CAJ | 학술논문

汶川大地震驱动了大量的同震崩塌、滑坡等地质灾害，这些地质灾害同时造成了山谷中大量的松散堆积物堆积，并将以泥石流的形式进入河流系统，造成震后大规模的泥石流地质灾害，这也是地震灾区在震后面临的最为严峻的问题。根据本项目组的卫星影像处理和实地观测工作，以及前人对同震地质灾害研究获得的数量资料，对同震地质灾害数量在平行于断裂方向和垂直于断裂方向两个方向上的分布特征进行了精确刻画，据此确定了同震地质灾害引发的松散堆积物的空间分布情况，并根据震后三年来泥石流地质灾害发生区域，确定泥石流地质灾害高危区的宏观分布：在北东-南西方向上，映秀与北川之间、平通与青川之间为泥石流地质灾害高危区；在北西-南东方向上，北川-映秀断裂以东10—15km、以西16—37km的范围内为泥石流地质灾害高危区。这些宏观分布数据可为震后群发性泥石流地质灾害的预测和防治提供重要的参考依据。
문천대지진구동료대량적동진붕탑、활파등지질재해，저사지질재해동시조성료산곡중대량적송산퇴적물퇴적，병장이니석류적형식진입하류계통，조성진후대규모적니석류지질재해，저야시지진재구재진후면림적최위엄준적문제。근거본항목조적위성영상처리화실지관측공작，이급전인대동진지질재해연구획득적수량자료，대동진지질재해수량재평행우단렬방향화수직우단렬방향량개방향상적분포특정진행료정학각화，거차학정료동진지질재해인발적송산퇴적물적공간분포정황，병근거진후삼년래니석류지질재해발생구역，학정니석류지질재해고위구적굉관분포：재북동-남서방향상，영수여북천지간、평통여청천지간위니석류지질재해고위구；재북서-남동방향상，북천-영수단렬이동10—15km、이서16—37km적범위내위니석류지질재해고위구。저사굉관분포수거가위진후군발성니석류지질재해적예측화방치제공중요적삼고의거。
Wenchuan earthquake triggered a large number of geological disasters： collapse and landslide, which lead to a lot of loose deposits in the valleys. The loose deposits will be scoured to the rivers in the debris flow disasters. It＇s the most important problem in the earthquake-hit areas after earthquake. Based on the satellite imagery, site experiments and the quantitative text of eoseismal geological disasters researched by others, the project described the distribution characteristics of eoseismal geological disasters in the two directions： one direction is parallel to the rupture and the other direction is vertical to the rupture. Based on the distribution of debris flows in the three years after earthquake, the project also confirms the macroscopic distribution of loose deposits and the macro- scopic distribution of the area vulnerable to debris flows, which is the direction of northeast to southwest, the areas between Yingxiu and Beichuan, Pingtong and Qingchuan are vulnerable to debris flows. In the direction of northwest to southeast the area, from where the distance is 10 - 15 km east off Beichuan - Yingxiu fault and 16 -37 km east off Beichuan - Yingxiu fault respectively, is vulnerable to the disaster of debris flows. The data of macroscopic distribution will provide an important reference for the prevention and prediction of the debris flows after earthquake.