| 承压水体上岩浆岩底板采动效应的数值分析 |
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| 引用本文： | 徐德金.承压水体上岩浆岩底板采动效应的数值分析[J].采矿与安全工程学报,2011,28(1):144-147. |
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| 作者姓名： | 徐德金 |
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| 作者单位： | 中国矿业大学资源与地球科学学院,江苏,徐州,221116 |
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| 基金项目： | 国家重点基础研究发展计划(973)项目，国家自然科学基金项目 |
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| 摘 要： | 为防治卧龙煤矿首采区的底板突水,根据首采区煤层底板地质特征,分析了底板岩浆岩岩性及其组合特征,考查了太原组灰岩水的富水性和水压情况,并采用了应变软化本构关系,建立地质力学模型.运用快速拉格朗日元法对承压水体上底板的采动效应进行了数值模拟,分析了应力、位移场,确定10煤回采底板破坏深度为13 m.结果表明底板导水裂隙带深...
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| 关 键 词： | 岩浆岩 采动效应 煤层底板 承压水 数值分析 |
Numerical Analysis for Mining Effect on Coal Seam Floor with Magmatic Rock over Confined Water |
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| XU De-jin.Numerical Analysis for Mining Effect on Coal Seam Floor with Magmatic Rock over Confined Water[J].Journal of Mining and Safety Engineering,2011,28(1):144-147. |
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| Authors: | XU De-jin |
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| Affiliation: | XU De-jin(School of Resources and Geosciences,China University of Mining & Technology,Xuzhou,Jiangsu 221116,China) |
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| Abstract: | To prevent water burst from floor in the first mining district of Wolong coalmine,the geological and mechanical model of the study area is built on the basis of analyzing geological characteristics of coal seam floor,lithology with magmatic rocks and their combined characteristics,and adopting the constitutive relation of strain softening.In addition,the watery and the hydraulic pressure for limestone aquifer of Taiyuan formation are investigated.The mining effect of coal seam floor over the confined water ... |
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| Keywords: | magmatic rock mining effect coal seam floor confined water numerical analysis |
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