李家壕煤矿地下水库人工坝体稳定性研究

发布时间：2018-03-23 20:12

本文选题：地下水库　切入点：人工坝体　出处：《煤炭学报》2017年07期

【摘要】：针对人工坝体稳定性问题,以李家壕煤矿地下水库为工程背景,基于Drucker-Prager准则对人工坝体所能承载的极限水头值以及易破坏位置进行了分析研究。结果表明:受地下水库储水水压的影响,坝体易在内表面中点以及外表面四边中点处出现DP峰值,且外表面的DP值大于内表面的DP值。外表面底边中点处DP峰值最大,接着是顶边中点处,左右两边中点次之,中心处峰值最小,并且左右两边中点处峰值呈近似对称分布。坝体的外表面底边中点处是最易发生失稳破坏的位置,并进一步计算得出人工坝体所能承载的极限水头值为17.8 m。并得到了Comsol数值模拟以及现场实测数据的验证。
[Abstract]:In view of the stability of artificial dam, the underground reservoir in Lijiagou Coal Mine is taken as the engineering background. Based on the Drucker-Prager criterion, the limit head value and the vulnerable position of the artificial dam are analyzed. The results show that the water pressure of the underground reservoir is affected by the limit head value and the vulnerable position of the artificial dam. The DP peak value of the outer surface is higher than that of the inner surface, and the DP peak value of the outer surface is higher than that of the inner surface, and the peak value of DP at the middle point of the outer surface is the largest, followed by the middle point of the top edge, followed by the middle point of the left and right sides. The peak value at the center is the smallest, and the peak value at the midpoint on the left and right sides is approximately symmetrical. Furthermore, the ultimate head value of the artificial dam can be calculated to be 17.8m. the numerical simulation of Comsol and the verification of the field measured data are given.
【作者单位】：中国矿业大学矿业工程学院;中国矿业大学煤炭资源与安全开采国家重点实验室;中国矿业大学物联网(感知矿山)研究中心;神华包头能源有限责任公司李家壕煤矿;
【基金】：国家重点研发计划资助项目(2016YFC0501100)
【分类号】：TD74

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