The formation is unstable and the wall caving are severe.
地层不稳定，井壁垮塌严重。
The following research results are obtained: the top coal caving technique and increasing the resistance of the support can reduce the pressure on the coal wall.
研究表明：放顶煤开采、提高支架工作阻力可以减缓煤壁压力，煤体合理注水可以提高煤体黏聚力与抗剪强度，它们是防治极软煤层煤壁片帮的有效措施。
During the drivage of main-gate in long-wall face with fully mechanized caving mining, the gate is hard to support due to its loose and broken roof, large cross-section and long span.
在综采放顶煤工作面顺槽掘进过程中，由于顺槽煤层顶板松动破碎，并且顺槽采用矩形断面，顶板跨距较大，不利于巷道支护。
It was succeeded in practical application. It is an useful exploration for the roadway stability control of fully-mechanized top-coal caving long-wall face in soft and thick coal seam.
并成功进行了实践应用，为进一步完善松软厚煤层长壁综放工作面顺槽稳定性控制理论技术体系进行了有益探索。
With the optimized design, the short-wall top-coal caving face of the mines in Xinjiang Mining Group Co. , Ltd. , increase more or gain good profits.
经过优化的三机配套方案后，新矿集团的各生产矿井的短壁综放工作面均实现了高产，取得了较好的经济效益。
With the optimized design, the short-wall top-coal caving face of the mines in Xinjiang Mining Group Co. , Ltd. , increase more or gain good profits.
经过优化的三机配套方案后，新矿集团的各生产矿井的短壁综放工作面均实现了高产，取得了较好的经济效益。
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