A kind of Quaternary micro-confined water retaining spring reinjection well and its method

Abstract

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.

Description

technical field [0001] The invention relates to a Quaternary micro-confined water spring conservation and reinjection well and a method thereof. Background technique [0002] For relatively closed hydrogeological unit areas, the groundwater in the spring area has the characteristics of shallow burial and large water content. During the construction of underground engineering, the excavation of foundation pits in the soil has a large amount of precipitation, which will threaten the spouting of spring groups and affect the surrounding geology. Environmental damage and adverse effects on surrounding buildings. In order to balance the problems of urban construction and geological environment protection, pressurized recharge is the most effective solution according to the needs of regional hydrogeological characteristics. However, the existing common recharge well technology has the following defects: During the process, the permeability of the recharged aquifer will be destroye...

AI Technical Summary

Problems solved by technology

In order to balance the problems of urban construction and geological environment protection, pressurized recharge is the most effective solution according to the needs of regional hydrogeological characteristics. However, the existing common recharge well technology has the following defects: During the process, the penetration capacity of the recharged aquifer will be destroyed, and the recharge volume will decay with time. The water-proof concrete on the wall of the recharged well and the formation will overflow, and the pump must be restarted when it is raised, which will affect the recharge efficiency.

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