Uranium-exceeding tunnel water treatment process

A tunnel and process technology is applied in the field of uranium excess tunnel water treatment technology to achieve the effects of simple construction and excellent economy.

Pending Publication Date: 2021-10-22
中陕核工业集团二一八大队有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a treatment process for uranium exceeding the standard tunnel water, by setting a certain me

Method used

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  • Uranium-exceeding tunnel water treatment process

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] see Figure 1-5 , an embodiment provided by the present invention: a treatment process for uranium-excessive tunnel water, the process includes the following steps:

[0026] The first step is to drill a hole in the surrounding rock of the water gushing in the tunnel, and then inject grout into the drilled hole to block the water-containing cracks in the surrounding rock of the water gushing;

[0027] In the second step, after the grouting cement is sol...

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Abstract

The invention discloses a uranium-exceeding tunnel water treatment process. The uranium-exceeding tunnel water treatment process comprises the following steps that holes are drilled in tunnel water gushing surrounding rock and water-containing cracks are plugged by cement paste; hanging net concrete spraying protection is carried out on the surface of the water gushing surrounding rock; hanging concrete spraying protection is carried out on the surface of the water gushing surrounding rock; and the interior of a tunnel (transverse drift) is filled with humus soil, sodium sulfide and barium chloride, and a pit opening (transverse drift opening) is sealed with a concrete wall embedded into the surrounding rock. The uranium-exceeding tunnel water treatment process is simple in construction, firstly, cracks of the water gushing surrounding rock are plugged, then the surrounding rock is reinforced through a steel wire mesh and the concrete, then the surrounding rock is reinforced again through the composite waterproof cloth and the concrete, so that the occurrence of cracks of the tunnel surrounding rock is greatly reduced, even if the tunnel surrounding rock generates tiny cracks again, the composite waterproof cloth further ensures that tunnel water cannot penetrate through cracks to enter underground water, the discovering situation that the tunnel water of the closed-pit uranium mine flows out of the cracks is greatly reduced, humus soil, sodium sulfide and barium chloride are adopted for filling, the target of one-time standard treatment is achieved, and the economical efficiency is superior to that of an adsorption process and a precipitation process.

Description

technical field [0001] The invention relates to the technical field of tunnel treatment, in particular to a treatment process for tunnel water with excess uranium. Background technique [0002] Exploration or development projects of uranium or radioactive element associated deposits, because the exploration project disturbs the natural circulation system of groundwater and the geochemical environment. The concentration of natural uranium at the wastewater outlet exceeds the discharge standard of 300 μg / l in the Regulations on Radiation Protection and Environmental Protection of Uranium Mining and Metallurgy (GB2327-2020). According to the requirements of green geological exploration and mine construction regulations, such environmental problems must be treated. [0003] The treatment of water with uranium exceeding the standard has always been a difficult problem in the treatment of radiation environment. For hard rock uranium mines, uranium exceeding the standard water is ...

Claims

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Application Information

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IPC IPC(8): E21F16/00E21B33/13E21D11/38E21D11/10
CPCE21F16/00E21B33/13E21D11/38E21D11/10
Inventor 冯张生刘小兵张航飞杨永兴
Owner 中陕核工业集团二一八大队有限公司
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