CAJ | 학술논문

针对西南某大型水电站高达近106 m的人工进水口垂直高边坡,通过现场跟踪施工的地质调查工作,系统研究了复杂地质条件和高地应力环境下岩石高边坡大坡比、强开挖所表现的变形响应,揭示了此类边坡变形响应的基本规律及特殊表现.研究表明:高边坡开挖过程中,边坡的变形与开挖过程有较强的同步性.变形主要受开挖卸荷影响,随着开挖的进行,坡体的变形随开挖面的远离表现出总体衰减,最终稳定的响应特征.变形可归纳为3种性质,即浅表松弛型、协调渐变型和回弹错动型,总体以浅表松弛型为主等.
침대서남모대형수전참고체근106 m적인공진수구수직고변파,통과현장근종시공적지질조사공작,계통연구료복잡지질조건화고지응력배경하암석고변파대파비、강개알소표현적변형향응,게시료차류변파변형향응적기본규률급특수표현.연구표명:고변파개알과정중,변파적변형여개알과정유교강적동보성.변형주요수개알사하영향,수착개알적진행,파체적변형수개알면적원리표현출총체쇠감,최종은정적향응특정.변형가귀납위3충성질,즉천표송이형、협조점변형화회탄착동형,총체이천표송이형위주등.
Through the abundant geological investigation of construction tracing in situ,the intake slope with vertical height of 106 m at a large hydropower station in Southwest China.the deformation of the high rock slope with great gradient is studied under the conditions of complex geology and high in-situ stress.Through systematical study,the basic laws and special characteristics of its deformation responses are acquired and classified as follows:①During the slope excavation,it is found that there is strong synchronism between the slope deformation and its excavation process.②The slope deformation is mainly influenced by excavation.③The slope deformation generally is weakening with the distance between the excavation plane and the monitoring position,whose responding features of ultimate stability have three stages; that is,rapid increase stage of deformation,slow enhancing stage and the stable stage.④The high slope deformation can be classified into 3 types,the shallow surface relaxation,the harmonized gradual change and rebound fluctuation.The main one is the shallow surface relaxation.