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浅谈GPS RTK技术在工程测量中的应用 总被引:2,自引:13,他引:2
阐述了GPS的构成,介绍了GPS RTK的定位原理及其两种测量模式,分析了GPS系统在工程测量中的应用,指出GPS RTK系统在工程测量应用中有精度高、速度快等特点,旨在推广GPS RTK技术在工程测量中的应用。 相似文献
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近年来随着我国基础设施建设的飞速发展,建设大跨度桥梁与隧道贯通工程也发展很快。采用GPS静态相对定位技术建立桥梁与隧道施工控制网,既能满足工程精度要求,又能提高工效、满足工程进度要求。因此GPS定位技术在桥梁与隧道控制测量中已获得广泛的应用。本文主要介绍了GPS在南水北调隧道控制测量中控制网的布设、施测以及平差和精度统计。 相似文献
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结合工程应用,简要论述了GPS基准站网监测系绕(CORS)技术在地形测量中的应用方法,比较了两种动态定位技术测量的不同,提出了如何加强精度、提高工作效率的应对措施,并对数据结果进行分析. 相似文献
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结合明珠湾大桥工程项目,以及GPS测量技术相关定义,对工程测量中GPS测量的常用方法进行简要分析,同时详细分析了工程测量中的GPS测量技术的应用要点。研究结果表明,工程测量中GPS技术的应用优势非常明显,可准确、高效地获取工程测量数据,保障工程测量数据值的精度。 相似文献
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针对GPS技术已经广泛应用于我国工程测量技术领域的现状,本论文主要对GPS工程测量技术要点进行了分析研究,首先简单分析了GPS工程测量的特点,在此基础上重点探讨了GPS工程测量的技术要点,从测量精度、误差处理技术方面探讨了GPS工程测量技术的应用要点,对于进一步提高GPS的工程测量技术水平和应用水平具有一定借鉴意义。 相似文献
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本文从房产测绘出发,重点介绍GPS测量技术在房产平面控制测量中的应用实验过程,论述了采用GPS定位技术建立房产测量平面控制网的原则、方法、精度可靠性及技术可行性. 相似文献
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结合目前高速公路施工项目招投标活动的实际情况,阐述了最低评标价法的概念,归纳了其优点及存在问题,对完善最低评标价法提出几点策略,以期促进招标投标市场更加规范有序。 相似文献
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This article analyses state-led place-making practices in Melbourne. The two levels of government that influence planning in Melbourne make much of the city as ‘culturally vibrant’ and ‘creative’, and have incorporated creative city-inspired place-making principles into many layers of the planning system. An examination of the development of two mixed-use megaprojects in central Melbourne reveals however that ideals of culturally engaging public places, and indeed of creative landscapes for middle-class consumption, wither in the face of more basic imperatives for economic development. In these case studies the ‘creative city’, no matter how the idea is interpreted, has little traction either as a set of inclusive place-making principles or as a gentrification strategy. The article concludes that the creative city-inspired place-making objectives in the planning system at both state and local levels are ambiguous in their overall intents and completely unsupported by statutory controls. Such place-making objectives as are realised are the compromised results of the interplay of uncoordinated decisions, delivered at the pleasure of the developer. 相似文献
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Vo Thi Yen-Phi Andrea Rechenburg Joachim Clemens 《The Science of the total environment》2010,408(9):2050-2053
Septage is widely acknowledged as a major source of infectious pathogens while disposal of septage, and the operation and maintenance of septic tanks, is not regulated in many developing countries. Twenty untreated septage and septage sludge samples were taken from Can Tho City, Vietnam to examine their pathogen content, and indicator micro-organisms. Escherichia coli and Enterococcus spp. were detected in all samples, regardless of sludge storage time. Phages were detected in 80% of samples. Salmonella spp. were detected in 70% of the untreated septage and 60% of septage sludge samples. Concentrations of phages and bacteria tested in septage sludge after many years of tank storage were much higher than the expected levels. Helminth ova were present in 95% of untreated septage samples with an average of 450 ova l− 1, and were detected in all septage sludge samples with an average of 16,000 ova l− 1. Twelve varieties of helminth ova were identified. More helminth ova varieties in higher concentrations were found in septage than those reported from stool samples. The varieties' frequency ranged from 10% to 50% and Ascaris lumbricoides predominated. Results show that pathogens and indicator micro-organisms, especially helminth ova, accumulate in sludge. Thus helminth ova should be considered when septage sludge is treated and used for agriculture. Proper health protection measures must be applied for people handling septage. 相似文献
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新时期广东城市化的新特点 总被引:4,自引:0,他引:4
新时期广东城市化出现以下特点:知识源导向、城市由单体向群体化发展、产业集群推动、政府主导自上而下的集约化发展、城镇化向城市化转变、由重“数量”发展向重“质量”发展的转变。 相似文献
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浅谈我国工程项目建设成本控制存在的问题 总被引:2,自引:0,他引:2
结合目前我国施工企业工程项目成本管理现状,对工程项目成本管理过程中存在的问题进行了较详细的分析,并提出了一些解决问题的办法,以做好项目成本控制工作,进而增强企业经济实力。 相似文献
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针对由于建筑施工临时用电安全管理的不完善和不规范操作而导致大量工伤事故频频发生的问题,为消除用电安全隐患,对建筑施工临时用电安全管理进行了归纳和分析,并提出了整改意见,以确保现场人员及电气设备的安全运行。 相似文献
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安康市工程施工企业未来几年人才需求调查 总被引:1,自引:0,他引:1
为了不断提高工程类专业的办学质量,对安康市区主要施工企业或项目经理部未来几年人才需求状况进行了调查,同时提出相关建议,以期培养更多的该类专业人才,满足施工企业需求。 相似文献
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吐鲁番农村住宅冬季室内热舒适调查研究 总被引:1,自引:0,他引:1
对吐鲁番57户农村住宅中108名居民的热感觉、热舒适等进行了主观问卷调查,测试了温度、相对湿度等室内外环境参数,运用统计学分析方法对测试与调查结果进行了回归分析。结果表明,吐鲁番农村住宅冬季实测的热中性温度为19.3℃,预测热中性温度为21.2℃;通过两种计算方法获得的热期望温度分别为19.7℃和19.6℃;80%居民可接受的温度范围为15.2~27.4℃。由于受干热干冷的地域气候影响,冬季可接受的最低温度范围明显高于其他地区的农村住宅。 相似文献