Description

"Zhan Tianyou" PPT courseware 11

Review the content of the text: What is this text mainly about?

Zhan Tianyou supported the construction of the first Beijing-Zhangjiakou Railway designed and constructed entirely by Chinese engineering and technical personnel.

think:

Read the text silently and think: What kind of person is Zhan Tianyou? Outline relevant statements and tell us what you learned from these statements? Make notes.

(1) Survey line

Zhan Tianyou was not afraid of difficulties or ridicule. He resolutely accepted the task and immediately started surveying the line. Wherever mountains need to be opened, where bridges need to be built, where steep slopes need to be leveled, and where curvatures need to be reduced, all must be surveyed and carefully calculated.

Zhan Tianyou often encourages the staff: "Our work must first be precise and cannot be sloppy. 'Probably' and 'approximately' should not come from the mouths of engineering staff."

He personally led the students and workers, carried the benchmark and carried the theodolite on his back to fix and survey the cliffs. Outside the fortress, the wind is often howling, the sky is full of yellow sand, and there is a danger of falling into a deep valley if you are not careful. No matter how bad the conditions were, Zhan Tianyou always insisted on working in the field. During the day, he traveled over mountains and ridges to survey routes; at night, he drew and calculated under an oil lamp. In order to find a suitable route, he often consulted local farmers.

(2) Digging tunnels

The railway has to pass through many high mountains and has to dig tunnels. Among them, the Juyongguan Tunnel and Badaling Tunnel are the most arduous projects. Juyongguan has high mountains and thick rock formations, so Zhan Tianyou decided to dig in from both ends to the middle at the same time. The spring water from the top of the mountain seeped down, and the tunnel was filled with mud. There was no water pump on the construction site, so Zhan Tianyou took the lead with a bucket to drain the water. He often ate and lived with the workers and never left the construction site. The Badaling Tunnel is more than 1,100 meters long, three times as long as the Juyongguan Tunnel. He discussed with the old workers and decided to adopt the central well drilling method. First dig a shaft from the top of the mountain, and then dig it to both ends. Construction of both ends is also done at the same time, which shortens the construction period by half.

(3) Design circuit

The railway passes near Qinglong Bridge and the slope is particularly steep. How can a train climb such a slope? Zhan Tianyou designed a "herringbone" route along the mountain. When the northbound train reaches the south entrance, it uses two locomotives, one pulling in front and one pushing in the back. After passing the Qinglong Bridge, the train heads northeast. After passing the fork in the "herringbone" line, it reverses. The locomotive that originally pushed pulls, and the locomotive that originally pulled pushes, causing the train to turn northwest. In this way, it is easier for the train to go up the mountain. Much more.

Little pen practice

What do you want to say to Zhan Tianyou? Follow the example.

Zhan Tianyou, you... ..., you are really an outstanding engineer.

Zhan Tianyou, you... ..., your patriotism is admirable!

File Info

Update Time: 2024-11-25

This template belongs to Chinese courseware Hebei Education Edition Fifth Grade Chinese Volume 2 industry PPT template

"Zhan Tianyou" PPT courseware 11 Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!

Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Zhan Tianyou" PPT courseware 11 is enough.

How to use the Windows system template

Directly decompress the file and use it with office or wps

How to use the Mac system template

Directly decompress the file and use it Office or wps can be used

Notice

Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com

"Zhan Tianyou" PPT courseware 11, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.

(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)

Zhan Tianyou ppt

Preview

菜单

"Zhan Tianyou" PPT courseware 11