黔北地区红黏土大气影响急剧层深度探讨  

Discussion on the depth of the red clay atmosphere in northern Guizhou

作　　者：张洪明[1,2] 苟天红 胡梅新 ZHANG Hongming;GOU Tianhong;HU Meixin(114 Geological Brigade of Guizhou Geological and Mineral Exploration and Development Bureau,Zunyi 563000,Guizhou,China;No.2 Engineering Investigation Institute,Guizhou Bureau of Geology and Mineral Resources Co.,Ltd.,Zunyi 563000,Guizhou,China)

机构地区：[1]贵州省地矿局114地质大队,贵州遵义563000 [2]贵州省地矿局第二工程勘察院有限公司,贵州遵义563000

出　　处：《资源信息与工程》2024年第2期95-99,共5页Resource Information and Engineering

摘　　要：贵州黔北地区红黏土广泛分布。红黏土具有失水收缩、裂隙发育、上硬下软的特点。对于荷载不大的低层建筑,为充分利用红黏土上硬下软的特性、充分发挥浅部硬层的承载能力,采用天然地基时基础宜浅埋,充分利用上部坚硬、硬塑土层作持力层,但为避免地面不利因素的影响,红黏土地基基础埋深又必须大于大气影响急剧层的深度,该深度目前无相关规范数据可查。本文收集黔北地区仁怀、桐梓、湄潭、汇川等4个气象站最近较长一段时间内的气象资料,依据《膨胀土地区建筑技术规范》(GB 50112—2013)相关规定,对黔北地区红黏土大气影响急剧层深度进行计算,确定红黏土地基基础最小埋置深度,以供参考使用。Red clay is widely distributed in northern Guizhou.Red clay embodies the features including water loss shrinkage,crack development,upper hard and lower soft.For the low-rise building with low load,in order to make full use of the properties of red clay,the foundation should be buried in shallow when natural foundation were used,to make full use of the upper hard and hard plastic soil layer as the bearing layer.To avoid the influence of adverse factors on the ground,the red clay foundation must be buried deeper than the depth of the atmosphere affected by the rapid layer.There is no relevant specification data available for this depth at present.Based on the relevant regulations of Building Technical Code for Expansive Soil Area(GB 50112—2013),this paper collected more than 30 years'meteorological data from four weather stations in northern Guizhou,including Renhuai,Tongzi,Meitan and Huichuan,with the depth calculation of the red clay in the Guizhou area,the minimum embedded depth of the red clay foundation was determined for the reference.

关 键 词：红黏土 大气影响急剧层深度 水面蒸发量 蒸发力 

分 类 号：TU446[建筑科学—岩土工程]