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- Feeblezation technique with preliminary demolition in top coal caving work face 放顶煤工作面顶煤预爆破弱化技术
- Observation of "three-zone" in 1301 top coal caving work face in inflammable coal seam in Gengcun coal mine 耿村矿1301易自燃煤层综放开采"三带"观测
- 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。
- top coal caving on fully-mechanized working face 综采放顶煤工艺
- Measures to Raise Recovery Ratio of Resources in Working Face of Fully Mechanized Top Coal Caving 提高综放工作面回采率的措施
- The Analysis on Roof Control of Working Face of Medium-thickness Coal Seam Comprehensive Mechanized Top Coal Caving Method 中厚煤层综采放顶煤工作面顶板管理
- Selection and Application of Equipment for Comprehensively Mining Working Face in Longwall Top Coal Caving Face Under Wire Mesh Roof 网下低位放顶煤综采工作面设备选型及应用
- Comprehensive prevention and control of dust at the working faces of the fully mechanized top coal caving 综采放顶煤工作面粉尘的综合防治
- 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。
- Through the research of high gas and multi-water-bursting hazards prevention techniques in Jiaozuo coal mine regions, the mining coal method of caving working face is found. 通过对焦作矿区高瓦斯多水害防治技术研究,找出适合该条件下的炮采放顶煤模式的采煤方法。
- 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。
- Through the research of high gas and multi-water-bursting hazards prevention techniques in Jiaozuo coal mine regions,the mining coal method of caving working face is found. 通过对焦作矿区高瓦斯多水害防治技术研究,找出适合该条件下的炮采放顶煤模式的采煤方法。
- 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。
- 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 present invention belongs to the field of comprehensive mechanized coal caving technology, in particular it is an improvement on gas-discharging ventilation system of working face. 本发明属于综合机械化放顶煤(简称综放)开采技术领域,具体是一种综放工作面排瓦斯通风系统的改进。
- 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 ground pressure behavior anomaly in fully-mechanized top-coal caving working face is a trans-normally and detrimentally dynamic pressure phenomenon. 综放采场矿压显现异常是发生在综放采场的超出常规预计、对安全生产造成较大危害的动压现象。
- 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。
- Using modified distinct element method, simulation research is conducted on top coal movement at fully -mechanized working face in No2 Coalmine of Dayan Coal Bureau. 用改进的离散元法对大雁矿务局二矿综采放顶煤工作面顶煤活动规律进行模拟研究,分析支架围岩作用关系,找到顶煤丢失原因。
- 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。