深水条件下雷管的环境适应性研究

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LI Hongqi，LI Qijia， ZOU Yongsheng Changjiang Chongqing Waterway Engineering Bureau （Chongqing， ）

[ABSTRACT]In the waterwayconstruction project，theconstruction focus ison thecomprehensive regulationof theobstructed section.At present，underwaterdrilingand blastinghas become the most eficientapproach for waterwayregulation.During underwaterdriling and blasting，the influenceof water depth should beconsidered firstto determine the suitable explosives and blasting equipment forthe project，ensuring the blasting outcomes.Based onthe waterway regulation project of the Liantuo section between Three Gorges Damand Gezhouba Dam，the environmental adaptabilityof detonatorsunder dep water conditions was studied，with aspecific focus on the impact of water depth onthe performanceof detonators.Theresults indicate thathigh-precision plastic nonel detonators anddigital detonators arerecommended forunderwaterdrilingand blasting construction whenthewaterdepth is O-4O meters.Detonatorsshould beselectedaccording to the actual situationof the project.When thewaterdepth is 5O metersor more，itisrecommended touse digital detonators. Becauseunder high presureand prolonged immersion conditions，theperformance degradationof digital detonators isrelatively small.

[KEYWORDS]deep water condition； underwater driling blasting；performance of detonator

0 引言

三峡-葛洲坝两坝间莲沱段航道整治工程位于湖北省宜昌市夷陵区三峡枢纽和葛洲坝枢纽之间，全长约 6.5km ，按内河I级航道标准建设。（剩余5075字）