Melling Tunnel

Scantech International to undertake a cloud burst survey which is to be repeated at 3-month intervals for 18 months i.e. 7 cloud burst surveys required. Each survey is to be overlaid on all preceding surveys, represented by different colours for each survey, to inform any distortion of the lining. Survey sections to be presented in AutoCAD and PDF format. Delivery of the surveys to the RAM Structures Team to occur throughout the 18 months as this is a monitoring exercise. Present all sections within a single AutoCAD drawing file. Cross sections to be taken 500mm c/c in AutoCAD and PDF format between SM2 to SM5+10m. Examiner or Asset Engineer from NW Tunnel Team to attend site during the initial survey to determine whether the lining is over-stressed, and cracks or crushing are evident. 

Scantech International to undertake a cloud burst survey which is to be repeated at 3-month intervals for 18 months i.e. 7 cloud burst surveys required. Each survey is to be overlaid on all preceding surveys, represented by different colours for each survey, to inform any distortion of the lining. Survey sections to be presented in AutoCAD and PDF format. Delivery of the surveys to the RAM Structures Team to occur throughout the 18 months as this is a monitoring exercise. Present all sections within a single AutoCAD drawing file. Cross sections to be taken 500mm c/c in AutoCAD and PDF format between SM2 to SM5+10m. Examiner or Asset Engineer from NW Tunnel Team to attend site during the initial survey to determine whether the lining is over-stressed, and cracks or crushing are evident. 

Tab 16 to 19

Tab 20+13m to tab 21

Tab 49 to 51

Tab 52 to 53

Traverse to tab 53 and install sockets at these locations

Tab 16 to 19

Tab 20+13m to tab 21

Tab 49 to 51

Tab 52 to 53

P1 TO P12 1ST SECTION

P13 TO P19 2ND SECTION

P20 TO P24 3RD SECTION