【摘要】：研究1786年磨西地震觸發(fā)的摩崗嶺滑坡特征及形成演化過(guò)程。采用資料收集、地面調(diào)查、三維實(shí)體模型、高精度遙感影像、理論分析、數(shù)值模擬等技術(shù)方法,對(duì)摩崗嶺滑坡的形成進(jìn)行全過(guò)程演化分析。摩崗嶺地震滑坡演化過(guò)程分為6個(gè)階段:河谷高邊坡形成階段以及斜坡淺表部巖體卸荷拉裂階段、卸荷拉裂隙擴(kuò)展階段、潛在滑動(dòng)面形成階段、震動(dòng)拉裂和高速啟動(dòng)階段、拋射撞擊潰散階段、滑體堵江及潰決階段。其成因機(jī)理為卸荷震動(dòng)拉裂-剪斷拋射堆積。
[Abstract]:The characteristics and evolution of the Morangling landslide triggered by the Moxi earthquake in 1786 are studied. Data collection, ground investigation, three-dimensional solid model, high-precision remote sensing image, theoretical analysis, numerical simulation and other techniques were used to analyze the whole process evolution of Morangling landslide. The evolution process of the Morangling earthquake landslide is divided into six stages: the formation stage of the high slope in the valley, the stage of unloading and pulling crack of the shallow rock mass of the slope, the stage of expansion of the unloading and pulling fracture, the stage of formation of the potential sliding surface, the stage of seismic pull-fracture and the stage of high-speed start-up. Ejection impingement stage, sliding body blockage and collapse stage. Its genesis mechanism is unloading vibration pull-crack-shear ejection accumulation.
【作者單位】： 中國(guó)地質(zhì)調(diào)查局成都地質(zhì)調(diào)查中心;四川省地質(zhì)工程勘察院;地質(zhì)災(zāi)害防治與地質(zhì)環(huán)境保護(hù)國(guó)家重點(diǎn)實(shí)驗(yàn)室(成都理工大學(xué));成都市勘察測(cè)繪研究院;
【基金】：中國(guó)地質(zhì)調(diào)查局國(guó)土資源大調(diào)查項(xiàng)目(DD20160272,12120114069501)
【分類(lèi)號(hào)】：P642.22

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