GPRS通信在水文自动测报系统中的应用.pdf水情自动测报系统是20世纪80年代发展起来的，系统建设

文件名称: GPRS通信在水文自动测报系统中的应用.pdf

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详细说明：水情自动测报系统是20世纪80年代发展起来的，系统建设初期，通信大多以超短波为主，对测报系统而言，一般需建设一个或多个中继站来实现系统的通信，系统建设和运行维护费用较大。随着移动通信技术的快速发展，特别是GPRS通信的普及，使水情自动测报技术得到极大的提高。以辽宁省中小河流水文监测系统为例，介绍了水文自动测报系统的组成、通信方式、技术优势、主要功能等。实践证明，GPRS信道作为水情自动测报系统的通信媒介具有良好的发展前景。第22期张会远,等:偏压碰道涧口段预加固措施选取方法分析 55 工取得了良好的效果。 risk management of grouting agents used during construction of the Ro merisksporten tunnel[ J]. Tunneling and Underground Space Technol 5结论 ogy,2000,15(4):169-178 [3]杨小礼,李亮,刘宝琛,偏压隧道结构稳定性评价的信息优化分析通过对28座偏压隧道洞凵资料的统计,以及刈现 [J].岩石力学与工程学报,2002,21(4):484-488 有研究成果的大量研究,可得如下结论 [4 LIU Wenbin, 1.IU Baoguo, WANG Weifeng. Pipe Shleld Effect Analy (1)将影响偏压隧道洞口的影响因素分为I、Ⅱ sis of double-arched tunnel under unsymmetrical pressures[ J]. cI 类。I类是浅埋、围岩级别差和仰坡影响3个因素,该 nese Journal of rook Mechanics and engineering, 2007. 26( 53) 类因素是偏压洞口都需面对的。其他因素属于第Ⅱ 3704-3710 5]来弘鹏,谢交利,杨晓华.地表预注浆加固公路隧道浅埋偏压駛碎类,具体的偏压洞口工程,可能受到该类因素中一种或围岩效果分杯[冂].岩石力学与工程学报,2008,27(11):2309 几种因素的影响,也可能不受影响。 2315 (2)提岀了先治理第Ⅱ类影响因素,再加固仰坡,[6]王军东科亡遜道洞口浅埋段预加固施工技术[J中国高新技术最后治理浅埋偏压的预加固选取方法,能够有效利用企业,2010,(9):161-162 已有的研究成果。 [7]謝世宏,韩玉芳,罗永会,布陇菁隧道浅埋偏压泂口段施工技术 [J].成果与运用,2004,(3):61-63 参考文獻 [8]杨超,张永兴,黄达,等,地形偏压隧道开挖变形特征及预加固措 Ⅰ]杨超,浅变质碎裂岩地区隧道洞口段预加固技术研究[D].重庆施[J].公路文通科技,2012,29(7):97-103. 重庆大学,2011 编辑:徐诗银 [2] Vike A, Sverdrup L, Kelley A, et al. Experiences fruIn environmental Analysis on selection of pre-reinforced measures for portal section of unsymmetrically loaded tunnel ZHANG Huiyuan, WANG Lianjun Department of Traffic Engineering, Henan University of Urban Construction, Pingdingshan 467036, China) Abstract: To select reasonable pre-reinforced measures for portal section of tunnel, the data of 28 un-symmetrically loaded tunnel portals are collected and sorted out. The factors that can influence construction safety of unsymmetrically loaded tunnel are classified into two types and a pre -reinforced order is put forward based on a great deal of research on the existing study, namely first controlling the factors of type II, then reinforcing the slope, and finally controlling the factors of shallow buried and unsym metrical loadings. The new approach correctness was verified by its application in pre-reinforcement of right portal section of a tunnel. All the obtained conclusions can be guidance for the design and construction of similar tunnels Key words: shallow and unsy metrical loadings; portal section; pre-reinforcement; tunnel project 22020《2《2《0《30200《(》》0004》≯化》20】》》3》》》P0》方上接第35页 Application of GPRS communication in automatic hydrologic data acquisition system LIU Zewen, WANG Yanle, HUA Xiaojun, han Youpin Hydrology Bureau, Changjiang Water Resources Commission, Wuhan 430010, China Abstract: The automatic hydrologic data acquisition system was developed in 1980s. In the initial construction period of the system, the majOr communication medium is ultrashort wave, for the data acquisition system, one or multiple relay stations nee ded to be constructed for communication, resulting in high operation and maintenance cost. Along with quick development of mo bile communication technology and the popularization of GSM, especially GPRS communication, the technology of automatic hydrologic data acquisition system is improved greatly. Taking the automatic hydrologic data acquisition system for middle and small rivers in Liaoning Province as example, this paper introduces the composition, communication mode, technological advan tages and main functions etc. of the system. The practice shows that utilizing GPRS as the communication medium of automatic hydrologic data acquisition system has good development prospects. Key words: GPRS communication; GPRS nctwork; hydrologic data automatic acquisition system; system development

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