关键词: 油库, 渗水试验, 防渗, 环境保护

Abstract: When pollutants enter into groundwater from the surface, they must pass through the vadose zone. The antifouling performance of vadose zone affects the degree and status of groundwater pollution directly. Taking an oil depot construction project in Guangdong Province as an example, the vertical permeability coefficient of natural gas vadose zone is obtained through field double ring water seepage test. The antifouling performance of vadose zone is evaluated. These provide basis for anti-seepage design zoning. Thus, the purpose of protecting soil and groundwater resources can be achieved. According to the test data processing and calculation, the vertical permeability coefficient of the vadose zone in the project reservoir area ranges from 0.039 m/d to 0.047 m/d. Combining with the formation thickness, the antifouling performance of the natural vadose zone in the reservoir area is estimated to be“ medium”. Taking the difficulty in pollution control into comprehensive consideration, the project reservoir area is determined to be the key seepage prevention area.

Key words: oil depotl seepage testl seepage preventionl environmental protection