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Covering layer structure for near-surface disposal site and radioactive solid waste disposal system

A disposal site, near-surface technology, applied in radioactive purification, waterway systems, sewer systems, etc., can solve problems affecting the containment and isolation capabilities of near-surface disposal sites, hidden dangers of covering layer, etc., to protect long-term integrity, The effect of shortening maintenance time and reducing maintenance costs

Pending Publication Date: 2022-07-12
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Up to now, there is no complete design plan for the covering layer of the near-surface disposal site in my country, and as the near-surface disposal site in China gradually reaches the closing condition, it is necessary to carry out work such as the design and construction of the covering layer, and the quality of the covering layer is directly related to Affect the containment and isolation capabilities of the near-surface disposal site. If not properly designed, the overburden will become a major safety hazard for the near-surface disposal site

Method used

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  • Covering layer structure for near-surface disposal site and radioactive solid waste disposal system
  • Covering layer structure for near-surface disposal site and radioactive solid waste disposal system
  • Covering layer structure for near-surface disposal site and radioactive solid waste disposal system

Examples

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Embodiment 1

[0040] like figure 1 , 2 As shown, the present embodiment discloses a covering layer structure for a near-surface disposal site, which includes an anti-seepage layer, the anti-seepage layer is arranged on the surface of the near-surface disposal site, and the upper surface of the anti-seepage layer is zigzag, so as to A plurality of drainage ditches 10 are formed on the upper surfaces of the impermeable layer and the cover layer.

[0041] Specifically, the near-surface disposal site in this embodiment refers to a disposal site of low-to-medium-level radioactive solid waste, especially a disposal site of low-to-medium-level radioactive solid waste in a humid area. In addition to the zigzag shape on the upper surface of the anti-seepage layer, the lower surface of the anti-seepage layer can also be zigzag, that is, the cross-section of the overall structure of the anti-seepage layer is in a zigzag shape. Before arranging the covering layer structure, the top of the near-surfac...

Embodiment 2

[0067] The present embodiment discloses a radioactive solid waste disposal system, including a near-surface disposal site for disposing low-to-medium-level radioactive solid waste, and the covering layer structure described in Embodiment 1 for the near-surface disposal site.

[0068] Specifically, as image 3 As shown, the depressions of the impermeable layer and the entire cover structure are opposite to the gaps between the various disposal units 15 in the near-surface disposal site, which ensures that even when the impermeability of the entire cover fails, most of the The water flows down through the gaps between the various disposal units, so that water can be prevented from entering each disposal unit 15 as much as possible. Also, the top plate 16 of each disposal unit 15 is preferably arranged in a triangle shape, which ensures that even when there is water flow on the top plate 16 of the disposal unit 15, the water flow can flow out to the gaps on both sides of the disp...

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Abstract

The invention discloses a covering layer structure for a near-surface disposal site, which comprises an impermeable layer, the impermeable layer is arranged on the surface of the near-surface disposal site, and the upper surface of the impermeable layer is zigzag, so that a plurality of drainage ditches are formed on the upper surface of the impermeable layer. The invention further discloses a radioactive solid waste disposal system. According to the invention, effective protection can be provided for the near-surface disposal site, and water is prevented from leaking into disposal units of the near-surface disposal site.

Description

technical field [0001] The invention belongs to the technical field of radioactive waste treatment, and in particular relates to a covering layer structure for a near-surface disposal site and a radioactive solid waste disposal system. Background technique [0002] Radioactive waste disposal refers to the final placement of radioactive solid waste in specially constructed facilities, which is an indispensable link in the complete nuclear industry chain. Near-surface disposal sites have the advantages of reasonable engineering cost, convenient construction, and better safety. At present, the disposal sites for low and medium radioactive solid waste generated from the operation and decommissioning of nuclear facilities in my country are all near-surface disposal sites, such as Northwest Gansu Disposal Site, Gansu Longhe Disposal Site, Sichuan Feifengshan Disposal Site, and Guangdong Beilong Disposal Site disposal field. [0003] The cover layer is one of the most important en...

Claims

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Application Information

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IPC IPC(8): E02D31/00E03F3/04G21F9/34
CPCE02D31/00E02D31/004E03F3/046G21F9/34Y02A30/60
Inventor 夏加国王旭宏吕涛李星宇刘兴伟李昶李昱茜康宝伟王馨
Owner CHINA NUCLEAR POWER ENG CO LTD
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