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- ENGINEERING APPLICATION OF UNITED CAVING METHOD OF CAVING TOP COAL WITH LIGHT HYDRAULIC SUPPORT FOR SUBLEVEL CAVING BETWEEN STEEPLY INCLINED NEAR COAL SEAMS 急斜近距煤层水平分段轻型液压支架放顶煤联合开采的实践
- It is key problem to raise the top coal recovery rate of the fully mechanized sublevel caving mining. 提高顶煤放出率是综放开采的一个重大课题,预注水弱化顶煤是解决这一问题的有效方法之一。
- The top coal's recovery ratio in fully-mechanized sublevel caving face controls the stowing degree of the goaf, thereby influences the stability of hard and massive overlying roof. 摘要综放采场顶煤放出率控制着采空区的充填状况，从而影响着大厚度坚硬顶板的稳定性。
- blasting coal face with sublevel caving 炮采放顶煤工作面
- Using hydraulic supports in heavy grade longwall face with sublevel caving,anti-topple and antiskid are the key factors. 在大倾角倾斜煤层进行综放开采,支架的防倒、防滑成为决定放顶煤开采成功与否的关键。
- fully mechanized coal face with sublevel caving 综放工作面
- STUDY ON RELATIONSHIP BETWEEN ROOF STABILITY AND TOP COAL's RECOVERY RATIO DURING CYCLIC WEIGHTING IN FULLY-MECHANIZED SUBLEVEL CAVING FACE 综放采场周期来压阶段顶板结构稳定性与顶煤放出率的关系
- Study on relationship between roof stability and recovery ratio of top coal at first weight period in fully-mechanized sublevel caving face 综放采场初压阶段顶板稳定性与顶煤放出率关系探讨
- Improving Top Coal Recovery Ratio in Full-mechanized Sublevel Caving Faces by Long-hole Controlling Presplitting Blasting Technology 利用深孔控制预裂爆破技术提高综放工作面顶煤回收率
- fully-mechanized mining with sublevel caving 综采放顶煤
- fully mechanized mining with sublevel caving 综放工作面
- The Technology of Roof Bolting with Bar and Wire Mesh in Open-off Cut in Coal Face with Sublevel Caving 综放工作面开切巷锚梁网支护技术研究
- Field Survey Study on Surface Subsidence and Deformation Law of Longer Fully-Mechanized Coal Face with Sublevel Caving 超长综放面开采地表移动变形规律的实测研究
- The Status and Its'Developing Trend of Mining Thick Coal Seam with Sublevel Caving Method in China 我国厚煤层放顶煤开采技术的现状及发展方向
- Prestress distribution characteristics in fully mechanized mining of top coal with caving method and its influence upon the permeability 综放开采顶煤应力分布特征及其对渗透性的影响
- As a result,the new scheme of sublevel caving with footwall drifts,is raised. 为此，提出自放顶、设回收进路的无底柱分段崩落法新方案，实施后成效显著。
- Technology study of coal face equipment forming a complete set of transformed type supports with sublevel caving 改造型放顶煤支架工作面设备配套技术研究
- It would be preposterous to shovel coal with a teaspoon. 用茶匙铲煤是荒谬的。
- Construction Technology on Rear Exit in Blast-winning with Sublevel Caving Face 炮采工作面留后出口的施工技术
- To stir(a fire) by prodding the wood or coal with a poker or stick. 拔火用拨火棒或棍子捅木头或煤块以使（火）烧得更旺
