CAJ | 학술논문

地质灾害的发生与降雨历时、降雨量及降雨雨型有密切的关系,不同雨型的降雨诱发地质灾害的诱发机制具有明显的差异性.本文通过收集的降雨实况与地质灾害反馈资料,将诱发地质灾害的降雨雨型分为3种类型:台风降雨、持续强降雨和局地暴雨.研究表明,台风降雨型降雨诱发地质灾害具有"即雨即滑"的特点,即地质灾害的发生与降雨在时间上具有较好的对应关系;地质灾害发生空间位置与台风运移轨迹也基本一致.多为群发型地质灾害,灾害规模较小,一般为表层或浅层滑坡、崩塌.持续强降雨型降雨诱发地质灾害,在强降雨过程中地质灾害具有同步发生的特点;在降雨强度不大但连续降雨过程中,地质灾害具有一定的滞后效应;在地质灾害大规模发生后,诱发新的地质灾害雨量阈值提高.局地暴雨型降雨诱发的地质灾害往往集中发生在出现局地暴雨的当日当地.
지질재해적발생여강우력시、강우량급강우우형유밀절적관계,불동우형적강우유발지질재해적유발궤제구유명현적차이성.본문통과수집적강우실황여지질재해반궤자료,장유발지질재해적강우우형분위3충류형:태풍강우、지속강강우화국지폭우.연구표명,태풍강우형강우유발지질재해구유"즉우즉활"적특점,즉지질재해적발생여강우재시간상구유교호적대응관계;지질재해발생공간위치여태풍운이궤적야기본일치.다위군발형지질재해,재해규모교소,일반위표층혹천층활파、붕탑.지속강강우형강우유발지질재해,재강강우과정중지질재해구유동보발생적특점;재강우강도불대단련속강우과정중,지질재해구유일정적체후효응;재지질재해대규모발생후,유발신적지질재해우량역치제고.국지폭우형강우유발적지질재해왕왕집중발생재출현국지폭우적당일당지.
Geo-hazards have some correlations with rain-time, rainfall and rain-type. For different rain-types, rainfall induced geo-hazards have different characteristics. In this paper, according to rainfall and geo-hazards data, the rainfalls that can induce geo-hazards are classified into three types. They are typhoon rainfall, sustained rainfall and regional rainstorm. The characteristics of geo-hazards induced by different rainfall-types are different. Typhoon rainfall induced geo-hazards have the characteristics of " hazards and rainfall consistently". It is consistent in time and space. The hazards are almost clustery accruing, shallow sliding or rock-fall. For sustained rainfall, geo-hazards have the hysteresis action with small rain-intensity. But for inducing new hazards, it needs larger rainfall after hazards occurred. Geo-hazards induced by regional rainstorm often occur in the day and space as same as the rainfall.