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Method and ancillary facility for preventing and treating salinization of surface soil of underground reservoirs

A technology for underground reservoirs and reservoirs, applied in land preparation methods, soil lifting machinery, design optimization/simulation, etc., can solve problems such as environmental pollution, slow infiltration of recharge water bodies, and topsoil salinization, and reduce topsoil salt ions. Concentration, reduction of residence time, long-term effective control effect

Active Publication Date: 2020-03-24
TSINGHUA UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0008] (1) Regarding the slow infiltration of the recharge water body: During the recharge period, the evaporation intensity of the soil body increases during the infiltration process of the recharge water body, and the ability of the recharge water body to carry the salt ions in the surface soil to move downward is insufficient, resulting in "water Therefore, the concentration of salt ions in the topsoil cannot reach a lower standard in a short period of time; and during the non-recharge period, the rise in the groundwater level due to water storage in the reservoir will cause the evaporation intensity of the topsoil to be higher than that before the reservoir was built. level, slowly increasing the concentration of salt ions in the topsoil over a long period of time, leading to salinization of the topsoil;
[0009] (2) About the recharge water body not in direct contact with the soil: when the recharge water body is not in direct contact with the soil body, the recharge water body has no salt washing effect, and there is no effective control effect on the salinization of the surface soil caused by shallow buried underground reservoirs
[0014] The above three types of soil salinization prevention and control technologies not only need to increase the cost of treatment on the basis of underground reservoir engineering construction, but also have the risk of causing environmental pollution, and most of them can only achieve short-term treatment
[0015] At present, there are few studies on the possibility of surface soil salinization caused by shallow buried underground reservoirs. A systematic solution for long-term effective prevention and control

Method used

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  • Method and ancillary facility for preventing and treating salinization of surface soil of underground reservoirs
  • Method and ancillary facility for preventing and treating salinization of surface soil of underground reservoirs
  • Method and ancillary facility for preventing and treating salinization of surface soil of underground reservoirs

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Embodiment Construction

[0048] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0049] Part 1: Experimental setup for determining optimal recharge schemes for groundwater reservoirs

[0050] refer to figure 1, a test device for determining the optimal recharge scheme of an underground reservoir, and its structure includes: an outer cylinder 1, a chassis 2, an orifice plate 3, an inner cylinder 4, a rubber plug 5, an air extraction pipe 6 and an air extraction pump 8.

[0051] 1. Outer cylinder

[0052] refer to figure 1 , the outer cylinder 1 is made of plexiglass, with an outer diameter of 300mm, a wall thickness of 10mm, and a cylinder length of 1200mm. There is a drain hole 20mm from the bottom, and a drain pipe 7 is installed at the drain hole. The outer diameter of the drain pipe 7 is 25mm. The thickness is 3mm, and it is sealed and connected with the drain hole. The drain pipe 7 is used to discharge excess w...

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Abstract

The present invention discloses a method and ancillary facility for preventing and treating salinization of surface soil of underground reservoirs. The ancillary facility comprises an outer cylinder,a bottom plate, a hole plate, an inner cylinder, a rubber plug, an exhaust pipe and an exhaust pump, the bottom plate is hermetically connected with a bottom part of the outer cylinder, the hole plateis arranged above the bottom plate, parallel to the bottom plate and fixedly connected with an inner wall of the outer cylinder, a side wall of the inner cylinder is perforated, a bottom part of theinner cylinder is fixed on the hole plate, a top part of the inner cylinder is plugged with the rubber plug, the exhaust pipe is connected with the exhaust pump together, and the other end of the exhaust pipe penetrates through the rubber plug and extends into the inner cylinder. The preventing and treating method comprises the following steps: (1) simulating underground reservoirs by using the ancillary facility; (2) designing and carrying out a control variable test; (3) determining an optimal recharge scheme of the underground reservoirs; and (4) conducting field construction. Beneficial effects are as follows: the preventing and treating method can realize long-term effective preventing and treating, is low in preventing and treating cost and does not have a risk of environmental pollution; and the ancillary facility is simple in structure, simple and convenient in operation and closely combined with actual engineering.

Description

technical field [0001] The invention relates to a method for preventing and controlling surface soil salinization of an underground reservoir and supporting facilities, belonging to the technical field of underground reservoir engineering. Background technique [0002] As a scientific and reasonable underground water conservancy project with economical, environmental and ecological benefits—the underground reservoir and its related technologies are constantly developing and have achieved a series of achievements. Such projects have played an increasingly important role in rationally regulating surface water and groundwater, realizing direct and rapid connection between surface water and groundwater, and thus achieving a balance in the uniformity of temporal and spatial distribution of water resources. The construction and operation of underground reservoirs will lead to the rise of the groundwater level. For underground reservoirs with shallow buried depths limited by geolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B77/00A01B79/00G06F30/20G06Q50/02
CPCA01B77/00A01B79/00G06Q50/02
Inventor 吴春璐刘晓丽王恩志孙欢陈阳
Owner TSINGHUA UNIV
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