| 阶段自然崩落法的几个岩体力学问题 |
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| 引用本文： | 张世雄,童光煦.阶段自然崩落法的几个岩体力学问题[J].北京科技大学学报,1987(Z2). |
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| 作者姓名： | 张世雄 童光煦 |
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| 作者单位： | 北京钢铁学院采矿系
(张世雄)，北京钢铁学院采矿系(童光煦) |
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| 摘 要： | 本文论述了阶段自然崩落法的几个岩体力学问题。为了减小在岩体同一地点获得的RQD值的差异,建议采用一个新的指标NRQD,这是在垂直于主要一组不连续面的方向上进行的统计。如果只是在水平面上调查岩体的不连续面,统计数据可能会失真,建议进行空间调查。提出了一个新的假设——在崩落与放矿过程中,矿石和岩石不仅具有从体积上由大变小的趋势,而且具有从形状上由不均匀向均匀过渡的趋势。
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| 关 键 词： | 阶段自然崩落法 岩体力学 |
Some Geomechanics Problems in Block Caving |
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| Zhang Shixiong Tong Guangxu.Some Geomechanics Problems in Block Caving[J].Journal of University of Science and Technology Beijing,1987(Z2). |
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| Authors: | Zhang Shixiong Tong Guangxu |
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| Institution: | Zhang Shixiong Tong Guangxu |
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| Abstract: | This paper discusses some geomechanics problems in block caving.In order to reduce the fluctuation of the RQD obtained in the same situ on a rock mass, a new NRQD(Normal Rock Quality Designation) is recommened, which is obtained by statistics of discontinuities carried out at the vertical direction to the main group of discontinuities.The statistics data on the discontinuities of a rock massare will not be in consistent with practical facts if the investigation is only carried out at horizontal level.The space investigation is recommended.A new supp-ositeion is presented that not only the size of rock and ore reduces,but their shap get more and more homogeneous in the course of caving and drawing as well. |
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| Keywords: | block caving geomechanics |
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