Foundation treatment is a basic task of civil engineering. Through 5 group control experiments, aquatic environment harm, source and detection method in the process of foundation treatment were analyzed. The experimental results show that sea water could suppress the precipitation of alkaline substances in concrete block and water environment are more likely to precipitate alkaline substances. The amount of ion precipitation in water samples was larger than that in sea water samples. And adding admixtures in concrete block is more advantageous to the precipitation of calcium ions. In terms of the quality of background water, both cast-in-place concrete and precast concrete piles have little impact on water quality. But pH value would get above the standard line. If so, the acid gas could be used to get the pH value lower. Finally, the corresponding prevention measures from three aspects, which includes:system construction, raw materials choice and scheme choice were put forward .%地基处理是土木工程的一项基础性工作. 通过5组对照实验,分析地基处理过程中水质环境污染的危害、来源及检测方法. 实验结果表明:海水会抑制混凝土试块中碱性物质的析出,清水环境更易析出碱性物质. 清水水样中铁离子析出量要比海水水样析出量大,试块中添加外加剂更有利于钙离子的析出.对于整个地下水质来讲,不论是现浇混凝土还是预制混凝土桩均对水质的影响不大,唯一要注意的是,pH值会在某一阶段超标,可通过通入酸性气体以降低pH值. 最后,分别从制度建设、原材料选用以及方案选择3个层面提出防治措施建议.
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