Quaternary micro-confined water spring protection type recharging well and method

The invention discloses a quaternary micro-confined water spring protection type recharging well and a method. The quaternary micro-confined water spring protection type recharging well comprises a wellhead part, an underground part and a protecting layer, wherein the underground part comprises a well pipe and a water filtering pipe which are sequentially connected from top to bottom, the wellhead part is arranged at the end opening of the recharging well, and is connected with the underground part, the protecting layer comprises double water sealing layers, a water separating layer and double filtering layers, the double water sealing layers coat the well pipe, and are arranged at the outer side of the well pipe, the water separating layer is arranged at the outer side of the double water sealing layers, the double water filtering layers are arranged at the exterior of the water filtering pipe, a pump chamber is arranged at the lower end of the water filtering pipe, and a return lift submersible pump is arranged in the pump chamber. The quaternary micro-confined water spring protection type recharging well has the advantages that the problem of water overflowing of a recharging well wall caused by long-time sustained pressurizing is solved, and the recharging capacity is improved; on the basis of solving the physical blockage problem of the recharging well, the disturbance on the infiltration capacity of a water-containing layer in the recharging process is reduced, and the original infiltration capacity of the water-containing layer is greatly guaranteed.