公路施工中面临的环境污染问题与防治措施

公路建设是促进经济发展的保证,但由于公路施工本身所特有的性质,公路施工项目对所在区域环境影响很大.因此,治理公路环境污染,最大限度地消除公路负面影响尤为重要.本文通过分析公路环境保护的内容,针对公路施工对环境污染的现象提出防治措施,以期通过本文的阐述充分认识在建工程对所在地区环境造成的危害,尽量减轻施工对环境的影响,促进工程建设与环境保护的和谐发展.     

公路滑坡形成的原因和防治措施研究

公路滑坡是公里工程中经常会遇到的问题,给公路工程的建设带来很大的不便和危害.公路滑坡的发生会使交通运输中断,给交通运输带来很大的不便,同时,严重威胁人民生命财产安全.本文从公路滑坡形成的原因出发,探析公路滑坡的防治措施.     

膨胀土路堤施工技术研究

膨胀土是一种具有特殊性质的土,对公路、铁路、水利等工程危害十分严重。正确判别膨胀土的性质,采取合理的施工措施,加强施工过程的检测控制,可以有效防止病害的发生。     

隧道不良地质段二衬与初支置换施工及经济效益分析

隧道作为控制公路工程的重要咽喉节点,直接影响着公路全线的通行效率和安全性。本文以某高速公路隧道衬砌病害处治施工项目为案例,通过阐述置换法的施工工艺和工程经济性指标,分析了隧道置换法在围岩衬砌病害处治中的实际效果。     

对公路岩质边坡失稳及防治的分析

针对公路岩质边坡失稳及防止,结合工程实例,在简要分析岩质边坡破坏形式的基础上,阐述了导致公路岩质边坡失稳的主要机理,并分析了公路岩质边坡失稳的评价标准,最后提出了相应的防治对策。得出公路岩质边坡失稳对公路行驶安全性严重的影响,需要通过科学合理的防治措施,才能限制公路岩质边坡失稳危害继续扩大的结论,希望对相关的单位有一定帮助。     

钻孔灌注桩用于公路软土地基施工研究

软土地基是公路施工常见通病,因软土层结构具有明显的脆弱性,对公路结构性能产生诸多功能性危害。新时期公路施工技术实现了优化转变,采用钻孔灌注桩处理软土地基问题取得良好效果,为公路现代化建设提供技术支撑。结合软土地基特点及其危害性,分析了软土路段公路主要病害形式,提出钻孔灌注桩用于软土地基处理的工艺方案。     

旧沥青路面评价与处治技术研究

在旧路改造中,如何对旧路破坏程度进行评价、采用什么方法进行改造是旧路改造过程中的首要任务,文章针对丹霍线公路改造工程,对旧沥青路面病害进行了调查,通过调查结果对道路的破坏程度进行了综合评价,针对不同路面损坏情况,给出不同处治方案.对旧路改造工程提供一些借鉴。     

山区斜坡湿软地基路基病害分析

我国西南地区公路位于山区斜坡湿软地基的路段,经常发生路基不均匀沉降、基底滑移沉陷、路堑边坡滑坡与坍塌等工程病害。随着公路交通事业的不断发展,越来越多的公路不可避免经过这种地段,为了保证路基稳定性、路面的结构完整性和道路良好的服务水平,有必要加强对山区斜坡湿软地基路基病害的研究。     

试论路桥工程预应力的应用及问题(提纲)

在现代公路桥梁建设施工中,预应力技术的运用提高桥梁的承载能力及使用寿命、促进了我国公路桥梁建设水平的提高.但是,在路桥工程预应力技术应用中,受技术控制、技术水平以及施工规划等因素影响,路桥工程的预应力结构极易发生裂缝等病害,进而影响路桥工程的施工质量及使用寿命.本文从预应力技术的分析入手,对路桥工程预应力的应用及问题进行了简要论述.     

浅谈公路工程建设对工程环境的影响及策略

公路作为国民经济建设的基础设施,给国民的出行带来了很大的便利,推动了沿线产业的发展。公路系统在给国民生活带来巨大变革的同时,其建设过程中及通车运营期间,对通过区域的环境产生强大而持久的影响。通过从自然与社会组成的大环境着眼,综合考虑公路建设的环境效益和社会效益,并进行减缓工程活动对环境不良影响的对策研究。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.