广州市西江引水工程鸦岗配水泵站地质条件分析及建议

Analysis and suggestion of geological conditions of Yagang pumping station of Guangzhou west river water diversion project

鸦岗配水泵站作为西江引水工程的主要建筑物,地质条件复杂,既分布有软土、砂土,也发育有岩溶、土洞,地下水十分丰富,且管线伴行交通繁忙。通过钻探、注水及抽水试验、标贯、波速测试等勘察手段,查明泵站的岩土层组成及分布,重点查明了软土、砂层和岩溶、土洞等不良地质条件的分布,分析了基槽流砂、管涌、隆起的可能性,进行工程地质评价,提出基槽支护及地基处理方案建议,为后续工作提供准确的地质资料。

Yagang pumping station as the main building of west fiver water diversion project,the geologic con- ditions are complex.Both the distribution of soft soil,sand, but also developed karst, cave soil, groundwater is very rich, and the pipeline with heavy traffic.Through launching field geological survey, investigating ,drilling, testing and such means as on-the-spot ultrasonic wave are tested.It Investigated the geological situation, especially the bad geological condition of soft soil,sand,karst, cave soil, etc.and analyzed the possibility of quicksand, piping,uplift,evaluate the conditions ;It Proposed slot supporting base and foundation treatment program proposal to provide accurate geological information for the follow-up work.