The buried water pipe leaks. Is there any way to check it?

Valve plug listening method and ground listening method can be used.

Listen with a valve plug: first, make sure whether the water pipe is really leaking, plug both ends, find a machine to test the pressure of the water pipe, try to add some pressure, and then wait for half an hour to see if the pressure is obviously reduced. If it is, it is really missing. Use this method to determine which section of the water pipe is leaking. After confirming the conditions, replace the leaking section of the water pipe. If there are no conditions, you can lay another replacement and throw away the original one. Repair is not recommended, because the pressure in the water pipe is high and it will leak soon.

Ground listening method: When the leaking pipe section is determined by pre-positioning method, the leakage point of underground pipeline is detected on the ground with electronic amplification listening instrument and accurately positioned. The way of listening and measuring is to listen and compare point by point along the direction of the leaking pipeline within a certain distance. When the ground pickup is close to the leakage point, the stronger the listening sound, the maximum at the top of the leakage point.

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