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341.
北京地铁十号线呼家楼站,主体结构开挖其拱部地层为粉细砂、圆砾、高含水量粘土,其自稳性差。通过水泥—水玻璃浆液、改性水玻璃浆液不同配比在不同地层止水、加固的试验应用及优化注浆工艺,提高了工效,确保了地面沉降的控制范围和施工安全。 相似文献
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Tim Schwanen David BanisterJillian Anable 《Transportation Research Part A: Policy and Practice》2011,45(10):993-1006
This paper seeks to develop a deeper understanding of the research on climate change mitigation in transport. We suggest that work to date has focused on the effects of improvements in transport technologies, changes in the price of transport, physical infrastructure provision, behavioural change and alternative institutional arrangements for governing transport systems. In terms of research methodologies, positivist and quantitative analysis prevails, although there are signs of experimentation with non-positivist epistemologies and participatory methods. These particular engagements with climate change mitigation reflect mutually reinforcing tendencies within and beyond the academic transport community. We first draw on a revised version of Thomas Kuhn’s philosophy of science to explore the path dependencies within transport studies, which are at least partly responsible for the predisposition towards quantitative modelling and technology, pricing and infrastructure oriented interventions in transport systems. We then employ the governmentality perspective to examine how transport academics’ engagements with climate change mitigation depend on and align with more general understandings of climate change in UK society and beyond. The analysis makes clear that ecological modernisation and neo-liberal governmentality more generally provide the context for the current focus on and belief in technological, behaviour change, and especially market-based mitigation strategies. While current research trajectories are important and insightful, we believe that a deeper engagement with theoretical insights from the social sciences will produce richer understandings of transport mitigation in transport and briefly outline some of the contributions thinking on socio-technical transitions and practice theories can make. 相似文献
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玻璃钢游艇建造检验技术目前尚未完善,面临着许多矛盾和困惑,本文主要探讨了玻璃钢游艇建造检验的流程,以及检验内容,同时对检验过程中应予以注意的事项做了简要的介绍。 相似文献