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What is tunnel logging?

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What is tunnel logging?

A method of maintaining a continuous log of the excavated face by inspectors is described and a number of log sheets for different geological terrains presented. These are used together with a geologist’s log of more complex zones to compile an engineering geological record of the project. (

What is the tunnel face?

In tunnel construction, the tunnel face is defined as the inside working face or the shaft bottom of an excavation from which boring is carried out. During the boring operation, soil is removed from the tunnel face to further advance the tunnel being constructed.

What is face mapping in geology?

Face mapping is a simple but invaluable means of geological and geotechnical data acquisition whereby intact rock properties, rock mass properties, discontinuity properties, and structural orientation can be assessed.

How do I check my VPN tunnel logs in Palo Alto?

View Tunnel Information in Logs

  1. Select. Monitor. Logs.
  2. Select. Traffic. ,
  3. For a log entry, click the Detailed Log View ( ).
  4. In the Flags window, see if the. Tunnel Inspected. flag is checked.
  5. If you are viewing the log for an inside session that is Tunnel Inspected, click the. View Parent Session.

How do I check my VPN tunnel status in Palo Alto?

View the Status of the Tunnels

  1. Select. Network. IPSec Tunnels. .
  2. Tunnel Status. . Green indicates a valid IPSec SA tunnel. Red indicates that IPSec SA is not available or has expired.
  3. IKE Gateway Status. . Green indicates a valid IKE phase-1 SA.
  4. Tunnel Interface Status. . Green indicates that the tunnel interface is up.

What is tunnel stability?

The objective of the TUNNEL STABILITY project is to improve the safety of rock tunnels through improved design procedures and equipment and methods to identify potential weak rock zones, and also to develop methods to monitor the tunnels during their lifetime in operation.

What is the purpose of tunneling?

Tunnels avoid disturbing or interfering with surface life and traffic during construction. Tunnels prove to be cheaper than bridges or open cuts to carry public utility services like water, sewer and gas.

How do I reset my VPN tunnel in Palo Alto?

  1. Select. Network. IPSec Tunnels. and select the tunnel you want to refresh or restart.
  2. In the row for that tunnel, under the Status column, click. Tunnel Info. .
  3. At the bottom of the Tunnel Info screen, click the action you want: Refresh. —Updates the onscreen statistics. Restart.

How do I delete old Palo Alto logs?

Clear logs via the WebGUI To clear the logs through the WebGUI. Navigate to Device > Log Setting > Manage Logs. Click the link that corresponds to the log you would like to clear—traffic, threat, URL, data, configuration, system, HIP Match, Alarm.

How do I check my tunnel status?

Check the current status using the Amazon VPC console

  1. Sign in to the Amazon VPC console.
  2. In the navigation pane, under VPN Connections, choose VPN Connections.
  3. Select your VPN connection.
  4. Choose the Tunnel Details view.
  5. Review the Status of your VPN tunnel.
  6. If the tunnel status is UP, choose the Static Routes view.

What do you need to know about head race tunnel?

Practices in Planning, Design and Construction of Head Race Tunnel of a Hydroelectric Project. 1. Abstract—A channel/tunnel, which carries the water to the penstock/pressure shaft is called head race tunnel (HRT). It is necessary to know the general topography, geology of the area, state of stress and other mechanical properties of the strata.

Why are hydrophilic gaskets used on tunnel joints?

The movement of the base of excavation, or tunnel invert upwards, caused by the removal of confining pressure of the ground. A material which expands on contact with water. Hydrophilic gaskets are used on tunnel segment joints.

How is water removal carried out in a tunnel?

This method is typically used for shallow tunnels. Great care is required to ensure the walls of the excavation are well supported while the structure is installed. The removal of water from granular soils, it is normally carried out within an impermeable cut-off wall and by using well points.

When was the head race tunnel conference held?

Practices in Planning, Design and Construction of Head Race Tunnel of a Hydroelectric Project. This paper has been selected for oral presentation as well as inclusion in the conference proceedings of the ICCCGE 2016 : 18th International Conference on Civil,Construction and Geological Engineering held in Toronto, Canada during June, 13-14, 2016.