| 基于Laubscher 崩落图的矿体可崩性研究 |
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| 引用本文： | 冯兴隆,王李管,毕林,贾明涛,曾庆田.基于Laubscher 崩落图的矿体可崩性研究[J].煤炭学报,2008,33(3):268-272. |
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| 作者姓名： | 冯兴隆 王李管 毕林 贾明涛 曾庆田 |
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| 作者单位： | 中南大学 资源与安全工程学院， 湖南 长沙，410083 |
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| 基金项目： | 国家自然科学基金重大项目(50490270) |
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| 摘 要： | 通过对金川Ⅲ矿区的工程地质调查、矿岩力学性质试验，获得了表征矿山岩体工程质量的多种指标.在分析了这些指标后，选取节理间距、RQD值、地下水、结构面状态、岩石单轴抗压强度指标建立了Ⅲ矿区的可崩性评价模型.由可崩性模型计算出各评价区域的MRMR值，然后根据Laubscher 崩落图计算每个评价区域的初始和持续崩落水力半径分别为7.0～11.1 m和18.1～24.1 m，通过对计算结果的分析表明,这些区域适合应用自然崩落法进行开采.
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| 关 键 词： | Laubscher 崩落图 自然崩落法 崩落水力半径 |
| 文章编号： | 0253-9993(2008)03-0268-05 |
| 修稿时间： | 2007年3月14日 |
Research on cavability of orebody based on Laubscher’s caving chart |
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| FENG Xing-long,WANG Li-guan,BI Lin,JIA Ming-tao,ZENG Qing-tian.Research on cavability of orebody based on Laubscher’s caving chart[J].Journal of China Coal Society,2008,33(3):268-272. |
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| Authors: | FENG Xing-long WANG Li-guan BI Lin JIA Ming-tao ZENG Qing-tian |
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| Abstract: | Several kinds of indexes represented the engineering quality of rock mass in mine were acquired by survey of engineering geology and measurement of crustal stress and field stress in Jinchuan No.3 mine area. After the analysis of these indexes, jointing space, RQD, groundwater, structural plane attitude and the index of uniaxial compressive strength of rock were selected to build the cavability assessment mold. Based on this mold, MRMRof each assessment areas were calculated. Then, the sustained and occurring caving hydraulic radius, its value is 7.0~11.1 m and 18.1~24.1 m, of each assessment area can be calculated by Laubscher’s caving chart. The analysis of calculating result turns out that these areas are suitable to be mined by block caving method. |
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| Keywords: | Laubscher's caving chart block caving method caving hydraulic radius |
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