西北高原地区选矿厂土建工程施工技术

打开文本图片集

中图分类号：TU753 文献标志码：B 文章编号：1004-4345（2025）02-0048-04

Construction Technology for Civil Works of Concentrator in the Northwest Plateau Region

HU Luobao

（China NerinEngineering Co.，Ltd.，Nanchang，Jiangxi 33Oo38，China）

AbstractTheNorthwest plateauregion facessevere challenges incivil worksdue to extremeclimate，complexgeological conditions，andhighlycorosivesalinealkalisoilenvironment，suchascoldtemperatureandoxygendeficiencyfrostdamageand insuficientfoundationbearingcapacityTakinganickel-cobaltconcentratorinQinghaiasanexample，thispapersystematically introducestheeyechologiesofcivilonstructioninplateauenvioments，includingfoudationtreatment，onstructiooficlied shaft in ore belt conveying，deep foundation pit support for primary crushing plant，optimization of anti corrosion concrete proportion， andmakesspecialanalysisonthetemperaturecontrolandcrack preventionofargevolumeconcreteand winterconcreteconsruction technology. Practice has shown that the temperature of casting concrete can be no less than 10‰ and the solid strength compliance rateis 100% byusing replacementand dynamiccompaction technology to improve the bearing capacityof the foundation，and combining blasting method withadvanced pipeshedsupporttocompletecomplexrock inclined shaft construction，establishinga layeredsupportsystemfordepfoundationpits，addingantifreeeadditivesandhigh-eficiencywatereducingagent，andusingshed heat insulation （shed temperature of ⩾5°C ）and dynamic temperature control measures.Large volume concrete can achieve a positioning error of ⩽3 mm for embedded parts by using distributed temperature measurement and continuous 36 hour layered pouring process.

Keywordsconcentrator;plateaualpine;foundationtreatment;concretecuring;winterconstructiontechnology;massconcrete

我国西北高原地区具有高寒缺氧、地质构造复杂、强紫外线辐射及生态环境脆弱等特征，对当地工业建筑的全寿命周期性能形成了多维挑战。（剩余6762字）