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- Explosive technique of top coal caving in roadways of medium-thickness and high-thickness steep seam 急倾斜中厚-厚煤层巷道放顶煤开采爆破技术研究
- top coal caving in roadways 巷道放顶煤法
- top coal caving in horizontal sectional seam 水平分段放顶煤
- Rock movement law of horizontal section top coal caving in steep seam 急倾斜水平分段放顶煤开采岩移规律
- Analysis of longwall top coal caving in thick seams with parting band 含夹矸厚煤层综放开采技术分析
- TESTING STUDY OF SIMILAR MATERIAL FOR LAYER-DIVIDED TOP COAL CAVING IN SPECIALLY THICK COAL SEAM 特厚煤层分层放顶煤相似材料模拟试验研究
- The research on roof pressure and top coal caving in low-position caving coal face 低位放顶煤工作面顶板来压和顶煤垮落研究
- Testing study of cracked top coal caving for horizontal section top coal caving in steep seam 急斜水平分段放顶煤放煤实验研究
- Model and its application on the evaluation of degree of difficulty of top coal caving in steep seam 急倾斜煤层顶煤可放性评价模型及应用
- Step to incress output rate of fully mechanized top coal caving in extra toughness and thickness coal seam 提高高韧性特厚煤层综放开采采出率措施
- 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。
- 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。
- 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。
- They went to the cave in quest of hidden treasure. 他们到山洞去寻找宝藏。
- 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;
- The enemy had to cave in and surrender. 敌人只好屈服投降。
