long wall method

Different from the delaying slope coal seam, there is difficultly supporting particular complexity in the T-junctions of the fully mechanized top coal caving longwall face in pitched thick seams because of existence of triangle top coal in tail T-junction and triangle floor in head T-junction.

与缓倾斜煤层综放工作面不同,大倾角长壁综放工作面因沿倾斜方向布置,会出现下端头底三角、上端头顶三角煤不易支护的特殊复杂性。

Through cutting of the scence,trying to find out the experience and carrying out the ways of roadway longwall longholl demolish,a safty road will be found for the steeply in clined seam in the days to come.

针对急倾斜煤层的特点,采用合理的巷道布置、生产工艺和安全措施,通过现场实际开采,摸索经验,实施巷道长壁长孔爆破采煤法,为今后急倾斜煤层开采寻找安全之路。

The paper introduced the size, equipment, gateway arrangement and production of the fully mechanized longwall coal mining faces at home and abroad.

介绍了国内外长壁综采工作面的尺寸、设备、回采巷道布置及工作面单产的现状及发展趋势。

The underground pressure behavior of long-wall full-mechanized caving mining field under hard roof in steeply inclined thick coal seam is observed and concluded with KGJ-B online monitoring system.

运用KG J-B型在线监测系统,观测总了急-倾斜厚煤层坚硬顶板长壁综放采场矿压显现规律,采取了针对煤帮及顶板的控制措施,确保了安全生产。

China rely mainly on underground mining ,and longwall mining is play ing important roles in coal mining in China.

综述我国长壁采煤法的基本情况 ,重点分析长壁采煤法技术进展、长壁开采设备发展趋势和长壁开采技术在厚煤层中的应用 ,同时介绍了我国高产高效矿井长壁开采技术和经验。