| 大型采空区下持续开采空区稳定性研究 |
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| 引用本文： | 张成良,杨绪祥,李风,侯克鹏,吴应武.大型采空区下持续开采空区稳定性研究[J].武汉理工大学学报,2010(8). |
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| 作者姓名： | 张成良 杨绪祥 李风 侯克鹏 吴应武 |
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| 作者单位： | 昆明理工大学国土资源工程学院; |
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| 基金项目： | 云南省科技厅节能减排科技创新工程(2008KA001) |
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| 摘 要： | 31-1#矿体采空区暴露面积为6000 m2,空区高度为60 m。随着空区下部矿体开采的持续进行,空区暴露高度将达100 m左右;在巨大的采空区下进行采矿作业,一旦发生空区围岩失稳,将对作业中的人员和设备带来巨大灾难。采用有限元对空区下部矿体开采过程中空区顶板围岩的应力、安全率、垂直最大位移、塑性区分布进行了模拟分析,根据模拟结果可知:随着矿房、矿柱、下部矿体开采完成后,顶板的位移和应力有所增加,安全率有所下降,塑性区进一步扩大,地压活动有进一步恶化的趋势,但空区围岩总体上趋于稳定。在空区顶板和两腰安装监测仪器对空区围岩的稳定性进行监测,监测结果和数值模拟结果具有良好的一致性。
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| 关 键 词： | 采空区 顶板 数值分析 稳定性 |
Stability Study on Mined-out Area with Continuous Mining Under the Large Scale Mined-out Area |
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| ZHANG Cheng-liang,YANG XU-xiang,LI Feng,HOU Ke-peng,WU Ying-wu.Stability Study on Mined-out Area with Continuous Mining Under the Large Scale Mined-out Area[J].Journal of Wuhan University of Technology,2010(8). |
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| Authors: | ZHANG Cheng-liang YANG XU-xiang LI Feng HOU Ke-peng WU Ying-wu |
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| Affiliation: | ZHANG Cheng-liang,YANG XU-xiang,LI Feng,HOU Ke-peng,WU Ying-wu(Faculty of L, Resource Engineering,Kunming University of Science , Technology,Kunming 650093,China) |
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| Abstract: | The exposed area is 6 000 m2 and exposed height is 60 m of 31-1# mined-out area of ore body,and the exposed height would reach to 100 m with the proceed of under mine.In the process of mining activity under the large scale mined-out area,once the roof of mined-out area collapsed,a great of disaster of the shock wave caused by collapsing of enclosing rock of roof to equipment and processing personnel under mined-out area was induced.The enclosing rock stress,vertical displacement,plastic zone and safety rate... |
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| Keywords: | mined-out area roof numerical analysis stability |
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