干濕循環(huán)對含蝕變帶邊坡穩(wěn)定性影響研究
發(fā)布時(shí)間:2018-10-21 16:04
【摘要】:進(jìn)行了不同干濕循環(huán)條件下尾礦庫蝕變帶巖石常規(guī)三軸試驗(yàn),計(jì)算得到了抗剪強(qiáng)度參數(shù),分析了其弱化程度;采用精度較高的Morgenstern-Price法,并引入抗剪強(qiáng)度參數(shù)的損傷變量,建立含損傷變量的安全系數(shù)隱式表達(dá)式,通過不平衡推力法求得巖體條塊間的法向作用力,多次迭代求得不同干濕循環(huán)條件下邊坡穩(wěn)定安全系數(shù),經(jīng)歷20次干濕循環(huán)后,邊坡穩(wěn)定安全系數(shù)顯著降低,存在發(fā)生滑坡的潛在威脅。
[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.
【作者單位】: 山東科技大學(xué)山東省防災(zāi)減災(zāi)重點(diǎn)實(shí)驗(yàn)室土木工程與建筑學(xué)院;臨沂大學(xué)土木工程與建筑學(xué)院;山東科技大學(xué)礦山災(zāi)害預(yù)防控制重點(diǎn)實(shí)驗(yàn)室-省部共建國家重點(diǎn)實(shí)驗(yàn)室培育基地礦業(yè)與安全工程學(xué)院;
【分類號】:TV223
本文編號: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.
【作者單位】: 山東科技大學(xué)山東省防災(zāi)減災(zāi)重點(diǎn)實(shí)驗(yàn)室土木工程與建筑學(xué)院;臨沂大學(xué)土木工程與建筑學(xué)院;山東科技大學(xué)礦山災(zāi)害預(yù)防控制重點(diǎn)實(shí)驗(yàn)室-省部共建國家重點(diǎn)實(shí)驗(yàn)室培育基地礦業(yè)與安全工程學(xué)院;
【分類號】:TV223
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