厚煤层小煤柱沿空掘巷支护技术研究

Study on Support Technology of Small Coal Pillar Gob-side Roadway in Close Distance Extra Thick Coal Seam

针对近距离特厚煤层小煤柱沿空掘进巷道围岩控制难题,采用数值模拟分析了近距离特厚煤层上、下煤层采动应力场演化规律,得出:近距离煤层巷道布置需要考虑同层位煤层开采和上部遗留煤柱双重支承压力的共同影响。

Aiming at the problem of surrounding rock control in small coal pillar gob-side roadway in close distance extra thick coal seam, the evolution law of the stress field in the upper coal seam and the lower coal seam in the close distance coal seam is analyzed by using numerical simulation. And the results are as follows： the roaduay layout of close distance coal seam needs to consider the co - effect of double support pressure of coal seam mining in the same layer and upper remaining coal pillars.