工程地质学报2018，Vol.26Issue(2)：334-339,6.DOI:10.13544/j.cnki.jeg.2017-015
表面喷洒SH固土剂的泥石流堆积土的抗雨蚀性能
RAIN EROSION RESISTANCE OF DEBRIS FLOW FAN SPRAYED BY SH AGENT ON SURFACE
摘要
Abstract
The key to debris flow initiation is rain erosion and infiltration.With the controllable intensity artificial rainfall experiment,debris flow alluvium of Zhangye City,Gansu Province was chosen as media to study rainfall erosion-resistant on the 100 mm · h-1 heavy rain conditions.And debris flow alluvium was sprayed on surface with SH agents.The results of this study are as follows.The untreated soil surfaces were eroded obviously and formed several erosion gullies and it had a large number of erosion particles in bottom.However,soil treated with SH agent had significantly rainfall erosion-resistant.The protective layer formed by SH agent connecting soil particles had strong adhesion.There were no obvious trances and only a few erosion particles existed.Moreover,rainfall erosionresistant first was strengthened then stabilized with increasing SH amounts." Mosaic structure" layer formed on silt and sand soil were more stable than that of "floating structure" layer formed on gravely soil.The rainfall erosionresistant was effected by SH agent amounts and soil types.Considering of aspects of cost and rainfall erosionresistant etc.,the findings suggest that a SH agent amount of 1.0 kg· m-2 would be ideal for silt and sand soil,but need aptly to increase SH agent amounts for gravely soil.关键词
泥石流堆积土/抗雨蚀性能/SH固土剂/冲刷量/冲刷面形态Key words
Debris flow alluvium/Rainfall erosion-resistant/SH agent/Erosion quantity/Surface morphology of rain erosion分类
天文与地球科学引用本文复制引用
王永雷,柴寿喜,李敏..表面喷洒SH固土剂的泥石流堆积土的抗雨蚀性能[J].工程地质学报,2018,26(2):334-339,6.基金项目
国家自然科学基金(51409079,41272335),河北省自然科学基金(E2014202104),高等学校博士学科点专项科研基金(20131317120013),天津市科技支撑重大项目(15ZXCXSF00070)资助. （51409079,41272335）
