共查询到19条相似文献,搜索用时 109 毫秒
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文章结合广西某高速公路改扩建段高边坡工程实例,分析了该高边坡防护工程所涉及的土质、坡率及施工安全技术措施等相关要素,提出了适用于该工程的边坡防护技术方案。 相似文献
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路基病害养护处治应遵循以防为主、防治结合、力求根治的原则,通过综合技术经济比较,因地制宜,采取合理的处治方案。本文选取了皖南山区某高速公路高边坡路段的塌方综合养护处治案例,从病害成因到处治方案的选择,进行了全面分析和总结,对高边坡路段的养护管理具有较好的借鉴意义。 相似文献
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文章以309国道武安段改建工程为例,简要介绍了石方爆破技术的施工工艺、施工方法及施工中应注意的问题,进而说明了石方爆破技术在道路改建中的重要性。 相似文献
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针对软土地层地铁盾构法区间隧道穿越已建公路隧道地下连续墙的施工需求,选用和实施爆破法的技术方案。本文分别从爆破实施方案的选择、模拟试验以及爆破法实施过程的要点等方面进行了论述和分析,可为以后类似工程提供参考。 相似文献
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运营高速公路上边坡石方爆破是工程建设领域的一个难题,常规爆破必然危及高速公路自身结构安全和行车安全。文章介绍了石方普通爆破、孔外延时孔间微差定向松动爆破、劈裂机静态爆破三种不同的爆破方式,并针对运营高速公路实际,提出结合运用孔外延迟孔间微差定向松动爆破和劈裂机静态爆破两种爆破方法,能有效地对运营中的高速公路上边坡石方进行安全爆破。 相似文献
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Runoff and soil erosion from highway construction spoil deposits: A rainfall simulation study 总被引:3,自引:0,他引:3
Jianzhi DongKeli Zhang Zhongling Guo 《Transportation Research Part D: Transport and Environment》2012,17(1):8-14
To measure soil loss from these road construction spoils, 30 rainfall simulations involving five rainfall intensities were conducted to study runoff and soil erosion processes on a road in China. Twenty-five of the rainfall simulations were carried out on loose materials five different slopes. Another five rainfall simulations were conducted on compacted road materials with a slope of 30.6%. The results show that soil bulk density has a positive effect on runoff rate, and the effect of slope on runoff rate changes with rainfall intensity. Higher soil bulk density increases soil loss under low rainfall intensity, but decreases soil loss when rainfall intensity is high. Soil loss is positively related to slope, but the relationship differs from that in prior studied of croplands and disturbed lands. Equations for predicting soil erosion from loose materials and compacted road are developed. 相似文献
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