水库冰盖在升温膨胀下的极限破坏  

Limit Failure of Ice Cover in Reservoirs Under Temperature Expansion

作　　者：李锋[1] 马红艳[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,辽宁大连116024

出　　处：《黑龙江大学工程学报》2010年第3期103-105,共3页Journal of Engineering of Heilongjiang University

基　　金：国家自然科学基金资助项目(10772036;50879008)

摘　　要：以黑龙江省红旗泡水库冰盖极限破坏过程的现场观测和模拟试验结果为依据,分析了破冰槽限制冰压力的力学机理,论证了冰盖的变形破坏过程,通过简化的计算模型得到了冰盖的极限破坏力。分析结果表明,传统的破冰槽可使1 m厚的冰盖极值冰压力至少降低40%。On the basis of the records of field observation data for ice cover limit failure process in Hongqipao Reservoir,Heilongjiang Province,China,and the results of laboratory simulation test,this paper presents mechanism that an ice-breaking trench restricts static ice pressure and proves deformation and failure process of ice cover.Through a simplified calculating model,limit failure force of ice cover is obtained.Analysis results verify that traditional ice-breaking trench can at least reduce the limit ice pressure in 1 m-thick ice cover by 40%.

关 键 词：水库 冰盖 破冰槽 极限破坏 

分 类 号：TV679.2[水利工程—水利水电工程]