李永琳
    (中广核工程有限公司北方分公司，大连116319)

[摘要] 塑性混凝土防渗墙在抛石围堰上的应用，在防渗墙施工中并不多见，尤其是在抛石堤块石粒径较大、孔隙率40%以上、强渗漏的地质条件下，运用“漏失地层造孔的控制技术”和“气举反循环排渣清孔技术”等施工关键技术，克服造孔成槽漏浆塌孔等诸多困难，利用塑性混凝土形成地下连续防渗墙。实践证明上述几项关键技术的合理运用，能够有效的解决在抛石堤上施工防渗墙的技术难题。
[关键词] 辽宁红沿河核电厂；抛石堤；塑性混凝土；防渗墙；关键技术

Key tectonic technologies about plastic concrete cutoff wallin Liaoning Hongyanhe nuclear power plant
Li Yonglin
(China Nuclear Power Engineering Co., Ltd.,  Dalian 116319,  China)

Abstract: The plastic concrete cutoff wall is used at the riprap cofferdam. This is rare for cutoff wall construction, especially when used in the larger sized rock riprap breakwater. It has more than 40 porosity and strong protection against leakage. With the successful use of "leakage stratum formation control technology", "air-lift reverse circulation slag to dig a hole technology", and the other technologies, they can overcome the difficulties such as leakage and hole-collapse, and make a groove through the built hole. According to design requirements, the successful use of plastic concrete form continuous underground cutoff wall. Practice has proved that the rational use of several key technologies can effectively solve the technical problems of riprap embankment in the cut-off wall construction.
Keywords: Liaoning Hongyanhe nuclear power plant; riprap breakwater; plastic concrete; cutoff wall; key technology