共查询到20条相似文献,搜索用时 62 毫秒
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根据最新精细笪力异常场及其三维反演结果,用类比法研究了鄂西与滇西两区域各波长笪力场变异特征和地壳层间结构差异,并对重点监测区危险地段划分所需的深部构造信息和动力学特征进行了探讨。 相似文献
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老旧城区震害特点——包头西6.4级地震包头东河区震害的几点认识 总被引:1,自引:0,他引:1
包头西6.4级地震虽属中等强度地震,但地震中却暴露了老旧城区一些建筑结构抗震能力差的弱点,本文例举了四种不同建筑类形的结构在本次地震中的表现,其中包括早期建造的平房及80年代以后按烈度8度进行抗震设防的多层砖混和框架结构,同时给出了简单的评述。 相似文献
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为了提高砖混结构建筑物的抗震能力,常用的方法是设置构造柱。叙述了在地履区设置构造柱的位置、方法、受力校的计算方法等。指出,在地震区设置构造柱可以有效地提高房屋的抗震能力。 相似文献
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利用乌兹别克斯坦安格连露天采煤场的工业爆破试验,研究了黄土的地震动力学效应,对不同烈度区地震裂隙、地震沉陷、滑坡和液化等地震形变进行了分析。认为这些地震形变的发育取决于一系列工程地质和地震因素,如黄土的地貌、土层厚度、工程地质性质、土层湿度、沉陷形、变形、稳定性特征以及地下水埋藏深度和土层的静荷载,等等。此研究对黄土的抗震性能和建筑安全性评价具有重要意义。 相似文献
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M. N. French R. L. Bras W. F. Krajewski 《Stochastic Environmental Research and Risk Assessment (SERRA)》1992,6(1):27-45
A procedure for short-term rainfall forecasting in real-time is developed and a study of the role of sampling on forecast ability is conducted. Ground level rainfall fields are forecasted using a stochastic space-time rainfall model in state-space form. Updating of the rainfall field in real-time is accomplished using a distributed parameter Kalman filter to optimally combine measurement information and forecast model estimates. The influence of sampling density on forecast accuracy is evaluated using a series of a simulated rainfall events generated with the same stochastic rainfall model. Sampling was conducted at five different network spatial densities. The results quantify the influence of sampling network density on real-time rainfall field forecasting. Statistical analyses of the rainfall field residuals illustrate improvement in one hour lead time forecasts at higher measurement densities. 相似文献
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《地震工程与工程振动(英文版)》2014,(4)
正This journal is established by the Institute of Engineering Mechanics(IEM),China Earthquake Administration,to promote scientific exchange between Chinese and foreign scientists and engineers so as to improve the theory and practice of earthquake hazards mitigation,preparedness,and recovery.To accomplish this purpose,the journal aims to attract a balanced number of papers between Chinese and 相似文献
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George W. Housner 《地震工程与工程振动(英文版)》2008,7(2):I0001-I0001
Destructive earthquakes have caused great damage in China and the United States and collapsing buildings havecaused many deaths and injuries. The field of earthquake engineering studies earthquake hazards, the occurrence ofearthquakes of various magnitudes, the nature of the ground shaking during an earthquake, the vibration of structuresduring earthquakes, the strengthening of existing structures and the design of new structures to be earthquake resistant,and finally, how to cope with earthquake damage and restore a city to normal functioning. Such efforts are in progressin both countries, but unfortunately, the language barrier interferes with the free flow of information between China andthe Untied States. It would be mutually beneficial if some means could be developed to promote the exchangeof information across the Pacific Ocean. This new journal has been established for this purpose and its success willbe an important step in promoting earthquake engineering in China and the United States. 相似文献
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《国际泥沙研究》2014,(4)
正President:Giampaolo Di Silvio,Italy Vice Presidents:Ulrich C.E.Zanke,Germany Zhao-yin Wang,China The World Association for Sedimentation and Erosion Research(WASER),inaugurated on Oct.19,2004,is an independent non-governmental,non-profit organization.The mission of WASER is to promote international co-operation on the study 相似文献
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JianCheng Shi 《中国科学:地球科学(英文版)》2014,57(10):2281-2282
正Global Change includes climate change and other environmental changes caused by the joint interaction among various layers of Earth. From the positive side, global change provides new opportunities to human and other living forms on Earth. In the meantime, it creates tremendous challenges and negative impact. At present, the negative impacts have reached all primary processes of the global ecosystem and every aspect of human society, especially causing degradation of the ecosystem. For instance, intensive deforestation causes decline of biodiversity; global warming causes sea level rise and increases 相似文献