Method for measuring in-situ simulated water quality in pipe network under water source switching condition

The invention provides a method for measuring in-situ simulated water quality in a pipe network under a water source switching condition. The method comprises the following steps: through separation treatment to a selected pipe section of a water supply system, an in-situ test pipe section, used for testing, of the water supply system is obtained, then testing is performed on the in-situ test pipe section, and detection is performed on water quality of each of local water of the water supply system and to-be-switched replacement water used for replacing the local water, so that a result about change of a water quality parameter under water source switching is obtained. According to the method provided by the invention, part of pipe sections are separated on an existing pipe, and test pipes do not need to be digged out completely, so that excavation workload is reduced, improvement cost is low, pipe sections in the excavation-limited area can be still tested, movement of the pipe sections is avoided, influence on existing physical, chemical and microbiological systems in the pipe is small, and obtained test data can fully simulate the situation about change of water quality in the existing pipe under the water source switching condition, which has very important guiding significance in stability of water quality in the water supply pipe network under the predicted water source switching condition.