The horizontal section top coal caving in steep seam is different from the gently inclined seam.
急斜煤层水平分段放顶煤开采与缓斜煤层不同,工作面沿煤层厚度的水平线布置,长度短。
There have been some problems such as low coal recovery and difficult management after coal mining in steep seam mining method.
急倾斜煤层的回采一直存在着回采率低、采后难以管理等实际问题。
On the basis of summarizing testing effects, the extension of crack and the breaking mechanism of top coal caving in steep seam have been analyzed by applying fracture mechanics theory.
在总结现场试验效果的基础上,应用断裂力学理论分析了急倾斜煤层巷道放顶煤顶煤破断裂纹的扩展和破碎机理。
Combined with the production situation of Muchengjian coal Mine, this paper introduced the method of water injection in steep seam coal, and the effect obtained after applied this method.
结合木城涧煤矿的生产情况,介绍了急倾斜煤层的注水方法及在煤矿应用后所取得的效果。
The practice on sublevel combined mining in steep seam is approached and the advantage of it is analyzed. It is an efficient way to realize the high efficiency production in steep seam in coal mine.
介绍了急倾斜煤层小阶段联合开采的实践与探索,分析了小阶段联合开采的优越性,认为该方法是实现急倾斜矿井高产高效的有效途径。
The rectilinear home is topped with a steep roof that consists of standing-seam metal panels, which reflect light.
线型的房子顶部是陡峭的屋顶,屋顶由反射光的直立缝金属面板组成。
Base on the site observation and experimental research, the paper studied the top coal structure for the top coal caving mining in steep inclined seam sections.
在现场观测及实验研究基础上,对急倾斜水平分段放顶煤开采过程中顶煤体结构进行了研究。
First, based on similar material model test, top coal cave-in characters in steep and thick seam were studied as well as failure law of main roof and features of surface subsiding.
首先利用相似模拟实验研究了急斜特厚煤层顶煤的冒落特征、顶板的破坏规律,以及地表下沉的特点。
The steep inclined seam is a difficult mining seam with a poor safety condition, a poor support stability, a lower mechanization and lower mining rate.
急倾斜煤层属难采煤层,具有安全状况差、支架稳定性差、机械化程度低、回采效率低等问题。
The stable-compression-resilience-stable deformation features of the support structure was verified during the steep inclined seam mining process.
验证了急倾斜煤层开采过程中支护结构稳定-压缩-回弹-稳定的变形特性。
The feasibility of the protective coal pillar mining in the artificial inclined steep drift in the thick (ultra thick) coal seam of a large slope is discussed.
论证了急倾斜厚(特厚)煤层伪斜上山保护煤柱回收的可行性。
Research on Destruction Mechanism and Supporting in Roadway of the Steep Coal Seam of Taiping Coal Mine;
一侧采空巷道稳定性不仅与支承压力分布有关,而且与煤体受破坏程度有关。
Research on Destruction Mechanism and Supporting in Roadway of the Steep Coal Seam of Taiping Coal Mine;
一侧采空巷道稳定性不仅与支承压力分布有关,而且与煤体受破坏程度有关。
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