欢迎来到牛牛题库网 牛牛题库官网
logo

未知题型

背景资料
某城市南郊雨水泵站工程临近大治河,大治河常水位为+3.00m,雨水泵站和进水管道连接处的管内底标高为-4.00m。雨水泵房地下部分采用沉井法施工,进水管为3m×2m×10m(宽×高×长)现浇钢筋混凝土箱涵,基坑采用拉森钢板桩围护。设计对雨水泵房和进水管道的混凝土质量提出了防裂、抗渗要求,项目部为此制定了如下针对性技术措施:(1)集料级配、含泥量符合规范要求,水泥外加剂合格;(2)配合比设计中控制水泥和水的用量,适当提高水灰比,含气量满足规范要求;(3)混凝土浇筑振捣密实,不漏振,不过振;(4)及时养护,保证养护时间及质量。项目部还制定了进水管道施工降水方案和深基坑开挖安全专项方案。
写出进水管道基坑降水井布置形式和降水深度要求。

A.00m,雨水泵站和进水管道连接处的管内底标高为-4.00m。雨水泵房地下部分采用沉井法施工,进水管为3m×2m×10m(宽×高×长)现浇钢筋混凝土箱涵,基坑采用拉森钢板桩围护。设计对雨水泵房和进水管道的混凝土质量提出了防裂、抗渗要求,项目部为此制定了如下针对性技术措施:(1)集料级配、含泥量符合规范要求,水泥外加剂合格;(2)配合比设计中控制水泥和水的用量,适当提高水灰比,含气量满足规范要求;(3)混凝土浇筑振捣密实,不漏振,不过振;(4)及时养护,保证养护时间及质量。项目部还制定了进水管道施工降水方案和深基坑开挖安全专项方案。
写出进水管道基坑降水井布置形式和降水深度要求。
【参考答案】

根据本工程特点采用条形基坑降水因基坑较宽采用两侧布置降水深度至坑底0.5-1.0米。
根据本工程特点,采用条形基......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)

点击查看答案

相关考题

未知题型
It is a great pleasure for me to welcome you to this meeting on such an important issue as science, information and society.
Today, science and information are opening up new horizons for human development. They do so through the exchange of scientific knowledge, the expansion of education and training, and the promotion of creativity and intercultural dialoguE.
Our organization is required therefore to help enlarge the spread of science and information through better education.
Yet science education does not take place only in universities and institutions of higher education. An early start must be made if we are to increase the numbers of students who are interested in pursuing a scientific career.
The uneven distribution of science and information between the industrialized and developing countries also raises concerns. According to a UN Report, industrialized countries, with only 15% of the world's population, are home to 88% of all Internet users. Less than 1% of people in South Asia are online, even though it is home to one-fifth of the world's population, The situation is even worse in AfricA.There are only one million Internet users on the entire continent whereas in the UK alone there are 10.5 million. In other words, capacity-building is vital for the developing world if they are to become knowledge societies.
These are some of the key issues that I hope you will discuss during the upcoming meeting. In particular, I am keen to hear your views on how this meeting can make a difference and, indeed, how science and information can make a difference in building knowledge societies.
Thank you.
微信小程序免费搜题
微信扫一扫,加关注免费搜题

微信扫一扫,加关注免费搜题