U型混凝土渠道掘进衬砌一体机的工程施工关键技术

发布时间：2018-03-29 05:01

本文选题：U型混凝土渠　切入点：掘进衬砌一体机　出处：《水利水电技术》2017年02期

【摘要】：针对U型混凝土渠施工存在的鼓包、蜂窝、破损、裂缝多、横断面尺寸不标准、渠道不顺直、地基土碾压不达标等问题,集常规农田沟渠的U型混凝土渠开挖、衬砌成型于一体,设计了U型混凝土渠道掘进衬砌一体机,其关键技术包括基础清淤及回填参数确定、施工放线与机械行走、机械开挖及衬砌细节控制等。实践结果表明,该U型一体机施工产生渠道的填土密实度达到0.92,渠道百米长裂缝数仅为0.2~0.5条,百米长鼓包、蜂窝、破损数均为0,断面偏移均值不超过4 mm,渠道渗漏量低于0.006 m~3/(m·h),人工成本降低了49.16%,总成本降低了7.99%,施工质量和经济性均优于传统现浇技术。该U型混凝土渠道掘进衬砌一体机在小型渠道输水和灌溉节水工程建设中具有广阔的应用前景。
[Abstract]:In view of the problems existing in the construction of U type concrete canal, such as bulging, honeycomb, breakage, many cracks, non-standard cross section size, unsmooth channel and substandard foundation soil rolling, U type concrete canal excavation of conventional farmland canals is carried out. In this paper, a U type concrete tunnel driving-lining integrated machine is designed. The key technologies include the determination of foundation silt clearing and backfill parameters, construction laying and mechanical walking, mechanical excavation and lining detail control, etc. The practical results show that, The filling density of the canal produced by the U-type integrated machine construction is 0.92, the number of cracks of 100 meters long is only 0.20.5,100 meters long bulging, honeycomb, The number of damage is 0, the average deviation of section is less than 4 mm, the leakage of the channel is less than 0.006 mm3 / mhh, the labor cost is reduced by 49.16, the total cost is reduced by 7.99, the construction quality and economy are better than the traditional cast-in-place technology. The U-type concrete canal driving-lining is superior to the traditional cast-in-place technology. Masonry machine has a broad application prospect in the construction of small canal water conveyance and irrigation water saving project.
【作者单位】：武汉大学水资源与水电工程科学国家重点实验室;湖北楚峰水电工程有限公司;
【分类号】：TV672;TV544

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