| 巨厚松散层下防水煤柱合理留设及其数值模拟 |
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| 引用本文： | 王睿,孟召平,谢晓彤,贾立龙,汪元有.巨厚松散层下防水煤柱合理留设及其数值模拟[J].煤田地质与勘探,2011,39(1):31-35. |
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| 作者姓名： | 王睿 孟召平 谢晓彤 贾立龙 汪元有 |
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| 作者单位： | 1. 中国矿业大学地球科学与测绘工程学院, 北京 100083; |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目(2007CB209405); 国家自然科学基金项目(40772100); 中国矿业大学大学生科技创新计划项目(2010) |
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| 摘 要： | 防水煤柱合理留设是巨厚松散层下煤炭开采设计的基本参数。通过对东欢坨矿第四系巨厚松散层地质特征分析，揭示了本区第四系巨厚松散层中的含、隔水层厚度及其结构分布特征和对煤炭开采充水的影响，建立了巨厚松散含水层下防水安全煤柱计算模型和理论，提出了在巨厚松散层下的防水煤柱留设的非线性计算方法，计算东欢坨矿8煤层防水煤岩柱的高度为65.62 m。根据流-固耦合理论，应用FLAC3D数值模拟计算软件，模拟了东欢坨矿 8煤层开采过程中上覆岩层变形破坏规律，揭示了煤层顶板岩体冒落带、导水裂隙带和弯曲下沉带的分布规律，获得了防水煤柱高度及相关工程技术参数，验证了巨厚松散层下防水煤柱留设的非线性设计方法和计算模型的可靠性，为巨厚松散层下防水煤柱合理留设探索了可行途径。
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| 关 键 词： | 巨厚松散层 防水煤柱 冒落带高度 留设方法 数值模拟 |
| 收稿时间： | 2010-04-15 |
Waterproof coal pillar reasonable design and numerical simulation under extremely thick unconsolidated strata |
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| WANG Rui,MENG Zhaoping,XIE Xiaotong,JIA Lilong,WANG Yuanyou.Waterproof coal pillar reasonable design and numerical simulation under extremely thick unconsolidated strata[J].Coal Geology & Exploration,2011,39(1):31-35. |
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| Authors: | WANG Rui MENG Zhaoping XIE Xiaotong JIA Lilong WANG Yuanyou |
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| Institution: | 1. College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China;2. Key Laboratory of Geological Hazards on Three gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang 443002, China |
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| Abstract: | Waterproof coal pillar reasonable design is a fundamental parameter of coal extraction devising under extremely thick unconsolidated strata.By analysis of Quaternary extremely thick unconsolidated strata geological characteristics,the influence of thickness and structural distribution properties of a quifer and aquifuge under extremely thick unconsolidated strata on water inrush during coal extraction was revealed,the waterproof coal pillar design computing model and theory under extremely thick unconsolida... |
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| Keywords: | extremely thick unconsolidated strata waterproof coal pillar caving zone height design method numerical simulation |
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