某尾矿库渗流稳定性的数值模拟
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摘要
为某尾矿库的安全生产,防治由渗流引发的尾矿库灾害事故,利用FLAC3D计算软件对尾矿库进行渗流数值模拟计算,结果表明,在冲沟的位置有较大的速度矢量,对流沙的裹挟会使局部危害加剧;从图上可以知道水头、梯度和比降最大值的地方相应的动水压力最大,所以最容易发生渗流破坏,造成尾矿库事故;所取断面A-A的坝坡坡角β明显大于使坝坡稳定的安全角度。FLAC3D软件可以比较好地模拟计算尾矿库的渗流,对尾矿库的安全生产有一定的参考价值和指导意义。
To ensure the safe operation of tailing reservoir and to prevent and control its disaster accident due to seepage, FLAC3D is used to carry out the seepage numerical simulation calculation of the tailing reservoir. The result shows that there is a large speed vector at the gully, which can wrap the flowing sands and therefore, intensify the local damage. It is known from the figure that the dynamic pressure is the largest where the water head, gradient and hydraulic slope are the maximum, and the corresponding part is most likely to be destroyed by seepage, leading to an accident of the reservoir. The chosen section A-A's dam slope angle is evidently larger than the dam stability angle. FLAC3D software can be used to do a better simulation calculation of tailing reservoir's seepage, which can be of certain reference and guidance importance to the safe operation of tailing reservoir.
To ensure the safe operation of tailing reservoir and to prevent and control its disaster accident due to seepage, FLAC3D is used to carry out the seepage numerical simulation calculation of the tailing reservoir. The result shows that there is a large speed vector at the gully, which can wrap the flowing sands and therefore, intensify the local damage. It is known from the figure that the dynamic pressure is the largest where the water head, gradient and hydraulic slope are the maximum, and the corresponding part is most likely to be destroyed by seepage, leading to an accident of the reservoir. The chosen section A-A's dam slope angle is evidently larger than the dam stability angle. FLAC3D software can be used to do a better simulation calculation of tailing reservoir's seepage, which can be of certain reference and guidance importance to the safe operation of tailing reservoir.
引文
[1]腾志国.关于尾矿坝地震稳定性的分析及评价.[J].河北冶金,2003(1):16-17.
[2]刘波,韩彦辉.FLAC原理、实例与应用指南[M].北京:人民交通出版社,2005.
[3]苑莲菊,李振栓,等.工程渗流力学及应用[M].北京:中国建材工业出版社,2001.
[4]钱家欢,殷宗泽.土工原理与计算[M].北京:中国水利水电出版社,1996.
[5]王凤江,王来贵.尾矿库灾害及其工程整治[J].中国地质灾害与防治学报,2003,14(3),76-80.
[6]尹光志,余果,张东明.细粒尾矿库地下渗流场的数值模拟分析[J].重庆大学学报,2005(6):81-83.
[2]刘波,韩彦辉.FLAC原理、实例与应用指南[M].北京:人民交通出版社,2005.
[3]苑莲菊,李振栓,等.工程渗流力学及应用[M].北京:中国建材工业出版社,2001.
[4]钱家欢,殷宗泽.土工原理与计算[M].北京:中国水利水电出版社,1996.
[5]王凤江,王来贵.尾矿库灾害及其工程整治[J].中国地质灾害与防治学报,2003,14(3),76-80.
[6]尹光志,余果,张东明.细粒尾矿库地下渗流场的数值模拟分析[J].重庆大学学报,2005(6):81-83.
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