HDPE膜柔性垂直防渗技术在垃圾填埋场中的应用

Application of HDPE Geomembrane Flexible Vertical Anti-permeablility Technology in Landfills

介绍了垃圾填埋场防渗体系的分类:水平防渗与垂直防渗,针对其中的垂直防渗体系介绍了2种技术的定义和各自的优缺点:刚性防渗和柔性防渗,讲解了HDPE膜的材料特性,以及其应用于垃圾填埋场垂直防渗的原理和优势,从现场的实际应用出发,重点介绍了HDPE膜垂直防渗的整个施工过程,包括设置引沟与导墙、开挖沟槽与泥浆护壁、膜的预制与转运、膜的垂直下放与连接、回填五个步骤,同时介绍了HDPE膜应用于垃圾填埋场垂直防渗时需要进行的几种检测方法,并分别介绍了其原理,最后根据实际施工经验提出了3点HDPE膜垂直防渗施工中保证质量、降低成本、提高效率的建议。

The classification of landfill anti-permeablility system was introduced:horizontal anti-permeablility technology and vertical anti-permeablility technology.According to the anti-permeablility system,the definition of two types of anti-permeablility technology and their advantages and disadvantages were introduced:rigid anti-permeablility and flexible anti-permeablility.The material properties of HDPE membrane,and the principle and advantages of HDPE geomembrane applied to landfill vertical anti-permeablility were explained.From the practical application of the technology,the entire construction process of HDPE geomembrane vertical anti-permeablility was focused on:seting up the lead trench and guide wall,excavation trench and mud protection wall,prefabrication and transport of HDPE geomembrane,vertical lowering and connection of HDPE geomembrane,and backfill.At the same time,several detection methods were introduced when HDPE membrane was used in landfill,and its principles were introduced respectively.According to practical construction experience,the suggestions were proposed to ensure quality,reduce cost and improve efficiency in the vertical anti-permeablility construction of HDPE geomembrane.