冻胀土及高地下水位渠道上干砌块石衬砌应用研究

Research on the Application of Dry Block Stone Lining on Freezing Heaved Soil and High Groundwater Level Channels

作为一种砌石防冻材料,块石抗冻效果好、适应性强、使用年限长。通过对大型灌区疏勒河流域水资源利用中心昌马灌区高地下水位渠段冻胀破坏存在危害及原因进行研究,采取干砌块石衬砌形式并置回避、适应冻胀法以及置换冻胀基土等措施,解决了在冻胀土及高地下水位其他衬砌形式易冻胀变形、维修费用高等难题,便于日常施工,降低费用,同时具有较好的处理效果和实践效果,值得推广。

As a stone masonry antifreeze material,block stone has advantages such as impact resistance,wear resistance,and economy,and was widely used in China.Block stone lining channels has good frost resistance,strong adaptability,and long service life.This article studied the phenomenon of frost heave damage and preliminary analysis of the causes of frost heave in the high ground water level channel section of the Changma Irrigation District in the Shule River Basin.The dry cut stone lining form was used to replace the frost heave soil under it,in order to discharge the seepage of the foundation soil and reduce frost heave,achieving the goal of solving frost heave damage.The practical effect was good,providing reference for the design and construction of channels in the high ground water level area of the frost heave area.