Recharge well construction method adopting electroosmosis

Abstract

The invention discloses a recharge well construction method adopting electroosmosis. The method comprises the following steps: determining groundwater level depth and soil layer lithologic distribution of a recharge field; according to a recharge target aquifer, constructing multiple recharge tube wells on the same side outside a foundation pit, performing a pumping test and a recharge test on the recharge tube wells to determine a permeability coefficient, a recharge influence radius and a recharge quantity; further determining a recharge scheme according to results of the pumping test and the recharge test, and constructing other recharge tube wells outside the foundation pit in the recharge field; arranging electrodes in positions certain distances away from the corresponding recharge tube wells and on one sides, away from the foundation pit in the recharge field, of the recharge tube wells; connecting the recharge tube wells through wires to form a recharge tube well conductive circuit, connecting the electrodes to form an electrode conductive circuit, connecting the recharge tube well conductive circuit with a power cathode, and connecting the electrode conductive circuit with a power anode. With adoption of electroosmosis, the permeability of soil mass around the recharge wells is improved, dissipation of recharge water is accelerated, and interference in the groundwater environment can be reduced.

Description

technical field [0001] The invention belongs to the fields of underground engineering such as construction, water conservancy, transportation, environment, etc., and specifically relates to a construction method of an electroosmotic recharge well. Background technique [0002] In strata with good water richness and large water inflow, in order to ensure the construction safety of foundation pit engineering, generally speaking, engineering measures such as foundation pit dewatering are required. In the area of ​​the spring groundwater system, because the hydrogeological unit is relatively closed, when the foundation pit dewatering engineering measures are adopted in the underground engineering construction, the large precipitation will affect the groundwater seepage environment around the foundation pit, causing geological disasters such as surface subsidence, and at the same time It will affect the supply of spring water, and in severe cases, it will cause the spring water t...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, aiming at areas with poor permeability, to provide a construction method for electroosmotic recharge wells, to overcome the shortcomings of traditional recharge construction methods in poor permeability formations, and to improve soil quality. Improve the permeability of the body, increase the impact range of recharge construction, improve the efficiency of recharge construction, and protect groundwater resources

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