浅谈试验检测对保证工程公路隧道质量的重要性

公路隧道施工试验检测工作是隧道工程建设中不可缺少的重要部分。针对隧道工程质量检测的重点,结合实际工作经验,对公路隧道出现的不同程度的质量问题做了总结和阐述,以其为指导和评定公路工程实践提供科学的检测结论。     

公路隧道工程建设质量管理

在借鉴现有相关行业规范、规程的基础上,研究了公路隧道质量检测与评价体系。将公路隧道的工程质量检测分为材料、施工、竣工和运营4个子系统,分别给出其检测内容、检测方法和评价指标,以及相关质量检测表格,进而用Delphi语言研制了公路隧道工程质量检测的计算机管理系统(IMSHTQ)。实现了公路隧道工程建设质量管理的信息化和数字化,为公路隧道工程质量检测体系的建立提供了技术储备。     

隧道衬砌质量检测技术及质量缺陷处治

根据公路隧道的建设实践 ,系统地介绍了隧道质量检测技术及质量缺陷的处治方法 ,概括了各种检测方法的适用性和优缺点。重点论述了探地雷达的工作原理以及有效、快捷、简便的无损检测手段在宏观控制隧道工程质量、针对性地采取措施和消除工程质量隐患方面的应用可行性。结合实例说明隧道衬砌质量无损检测结果的可靠性 ,并介绍隧道衬砌质量缺陷处治方法     

强化水利水电工程质量检测提升工程质量的评定水平

水利水电工程质量检测是质量监督、质量检查和质量评定、验收的重要手段。只有完善质量检测机构建设,才能全面、客观、准确地反映水利水电工程质量所达到的真实水平,以便正确地评价工程质量,从而提高工程质量管理水平,促进工程质量的提高。本文结合一个工程实例,阐述了水利水电工程质量检测的意义、方法、特点以及在工程质量评定中的作用。     

浅谈公路隧道施工质量控制

本文介绍了公路隧道施工过程中的几个重要工序的质量控制。指出现阶段我们仍需要进一步总结、研究,提出一系列适应公路隧道要求的有效的质量检测方法和工程质量检验评价指标,形成一套系统的公路隧道质量控制体系。     

G227线扁张段施工监理体会

G227线扁张段公路改建工程是在我省加大基础设施投资,加快公路建设的新形势下开工建设的一条线形指标较高的二级公路。甘肃新科监理事务所受建设单位委托承担了该项目的工程施工监理任务。该工程于1998年6月28日正式开工至1999年11月30日路基路面主体工程全部完工并交付使用。交工验收建设项目工程质量评分为90.22分;质量等级为优良;位列99年度9个交工验收项目第一。该条公路改建是张掖人民企盼已久的重点工程。该路的建成不仅拉动了地方产业的大力发展,更重要的是将促进地方经济的腾飞,加强甘青两省经贸往来将起到巨大的作用,逐步改…     

“公路桥梁检测评定加固及养护管理技术”研究通过审核

“公路桥梁检测评定加固及养护管理技术”研究已通过交通部审核,推荐申报国家科学技术进步奖。 “公路桥梁检测评定加固及养护管理技术”研究攻克了桥梁结构技术状况与使用功能评定、质量与耐久性检测评价、旧桥检算与承载力评定、加固设计理论与方法、加固工程质量检评与评价体系等方面的多项世界性技术难题;创建了桥梁承载力检测评定方法与参数体系;提出了桥梁技术状况与使用功能评定方法;     

论高速公路施工测量

着重阐述了公路施工中开工前、施工组合设计、施工中、中间交工验收四个阶段的测量工作重点程序、方法及应注意的问题。     

工程质量控制与内业资料管理

论述了工程质量控制的概念和施工准备阶段、施工阶段、交工验收阶段工程质量控制的主要内容，详细介绍了施工资料的内容及其管理，指出工程质量控制和对施工资料进行规范化、标准化管理，体现了企业的技术和管理水平，有利于提升企业的市场竞争能力，是我国工程建设质量管理改革形势的需要。     

探地雷达在公路隧道检测中的应用

公路隧道在开挖施工过程中,主要是依据隧道勘察资料提供的围岩类别进行.但由于勘探点少,其围岩类别的划分可能与实际情况有差异.为使隧道施工能顺利进行,确保隧道的工程质量,可用地质雷达法进行超前预报,对初衬、二衬的施工质量进行检测.为此,介绍探地雷达的工作基本原理,并通过工程实例,进一步说明探地雷达在公路隧道工程质量检测的应用效果.     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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