Spraymec7110WPC湿喷台车施工关键技术与设备配套研究

发布时间：2018-02-04 04:25

本文关键词： 隧道工程施工技术质量控制设备配套经济性　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：隧道施工中,湿喷混凝土因具有改善施工作业环境、便于混凝土集中生产及质量控制等优越性而被广泛应用,但是如果湿喷设备使用不当,会造成湿喷混凝土一次喷射厚度小、回弹率高、速凝剂掺量不稳定等问题;湿喷与钻爆等隧道施工机械是否配套合理直接影响着施工进度和成本,合理化的机械化配套施工方案,需要综合考虑工程进度、工程成本、设备种类和能力等诸多条件。本文以甘肃路桥集团承建工程小川隧道和成州隧道实体工程为依托,以Spraymec7110WPC湿喷台车为研究对象,进行了以下几个主要方面的研究:通过研究Spraymec7110WPC湿喷台车混凝土湿喷机理,泵送过程和喷射过程,得到了最佳喷射速度模型和泵送充满度标定方法,为精确控制速凝剂掺量和提高喷射质量提供了理论依据。提供了一种混凝土回弹量的测定方法,并运用该方法得到了湿喷台车喷射的距离、风压和混凝土回弹量之间的关系。建立了湿喷混凝土一次喷射厚度模型,并通过实验分析对模型进行修正,为预估混凝土喷射厚度提供数据支持。通过建立隧道施工设备匹配理论,确定了发挥单机最佳作业性能的设备优化组合模式,实现了施工质量、工作效率和作业成本的协调与平衡;基于Spraymec7110WPC湿喷台车进行了隧道施工设备作业配套,并对其进行经济性研究。通过实体工程应用,验证了隧道施工与设备配套技术的可行性、适用性及技术经济性。成果应用提高了施工质量和工作效率,降低了施工成本,增加了施工安全性和环保性。
[Abstract]:Wet shotcrete has been widely used in tunnel construction because of its advantages such as improving the construction environment, facilitating the centralized production of concrete and quality control, but if the wet spraying equipment is not used properly. It will cause some problems such as small thickness of wet shotcreting concrete, high rebound rate and unstable dosage of accelerator. Wet-jet and drilling-blasting tunnel construction machinery is reasonable or not directly affect the construction progress and cost, rational mechanization of the supporting construction scheme, need to consider the progress of the project, engineering costs. Based on the construction project of Xiaochuan Tunnel and Chengzhou Tunnel of Gansu Luqiao Group, this paper takes Spraymec7110WPC wet jet bench car as the research object. The main aspects are as follows: through the study of Spraymec7110WPC wet spraying platform concrete wet spraying mechanism pumping process and spray process. The optimal injection velocity model and the calibration method of pumping filling degree are obtained, which provides a theoretical basis for accurately controlling the dosage of accelerator and improving the spray quality, and provides a method for measuring the rebound quantity of concrete. The relationship between the distance, wind pressure and the rebound of concrete is obtained by using this method. The model of the thickness of wet spray concrete is established, and the model is modified by experimental analysis. Through the establishment of the tunnel construction equipment matching theory, the optimal combination model of the equipment to give play to the best working performance of the single machine is determined, and the construction quality is realized. Coordination and balance of work efficiency and activity cost; Based on Spraymec7110WPC wet jet bench car is used in tunnel construction equipment operation, and its economy is studied, which is applied in solid engineering. The feasibility, applicability and technical economy of the matching technology of tunnel construction and equipment are verified. The application of the results improves the construction quality and work efficiency, reduces the construction cost, and increases the construction safety and environmental protection.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U455.4

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