共查询到18条相似文献,搜索用时 154 毫秒
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对非开挖技术的应用现状进行了较为系统的阐述,分析了非开挖技术方法及其优缺点,针对非开挖技术在应用过程中存在的问题提出了进一步需解决的问题,以更好地发挥非开挖技术在现代城市基础设施建设中的作用。 相似文献
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《Planning》2019,(19)
介绍了非开挖检测的基本原理,细致分析了埋地管道外防腐层非开挖检测的漏电点特性,通过分析漏电点特性提出判定方法,特别是提出了如何区分牺牲阳极包和防腐层破损点的方法。 相似文献
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随着我国经济的飞速发展,城市化进程的加快,市政也在不断的加强对公用设施的建设。在以前的市政公用设施建设中所用的开挖方式往往会让马路上出现一道道的沟壕,造成交通阻塞、扬尘、泥泞等,破坏了城市的形象。非开挖技术在市政公用设施建设中不需要开挖地表面,它是利用地下的空间进行安装施工的,既充分的利用了地下空间,又有效的节省的地面的空间,不会给城市环境造成破坏。因此利用非开挖技术进行市政公用设施建设是一个很好的选择。本文介绍了什么是非开挖技术,分析了非开挖技术的优点,提出了非开挖技术在工程施工中的问题和这些问题的解决措施,最后探讨了非开挖技术在市政公用设施建设中的具体应用。 相似文献
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对非开挖定向铺管技术的优、缺点进行了概略的分析,指出该施工方法的缺陷所在,针对性的提出了施工中的注意事项,以期完善非开挖定向铺管技术,实现预期的工程目标。 相似文献
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随着城市的建设和发展,埋地管线的种类和数量迅速增多,相应地也出现了涉及地下管线安全运行的各种腐蚀问题。因此开展埋地管道防腐层的非开挖检测非常必要。本文简要介绍了埋地管道非开挖检测常用的方法,然后具体围绕交流电流衰减法(PCM)的工作原理、检测前的准备展开讨论,并且以北京某地区的天然气埋地管道非开挖检测工作为例,介绍一则应用交流电流衰减法(PCM)进行埋地管道防腐层检测的工程实例,根据检测数据和管中电流随测量距离的变化曲线进行分析,确定了破损点的位置,并进行了开挖验证,将评价结果和开挖检测结果做了比较。之后指出了应用该法的局限性并提出相关建议。最后对未来的检测方法进行了展望。 相似文献
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介绍了非开挖施工技术的含义及应用范围,归纳了非开挖施工方法的主要方法及设备,探讨了非开挖技术的特点,对杭州市非开挖施工技术的应用进行了分析,得出了非开挖技术应用前景极为广阔的结论。 相似文献
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Essam K. Zaneldin 《Tunnelling and Underground Space Technology incorporating Trenchless Technology Research》2007,22(1):96-105
The development of trenchless methods has gained impetus in the construction industry in United Arab Emirates due to increasing amounts of investment in underground infrastructures that are new, deteriorating, or under capacity. This paper presents the results of a questionnaire survey of trenchless construction methods used by municipalities and contractors in United Arab Emirates. The survey provides an indication of current and expected future trends in the application of trenchless construction technologies including types of technologies employed and percentage of projects that employed trenchless technologies. The survey results indicate that trenchless technology is gaining increasing popularity among contractors and municipalities across United Arab Emirates. The survey results also indicate that trenchless technology is gaining increasing popularity among municipal engineers across UAE. The survey revealed current, and by extrapolation likely future growth, in utilizing trenchless construction methods and the average expenditures of municipalities in UAE for new construction and for rehabilitation. 相似文献
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Development and applications of trenchless technology in China 总被引:1,自引:0,他引:1
Baosong Ma M. Najafi 《Tunnelling and Underground Space Technology incorporating Trenchless Technology Research》2008,23(4):476-480
Trenchless technology has developed for almost 10 years in China since the first symposium on trenchless technology was held in Beijing (Peking) in 1996 and the China Society for Trenchless Technology-CSTT was established in 1998. Driven by the dramatically increased demand for underground pipeline installation throughout the nation, China has made significant progress in research and development in trenchless technology in the past 10 years. For example, there are more than 200 contractors engaged in trenchless construction, using more than 2000 horizontal directional drilling machines, among which approximately 700 have been introduced in the last year, and the biggest HDD rig in the world is now in China. In addition, China has made many achievements in education, research, and new products development and has accomplished many challenging projects in terms of complexity, diameter and distance in this field. There is a huge market potential for trenchless technology in mainland China.This paper presents the latest research, education, training, marketing and technical status of trenchless technology in China, and discusses the potential market, trends and factors that will influence trenchless technology in the next decade in China. 相似文献
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我国非开挖管线工程技术发展现状的调查报告 总被引:4,自引:0,他引:4
在对我国非开挖管线工程技术发展历程、现状调查的基础上,本文指出目前我国非开挖技术产业的雏形已初步形成,非开挖管线工程市场已从潜在市场开始向现实市场转变,具有很好的市场前景.但和国外相比,差距仍很大,且存在诸多不利于该技术产业化进程的问题有待解决. 相似文献
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非开挖技术在给水管道修复中的应用 总被引:1,自引:0,他引:1
介绍了非开挖修复技术的原理、方法、工艺及应用,并通过采用翻转内衬技术修复城市给水埋地管道的工程实例,总结了非开挖技术应用的特点、优势及前景。 相似文献
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大多数非开挖施工都存在占地面积大、运行成本高、环境污染严重等问题,特别是小尺寸( 600 mm以下)非开挖钻孔施工排泥问题对环境影响较大。笔者基于仿生学原理,通过对穿山甲开挖孔洞原理与泥屑输送方法的研究,研究设计了一种适合城市拥挤道路非开挖施工小型钻孔机器人系统。重点对非开挖钻孔系统关键泥屑气力输送技术进行研究,构建了泥屑输送动力学模型;并运用构建的理论方法,进行了举例计算。为小型非开挖钻孔机器人的实际应用奠定了理论基础。 相似文献