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121.
本文简要介绍泉州市地震局依靠各级政府、有关部门和全社会的共同努力 ,以落实地震应急预案为楔机促进“预、防、救”三大体系工全面发展的工作经验 :一、以落实《地震应急预案》为抓手 ,争取项目 ,以项目带动一切 ;二、结合社会转型全面加大防震减灾知识宣传力度 ;三、不以经费的来源划分你我 ,动员全社会的力量建立健全预警应急机制。  相似文献   
122.
Based on the existing Land Surface Physical Process Models(Deardorff, Dickinson, LIU, Noilhan, Seller, ZHAO), a Comprehensive Land Surface Physical Process Model (CLSPPM) is developed by considering the different physical processes of the earth‘s surface-vegetation-atmosphere system more completely. Compared with SiB and BATS, which are famous for their detailed parameterizations of physical variables, this simplified model is more convenient and saves much more computation time. Though simple, the feas...  相似文献   
123.
地下厂房洞室群岩爆趋势综合预测方法   总被引:9,自引:0,他引:9  
以拉西瓦水电站地下厂房洞室群原设计方案为例,基于其赋存地质条件调研结果和岩爆产生基本条件,对岩爆趋势进行宏观预测;并结合研究区其他高地应力现象,建立了岩爆预测类比判据。进而基于厂房开挖后二次应力场数值计算结果,以所建判据圈定了岩爆可能发生部位及强烈程度。结果表明,将宏观判据与类比判据结合的岩爆综合预测方法,考虑因素全面,也尊重了研究区实际情况,因而合理可行。  相似文献   
124.
岩质高边坡岩体变形参数及松弛带厚度研究   总被引:10,自引:0,他引:10  
预测岩质高边坡开挖后岩体变形模量的变化及松弛带厚度,是分析岩质高边坡在开挖后变形(位移)和作好防护设计的重要资料,运用波动力学关于平均应力与体积模量、岩体纵波速度与弹性模量、变形模量间的关系,通过部分实测资料及边坡应力场有限元分析的资料,分别建立了纵波速度与岩体变形模、岩体应力间的关系,研究了开挖边坡岩体变形模量的变化,预测了岩体松弛带的厚度。  相似文献   
125.
Norbert I. K 《冰川冻土》2004,26(Z1):310-318
The exploration of ice sheets by melting vertical holes into the ground has some tradition in terrestrial glaciology. Such probes have been used since the 1960's to investigate the vertical structure of the ice in Greenland and Antarctica and in alpine glaciers. In this paper we look into the possibility to develop similar devices for use on extraterrestrial icy bodies, like e.g. the polar areas on Mars or the icy satellites of the outer solar system. We report on some basic experiments performed in the cryo-vacuum laboratory of the Space Research Institute of the Austrian Academy of Sciences, Graz. In these experiments the penetration of a simple melting probe into compact and porous water ice (with a snow-like texture) was monitored, both under vacuum conditions and under air pressure. The observed penetration speeds for a given power supply are compared with a simple mathematical model. We conclude that a miniature melting probe with small overall dimensions and a reasonable power demand could well be part of the payload of a future planetary mission, for example to the poles of Mars. Such missions are currently under discussion in several space agencies. Moreover such probes could also e? ectively be used in terrestrial environments. A possible design is presented at the end of the paper.  相似文献   
126.
用激光 -荧光显微镜等有机岩石学方法 ,挑选样品中有明显生、排烃现象的碳酸盐岩 ,再以测定的这类碳酸盐岩的有机碳含量为依据 ,确定本区高成熟碳酸盐气源岩残余有机碳的下限指标用 0 .13%~ 0 .14 %比较合理。根据碳酸盐岩储层孔隙中充填沥青和皮膜状残余沥青的分布和含量 ,论证了陕参 1井等奥陶系碳酸盐岩地层在地质历史中 ,存在若干油气有效储层。采用连续升温 ,步进取样的热模拟实验方法 ,揭示了本区煤与碳酸盐岩干酪根随热演化作用增强 ,烃类气体产物的干燥系数增大 ,δ1 3C1 、δ1 3C2 明显变重的规律 ,并根据样品实验结果推算 ,本区石炭系—二叠系煤最大生气阶段的δ1 3C1 应为 - 2 7‰~ - 2 8‰ ,碳酸盐岩最大生气阶段的δ1 3C1 应为- 31.7‰~ - 33‰。在气源成因判识中 ,根据主生气期阶段对天然气成藏储聚的贡献最大、甲烷碳同位素较重以及长庆气田风化壳气藏天然气δ1 3C1 重值区并不与石炭系—二叠系煤的镜质组反射率高值区匹配的现象等进行气源判识 ,认为长庆奥陶系风化壳气藏 ,具有下古生界海相碳酸盐岩气与上古生界石炭系—二叠系煤成气的混源成因  相似文献   
127.
Understanding our star, the Sun, is of fundamental interest for life on Earth. In this paper, the status of knowledge in solar physics of roughly two decades ago is summarised, and the most recent developments in this very active field are shown, many of them achieved by means of space based missions. The Sun–Earth connection is described and, finally, an outlook on future solar research is given.  相似文献   
128.
Kela 2 Gas Field, with high formation pressure (74.35MPa), high pressure coefficient (2.022) and difficulty of potential test and evaluation, is the largest integrated proved dry gas reservoir in China so far and the principal source for West-East Gas Development Project. In order to correctly evaluate the elastic-plastic deformation of rocks caused by the pressure decline during production, some researches, as the experiment on reservoir sensitivity to stress of gas filed with abnormal high pressure, are made. By testing the rock mechanic properties, porosities and permeabilities at different temperature and pressure of 342 core samples from 5 wells in this area, the variations of petro-physical properties at changing pressure are analyzed, and the applicable inspection relationship is concluded. The average productivity curve with the reservoir sensitivity to stress is plotted on the basis of the research, integrated with the field-wide productivity equation. The knowledge lays a foundation for the gas well productivity evaluation in the field and the gas field development plan, and provides effective techniques and measures for basic research on the development of similar gas fields.  相似文献   
129.
Takashi Ono 《冰川冻土》2004,26(Z1):64-69
Serious failure on the slope of rock ground can be caused by a cyclic action of freezing and thawing in the cold regions. The frost susceptibility and the effect of freezing and thawing onthe rock material, however, have not been well investigated. In order to find out the freezing effect on the rock materials, mortar specimens are frozen as a pseudo-rock material under the constant rate of freezing by means of controlling the temperature of both ends of specimen. The freezing process is given one-dimensionally to the cylindrical samples in the laboratory to simulate the in-situ freezing phenomena in the natural ground. Formation of ice lens, frost heave and water intake during freezing process are observed on the mortar specimen under constant freezing rate, which probably causes cracks or large deformation in the real rock ground. The values of the velocity of elastic wave propagation are compared before and after freezing process to estimate the degree of weathering due to freezing and thawing.  相似文献   
130.
铝钛柱撑改性膨润土处理两种模拟废水的实验研究   总被引:10,自引:1,他引:10  
以钠基膨润土为原料制备了铝钛无机柱撑、铝钛有机柱撑改性膨润土,确定了改性膨润土的最佳铝钛比和铝土比,并将其应用于模拟废水、化学实验室废水的处理。与原土进行比较,探讨了用量、pH值、搅拌时间等对COD去除率、色度去除率、浊度去除率的影响,通过正交实验对实验条件进行了优化。结果表明:有机柱撑改性膨润土、无机柱撑改性膨润土对废水的处理效果均明显好于原土,对废水色度、浊度的去除率均大于93%;对废水COD的去除效果,有机柱撑改性膨润土比无机柱撑改性膨润土有较大提高,去除率最高达66.31%,结果令人满意。  相似文献   
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