| 全站仪和激光投点仪放样钢管柱精度浅析 |
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| 引用本文： | 张能,景兆骥,康晋明.全站仪和激光投点仪放样钢管柱精度浅析[J].北京测绘,2014(1):63-65. |
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| 作者姓名： | 张能 景兆骥 康晋明 |
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| 作者单位： | 中建交通建设集团有限公司,北京,100071;中建交通建设集团有限公司,北京,100071;中建交通建设集团有限公司,北京,100071 |
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| 摘 要： | 在地铁车站盖挖逆筑法施工中,钢管柱作为重要结构之一,具有定位精度要求高、施工操作难度大的特点1]。本文从测量仪器和放样方法的误差来源入手,结合误差传播理论2],对钢管柱平面放样精度公式进行推导,从而分析钢管柱平面位置定位精度是否满足相关要求,指导工程施工。
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| 关 键 词： | 全站仪 激光投点仪 放样 钢管柱 点位误差 |
System Design for Urban Drinking Water Quality Monitoring and Evaluation Based on WebGIS |
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| Institution: | SUN Yu, HU Xiao-xia, ZHAO Dong,SHEN Ti-zhuang (School of Geosciences,Yangtze University. Wuhan, Hubei 430100,China) |
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| Abstract: | The acceleration of industrialization which is a serious threat to the safety of drinking water. Taking water as its core standards, it is important to strengthen the monitoring and evaluation of water quality of drinking water for ensuring drinking water safety. Taking the sources of drinking water for the city as the target, the monitoring and evaluation of water quality system based on WebGIS was established based on the singlefactor evaluation method and synthetical evaluation method of water quality identification index evaluation model by using the spatial characteristics of GIS technologies. It provided technical support and data basis for water resource information management and water supply safety of the city. |
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| Keywords: | WebGIS Flex WebService RIA water quality assessment |
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