A construction method for a stratum adjacent to a horizontal foundation surface of a nuclear island

By optimizing the combination of standard blasting funnels and hole spacing, the problems of high cost, irreversible damage, and safety hazards in the construction of the rock strata of the horizontal foundation surface of the nuclear island were solved, achieving efficient and safe construction results.

CN118209015BActive Publication Date: 2026-08-25CHINA NUCLEAR HUAXING MECHANIZATION ENG CO LTD +1
2 Cites 0 Cited by

Patent Information

Application Number
CN202410538274.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-04-30
Publication Date
2026-08-25
Estimated Expiration
2044-04-30

AI Technical Summary

Technical Problem

Existing methods for constructing horizontal foundation surfaces in nuclear islands suffer from problems such as high construction costs, cumbersome construction processes, irreversible damage to the rock strata, low construction efficiency, significant safety hazards, and complex environments. Furthermore, they lack attention to the relationship between the spacing of blasting holes and the blasting funnel.

Method used

Using a standard blasting funnel combination, the funnel radius was determined through experimental blasting, the blasting funnel combination was optimized, the hole spacing was calculated, the ground shape and volume after blasting were analyzed, the non-blasting construction thickness was selected, the risk of flying rocks from blasting was reduced, and the foundation surface of the nuclear island was protected.

Benefits of technology

It improved construction efficiency, reduced construction costs, minimized irreversible damage to the foundation surface, avoided the risk of flying rocks from blasting, ensured construction safety, and optimized construction cost prediction.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application discloses a construction method of a rock layer adjacent to a horizontal foundation plane of a nuclear island, and specifically comprises the following steps: test blasting, determination of a standard blasting crater radius; standard blasting crater optimization combination; calculation of bench blasting hole row spacing; analysis of a ground shape after bench blasting; calculation of a terrain volume after bench blasting; bench blasting crater combination with a structural group; bench blasting hole row spacing selection; selection of a non-blasting construction thickness of a protective layer; and non-blasting layer engineering quantity calculation. The application adopts standard blasting crater combination, analyzes a blasting crater circular arrangement combination rule, finds out a relationship between the blasting hole row spacing and a left terrain after blasting, analyzes advantages and disadvantages of a blasting protective layer and a non-blasting protective layer, can adapt to extreme environmental conditions of an unfavorable blasting construction, avoids a blasting fly rock risk, and can protect the nuclear island foundation plane.
Need to check novelty before this filing date? Find Prior Art