CAJ | 학술논문

降雨是诱发斜坡变形的重要因素，斜坡对降雨的响应特征与坡体结构、物质组成、降雨强度密切相关。结合四川绵遂高速公路石麻湾变形体实时监测资料，分析了2012年8月20日雨季至10月10日旱季期间变形体坡表、沉降、地表水平位移及滑面位移对降雨的响应特征。结果表明：在平面空间上，填筑路基区和桥头位置对降雨的响应较强烈，填筑路基区表现为持续累进沉降，桥头位置表现为持续累进水平变形。在竖向上，滑面产生持续累进变形，对降雨的响应十分明显。石麻湾变形体对47．9 mm 的日降雨响应特征更敏感，且对日降雨量在47．9～50．2 mm 的响应表现为突发、部分可逆的过程。
강우시유발사파변형적중요인소，사파대강우적향응특정여파체결구、물질조성、강우강도밀절상관。결합사천면수고속공로석마만변형체실시감측자료，분석료2012년8월20일우계지10월10일한계기간변형체파표、침강、지표수평위이급활면위이대강우적향응특정。결과표명：재평면공간상，전축로기구화교두위치대강우적향응교강렬，전축로기구표현위지속루진침강，교두위치표현위지속루진수평변형。재수향상，활면산생지속루진변형，대강우적향응십분명현。석마만변형체대47．9 mm 적일강우향응특정경민감，차대일강우량재47．9～50．2 mm 적향응표현위돌발、부분가역적과정。
Rainfall is an important factor to induce slope deformation, and the slope response characteristics to rainfall are closely related to the slope structure,material composition,and rainfall intensity.Combined with the real-time monitoring data of the Shimawan deformation body on Miansui highway of Sichuan,this paper analyzes the response characteristics of the deformation body’s slope surface,settlement,ground surface horizontal displacement and sliding surface displacement to rainfalls during the period of 20 August to 10 October 2012.The obtained results show that in the plane,the filling subgrade area and the bridgehead position response to rainfalls is relatively strong. The filling subgrade area appears as a continuous progressive settlement,and the bridgehead position appears as a continuous progressive horizontal deformation.In the vertical direction,the response of the sliding surface displacement to rainfalls is very obvious, producing continuous progressive deformation.The response characteristic of the Shimawan deformation to the daily rainfall of 47.9 mm is more sensitive,while the response to the daily rainfall from 47.9 mm to 50.2 mm is a sudden,but partially reversible process.