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Framework for near real-time simulation of earthmoving projects using location tracking technologies
The cost-and-time-optimized planning of earthmoving projects has been significantly boosted as a result of deploying simulation techniques. However, the realism and accuracy of the simulation models diminish as a result of the heavy reliance on the statistical data and of not taking into account the context-specific features of the project. To address this issue, this research proposes an overarching tracking-technology-independent framework based on the integration of new location tracking technologies with the simulation model in order to continuously fine-tune the simulation model. A set of multi-dimensional rules that accommodates various types of 2D and 3D sensory data are proposed to capture the details of truck and excavator motions. The proposed framework encompasses a method for a multi-step data processing that considers equipment-specific geometric and operational features to improve the quality of location data and, in turn, enhance the accuracy of the equipment state-identification. Furthermore, environmental factors are proposed to be continuously monitored to discriminate between long and short-term changes in the operation cycle time. A loosely-coupled multi-tier prototype is developed to test and demonstrate the effectiveness of the proposed approach. Two case studies, one in a controlled laboratory environment and one based on actual data from a mining site, are presented. The proposed framework is found to contribute to enhancing the quality of near real-time simulation and capturing the finest details of truck and excavator motions through the concurrent consideration of the fleet as a whole. 相似文献
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分析了"蝶"形箱梁断面桥梁的优点,结合工程实例,通过建立计算模型,对该箱梁断面(30+43+30)m预应力连续梁计算问题进行了研究,得到了可用于实际的施工方案,并阐述了具体的施工技术要点,以供参考。 相似文献
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喷射混凝土施工工艺无疑是最令人满意的结构混凝土修补方法之一.为在水运工程中推广应用喷射混凝土施工工艺,针对提高喷射混凝土耐久性及喷射混凝土施工工艺的适用性开展了试验研究工作.本文介绍了喷射合成纤维混凝土的性能、特点和施工工艺以及在修复加固工程中的应用实例. 相似文献
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为实现低品位伊利石矿开发利用,以江西某金矿伴生伊利石矿为研究对象,利用XRD、SEM、粒度检测等手段对其物化特性进行表征,通过湿法分级提纯、磁选、漂白等多工艺组合,探索合理的选矿工艺流程。结果表明,原矿系伊利石/高岭石共生和石英矿物伴生的高硅铁低铝砂型伊利石矿,伊利石和石英呈片状和粒状分布,且具有不规则性; 铁含量高且不易除去,对精矿产率影响较大; 经湿法分级提纯、磁选、漂白等多工艺组合提纯所得伊利石粒径2~5 μm,白度80.7%,Al2O3品位由2.03%提高至28.81%,能满足陶瓷、橡塑等领域应用要求。 相似文献
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