Lec23 - University of California, Berkeley Civil...

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Spilings Bench Crown Invert University of California, Berkeley Professor Ken Johnson Civil Engineering 70 Engineering Geology Civil Engineering 70 Lecture 23 11/15/07 Tunnels o Used for Highways Railroads Water Resource systems Wastewater systems Hydropower projects Utility systems Storage Facilities Storage of pressurized gas and oil Temperature secure Concert Halls Tunnel Terminology Rock Dowel – Steel rods perpendicular the tunnel wall Spilings – Steel rods parallel to the tunnel wall Tunnel Support Systems Tunnel Support System o Wooden cribbing and or lagging o Steel supports o Rock bolts o Spilings Rock Bursts Lecture # 1 of 4 #/#/07 Written By Raymond Leung
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University of California, Berkeley Professor Ken Johnson Civil Engineering 70 Engineering Geology Explosion of the rock from not being able to contain itself Can be in the minimal pressure direction Lecture # 2 of 4 #/#/07 Written By Raymond Leung
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Lec23 - University of California, Berkeley Civil...

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