关键词：
低净空隧道
沥青路面施工
施工安全
职业健康
摘要：
随着城市地下交通基础设施的快速发展,低净空隧道沥青路面施工面临环境密闭、空间受限等问题,对施工安全、人员健康及工程质量提出了更高要求。上海市北横通道工程中的隧道部分净空高度仅3.2米,传统沥青混合料施工中存在粉尘污染、有害气体排放及运输受限等突出问题。本文以此为依托,通过分析决定采用引入高效控尘抛丸设备、选择净味沥青混合料及短驳技术,并研究其应用效果。结果显示:高效控尘抛丸设备通过负压吸尘与多级过滤技术,有效将隧道内粉尘浓度降至8~10 mg/m3,降幅可达85%~90%左右,有效改善了作业环境;净味沥青混合料的采用,减少了34%~37%的有害气体排放量,且其路用性能指标与热拌沥青混合料相当;短驳技术的运用实现了混合料在受限空间内的连续高效运输,并制定了严格温控标准及质量监测流程,确保了混合料的性能稳定。经实践及双重差分模型验证,这些技术有效解决了低净空隧道施工中的关键问题,为类似工程提供了兼顾安全、健康与效率的解决方案,对推动城市地下交通基础设施建设具有一定的工程应用价值。With the rapid development of urban underground transportation infrastructure, the construction of asphalt pavement in low clearance tunnels is facing problems such as environmental sealing and limited space, which puts forward higher requirements for construction safety, personnel health, and engineering quality. The clear height of the tunnel section in the North Cross Island Tunnel Project in Shanghai is only 3.2 meters, and there are prominent problems such as dust pollution, harmful gas emissions, and transportation restrictions in traditional asphalt mixture construction. Based on this, this article analyzes and decides to adopt high-efficiency dust control shot blasting equipment, select clean asphalt mixture and short haul technology, and studies their application effects. The results showed that the high-efficiency dust control shot blasting equipment effectively reduced the dust concentration in the tunnel to 8~10 mg/m3 through negative pressure suction and multi-stage filtration technology, with a reduction of about 85%~90%, effectively improving the working environment;The use of clean flavored asphalt mixture reduces harmful gas emissions by 34%~37%, and its road performance indicators are comparable to those of hot mix asphalt mixture;The application of short haul technology has achieved continuous and efficient transportation of mixtures in confined spaces, and strict temperature control standards and quality monitoring processes have been established to ensure stable performance of the mixtures. Through practice an
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详细信息
中文科技期刊
