本文選題：凹邊坡　切入點(diǎn)：三維極限平衡法　出處：《中國(guó)安全科學(xué)學(xué)報(bào)》2016年07期 　論文類型：期刊論文

【摘要】：為揭示拱形約束條件下凹邊坡穩(wěn)定性的三維效應(yīng),基于極限平衡理論,從定量認(rèn)識(shí)土體環(huán)向側(cè)壓力角度出發(fā),提出新的凹邊坡穩(wěn)定性三維計(jì)算方法。通過將該方法與經(jīng)典三維極限平衡法進(jìn)行對(duì)比,驗(yàn)證該方法的準(zhǔn)確度。選取典型工程實(shí)例,采用該方法與數(shù)值模擬相結(jié)合,研究平面曲率對(duì)凹邊坡空間滑坡模式與三維穩(wěn)定性的影響。結(jié)果表明:該方法的精度較高;平面曲率對(duì)凹邊坡的滑體空間形態(tài)、尺寸與穩(wěn)定性有一定影響,即隨平面曲率的減小,滑體走向長(zhǎng)度與滑面深度均近線性增大,穩(wěn)定系數(shù)呈指數(shù)型規(guī)律降低,工程中可通過增大凹邊坡的平面曲率改善邊坡穩(wěn)定性和減小滑坡規(guī)模。
[Abstract]:In order to reveal the three-dimensional effect of the stability of concave slope under arch constraint condition, based on the theory of limit equilibrium, this paper starts from the angle of quantitative understanding of the circumferential lateral pressure of soil. A new three-dimensional calculation method for the stability of concave slope is proposed. The accuracy of the method is verified by comparing the method with the classical three-dimensional limit equilibrium method. A typical engineering example is selected and the method is combined with numerical simulation. The influence of plane curvature on the spatial landslide model and 3D stability of concave slope is studied. The results show that the accuracy of the method is high, and the plane curvature has certain influence on the shape, size and stability of the sliding body of the concave slope. That is, with the decrease of plane curvature, the direction length and depth of sliding surface increase linearly, and the stability coefficient decreases exponentially. In engineering, the slope stability can be improved by increasing the plane curvature of the concave slope and the landslide scale can be reduced.
【作者單位】： 遼寧工程技術(shù)大學(xué)礦業(yè)學(xué)院;
【基金】：國(guó)家自然科學(xué)基金重點(diǎn)資助(U1361211);國(guó)家自然科學(xué)基金資助(51474119);國(guó)家自然科學(xué)基金青年基金資助(51104084) 遼寧省煤炭資源安全開采與潔凈利用工程研究中心開放基金資助(LNTU15KF08)
【分類號(hào)】：TD80

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本文編號(hào)：1605877