CAJ | 학술논문

对处于蠕滑阶段的边坡而言，准确确定蠕滑段和锁固段是进行稳定性评价及演化趋势预测的基础和前提。以我国西南山区某水库型岸坡变形体为例，在综合分析岸坡工程地质条件的基础上，通过联合运用野外现场地质调查、地表位移监测、钻孔、平硐、深部位移监测、物探等多种勘察手段，查明了岸坡的结构特征，并分别对岸坡进行地表和深部变形分区。在此基础上，结合当前稳定性现状，划分出岸坡蠕滑段与锁固段。结果表明：（1）岸坡在河谷下切过程中发生了弯曲倾倒变形，弯曲折断面深度为20～80m；（2）岸坡前部为蠕滑段，中部为锁固段，后部为拉裂段，具备滑移－拉裂－剪断“三段式”发育特征。研究结果可直接用于该岸坡变形体的稳定性评价，且对于同类型处于蠕滑阶段边坡的勘察手段及综合分析具有一定的借鉴意义。
대처우연활계단적변파이언，준학학정연활단화쇄고단시진행은정성평개급연화추세예측적기출화전제。이아국서남산구모수고형안파변형체위례，재종합분석안파공정지질조건적기출상，통과연합운용야외현장지질조사、지표위이감측、찬공、평동、심부위이감측、물탐등다충감찰수단，사명료안파적결구특정，병분별대안파진행지표화심부변형분구。재차기출상，결합당전은정성현상，화분출안파연활단여쇄고단。결과표명：（1）안파재하곡하절과정중발생료만곡경도변형，만곡절단면심도위20～80m；（2）안파전부위연활단，중부위쇄고단，후부위랍렬단，구비활이－랍렬－전단“삼단식”발육특정。연구결과가직접용우해안파변형체적은정성평개，차대우동류형처우연활계단변파적감찰수단급종합분석구유일정적차감의의。
To the creeping slope,accurate determination of creep segment and lock segment is the basement of stability evaluating and evolution trend predicting.This paper examines a deformable body of bending rock bank slope in southwest mountainous of China.The examination is based on the comprehensive analysis on the slope engineering geological conditions.The field investigation, ground displacement monitoring, drilling, adit, underground displacement monitoring and geophysical prospecting are used to detecting the structural characteristics of the bank slope.Then,the ground and underground deformation zoning is taking to the slope.The present stability status is examined.The locked segment and creeping segment are divided accordingly.The results show the follows. (1)The bank slope has occurred bending and toppling during the river bed scour.The depth of bending fracture plane is between 20m and 80m.(2)Creeping segment is located in middle-anterior and posterior of the slope.The locked segment is located in the middle of the slope.These results can be used to stability evaluating of these slopes.They have some reference meaning to investigation method and comprehensive analysis of other creeping slopes.