岩石高边坡的时效变形分析和其工程地质意义.pdfVIP

10049665200008 (02) 014806　J ou rna l of E ng ineer ing Geo log y 　工程地质学报 岩石高边坡的时效变形分析及其工程地质意义 黄润秋 (成都理工学院工程地质研究所　成都　610059) 摘　要　以某拟建水电工程近坝库岸的岩石高边坡变形体为典型实例, 结合现场勘察, 对岩石高边坡时效变形的地质表现进 行了观察分析, 从宏观和微观上揭示了岩体时效变形这一自然高边坡普遍现象的地质特征和变形形迹。并综合分析了该高边 坡的变形破坏机制, 探讨了其稳定性。研究结果表明, 实例高边坡是一处于轻微变形阶段的变形体, 其存在不会对工程建设产 生重大影响。 关键词　高边坡　时效变形　变形破坏机制　稳定性评价 中图分类号: TU 457; 　文献标识码: A - T IM E D EPEND ENT D EFORM AT ION OF A H IGH ROCK SLOPE AND ITS - ENGINEER ING GEOLOGICAL SIGN IF ICANCE HUAN G R un qiu (Cheng d u U niversity of T echnology , Cheng d u　610059) 　 Abstract A lo t of facts from field investigation s show that a tim e dependen t defo rm ation of a h igh rock slope cou ld occu r befo re its in stab ility. A ccom pan ied w ith th is p rocess, a po ten tial slip su rface develop s gradually in the slope, and finally cu t th rough due to p rogressive failu re along it o r som e triggering . , facto rs In th is paper the phenom ena of tim e dependen t defo rm ation of a slope on the left bank of Yalong . R iver are described in detail T hey reveal that the slope has experienced a long term defo rm ation and its . m echan ism can be con sidered as a slip along the w eak bed p lane and buck ling on the foo t of the slope Fu rther evidence indicates that the defo rm ation of the slope is qu ite ligh t, since the slope is under a stab le condition at p resen t. 　 , , ,