官地大坝浇筑过程质量监控研究与应用

发布时间：2019-03-02 21:36

【摘要】：官地水电站挡水坝为碾压混凝土坝,坝高168m,规模巨大;同时要求25个月内完成大坝的浇筑,总体工期比较紧张,施工强度大;大坝坝身还设置有泄洪表孔、泄洪中孔等,一定程度上增加了施工的复杂性。坝体浇筑过程中,温度控制要求严,再加上单个仓面面积大,极大增加了施工质量控制的难度。本文结合国内外在碾压和监控等方面及类似领域的研究进展,开展了官地水电站大坝浇筑过程质量的实时监控研究。结合官地大坝的施工特点,分析了在其浇筑过程中,影响碾压质量的主要因素。结合GPS-RTK技术的应用研究、GPRS现代通讯技术和系统集成技术的发展,提出了官地大坝浇筑过程的碾压质量实时监控的技术实现路径。结合官地大坝施工工艺和现场管理特点,建设并实施了官地大坝浇筑过程质量实时监控系统。这些研究成果填补了碾压混凝土大坝在浇筑过程中对碾压质量进行实时监控技术的空白,,从中取得了一系列成果,主要有:(1)结合官地碾压混凝土大坝的设计和施工特点,确定了官地大坝在浇筑过程中对碾压质量影响的主要因素,初步分析了他们对碾压质量的影响机理。(2)根据国内外碾压实时监控的研究进展,结合GPS-RTK技术在测量中的应用研究、GPRS等现代及时通讯技术的研究和集成技术等,搭建了官地大坝浇筑过程对碾压质量主要影响因素的实时监控构架,并研究了其技术实现路径。(3)结合官地大坝的设计和施工特点及现场建设管理特点,开发建设了官地大坝浇筑过程质量实时监控系统,并在官地工程中进行了实施和应用。实现了官地碾压混凝土浇筑过程施工质量信息的实时和动态采集与处理,通过对系统的监测成果和数据进行统计和分析,确认了系统的应用效果,基本达到了预期目标,为碾压混凝土坝在浇筑过程中对施工质量进行实时监控开拓了新的方向,为系统进一步的深入研究和推广奠定了基础。
[Abstract]:The dam of Guandi Hydropower Station is roller compacted concrete dam with a height of 168 m and a huge scale. At the same time, it is required to complete the construction of the dam within 25 months, the overall construction period is relatively tight, and the construction intensity is high. The dam body also has the flood discharge surface hole, the flood discharge medium hole and so on, which increases the complexity of the construction to a certain extent. In the course of dam construction, temperature control is strict, and the area of single warehouse is large, which greatly increases the difficulty of construction quality control. In this paper, the real-time monitoring of the quality of the dam pouring process in Guandi Hydropower Station has been carried out in combination with the domestic and foreign research progress in the field of rolling, monitoring and other similar fields. Combined with the construction characteristics of Guandi dam, the main factors affecting the quality of roller compacting are analyzed. Combined with the application and research of GPS-RTK technology and the development of modern communication technology and system integration technology of GPRS, the real-time monitoring of rolling quality of Guandi Dam is put forward. Combined with the construction technology and site management characteristics of Guandi dam, a real-time monitoring system for the quality of Guandi dam is constructed and implemented. These research results fill the blank of real-time monitoring technology of roller compacted quality in the course of pouring roller compacted concrete dam, from which a series of results have been obtained. The main results are as follows: (1) according to the design and construction characteristics of the official RCC dam, the main factors affecting the roller compacted quality of Guandi dam in the course of pouring are determined. The mechanism of their influence on rolling quality is preliminarily analyzed. (2) according to the research progress of real-time monitoring of roller compacting at home and abroad, combined with the application of GPS-RTK technology in measurement, the research and integration technology of modern and timely communication technology such as GPRS, etc. The real-time monitoring framework of the main factors affecting the rolling quality of Guandi dam is set up, and its technical realization path is studied. (3) combined with the design and construction characteristics of Guandi dam and the characteristics of site construction management, A real-time monitoring system for the quality of Guandi Dam is developed and applied in Guandi Project. The real-time and dynamic collection and processing of the construction quality information in the pouring process of the official RCC is realized. Through the statistics and analysis of the monitoring results and data of the system, the application effect of the system is confirmed, and the expected goal is basically achieved. It opens up a new direction for the real-time monitoring of construction quality in the course of pouring roller compacted concrete dam, and lays a foundation for further research and popularization of the system.
【学位授予单位】：清华大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV544

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