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【期刊论文】The Uncertainty of The Mining Engineering And Its Application
王家臣, Wang Jiachen
,-0001,():
-1年11月30日
There are a lot of uncertainties in the mining engineering, and they make a notable impact on the engineering. The uncertainties of the physical and mechanical properties of geotechnical mass, the surrounding rock stability, the nature condition, the equipment operation, the personnel and the external environment are proposed and described in this paper. The stochastic analysis should be widely used for considering the impacts of the uncertainty on the mining engineering. The economical risk analysis and the stochastic index system should also be set up in the mining engineering.
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王家臣, 陈忠辉, 熊道慧, 孙忠铭, 张民正
,-0001,():
-1年11月30日
运用三维FLAC数值软件研究了金川镍矿二矿区采用自然崩落法时的合理拉底方案、初次崩落的拉底面积、崩落速度等。基于现场调查,运用蒙特卡罗随机模拟方法生成了三维节理网络,并运用拓扑学中的单纯同调理论对矿石自然崩落块度进行了预测分析。
自然崩落法, 三雏数值计算, 拉底方案, 崩落块度, 拓扑学
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王家臣, 富强
,-0001,():
-1年11月30日
由于放煤口布置方向的差异,放矿椭球体理论的适用条件与低位放煤综放开采的放煤过程有本质差异,因此基于模拟试验、FLAC 计算、离散元模拟计算和现场观测,本文提出了散体介质流理论模型,揭示了低位综放开采中顶煤流动与放出的真实过程,并且成功地指导了现场放煤工艺与参数的确定。
放顶煤, 放煤规律, 散体介质流, 离散元
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王家臣, WANG Jiachen, YIN Zhengzhu, Bai Xijun
,-0001,():
-1年11月30日
Since the middle of 1980's, the Iongwall top-coal caving technique has developed rapidly in China. At present, it is one of the main approaches in the thick coal seam mining. This paper describes some mechanics problems of the caving technique, such as the damage and failure of the top-coal, the strata behaviors in the caving face, and the relation of the support and the surrounding rock. In order to employ the caving technique in a widespread scope, the problems such as the caving technique in the hard coal seam, the moving and running of the loose top-coal, and the upper floating of the gas etc. should be systematically studied.
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王家臣, 李志刚, 陈亚军, 郑厚发
,-0001,():
-1年11月30日
通过模拟试验,系统地研究了综放开采顶煤移动与放出规律、煤岩分界线形状,不同采放比、不同放煤步距、不同煤岩粒径比条件下的顶煤回收率与含矸率等,在理论上提出了顶煤回收率的预测方法。放煤的煤岩分界线为二次曲线,运用放煤前后分界线所围成的煤量减去放煤工艺损失量可预测放出煤量,采放比为1:2 二刀一放时,放煤效果好。
放顶煤, 放煤规律, 散体介质流, 模拟试验, 回收率
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