Bhagat , N. K. and Singh , M. M. and Rana , Aditya and Tewari , S. and Singh, P.K.
(2020)
Blasting technique for stabilizing accidentprone slope for sustainable railway route.
Current Science , 118 (6).
pp. 901-909.
Abstract
Konkan Railway has many unstable slopes along the
741 km long route from Roha to Thokur in the states
of Maharashtra, Goa and Karnataka in India. Frequent cases of boulder fall, slope failure and landslide
used to occur on the track during the rainy season.
Such cases have resulted in several severe train accidents, traffic interruptions, loss of lives and assets.
Hence the Konkan Railway Corporation deployed
several geotechnical measures such as wire-netting, retaining wall, rock bolting and shotcreting for stability
enhancement. However, none of these measures
proved effective and accidents continued. Finally, the
Konkan Railway Corporation decided to redesign the
cut-slopes using blasting. Excavation of hard rock for
its removal without damaging the existing track (2–
3 m away from the slope) and disrupting the traffic,
was a daunting task. An unplanned blast would have
resulted in the closure of the route for hours. The
present study explains the method in which entire cutting was redesigned by formation of 5 to 2 m wide
berms at an interval of 6 m bench height from rail
track level using novel direction controlled blasting
technique. Further, stability of the cut-slope, before
and after exacavation, has been determined using
kinematic analysis and 3D numerical modelling. Similar technique can be adopted to widen or stabilize an
active transportation route in hills.
| Item Type: |
Article
|
| Uncontrolled Keywords: |
Blasting, kinematic analysis, numerical
modelling, railway track, slope rockmass removal, stabilization. |
| Subjects: |
Blasting |
| Divisions: |
UNSPECIFIED |
| Depositing User: |
Mr. B. R. Panduranga
|
| Date Deposited: |
25 Mar 2020 10:11 |
| Last Modified: |
28 May 2020 04:04 |
| URI: |
http://cimfr.csircentral.net/id/eprint/2157 |
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