Recharge well construction method adopting electroosmosis

A construction method and technology of reinjection wells, which are applied in the field of underground engineering, can solve problems such as poor recharge effect and increase the influence range of recharge construction, and achieve the effects of convenient construction, reduced interference, and improved permeability

Active Publication Date: 2016-12-21
JINAN RAILWAY TRANSPORT GRP CO LTD
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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 r

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  • Recharge well construction method adopting electroosmosis
  • Recharge well construction method adopting electroosmosis
  • Recharge well construction method adopting electroosmosis

Examples

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Example Embodiment

[0091] Example 1:

[0092] The main body of a subway station has a total length of 356.6m, which is an underground two-story island platform station. The standard section of the main structure foundation pit is about 16.8m deep and 19.7m wide, the bottom elevation of the structure is about 11.50m, and the covering thickness of the main body of the station is about 2.5~ 4.0m, using open excavation method for construction, using retaining pile + anchor cable support system. According to the survey report, the groundwater is mainly pore phreatic water and confined water in the Quaternary loose layer. The phreatic water level is 8.5~11.5m, the water level is 22.69~25.60m. The aquifer is mainly loess and silty clay layer; confined water The buried depth of the stable water level is 9.5 to 11.2m, the elevation of the stable water head is 23.69 to 25.9m, and the aquifer is mainly silty clay layer. In order to ensure the safety of foundation pit construction, it is necessary to carry ou...

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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...

Claims

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Application Information

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IPC IPC(8): E02D1/00E02D19/10E02D3/11
CPCE02D1/00E02D3/11E02D19/10
Inventor 王国富胡冰冰路林海李罡
Owner JINAN RAILWAY TRANSPORT GRP CO LTD
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