简介:文章概略介绍了地面沉降监测标孔的结构及保护管、标杆、扶正器、标底的选择原则,详细介绍了各类标孔的施工技术、质量保证措施.
简介:The“9thInternationalSymposiumontheOrdovicianSystem,7thInternationalGraptoliteConference&FieldMeetingoftheInternationalSubcommissiononSilurianStratigraphy”commencedonAugust12,2003,byreceivinginSanJuanCitytoallparticipantsofthepre-symposiafieldtripthroughthePrecordilleraofMendozaandSanJuanprovinces,westernArgentina.OnAugust13,thefieldtripbeganwiththepurposetoshowsignificantLowerPaleozoicoutcropsfromdiversesettingsofthePrecordillerageologicalprovince.ThisfivedaysexcursionwasledbyDrs.S.H.Peralta.