Our trip to Thakurwadi, August 1992
While Mumbai is at sea level, Pune is at 1800 feet above sea level. The railway line climbs this height in a steep 'ghat' which is a steep incline of 28 Kms between Karjat and Lonavala. The incline is 1 in 33 in some places and is an formidable challenge for the railways. However the dedicated railwaymen of Central Railway, Mumbai division ensure over 100 daily movements in both direction in all weathers.
The Model Railway Society of Pune (MRSP) had gone to Thakurwadi in 1992 for a trip to see the ghat operations and particularly to see the 'service tunnel' between Thakurwadi and Nagnath.
|This is a rough map of the ghats between Mumbai & Pune. There are
three tracks between Lonavala and Karjat. The older two tracks go past
Thakurwadi, while the newer third line diverts at Monkey Hill and touches Nagnath on the
other face of the hill. All lines merge at Jambhrung cabin.
There are special procedures to prevent accidents in the ghat section.
The Down train climbs from Karjat at almost sea level to Lonavala through Khandala at 1800 feet above sea level with the help of banking WCG 2 locomotives. This prevents a coach rolling back in case of a coupling failure as well as to assist the leading loco which is at the limit of adhesion.
The Up train (descending !) stops at three 'catch sidings', which are tracks leading steeply into the hillface. If a train is runaway, and it does not stop at the designated signal for a minimum period, it would go on this track and be braked by the slope of the hill. Under normal circumstances, the Up train stops at Khandala, Monkey Hill, and at Thakurwadi (or Nagnath) for three minutes before being allowed to go on the main track. Thus there are signals, points and a cabin at these locations.
|This is a Pune WDM 2 coming from Jambrung cabin to Thakurwadi. It is
crossing the down main line onto the middle line (which can handle up or down traffic).
The Thakurwadi traction substation is towards on the right. Only light locomotives
are allowed to climb the ghats without a banking locomotive. Even a single coach train is
required to be banked to prevent a runaway in case of coupling failure during the climb.
|It is very hot and the air is still, the WDM 2 drivers work their loco
with the doors open. Local public uses the banking locos to travel from one point to
another. However they are not allowed in the cab, thus travelling on the buffer
beam. The building on the right is the police post guarding the traction
|There is a service tunnel which links TKW and top of the NAG catch siding.
This view is at the NAG end of the service tunnel. The service tunnel was used
during the construction of the 3rd line to carry the material from TKW side. As the
TKW substation powers all the three lines, the tunnel also carries the 1.5 KVDC OHE cable
to the NAG side. This can be seen on the left of the picture. The train (6012 Up Chennai-
Mumbai Express, I think) waits at NAG cabin during its mandatory halt.
|Normally the points are set so that the train would get diverted to the
catch siding. Only if the train stops for the 3 minute period do the points now allow the
train on the main line. This is a very simple yet effective method of ensuring safety
during descent in the steep Bhor ghats. Here the '12 Up' with the WCM 2 power is just
starting from NAG.
|Following the profile of the hill the train crawls down the ghats at 50
Km/h. At such steep grades, all that is required is for brakes to be released and the
train achieves its rated velocity within no time at all. The landscape is typical of the
rugged western ghats.
The WCM 2 power crossing our position.
Viraf, Apurva, Manish and Shyama (who took the picture) ride out the BFR !
There are three trains round the clock (1007 Dn Deccan Express, 1009 Dn Sinhagad Express and 1023 Siddheswar Express) which carry the fresh shift staff to the substations and the various cabins in the ghat. As per our original schedule, we were due to take the 1009 Dn. Sinhagad Express which stops at TKW for one minute to Pune. But this was not to be !
|There was a derailment near Neral, which delayed all the traffic
indefinitely. We heard this news with a knot of fear in our bellies, the thought of
walking 11 Kms to Khandala (where the highway crosses the railway lines) in fading light
(and through numerous unlit tunnels), in a tired state was very depressing. However
the IR sent the 'work train' to the rescue. This is a departmental rake used for permanent
way maintenance which is homed at Lonavala. This rake was sent to bring back all the junta
caught in the ghat due to the derailment. Many of our friends climbed into the leading WCG
2 loco, while we chose to ride the BFR flatcar. Note the WCG 2 banker at the rear. Our
faces wear the relief having got a ride out of the ghats.
|The view forward of the BFR. Note the rails and the sleepers used as for
the permanent way maintenance. The wagon before the BFR is the ballast hopper wagon.
Apparently that was more comfortable than the BFR, causing these people to change their
perch. The BFR had previously carried some chemicals which caused severe itching to
all of us for a couple of days.
|Shyama is ecstatic about the ride. We always wanted to ride a flat car, and we got the opportunity to do so only in such strange circumstances. We took the 2.6 Kms long tunnel no 26 from Monkey Hill to Khandala on this journey. It is an eerie experience, sitting for many minutes in total darkness without any clue to where we were. The darkness was suddenly broken by the huge ventilation shafts from the tunnel to the top of the mountain.|
More Ghat pictures from Dr. Shirish Yande !
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