【摘 要】
：
The loss of life risk evaluation model for dam break is built in this paper.By using an improved Monte Carlo method,the overtopping probability induced by concu
【机 构】
：
School of Civil Engineering,Tianjin Municipal Water Conservancy Survey and Design Institute
论文部分内容阅读
The loss of life risk evaluation model for dam break is built in this paper.By using an improved Monte Carlo method,the overtopping probability induced by concurrent flood and wind is calculated,and the Latin Hypercube Sampling is used to generate random numbers.The Graham method is used to calculate the loss of life resulting from dam failure.With Dongwushi reservoir located at Hebei Province taken as an example,the overtopping probability induced by concurrent flood and wind is calculated as 4.77×10 6.Loss of life is 24 220 when the warning time is0.25-1 h and flood severity understanding is vague,which indicates that the risk is intolerable.The losses of life under three other conditions are tolerable: warning time 0.25-1 h,and precise flood severity understanding; warning time more than 1 h,and vague flood severity understanding; warning time more than 1 h,and precise flood severity understanding.
其他文献
在不同温度的CO2气氛中对Pd膜进行了毒化,将毒化后的Pd膜与氢气反应并测试其氢同位素渗透性能.采用XPS、SEM等检测了CO2在不同温度下对Pd膜毒化后的表面成分与形貌,并对比分
采用真空感应熔炼炉制备NiTi合金,并对重熔后的合金进行不同制度热处理.研究NiTi形状记忆合金边角料重熔合金不同温度时效后的室温拉伸力学性能.结果表明,NiTi形状记忆合金边
采用热分解法制备Ti/Sb-SnO2电极和Ti/Sb-SnO2/Ce电极,采用扫描电子显微镜(SEM)、X射线衍射(XRD)仪和电化学实验技术对电极的表面形貌、物相组成和电化学性能进行表征.结果表
研究了稀土金属Gd的纯度对Gd52.5Co18.5Al29非晶合金的玻璃形成能力和磁热效应的影响.研究表明Gd的纯度从99.94%下降到99.2%,非晶合金的临界直径从4mm减小到3mm:磁热效应并未
采用等辊径、等辊速冷轧复合技术制备了AgNi10/Cu/Fe三层复合材料,对其界面结合机制进行了研究。复合前对三层材料分别进行再结晶退火,获得均匀的原始组织及相近的硬度,并用
用高精度非原位XRD结合Rietveld精修对正交Li1-xMnO2(简写为o-Li1-xMnO2,0≤x≤0.95)在首次充电(电化学脱锂)过程中物相及结构的演变进行了研究.结果表明,o-LiMnO2电极的电压
以甲醛为还原剂,采用银氨液滴入还原液的镀液加入方式进行化学镀银法制备导电滑石粉,对滑石粉化学镀银条件进行了研究.探讨了银氨液pH值、硝酸银浓度、甲醛浓度、粉体装载量
The series connection of multistage pumping module is the common concept of deepwater riserless mud recovery drilling system. In this system, the influence of t
The-main-objective-of-this-study-is-to-numerically-investigate-the-characteristics-of-ultimate-compressive-strength-of-stiffened-panels-with-opening-and-also-to
目的 探讨依托咪酯喉罩全麻在颅内动脉瘤介入手术中的可行性与安全性.方法 行颅内动脉瘤介入手术并ASA分级Ⅰ~Ⅲ级患者62例,随机分丙泊酚气管插管组(PE组)31例和依托咪酯喉罩