南江县内某潜在不稳定斜坡治理研究

以南江县内某潜在不稳定斜坡为例,在研究不稳定斜坡的地质背景和基本特征基础上,采用定性与定量分析相结合的方法对潜在不稳定斜坡的稳定性进行计算分析,得出了该潜在不稳定斜坡在大气降雨等外营力地质作用影响下处于基本稳定—欠稳定状态,其松动岩块易发生滑坡、零星崩落掉块或滑塌的可能性大,必须对不稳定斜坡进行治理,提出了对潜在不稳定斜坡进行支护的措施的建议。     

保山市隆阳区潜在不稳定斜坡稳定性分析与治理方案

以保山市隆阳区某潜在不稳定斜坡为例,在研究区地质勘查资料的基础上,通过对瓦窑镇潜在不稳定斜坡的地质概况、特征、变形特征以及成因机理,采用定性与定量相结合的方法对潜在不稳定斜坡的稳定性进行计算和稳定性分析、评价,得出该潜在不稳定斜坡处于欠稳定-不稳定状态,采用截排水与加筋式重力挡土墙进行治理。     

成县张旗村不稳定斜坡特征及防治对策

本论述根据野外实际调查,对成县张旗村不稳定斜坡的类型、规模、时空分布等特征进行了归纳,并对其影响因素进行了分析,对该不稳定斜坡提出防治对策。     

顺层变质岩坡稳定性评价与生态治理方案

为了探究鄂西北变质岩区不稳定斜坡滑崩地质灾害的成因机制和生态治理模式,本文以三用塘顺层变质岩不稳定斜坡为研究对象,在查明灾害体地质与变形特征的基础上,分析了其可能的破坏模式与主要影响因素,深入探究了顺层变质岩坡渐进式变形破坏的成因机理。采用极限平衡等方法对不稳定斜坡进行了稳定性分析评价,结果表明,该斜坡体处于不稳定状态。基于地质灾害生态治理理念,提出了削方整形、护脚墙、格构锚固、截排水沟、生态绿化与监测等综合防治措施。通过工程实施及效果监测表明：该治理方案不仅有效地消除了三用塘滑崩地质灾害安全问题,而且取得了良好的环境绿化与美化效果。其综合防治措施,特别是将地质灾害防治与生态绿化融为一体的生态治理模式可为同类顺层变质岩不稳定斜坡的加固与坡面防护提供借鉴。     

花溪区青岩镇新哨村竹林湾不稳定斜坡成因机制研究

研究区地处黔中腹地,出露地层主要为第四系残坡积层、三叠系中统新苑组(T₂x),通过对不稳定斜坡地质背景、变形特征、影响因素研究,探讨不稳定斜坡成因机制,为地质灾害防治提供依据。研究结果表明,不稳定斜坡堆积体呈“舌”形状特征,成因机制主要为不利岩土体组合条件,在受暴雨等外在不利因素影响下发生变形滑动。     

贵州尖山营变形破坏特征及位移预测分析

为了深入研究尖山营不稳定斜坡的变形破坏特征与位移变化特征,通过对历史影像的观测与现场监测数据进行详细分析,结合时间序列分析方法,将地表合位移进行分解为趋势项和周期项,运用MATLAB软件对其位移函数进行分开拟合,将趋势项拟合函数与周期项拟合函数相加得到合位移预测函数。结果表明:通过2016—2020年影像资料对比,尖山营的崩塌堆积体面积的越来越大,变形体的后缘边界正在越来越后进行扩展,越靠北侧的部位垮塌的面积越来越大,裂缝也越来越多,逐渐演化成尖山营不稳定斜坡;尖山营不稳定斜坡目前处于等速蠕变阶段,位移变化受到煤层采动影响较大;合位移预测模型得到的预测数据与实测数据的贴合度达到0.999。可见通过时间序列分析方法得到的预测模型能够很好的预测尖山营不稳定斜坡位移变化。     

不稳定斜坡的整治实例

不稳定斜坡可以理解为处于临界状态即将失稳的斜坡。不稳定斜坡与滑坡最大的区别在于：滑坡有明显的滑动面,而不稳定斜坡则不一定有。本实例介绍了某黄土地区不稳定斜坡的具体整治措施设计,类似工程可作为借鉴。     

不稳定斜坡治理实例

针对不稳定斜坡的特点,介绍了不稳定斜坡治理方案的选择、斜坡总体稳定性验算以及施工保障等技术措施.     

某不稳定斜坡体变形破坏特征分析

某不稳定斜坡体位于丹棱县内.本文以该斜坡体为研究对象,分析了其变形破坏特征,对于掌握该斜坡变形破坏机制具有重要意义.     

强降雨事件下高盖度斜坡孕育灾害机理研究

基于对高盖度斜坡进行调查、分析、研究,得出高盖度斜坡发育有强大的大孔隙系统.在强降雨事件下,雨水通过大孔隙系统形成优先流,继而发育孔隙堵塞带以形成局部隔水屏障,最终形成上层滞水.植被护坡原理在于其根系锚固地表土体,但根系有效锚固深度一般介于地表以下1~3 m,浅层滑坡的滑动面一般都在地表以下3~4 m,故其锚固效果有限.对于高盖度斜坡,在强降雨事件下,由于水力耦合作用,将会形成斜坡群滑现象甚至诱发泥石流等地质灾害.系统研究强降雨条件下斜坡盖度与斜坡稳定之间的关系不仅可以强化斜坡稳定理论,同时也为区域性山地灾害的预警提供科学依据.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with