1, controlled by groundwater. A 60-meter-deep well and a 100-meter-deep well are in the same underground water body, and the water pressure and water level height between them will affect each other.
2. Well spacing and direction. A 60-meter-deep well and a 100-meter-deep well are very close and in the same direction, so the water flow between them will affect each other.
3, the stability of the borehole wall. For wells with a depth of 60 meters and wells with a depth of 100 meters, the shaft wall is not completely reinforced, so the water flow or pressure between them will cause the shaft wall to collapse or deform.