贵州北盘江特大桥岩体工程地质评价

STUDY ON ENGINEERING GEOLOGY FOR ROCK-MASS OF BEIPANJIANG BRIDGE IN GUIZHOU

摘要: 针对西部峡谷地区的公路大桥勘察的主要工程地质间题,如桥塔边坡稳定性问题、桥基、持力层选择间题等,以贵州省关(岭)兴(义)高等级公路北盘江特大桥主要岩土工程问题分析为例,根据岩体非线性变形破坏理论,结合岩体结构面模拟及Hock-Brown强度曲线,确定了桥位区斜坡的潜在滑动面、对该桥梁勘察中的高边坡稳定性问题、岩溶地质间题、桥位持力层选择问题以及桥基承载力问题作了进一步探讨,为实际工程的设计奠定了地质基础。

Abstract: By the geo-technique survey of Beipanjiang Highway Special Bridge, according to the rock-mass mechanical non-linear theories, based on the rock-mass discontinuities model, controlling discontinuities were made out of. More important.problems, such as the slope stability, karst geology, holding stratum & bedrock capability, were studied in bridge geo-technique survey for project designs.