GPS系统在隧道测量中的应用探究

GPS（全球定位系统）是信息产业技术时代的新兴科技产物,它具备精度高、测量准确、速度快、效率高等实用性特点,并被广泛应用在诸多产业化研究领域,如国防军事、工程测绘、大地测量、隧道工程中。文章首先分析GPS系统在隧道测量中的优点,进而结合经验阐述了在工程实践中应用GPS测量的体会。     

成都典型泥岩地层盾构施工管片上浮原因分析以及控制技术措施

随着盾构法施工技术在我国城市地铁施工中的快速发展,使得盾构法被不断的应用到各种典型的泥岩地层施工中。文章结合成都泥岩地层的特征,以成都地铁2号线东延线工程为例,对典型泥岩地层盾构施工管片上浮的原因及控制技术措施进行了探讨。     

山区高速公路隧道事故预防机制探析

隧道作为山区高速公路的咽喉,其因内部空间狭小,隧道内外光线差异较大,加之驾驶员恐洞心理以及恶劣天气等因素的影响,都是造成隧道内交通事故发生的重要原因。文章以京沪高速公路济南至莱芜段高速公路为例,对隧道内交通事故发生的原因进行了分析,对隧道内事故预防措施进行了探索。     

Sow One Seed, Gain One More Life

The meadow on the highland is as broad as an ocean, yet it is also as quiet as a painting, without the limitation of a frame. It seems more natural and lively than a painting. It is as simple as the clear eyes of a Tibetan sheep, reflecting the rippling green grass and the scent of the soil as carried by the breeze. This scent followed me all the way as I followed spring＇s progress across the highland and as we drove deeper into the wide prairie in the County of Hongyuan. A Tunnel Enclosure in Camouflaged Clothing On average, Hongyuan is more than 3600 meters above sea level and is mainly involved in animal husbandry. It is the only county largely inhabited by Tibetans in the Prefecture of Aba. There is a vast area （777,200 ha.） of lush native grassland, 91.8 percent of the whole county. ＂Tashi Delek, welcome my reporter＂ said Tsepudan, Chairman of the Karlama Village Committee in the Township Village of Achok in the County of Hongyuan. He greeted me with smiles. He looked tall and strong in his traditional Tibetan robe, with a large-screen cell phone at his waist. ＂What＇s the fence for＂ I asked in curiosity. Before me was a huge fenced paddock. ＂A tunnel enclosure, they helped us build it,＂ said Tsepudan, pointing towards our companions （Professor Li Jian, and Professor Tang Cheng from the Southwest University for Nationalities, as well as Mr. Liu Gang from the Sichuan Prairie Institute）. Made of steel, the tunnel enclosure is shaped in a hexagon, 10 meters long. At first sight, it seems to be without any technical content. Actually, it contains a certain delicacy in its awkwardness. It saves a lot of labor and time when it is used to give an injection or medicine, or shear sheep, weighs something, or transport yaks and sheep. The Southwest University for Nationalities, the Sichuan Prairie Institute and local herdsmen produced it together, including its design, site selection and construction. Eight national     

汉朝人的幸福指数

如果有人问我,让你穿越时空隧道,回到封建社会,你愿意作哪个朝代的老百姓？我会很干脆地回答：＂汉朝!＂ 经济水平是衡量老百姓幸福指数的一个硬指标。＂文景之治＂时期的大汉王朝是很有钱的。当时的国家富裕到一个什么程度呢？早在初中学历史时 ,     

城市轨道交通建设对沿线古建(构)筑影响分析及保护对策研究

城市轨道交通建设对周围地层和周边古建(构)筑物的影响是不可避免的。通过分析隧道盾构施工对周围土体的影响因素及处于影响区域内古建(构)筑因地层扰动带来的安全风险,针对性地研究并提出盾构施工对文物建(构)筑的保护和控制措施,尽可能规避和减少盾构施工对古建(构)筑物的扰动和损害,以保证文物安全,实现城市建设与历史文化资源保护的协调和可持续发展。     

如何让学生在课堂上活起来

正《小学语文课程标准》指出:学生是语文学习的主人。语文教学应激发学生的学习兴趣,注重培养学生自主学习的意识和习惯,为学生创设良好的自主学习情境,尊重学生的个体差异,鼓励学生选择适合自己的学习方式。这项论述为我们的语文教学提供了正确导向,预示着我们的教育理念要发生转变,我们的课堂教学将改变过去的"满堂灌"为主要模式,以应试教育为主要目的的教学现状,取而代之的是激发学生求知欲,开启学生智慧之光,充满生机活力的现代课堂教学。语文课堂教学要焕发生命活力,就要让学生"动起来",我们教师教学方式要"活起来",这样才能使课堂教     

百年小火车爬上少女峰

传奇的百年小火车瑞士大半个国家都被阿尔卑斯山脉环绕。阿尔卑斯山终年积雪,景色怡人。其中少女峰(Jungfraujoch)被称为阿尔卑斯山脉中的皇后,是欧洲的最高峰之一,位于因特拉肯(Interlaken)     

隧道施工常见不良地质及处理方法

隧道工程施工过程中常常会遇到一些不良地质环境,这些不良地质会对隧道的稳定性产生重要影响,很容易出现各种突发性工程事故,在很大程度上增加了隧道施工建设难度。文章主要就隧道施工常见的不良地质问题进行分析,并且提出了相应的处理方法。     

在土耳其穿越时空——土耳其驻华使馆文化新闻处参赞欧胜瑞专访

土耳其源远流长的历史让你能在这里看到各个时代的历史遗迹,世界七大奇迹有两个位于这里。从古希腊到古罗马,从拜占庭到奥斯曼帝国,一路走来就是不知不觉地在时空隧道里穿梭。