| 地下铁矿床灰岩顶板突水机理模拟研究 |
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| 引用本文： | 匡顺勇,王在泉,张黎明,白晓宇.地下铁矿床灰岩顶板突水机理模拟研究[J].青岛建筑工程学院学报,2011(1):30-34. |
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| 作者姓名： | 匡顺勇 王在泉 张黎明 白晓宇 |
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| 作者单位： | [1]青岛理工大学土木工程学院,青岛266033 [2]青岛理工大学理学院,青岛266033 [3]广东省重工建筑设计院有限公司,广州510034 [4]上海同是工程科技有限公司,上海200092 |
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| 基金项目： | 国家自然科学基金资助项目（50674059 51074095 41002109）; 山东省教育厅资助项目（J10LE01） |
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| 摘 要： | 根据水和岩石间力的传递过程的基本理论,利用SURPAC生成的真实地质模型,运用FLAC3D模拟了真实矿体开挖、填充对顶板稳定性的扰动.结果表明：矿房顶板的拉应力、沉降和塑性深度都随开挖步的进行逐渐增加,在开挖完5层后,拉应力的影响深度为10 m左右;矿房顶板的沉降为9.2 mm;矿房顶板的塑性深度为25 m;最大孔隙水压力随开挖步的进行逐渐减小.此时矿房顶板和注浆灰岩顶板在扰动下的塑性区都还没有贯通,注浆灰岩的隔水性能够得到保证.
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| 关 键 词： | 顶板突水 古家台铁矿 流固耦合 FLAC3D数值模拟 |
An Analysis of the Mechanism of Water Burst on Limestone Roof of Underground Iron Ore Mining |
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| KUANG Shun-yonga,WANG Zai-quanb,ZHANG Li-mingb,BAI Xiao-yu.An Analysis of the Mechanism of Water Burst on Limestone Roof of Underground Iron Ore Mining[J].Journal of Qingdao Institute of Architecture and Engineering,2011(1):30-34. |
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| Authors: | KUANG Shun-yonga WANG Zai-quanb ZHANG Li-mingb BAI Xiao-yu |
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| Affiliation: | 1.a.School of Civil Engineering;b.School of Science,Qingdao Technological University,Qingdao 266033,China;2.Guangdong Zhonggong Architectural Design Institute Co.,Ltd.,Guangzhou 510034,China;3.Shanghai Telsafe Engineering Technology Co.,Ltd.,Shanghai 200092,China) |
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| Abstract: | According to the basic theory about the transfer process of stress between water and rocks,the real geological model was generated by using SURPAC and simulating the influence on roof stability by real excavation and filling.The results showed： the tensile stress,settlement and plastic depth of roof increase gradually in excavation;after having excavated five layers,the tensile stress was about 10m deep,the settlement of roof 9.2 mm and plastic depth 25 m.The maximum pore water pressure dwindles away along with excavating steps.At this point,the plastic zone of the ore and limestone roofs has not run through in the disturbances and the watertight grouting of the limestone can be guaranteed. |
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| Keywords: | water burst of roof Gujiatai Iron Ore fluid-solid coupling numerical simulation of FLAC3D |
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