CAJ | 학술논문

针对传统土工膜垫层材料不能满足深覆盖层上高堆石坝面膜防渗体稳定性及适应变形要求的问题，采用室内渗透系数、抗压、抗弯折、直剪及结构模型试验等方法对一种新型多孔垫层材料———聚合物透水混凝土的透水性能、基本力学特性、界面抗剪强度及适应坝体变形能力等工程特性进行了一系列试验研究，并与传统无砂混凝土垫层材料的工程特性进行了对比试验与分析。试验结果表明，聚合物透水混凝土在具有较高强度和透水性的同时，还具有较低的弹性模量和显著的韧性特征，相对无砂混凝土具有更强的适应坝体变形能力，更适合用作深覆盖层上高堆石坝面膜防渗体垫层。
침대전통토공막점층재료불능만족심복개층상고퇴석패면막방삼체은정성급괄응변형요구적문제，채용실내삼투계수、항압、항만절、직전급결구모형시험등방법대일충신형다공점층재료———취합물투수혼응토적투수성능、기본역학특성、계면항전강도급괄응패체변형능력등공정특성진행료일계렬시험연구，병여전통무사혼응토점층재료적공정특성진행료대비시험여분석。시험결과표명，취합물투수혼응토재구유교고강도화투수성적동시，환구유교저적탄성모량화현저적인성특정，상대무사혼응토구유경강적괄응패체변형능력，경괄합용작심복개층상고퇴석패면막방삼체점층。
For the high rockfill dam built on the foundation of large overburden depth, the traditional cushion materials cannot maintain the stability of geomembrane surface barrier and satisfy the requirement of adaptability to dam deformation. Laboratory experiments such as: permeability test, compressive strength test, flexural property test, interface direct test, and structural model test were carried to evaluate the permeability, basic mechanical property, interface strength, and adaptability to deformation of new porous cushion material ( polymer permeable concrete) . Additionally, comparative tests and analysis of traditional cushion material-non-fine concrete-were also conducted. The test results show that polymer permeable concrete not only has high mechanical strength and water permeability, but also has lower elasticity modulus and obvious toughness. It is indicated that polymer permeable concrete has stronger adaptability to flexural deformation compared to non-fine concrete. It is concluded that the polymer permeable concrete is a better alternative to the traditional cushion material of geomembrane surface barrier for high rockfill dam built on thick foundation.