發(fā)布時間：2018-07-13 09:19

【摘要】：削方減載因其方法簡單、施工方便和抗滑效果良好,已成為常用的滑坡治理措施之一,但削方位置的不同對坡體穩(wěn)定性的影響差異較大。為了直觀說明這種影響,借鑒結(jié)構(gòu)力學(xué)中移動荷載作用下的影響線概念,以削方減載位置的不同作為可變荷載,以每次削方減載情況下對應(yīng)的穩(wěn)定系數(shù)作為影響量,建立相應(yīng)的滑坡削方減載影響線計算分析方法,并根據(jù)穩(wěn)定系數(shù)的大小,結(jié)合工程實際,確定最優(yōu)的滑坡削方減載位置。最后以某滑坡為實例,對其不同位置情況下的削方減載對應(yīng)的穩(wěn)定系數(shù)進(jìn)行了統(tǒng)計,根據(jù)穩(wěn)定系數(shù)的大小,結(jié)合坡體情況,直觀地給出了最優(yōu)的卸載位置,為合理和科學(xué)地進(jìn)行坡體削方減載提供了依據(jù)。該方法計算原理簡單,結(jié)果清晰直觀,可對同類滑坡治理工程提供參考和借鑒。
[Abstract]:Because of its simple method, convenient construction and good anti-slide effect, cutting square load reduction has become one of the commonly used landslide treatment measures, but the influence of cutting position on the stability of slope body is quite different. In order to illustrate this effect, the concept of influence line under moving load in structural mechanics is used for reference, the variable load is the different position of cutting load, and the stability coefficient corresponding to the condition of load reduction is taken as the influence quantity. The corresponding calculation and analysis method of load reduction influence line of landslide cutting is established. According to the magnitude of stability coefficient and combined with engineering practice, the optimal load reduction location of landslide cutting is determined. Finally, taking a landslide as an example, the stability coefficient corresponding to the load reduction of the cutting side at different locations is counted. According to the magnitude of the stability coefficient and the slope body situation, the optimal unloading position is given intuitively. The results provide a basis for the reasonable and scientific load reduction of slope cutting. The method is simple in principle, clear and intuitive, and can be used as reference for similar landslide treatment projects.
【作者單位】： 長安大學(xué)地質(zhì)工程與測繪學(xué)院安全工程系;
【基金】：中央高�；究蒲袠I(yè)務(wù)費(fèi)資助項目(310826172203,310826161018) 陜西省科技統(tǒng)籌創(chuàng)新工程計劃項目(2016KTZDSF04-05-04)~~
【分類號】：P642.22

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