论文部分内容阅读
本文从膨胀土气候影响深度的概念和意义出发,以宁明地区膨胀土为例,介绍了该地区的气候及地质特征,首次以工程勘察中的标准贯入试验为基础,通过分析贯入深度10cm的锤击数N10的平均值及变异系数随深度变化关系,发现在浅层分别存在低值平缓段和“U形谷”标志,由此得到了该地区气候影响深度,并与胀缩裂隙标志法和原位跟踪观测法所得结果进行了对比分析,结合实体工程的处治应用,证明采用勘察方法确定的气候剧烈影响深度进行设计,技术可行,经济合理。
Based on the concept and significance of the depth of influence of expansive soil climate, taking the expansive soil in Ningming area as an example, this paper introduces the climatic and geological characteristics of this area. Based on the standard penetration test in engineering survey for the first time, The average value of the number of hammering N10 and the variation coefficient of variation with depth at 10cm showed that there were low-level flat segments and “U-shaped valley” signs in the shallow layer respectively, and the depth of climate influence in this area was obtained. Contrasting the results obtained from the shrinkage marker method and the in situ tracking method, combined with the application of solid engineering, it proves that the design method is feasible and economical with the deep influence of the climate determined by the survey method.