本文選題：降雨型滑坡　切入點(diǎn)：垂直位移方向率　出處：《巖土力學(xué)》2017年12期

【摘要】：針對降雨型滑坡位移量預(yù)測參數(shù)失穩(wěn)判據(jù)的局限和不足,并根據(jù)滑坡全息論的基本原理,提出和確定了滑坡垂直位移方向率預(yù)測參數(shù),且指出該參數(shù)是邊坡穩(wěn)定性演化分析與評價(jià)的一個(gè)有效位移動(dòng)力參數(shù),具有位移量或位移速率不可替代的評價(jià)和預(yù)測作用。同時(shí),系統(tǒng)分析了降雨型滑坡位移與地下水位變化規(guī)律及其相互作用關(guān)系,對該類邊坡穩(wěn)定性的不同演化階段的表層垂直位移方向率形成機(jī)制與變化規(guī)律進(jìn)行了彈塑性力學(xué)分析與評價(jià),分別確定了邊坡壓縮穩(wěn)定變形階段和塑性失穩(wěn)變形階段的表層垂直位移方向率與其穩(wěn)定性演化的定量關(guān)系,并依此運(yùn)用數(shù)理統(tǒng)計(jì)均方差基本原理,建立了該類滑坡垂直位移方向率的整體失穩(wěn)監(jiān)測預(yù)警判據(jù)。最后運(yùn)用新灘滑坡A_3、B_3監(jiān)測點(diǎn)垂直位移方向率對該滑坡穩(wěn)定性演化過程與失穩(wěn)規(guī)律進(jìn)行了后驗(yàn)分析與評價(jià),其分析預(yù)測結(jié)果與邊坡實(shí)際變形失穩(wěn)規(guī)律基本相吻合,表明該參數(shù)在該類滑坡預(yù)測預(yù)報(bào)與監(jiān)測預(yù)警中具有一定的有效性與實(shí)用性。
[Abstract]:In view of the limitation and deficiency of the instability criterion of landslide displacement prediction parameters, and according to the basic principle of landslide holography, the prediction parameters of landslide vertical displacement direction rate are proposed and determined.It is pointed out that this parameter is an effective displacement dynamic parameter for the analysis and evaluation of slope stability, and it can not be substituted for the evaluation and prediction of displacement or displacement rate.At the same time, the relationship between the displacement of rainfall landslide and groundwater level and its interaction is analyzed systematically.The forming mechanism and variation law of vertical displacement direction rate in different evolution stages of this kind of slope are analyzed and evaluated by elastoplastic mechanics.The quantitative relationship between the vertical displacement direction rate of the surface layer and the stability evolution of the slope in the compression stable deformation stage and the plastic unstable deformation stage is determined, and the basic principle of mathematical statistical mean square error is applied.An early warning criterion for global instability monitoring of this kind of landslide with vertical displacement direction rate is established.Finally, a posterior analysis and evaluation of the landslide stability evolution process and instability law are carried out by using the vertical displacement direction rate of the monitoring point Aji _ 3O _ B _ 3 of Xintan landslide. The results of the analysis and prediction are basically consistent with the actual deformation and instability law of the slope.It is shown that this parameter is effective and practical in the prediction, monitoring and early warning of this kind of landslide.
【作者單位】： 三峽大學(xué)三峽庫區(qū)地質(zhì)災(zāi)害教育部重點(diǎn)實(shí)驗(yàn)室;青島理工大學(xué)地質(zhì)環(huán)境與效應(yīng)研究中心;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(No.41372297) 三峽庫區(qū)地質(zhì)災(zāi)害教育部重點(diǎn)實(shí)驗(yàn)室(三峽大學(xué))開放基金(No.2017KDZ03) 高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金(No.20113721110002) 山東省自然科學(xué)基金項(xiàng)目(No.ZR2011DL002) 山東省藍(lán)色經(jīng)濟(jì)區(qū)工程建設(shè)與安全協(xié)同創(chuàng)新中心資助項(xiàng)目~~
【分類號(hào)】：P642.22

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本文編號(hào)：1714032