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- Blasting top coal caving 爆破放顶
- Practices have proved that quick advancing techniqe is applicable in isolated unmined area Comprehensive top coal caving face. 实践证明,孤岛综放工作面快速推进技术是可行的。
- This article introduced applications,observation and research's actuality and developing trend of fully mechanized top coal caving mining under water. 介绍放顶煤开采技术在水体下采煤领域中的应用情况、观测研究现状及其发展趋势。
- Blasting test of top coal precracking in blasting coal Caving face 炮采放顶煤工作面顶煤预裂爆破试验
- The law of top coal movement on a fully mechanized longwall face with top coal caving wasanalysed thoroughly on the basis of field observation andfinite element calculation. 本文根据现场观测、数值计算以及理论分析,详细阐述了放顶煤采场的顶煤变形运动规律,指出了顶煤变形运动可划分成四个区:顶煤变形区,压裂区,松动区和放落区。
- In early application of fully mechanized top coal mining,Spontaneous fire took place when the backout of fully mechanized top coal caving face was stopped mining. 在应用综放开采的初期,每当综放工作面停采回撤时,就会发生自燃发火。
- Taken Xinhe Colliery 3101 workface as the concrete condition, phenomenon law of underground pressure in great-inclined thick coal seam mechanized top coal caving is studied. 本文以新河煤矿3101工作面为具体条件，研究了大倾角厚煤层综放开采矿压显现规律。
- Test and research on blasting with long bore hole in gateway top coal caving 长孔爆破在巷道放顶煤中的试验研究
- The key point of Grand pressure law on working face of seam top coal caving method,the method of dealing with them,firstly caving and end caving of working face roof control are discussed. 论述了中厚煤层综采放顶煤工作面矿压显现规律和顶板管理的特点,指出了综放工作面顶板管理的方法,以及工作面初采、收作时顶板管理的要点。
- Through emit fuzzy cluster analysis of the caving ability of 3#coal seam in Nanyang Coal Mine, it is obtained that 3# coal seam has good caving ability and is suitable for adopting top coal caving method. 通过对南阳煤矿3%23煤层冒放性模糊聚类分析,得出南阳煤矿3%23煤层冒放性较好,适合采用放顶煤开采。
- By using UDEC program to simulate the roof stability in face area under different top coal in fully-mechanized mining with top coal caving, simulated model is founded, simulated projects are designed and mechanical parameters are set. 运用UDEC数值模拟程序,以不同顶煤条件下的综放开采端面顶板稳定性模拟为例,建立了数值模型、设计了计算方案、设定了力学参数;
- According to the field investigation at Dayang coal mine, the paper describes behavior of ground pressure of longwall top coal caving face with soft surrounding rock and movement of overlying strata. 本文通过大雁二矿28%23层采面矿山压力的实测分析,论述了软岩矿井大采放比综放开采矿压显现特征和围岩活动规律。
- The paper is on the basis of big thickness, high ductility, bad cavibility of second coal seam in Lingwu mining district, and the fully mechanized top coal caving method is hard to broaden. 本论文选题针对灵武矿区二号煤层厚度大、高韧性、冒放性差,综采放顶煤开采工艺难以推广的技术难题展开研究。
- longwall fully mechanized top coal caving method 长壁综采放顶煤采煤法
- feasibility of long wall with top coal caving 综放可行性
- top coal caving in horizontal sectional seam 水平分段放顶煤
- top coal caving on fully-mechanized working face 综采放顶煤工艺
- horizontal section top coal caving 水平分段放顶煤
- mechanized top coal caving mining 综放开采
- mechanized top coal caving mining face 综放工作面
