CAJ | 학술논문

针对2013年1月11日云南省镇雄县果珠乡高坡村发生山体滑坡的特点及滑坡发生过程中存在的疑问，基于灾后及时地质调查、滑坡测量、土体取样和物理力学试验，对滑坡的成灾环境和机制进行研究，结果表明：(1)在云贵高原北缘垂直气候和微地貌影响下，在所谓的旱季(1月)局地仍有较丰沛的降水；(2)历史成因和所在层位决定下三叠统飞仙关组(T1f)崩坡堆积物是一套易饱水的高孔隙度易滑土层；(3)滑源高孔隙度土饱和流态化启动和滑动液化是灾害突然发生和远程运动的力学机制；(4)结合附近煤矿小规模开采、煤层深埋和滑坡发生时无瓦斯爆炸、无塌方的事实，可以排除地下采矿诱发滑坡的猜测。镇雄滑坡的成灾地质条件和滑动机制在我国西南山区具有一定的代表性，在今后的减灾、防灾工作中需要关注。
침대2013년1월11일운남성진웅현과주향고파촌발생산체활파적특점급활파발생과정중존재적의문，기우재후급시지질조사、활파측량、토체취양화물리역학시험，대활파적성재배경화궤제진행연구，결과표명：(1)재운귀고원북연수직기후화미지모영향하，재소위적한계(1월)국지잉유교봉패적강수；(2)역사성인화소재층위결정하삼첩통비선관조(T1f)붕파퇴적물시일투역포수적고공극도역활토층；(3)활원고공극도토포화류태화계동화활동액화시재해돌연발생화원정운동적역학궤제；(4)결합부근매광소규모개채、매층심매화활파발생시무와사폭작、무탑방적사실，가이배제지하채광유발활파적시측。진웅활파적성재지질조건화활동궤제재아국서남산구구유일정적대표성，재금후적감재、방재공작중수요관주。
On 11th of January,2013,a catastrophic landslide with an estimated volume of 250 000 m3 occurred in Zhenxiong County,Southwestern China. The geological surveying,the landslide mapping,the soil sampling and the laboratory tests were carried out afterwards to study the catastrophic causes and mechanisms of the landslide. It was found that there was an abundant precipitation even in the dry season of January due to the effects of the vertical climate and the micro geomorphology. The late Triassic colluvium of Feixianguan formation(T1f ) in the stratum of the slope was found to have a high porosity and to be easily saturated which was very likely prone to landsliding. The initiation of the fluidization of the saturated soil of high porosity and the liquefaction due to the movement were found to be the mechanisms of the sudden occurring and the long range movement of the landslide. The mining activity on the deeply buried coal seam over 300 m away from the landslide were excluded to be the cause of the landslide based on the facts that there were no mine disasters and no mine collapses when landslide occurred.