CAJ | 학술논문

以长河坝水电站心墙砾质土高坝接触粘土开采质量控制为例,探讨了接触粘土不同颗粒分析方法和不同击实试验方法对检测成果的影响。通过对填土压实度及含水率的系列试验研究,提出了临界压实度概念,建议压实度宜控制在98%及以上。研究得出心墙接触粘土填筑采用宁潮勿干的原则,可增加心墙接触粘土的塑性和粘性、减小渗透及水库蓄水后大坝沉降、提高抗接触冲刷能力。研究成果对了解粘土工程性质、指导设计和施工具有一定工程意义。
이장하패수전참심장력질토고패접촉점토개채질량공제위례,탐토료접촉점토불동과립분석방법화불동격실시험방법대검측성과적영향。통과대전토압실도급함수솔적계렬시험연구,제출료림계압실도개념,건의압실도의공제재98%급이상。연구득출심장접촉점토전축채용저조물간적원칙,가증가심장접촉점토적소성화점성、감소삼투급수고축수후대패침강、제고항접촉충쇄능력。연구성과대료해점토공정성질、지도설계화시공구유일정공정의의。
In this paper,taking the quality control for contact clay mining of the high rock-fill dam with gravelly soil core wall in Changheba Hydropower Station for example,the effects of different particle analysis and compaction test methods on inspection result are studied.By further experimental study of compaction and moisture content,the concept of critical compaction is proposed,and it is suggested that the compaction should be controlled to 98% or higher.It is also concluded here that the filling of the contact clay of core wall should use higher moisture content rather than a lower one,which could increase the plasticity and viscosity of the contact clay of core wall,decrease the infiltration and dam settlement after water storage,and increase the contact erosion resistibility.The research achievement is of a certain engineering significance for studying the engineering property of clay and guiding the design and construction.