现代测绘
現代測繪
현대측회
MODECN SUIVEYING AND MAPPING
2012年
5期
17-21
,共5页
姜晨光%段永强%刘祥勇%董勤景%路奎%张胜忠%王霞
薑晨光%段永彊%劉祥勇%董勤景%路奎%張勝忠%王霞
강신광%단영강%류상용%동근경%로규%장성충%왕하
工程测量%地铁测量%安全监测%准动态监测%软土地区%GPS%空基基准
工程測量%地鐵測量%安全鑑測%準動態鑑測%軟土地區%GPS%空基基準
공정측량%지철측량%안전감측%준동태감측%연토지구%GPS%공기기준
engineering survey%subway survey%safety monitoring%nearly dynamic monitoring%soft soil region%global positioning system%space datum
鉴于软土地区土性的极端复杂和地面沉降严重的普遍特征，提出了“空（天空）～地（地面）～地（地下）”一体化的全方位准动态地铁施工安全监测思想，构建起了相应的技术体系（即全方位准动态集成技术）。软土地区地铁施工安全监测全方位准动态集成技术的核心是借助GPS技术建立三维的空基变形监测基准（用于地表变形监测和地下变形监测。该空基变形监测基准可以克服传统陆基基准因软土地区地面沉降而对变形监测数据产生的系统性偏差，还可实现地铁施工变形监测的全天候、实时化与动态化），以城市基础地质资料库作为安全监测整体性设计的依据（提高了地铁施工安全监测的针对性、可靠性与有效性），以准实时、准动态的地下结构应力应变监测结果作为施工安全性的重要判别要素，以准实时、准动态的地面变形监测结果作为地铁施工作用下城市环境安全性的关键判别要素，实现对地铁施工安全的全方位、实时化、准动态控制。
鑒于軟土地區土性的極耑複雜和地麵沉降嚴重的普遍特徵，提齣瞭“空（天空）～地（地麵）～地（地下）”一體化的全方位準動態地鐵施工安全鑑測思想，構建起瞭相應的技術體繫（即全方位準動態集成技術）。軟土地區地鐵施工安全鑑測全方位準動態集成技術的覈心是藉助GPS技術建立三維的空基變形鑑測基準（用于地錶變形鑑測和地下變形鑑測。該空基變形鑑測基準可以剋服傳統陸基基準因軟土地區地麵沉降而對變形鑑測數據產生的繫統性偏差，還可實現地鐵施工變形鑑測的全天候、實時化與動態化），以城市基礎地質資料庫作為安全鑑測整體性設計的依據（提高瞭地鐵施工安全鑑測的針對性、可靠性與有效性），以準實時、準動態的地下結構應力應變鑑測結果作為施工安全性的重要判彆要素，以準實時、準動態的地麵變形鑑測結果作為地鐵施工作用下城市環境安全性的關鍵判彆要素，實現對地鐵施工安全的全方位、實時化、準動態控製。
감우연토지구토성적겁단복잡화지면침강엄중적보편특정，제출료“공（천공）～지（지면）～지（지하）”일체화적전방위준동태지철시공안전감측사상，구건기료상응적기술체계（즉전방위준동태집성기술）。연토지구지철시공안전감측전방위준동태집성기술적핵심시차조GPS기술건립삼유적공기변형감측기준（용우지표변형감측화지하변형감측。해공기변형감측기준가이극복전통륙기기준인연토지구지면침강이대변형감측수거산생적계통성편차，환가실현지철시공변형감측적전천후、실시화여동태화），이성시기출지질자료고작위안전감측정체성설계적의거（제고료지철시공안전감측적침대성、가고성여유효성），이준실시、준동태적지하결구응력응변감측결과작위시공안전성적중요판별요소，이준실시、준동태적지면변형감측결과작위지철시공작용하성시배경안전성적관건판별요소，실현대지철시공안전적전방위、실시화、준동태공제。
In view of common characteristic of local extremely complicated and serious ground subsidence in soft soil area, SGU technology (space-ground-underground comprehensive integration nearly dynamic monitoring technology for subway construction security) was put forward, and technology system of SGU has been constructed. The core of SGU is a three- dimensional space benchmarks of deformation monitoring by GPS technology (used for surface deformation monitoring and underground deformation monitoring. It can overcome systematic deviation of deformation monitoring data of traditional land- based benchmark by caused of ground settlement in soft soil area. It still can realize round-the-clock, real-time change and dynamic deformation monitoring of subway construction) . Integral design of safety monitoring of SGU is based on city basic geological database(it improved the pertinence, reliability and validity of subway construction safety monitoring). Important discriminant factor of construction safety of SGU is nearly real-time and nearly dynamic monitoring results of stress and strain of underground structure. Key discriminant factor of urban environmental security of SGU is nearly real-time and nearly dynamic monitoring results of ground deformation under the function of subway construction. SGU can achieve the all-round, real-time operation, nearly dynamic control for safety of subway construction.
