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设计室内仿真系统，直接观察致病菌在地下含水层中的存活时间，作为划定水源井第一保护带的依据。结果，在模拟的水源地含水层温度１５～１８℃，水的渗流速度１５ｃｍ／ｄ的条件下，鼠伤寒沙门氏菌存活时间为７０天。
The indoor simulation system is designed to directly observe the survival time of pathogens in underground aquifers as the basis for delineating the first protective zone of water source wells. As a result, Salmonella typhimurium survived for 70 days at a simulated aquifer water temperature of 15-18 ° C and a water seepage velocity of 15 cm / d.