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371.
文章在弹性力学和库仑-摩尔破裂理论基础上,用数学解析方法剖析三轴不等应力状态,以及三轴全拉、三轴全压和最大最小主应力一拉一压三种情况下,斜截面上剪应力与抗剪阻力之差——"剪切差函数"的极值。进而探讨了剪切破裂趋势面方向与三主应力轴,及岩石(体)内摩擦角φ和内聚力C的关系。给出了不同应力状态下发生剪切破裂面的可能方向。在全压状态下,剪切破裂趋势面与最大主压应力轴夹角γ=±(45°-φ/2),即共轭角χ=±(90°-φ)。在一拉一压状态下,±(45°-φ/2)≤γ≤±45°,具体数值视拉主应力与压主应力比值确定。以上三种不等主应力下的剪切破裂面都是平面,且平行于中间主应力轴。构造拉张力的存在是无可争议事实,通过一拉一压状态下剪切破裂面趋势面分析,给出了构造地质实践中为什么有时剪切面共轭角χ>±(90°-φ),甚至接近90°的理论分析。 相似文献
372.
E. Sh. Elizbarashvili R. Sh. Meskhiya M. E. Elizbarashvili L. D. Megrelidze 《Russian Meteorology and Hydrology》2009,34(12):838-842
The dynamics of frequency of warm and cold months for warm and cold periods of the year on the whole as well as for the ablation
period is studied for glaciers of the Greater Caucasus based on the analysis of maps on anomalies of monthly mean air temperatures
for the 1901–2000 period. A relation between the change in frequency of temperature anomalies and the glaciation area is established. 相似文献
373.
E. Sh. Elizbarashvili M. E. Elizbarashvili Sh. E. Elizbarashvili E. G. Khutsishvili N. Z. Chelidze 《Russian Meteorology and Hydrology》2016,41(11-12):770-772
The original method developed in the Voeikov Main Geophysical Observatory is used for assessing the potential of renewable energy resources of Georgia. The cumulative index of potential energy resources and their constituents (helio, wind, and water resources) are estimated quantitatively in conventional units for the regions of Georgia. The respective geoinformation maps are compiled. 相似文献
374.
HUANG Yongwei LIU Jiajun QUAN Chuanshun ZHU Wenfeng . First Institute of Geology Exploration of Heilongjiang Province Mudanjiang Heilongjiang China . School of Earth Sciences Resources China University of Geosciences Beijing . Sh ong Geologic Surveying Mapping Institute Jinan 《东北亚地学研究》2011,(2)
Sipingshan gold deposit is gold-bearing sillcalite in type. There only exist a few kinds of sulfide in the ore and it is lower in content. The gold degree is lower. Au is closely related to the Ag,Cu,Pb,As and Hg elements. The upper sillcalite has Eu and Ce negative anomaly,and the lower sillcalite has Eu positive anomaly. however,the hot spring cemented breccia and rhyolite porphyry have Eu negative anomaly;the S isotope component has deep-seated magmatic sulfur and terrestrial sulfate characteristic;and t... 相似文献
375.
E. Sh. Elizbarashvili M. R. Tatishvili M. E. Elizbarashvili Sh. E. Elizbarashvili R. Sh. Meskhiya 《Russian Meteorology and Hydrology》2013,38(4):234-238
Air temperature trends under conditions of global warming are studied using the observational data from 87 meteorological stations of Georgia for the period of 1936–2011. Plotted are the geographic information maps of the spatial structure of temperature variation rate. 相似文献
376.
377.
Sh. -S. O. Abdullaev Sh. G. Idarmachev M. M. Aliev I. A. Aliev A. G. Magomedov 《Journal of Volcanology and Seismology》2011,5(3):209-215
This paper is concerned with the variations of apparent resistivity for the period 2000–2005 as obtained by vertical direct-current
electrical sounding with an AB separation equal to 300 m. The site was the Dmitrovskoe oil-and-gas field, which is situated
on the western coast of the Caspian Sea in a seismic region of Dagestan. 相似文献
378.
N. Sh. Chen Ch. L. Yang W. Zhou F. Q. Wei Z. L. Li D. Han G. Sh. Hu 《Natural Hazards》2011,56(1):37-57
Debris flow with intermittent surges is a major natural hazard. Accurate estimation of the total volume of debris flow is
a challenge for academic researchers and engineering practitioners. This paper has proposed a new model for the total volume
estimation based on 15 years of observations in Jiangjia Valley, China, from 1987 to 2004. The model uses two input variables:
debris flow moving time and average surge peak discharge. The Weibull distribution formula is adopted to describe the relationship
between the debris flow surge peak discharge and its relative frequency. By integrating the Weibull function and two-point
curve fitting, the relationship between the maximum discharge and average surge peak discharge can be established. The total
debris flow volume is linked with the debris flow moving time and the average peak discharge. With statistical regression,
the debris flow moving time is derived from the debris flow total time. The proposed model has fitted very well with the validation
data and outperformed the existing models. This study has provided a new and more accurate way for estimating the total volume
of debris flows with intermittent surges in engineering practice. 相似文献
379.
380.
通过对黑龙江省嘉荫县乌拉嘎盆地内各地层单元的岩石组合、生物化石组合与时代和沉积环境的系统研究与厘定,并与孙吴-嘉荫盆地其他断陷以及松辽盆地进行对比.研究表明:乌拉嘎盆地中、新生代划分为3个构造层5个岩石地层单元,并对其空间展布与演化进行了恢复,填制区域地质图.乌拉嘎盆地表现为明显的3期不同性质的盆地叠合演化特点,其间由... 相似文献