江苏省重力控制网点位选取研究
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摘要
本文阐述了江苏省测绘系统开展重力测量的背景和意义,提出了符合江苏实际的各级重力点选点原则。各级重力点的选取,首先符合国家现行规范的要求,在此基础上,顾及大地基准、高程基准、重力基准"三网合一"的需要,所选点位均为各类已有高等级控制点。根据测区区位、地貌和已有资源等实际,提出了优先选用配有重力观测墩的CORS站点、省内典型沉降区适当布点、联测地震监测网部分点位、特殊地形要素地区适当布点等原则,完成了江苏省重力基准点、基本网、加密网三级控制点布设方案。研究结果可以给其他省份布设重力控制网提供依据。
In this paper,we expound the background and significance of gravity measurement in Jiangsu Surveying and Mapping System,then put forward the principle correspond to reality in Jiangsu province to select gravity points at all levels.The selection of gravity points at all levels initially conforms to the requirements of the current specifications.On this basis,we take the needs to merge geodetic datum,elevation datum and gravity datum in one into account.The selected points are all kinds of existing high-level control points.Station select principles,such as give priority to use CORS stations equipped with gravity observation pillar,properly select gravity points in provincial typical subsidence area and special topographic feature area,connect some provincial seismological monitoring network stations were presented based on the reality of location,landform and existing resources in surveying areas.Also we complete three levels control point designing of absolute gravity points,gravity network,densification network in Jiangsu province.The results can provide a basis for the establishment of gravity control network in other provinces.
In this paper,we expound the background and significance of gravity measurement in Jiangsu Surveying and Mapping System,then put forward the principle correspond to reality in Jiangsu province to select gravity points at all levels.The selection of gravity points at all levels initially conforms to the requirements of the current specifications.On this basis,we take the needs to merge geodetic datum,elevation datum and gravity datum in one into account.The selected points are all kinds of existing high-level control points.Station select principles,such as give priority to use CORS stations equipped with gravity observation pillar,properly select gravity points in provincial typical subsidence area and special topographic feature area,connect some provincial seismological monitoring network stations were presented based on the reality of location,landform and existing resources in surveying areas.Also we complete three levels control point designing of absolute gravity points,gravity network,densification network in Jiangsu province.The results can provide a basis for the establishment of gravity control network in other provinces.
引文
[1]许厚泽、陆仲连.中国地球重力场与大地水准面.北京:解放军出版社,1997.
[2]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.GB/T 20256-2006,国家重力控制测量规范[S].北京:中国标准出版社,2006.
[3]中华人民共和国国家质量监督检验检疫总局.GB/T17944-2000,加密重力测量规范[S].北京:中国标准出版社,2004.
[4]佟洞,李昱春,宋玉兵.江苏省陆海统一测绘基准的建设探讨[J].现代测绘,2017,40(4):49-52.
[5]胡喜梅,马传明,邓波,等.江苏省沿海地区地面沉降风险评价[J].地质科技情报,2017,36(2):222-228.
[6]姜德才,张继贤,张永红,等.百年煤城地表沉降融合PS/SBAS InSAR监测——以徐州市为例[J].测绘通报,2017(1):58-64.
[7]张落成,陈振光,吴楚材.苏南太湖流域地下水过度开采引起的地面沉降及其防治对策[J].湖泊科学,2003,15(3):257-262.
[8]国家测绘局.CH/T 2003-1999国家一等重力测量规范[S],2006.
[2]中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.GB/T 20256-2006,国家重力控制测量规范[S].北京:中国标准出版社,2006.
[3]中华人民共和国国家质量监督检验检疫总局.GB/T17944-2000,加密重力测量规范[S].北京:中国标准出版社,2004.
[4]佟洞,李昱春,宋玉兵.江苏省陆海统一测绘基准的建设探讨[J].现代测绘,2017,40(4):49-52.
[5]胡喜梅,马传明,邓波,等.江苏省沿海地区地面沉降风险评价[J].地质科技情报,2017,36(2):222-228.
[6]姜德才,张继贤,张永红,等.百年煤城地表沉降融合PS/SBAS InSAR监测——以徐州市为例[J].测绘通报,2017(1):58-64.
[7]张落成,陈振光,吴楚材.苏南太湖流域地下水过度开采引起的地面沉降及其防治对策[J].湖泊科学,2003,15(3):257-262.
[8]国家测绘局.CH/T 2003-1999国家一等重力测量规范[S],2006.