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平陆运河土石方多路径利用的基础问题与解决途径
肖建庄, 沈剑羽, 马少坤, 李卓峰, 段珍华, 程耀飞, 肖绪文
中国工程科学 ›› 2024, Vol. 26 ›› Issue (1) : 251-262.
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平陆运河土石方多路径利用的基础问题与解决途径
Multi-path Utilization of Earthwork in Pinglu Canal: Basic Problems and Solutions
平陆运河是西部地区陆海新通道骨干工程，其建设过程将产生涵盖23 种岩土类型、成分杂且分布散的土石方约3.39×108 m3，因而土石方资源化利用是建设平陆运河绿色工程的重要组成部分；正在实施的土石方利用途径以抬填造地为主（占50%以上），存在高品质的资源化利用率低、产品应用需求研究滞后、创新技术少、数字化程度低、碳排放评价缺失等基础问题，阻碍了平陆运河土石方的多路径高效利用。本文针对相关基础问题，着重从资源化、数字化、低碳化的角度出发，提出了平陆运河土石方利用创新解决途径：挖掘工程自身及周边地区的潜在应用需求，根据不同岩土的类型分别形成利用途径，实现多场景应用和多路径利用；构建开挖区土石方地质信息模型、土石方信息数据库等，形成土石方的数字化“挖 ‒ 运 ‒储 ‒ 用”技术；建议针对多利用路径的碳排放进行生命周期评价，结合土石方数据库开展碳排放的动态评价，研发模块化移动式处置装备、原位利用技术以支持实现降本减碳。在平陆运河工程的现状基础上，资源化、数字化、低碳化的有机结合将为平陆运河绿色工程建设提供坚实支撑，也可为后续其他工程的土石方多路径利用提供技术参照。
Pinglu Canal is the backbone project of the New Western Land-Sea Corridor of China. The canal project generated a total of 3.39 × 108 m3 of earthwork that covers approximately 23 types of rocks and soil and is characterized by large amount, diverse composition, and scattered distribution. Currently, the earthwork is utilized mainly through landfill and reclamation (over 50%); however, basic problems exist, including a low high-quality utilization rate, lagging research on demand for earthwork-reused products, lack of innovative technologies for earthwork reuse, a low level of digitalization, and lack of carbon emission evaluation. To address these problems, this study proposes innovative solutions from the perspectives of resource utilization, digitization, and carbon reduction. First, it is necessary to explore the potential application demands for the canal project itself and surrounding areas and propose corresponding utilization paths according to different types of rock and soil, thus to achieve multi-scenario, multi-path utilization. Second, geological information models and information databases should be established for earthwork in excavation areas to help develop a digital excavation‒transportation‒storage‒utilization technology for earthwork. Moreover, it is recommended to conduct a lifecycle assessment to clarify the carbon emissions of multi-path utilization technologies, achieve a dynamic evaluation of carbon emissions by combining with the information from the earthwork databases, and develop modular mobile-type disposal equipment and in-situ utilization technologies to achieve the reduction of cost and carbon emissions. The organic combination of resource utilization, digitization, and carbon reduction is expected to provide a favorable support for the green construction of the Pinglu Canal Project.
平陆运河 / 土石方 / 多路径利用 / 地质信息模型 / 数据库 / 碳排放
inglu Canal / earthwork / multi-path utilization / geo-information model / database / carbon emissions
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