What are the test sites for tunnel engineering?

After a whole day of study , The examination site of tunnel engineering is finally clear , Give yourself a compliment What are the test sites for Tunnel Engineering ？
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Tunnel engineering examination site

below , Specifically speaking .

1. Nine geological backgrounds

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1.1 Water rich weak surrounding rock

1.2 Karst

1.3 Aeolian sand and water bearing sand layer

The examination site is relatively simple , The exam is unlikely , No memory .

1.4 Gas tunnel

1.5 Rockburst

1.6 Extruded surrounding rock

1.7 Expansive rock

1.8 Loess

Mainly waterproof 、 Drainage and precipitation , Adopt three steps reserved core soil method for construction

1.9 Plateau frozen soil

2. Advance geological prediction

2.1 Purpose and content

2.2 Method

2.3 Procedure and division of labor

3. Monitoring measurement

3.1 Surrounding rock classification

3.2 Monitoring measurement purpose

3.3 Necessary items and distribution principles

3.4 Monitoring frequency

3.5 Management countermeasures

4. Three principles for entering the hole

5. Excavation of main hole

5.1 Excavation method

5.2 Drilling and blasting excavation

5.2.1 Blast hole depth and charging method

5.2.2 Detonation sequence

5.2.3 Excavation method

6. Safe step

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7. Support

8. Ventilation and slag discharge

Ventilation and slag discharge are related to the length of the tunnel

8.1 ventilation

There are two ventilation methods for gas tunnels ：

• Press in type
• Roadway type （ The tunnel length is greater than 2000m）

8.2 dustproof

8.2 Slag out

The gas tunnel is transported by rail

9. Waterproof and drainage

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10. Existing tunnel