The embankments with asphalt concrete cores are more than 80 including 20 in china and none of them has been repaired since 1955 其中沥青混凝土心墙坝有80余座，我国有20余座，自1955年至今无一修补。
Since 1970 " s , ten and more poured asphaltic concrete core rockfill dams ( pcrd ) have been built in the northeren region of china 自七十年代以来，我国北方地区已建成浇筑式沥青混凝土心墙堆石坝十余座。
Meanwhile quality control of asphalt concrete core construction and character of construction diversion are analyzed and mentioned briefly 同时对沥青混凝土心墙的施工质量控制、施工导流特点等做了简单的分析和论述。
High asphaltic concrete core dam is one of the new developing directions in dam construction of the world . it is important to study the parameters back analysis 高沥青混凝土心墙坝是当今世界坝工领域新的发展方向之一，对沥青混凝土心墙材料进行参数反演分析具有重要的理论意义和实用价值。
3 ) the six parameters of the asphaltic concrete core dam is inversed by least square , bayes random and bp neural network method . the sensitivity analysis of the parameters is studied 分别用最小二乘法、 bayes随机法和bp人工神经网络法反演沥青混凝土心墙材料的六个参数，并对参数的敏感性进行研究。
Combined with the behavior in 1st constructing period of maopingxi dam , nonlinear fem calculation and material parameter back analysis are applied to the maopingxi asphaltic concrete core dam 本文结合茅坪坝期施工情况，对茅坪溪沥青混凝土心墙坝进行了非线性有限元应力应变计算和坝体材料参数反演分析。
At mean time , it is very important to study and adopt new dam construction techniques in the world , such as to focus on the wide application of the rock - fill concrete deck and rolled asphalt concrete core dams 同时，学习和引进国外坝工新技术，如重点推广应用的混凝土面板堆石坝和碾压式沥青混凝土心墙坝等新坝型。
2 ) duncan e - u model is applied to the material of the dam . the feasibility of using duncan model is discussed . the duncan e ~ u model which considers the creep character of asphaltic concrete is adopted 坝壳材料选用邓肯e -模型；讨论沥青混凝土心墙材料选用邓肯模型的可行性，最终采用考虑沥青混凝土蠕变特性的改进邓肯模型。
The rolled asphalt rock - fill dam with concrete core is one of new impervious structures in the rock - fill dams . it has very high imperviousness with ability to fit the deformation and it is easy to organize the construction 碾压式沥青混凝土心墙坝是土石坝的一种新型防渗结构，具有防渗性，能好、适应变形能力强、易于施工等特点。
Asphalt concrete core for embankment dams have got notable development in recent years , but the fundamental properties of asphalt concrete cores is not known clearly which has a hold on wide use of this kind of dams 近年来，土石坝沥青混凝土心墙在国内外有了很大的发展，但是目前对沥青混凝土材料的基本性能还不太了解，影响着这种坝型的发展。
