CAJ | 학술논문

散装氟石粉在海运途中往往因为水分含量过高，在波浪荷载作用下表面大量的析水产生流态化现象，从而引发沉船事故．由于事故的频繁发生，人们逐渐意识到氟石粉流态化成因的重要性．在国内外对氟石粉流态化现象研究鲜见的情况下，主要侧重于含水率和动应力的影响，采用动三轴设备对氟石粉的动力特性进行一系列的试验，分别从应变一振次曲线、动孔压力一振次曲线以及动强度特性曲线进行分析，探讨含水率和动应力对氟石样破坏的影响．试验结果表明当含水率控制在10％以下时，氟石粉在黄河三角洲埕北海域50年一遇的波浪压力作用下，氟石粉不会发生明显流态化现象，从而为实际海运中氟石粉的含水率提供安全的范围，同时为氟石粉的动力特性进一步研究提供了理论基础．
산장불석분재해운도중왕왕인위수분함량과고，재파랑하재작용하표면대량적석수산생류태화현상，종이인발침선사고．유우사고적빈번발생，인문축점의식도불석분류태화성인적중요성．재국내외대불석분류태화현상연구선견적정황하，주요측중우함수솔화동응력적영향，채용동삼축설비대불석분적동력특성진행일계렬적시험，분별종응변일진차곡선、동공압력일진차곡선이급동강도특성곡선진행분석，탐토함수솔화동응력대불석양파배적영향．시험결과표명당함수솔공제재10％이하시，불석분재황하삼각주정북해역50년일우적파랑압력작용하，불석분불회발생명현류태화현상，종이위실제해운중불석분적함수솔제공안전적범위，동시위불석분적동력특성진일보연구제공료이론기출．
Bulk fluoride powder containing large amounts of water can cause the phenomenon of tluid- ization with lots of water precipitation on the surface, which will lead to the shipping wreck. As the frequent oc- currence of shipwreck, researchers begin to investigate the fluidization causes of fluoride powder. In the case of the few fluidization studies on the fluoride powder at domestic and overseas, this paper focused on the impact of moisture content and dynamic stress, and a series of tests using dynamic triaxial device was carried out. The strain - vibration curve, dynamic pore water vapor pressure curve and dynamic strength curve were then drawn to discuss the influence of the damage degree of fluoride sample. The results show that when the moisture content is below 10%, the fluoride powder is under security with no obvious fluidization by the impact of wave loads hap- pened once every 50 years in the Chengbei waters of the yellow fiver delta. This paper offered the safe moisture content range and also provided a theoretical basis for the further research of the dynamic characteristics of fluor- ide powder.