Monday 6 January
The new project mentioned in the title is clearing the drainage pits on Stanway viaduct, more on this at the end of the blog. Otherwise it was back up to Stanton Yard this morning to do a bit more clearing up then down to Southam Lane to install the drain on the wing wall at Bridge 42.
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Stanton Yard, the old container is destined for the scrap heap
it's got terminal rust in the roof |
Down at Southam Lane, the first load of gabion stone is dropped into the abutment drain
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Bridge 42 down side abutment
(Photo: Roger) |
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| Bridge 42, down side low mileage wing wall |
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| Roger laying the Terram to wrap the drain pipe |
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| Dave and Nigel unloading the pipe bedding |
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The 100mm plastic drain pipe is weighted down with pipe bedding
and then the Terram is wrapped around the top |
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| Bridge 42 wing wall drain progressing |
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| Bridge 42 wing wall drain backfilled with pipe bedding stone |
We did some further investigation of the drain from the crest, the pipe running into the cess chamber is badly coated with calcite, about 50% pf the diameter has gone.
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| Bridge 42, Pipe from the crest |
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| Inside the crest pipe, calcite (Limescale) |
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Limescale is coating the side of the chamber
where water has run in through the rings |
Wednesday 8 January
Surveyors came in to do a topographical mapping of the cutting at Winchcombe, Andrew was in to escort them and ensure everything ran smoothly
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Datum point set up on Greet Bridge
(Photo: Andrew) |
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Working on the up side slope
(Photo: Andrew) |
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Measuring along the fault line at the crest
(Photo: Andrew) |
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Winchcombe Cutting up side slip area
(Photo: Andrew) |
Thursday 9 January
Out and about day, a quick look up a the River Isbourne and then down to Cheltenham to survey the drains on the down side crest at Hunting Butts. On the way back we went to Stanway Viaduct to have a look at the drainage pits that have been excavated by our contractors as part of the viaduct drainage upgrade works.
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Culvert 21A up side bank erosion control measures
The bank along the house garden will be protected in a later stage |
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| Culvert 21A toe drain outlet from Chicken Curve |
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| Culvert 21A up side headwall |
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| Culvert 21A up side, station cess drain outfall still to be completed |
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| River Isbourne downstream of the railway |
Work is starting on the down side, the right hand bank (the station side) has suffered most form the scour as the river moved from it's original straight line.
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| Culvert 21A River Isbourne down side |
We stopped off at Gotherington on the way to Cheltenham to have a look at the up side slip near Bridge 37. It seems to be stable at present, possibly waiting for the next rain
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| Up side toe drain chamber near Bridge 37 |
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| Up side fault north of Bridge 37, still at 1.5m |
There's a couple of drains along the down side crest between Evesham Road bridge and Hunting Butts. These drains are in a poor state following years of neglect. A section of pipe was replaced in August 2016, but more work is required before the new fencing is installed.
Most fascinating and interesting, a big job nevertheless! It is surprising that on a "main line" with heavy freights and fast passengers the contractor/s were permitted to use ash infill? Or is this a much later renewal?
ReplyDeletePowli Wilson
In a book describing the construction of the line it says that the embankments to the viaduct are built from "burnt soil" this is very likely to be the same material used to infill the arches.
DeleteNeal