软弱岩层中的破碎系统下部矿仓施工的实践

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中图分类号：TD263 文献标志码：B 文章编号：1004-4345（2025）03-0007-04

AbstractToaddressthechallengesofconstructing large-section lowerorebins inweak rock strata-characterized byhigh technical difficulty and stringent safety requirements，an integrated construction scheme of“raise boring + drilling-blasting downward excavation/enlargement + layered concreting"was proposed and applied based on practical experience from a metal mine's crushing systemproject.Thesolutioninvolves threekeyphases：first，aguideraisewasdriledusingaraiseboring machnetoconnectwiththe lowerlevel，singasblasfreuaceanduckmoalael;sondlytopodowardargemeniadrilising withstrctlyoptizedblastparametestozeuroudngckdistubance;fiallsteelforcedocetelingisled throughsegmentwisesupportcasting.Tepracticeesultsdemonstratethatthisapproachnsuredonstructionsafetythroughpaalel operations （upper/lowerorebins）viaplanedmuckroutesadsafetyisolationmeasures，significantlyincreasedconstructiociency reducedconstruction time by15days for thelowerore bin，and acceleratedoverallcrushingsystem completion by43 days.

Keywordscrushingsystem;lowerorebin;raiseboring method;driling-blasting method;layeredcasting;weakrock strata; construction safety

溜破系统是地下矿山基建期关键工程，直接关系着整个矿山生产系统的形成I。（剩余4881字）