螺河桥闸重建工程地质条件分析

Analysisofengineering geological conditions for Luohe Sluice Reconstruction Project

通过对螺河桥闸重建工程2#、3#闸址的地质资料收集分析、野外地质测绘、钻探及室内外试验,结合场地土层剪切波速测定等手段,初步查明两个闸址的工程地质条件,得出软弱层分布厚度特征、砂层渗透性以及对工程地震、液化及渗漏可能的影响。重点从地层组成及分布、闸基承载力、抗滑稳定、防渗处理等方面对两个闸址进行对比分析,认为2#闸址工程地质条件优于3#闸址,初步推荐2#闸址为重建闸址。

For the No.2 and No.3 sluice sites of Luohe Sluice Reconstruction Project, the engineering geological conditions had been preliminarily ascertained by collection and analysis of geological data, field geological mapping and drilling, indoor and outdoor tests, site soil shear wave velocity measurement etc. The ascertained data include distribution and thickness of weak layers as well as permeability of sand layers, their possible influence on engineering earthquake, liquefaction and leakage. Two sluice sites were compared and analyzed in respects of stratum composition and distribution, foundation bearing capacity, sliding stability, seepage control. The No. 2 sluice site was preliminarily recommended with better engineering geological conditions.