coal-seam stability

常见例句

The stability of goaf-side roadways depends on not only the abutment distribution, but also the fracturing degree of the coal seam and rock strata alone the pillar width.
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。
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。
In order to control the surrounding rock mass stability of fully mechanized large cutting height face in extremely-soft coal-gas burst thick seam effectively, stepped mining technology was presented.
基于对极软突出厚煤层大采高综采工作面端面煤岩稳定性的有效控制，提出了台阶式采煤工艺，采用台阶式割煤方式；用数值模拟分析了台阶式割煤的防片帮机理。