干湿循环对含蚀变带边坡稳定性影响研究
发布时间：2018-10-21 16:04
【摘要】：进行了不同干湿循环条件下尾矿库蚀变带岩石常规三轴试验,计算得到了抗剪强度参数,分析了其弱化程度;采用精度较高的Morgenstern-Price法,并引入抗剪强度参数的损伤变量,建立含损伤变量的安全系数隐式表达式,通过不平衡推力法求得岩体条块间的法向作用力,多次迭代求得不同干湿循环条件下边坡稳定安全系数,经历20次干湿循环后,边坡稳定安全系数显著降低,存在发生滑坡的潜在威胁。
[Abstract]:The conventional triaxial tests of tailing reservoir alteration zone rocks under different dry and wet cycles were carried out, the shear strength parameters were calculated and the weakening degree was analyzed, the Morgenstern-Price method with high precision was adopted, and the damage variable of shear strength parameters was introduced. The implicit expression of safety factor with damage variable is established, the normal force between rock strips is obtained by unbalance thrust method, and the slope stability safety factor under different dry-wet cycle conditions is obtained by iterating through multiple iterations, after 20 dry and wet cycles. The safety factor of slope stability is significantly reduced, and there is a potential threat of landslide.
【作者单位】： 山东科技大学山东省防灾减灾重点实验室土木工程与建筑学院;临沂大学土木工程与建筑学院;山东科技大学矿山灾害预防控制重点实验室-省部共建国家重点实验室培育基地矿业与安全工程学院;
【分类号】：TV223
本文编号：2285628
[Abstract]:The conventional triaxial tests of tailing reservoir alteration zone rocks under different dry and wet cycles were carried out, the shear strength parameters were calculated and the weakening degree was analyzed, the Morgenstern-Price method with high precision was adopted, and the damage variable of shear strength parameters was introduced. The implicit expression of safety factor with damage variable is established, the normal force between rock strips is obtained by unbalance thrust method, and the slope stability safety factor under different dry-wet cycle conditions is obtained by iterating through multiple iterations, after 20 dry and wet cycles. The safety factor of slope stability is significantly reduced, and there is a potential threat of landslide.
【作者单位】： 山东科技大学山东省防灾减灾重点实验室土木工程与建筑学院;临沂大学土木工程与建筑学院;山东科技大学矿山灾害预防控制重点实验室-省部共建国家重点实验室培育基地矿业与安全工程学院;
【分类号】：TV223
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