Device and method for measuring erosion and friction coefficient of sand-containing hydrate slurry to pipeline

The invention relates to a device and a method for measuring erosion and friction resistance coefficients of sand-containing hydrate slurry to a pipeline. The device is composed of a sample preparation system, a pipeline conveying system, a data acquisition and analysis system and a control system. The sample preparation system comprises a preparation kettle and a sand adding funnel, and the pipeline conveying system comprises a circulating pump, an electrical resistance tomography imager, a refrigerating machine, an electromagnetic flowmeter and a circulating pipeline. The data acquisition and analysis system comprises an electrical resistance tomography imager, an electromagnetic flowmeter, a differential pressure gauge and an ultrasonic wall thickness measuring instrument, and the control system comprises a control cabinet and a computer. The method comprises the steps that a preparation kettle prepares natural gas hydrate slurry, a sand adding funnel is opened, and gravel enters acirculation pipeline alon