Highway Research Record No. 39 - Indian Roads Congress

Further information/Copy of report can be obtained
from
The Head, Geotechnical Engg. Division, CSIR- Central
Road Research Institute, New Delhi - 110025, Mobile:
9868858380 phone: 26832173 Fax: 011-26845943,
e-mail ID: vittal.crri@gmail.com
3.
Site Stabilisation for Platform at Diglipur
(North Andaman)
Keywords: landslide Stabilisation, Debris, Hill
Cutting
Date of Start: Feb 2012
Date of Completion (Targeted): Dec. 2012
I.
II.
Military Engineering Services( MES) (S)
Central Road Research Institute, New Delhi
(R)
Scope and Objectives
Stabilisation of Hill-Cut Slope at North Andaman Island
(Near Diglipur) using appropriate landslide remediation
measure
Methodology
The area under the study falls in the Northern Part of
Andaman Islands. Diglipur is the main township of the
North Andaman Island, which is about 325 km from
Port Blair. Most of the hill ranges in these islands,
show a parallel trend to each other. The Platform was
constructed after cutting two adjoining hillocks. The
hilltop is at an elevation of 148m from mean sea level.
The terrain is fully covered with dense vegetation.
Nearly 3.5 lakhs cubic meters of earth was excavated
to create platforms on the hilltop. Debris excavated from
that area was loosely dumped on side slopes. Berms
were provided on the slope. These hill cut platforms
now face instability problems due to landslides. Heavy
rainfall during monsoon contributes to slope stability
problems in this area. The first landslide was observed in
one side of the hill cut platform during September 2008.
Presently another slide has occurred in the opposite
side of the first slide. MES authorities requested CRRI
to investigate and suggest Slope Stabilisation and
other remedial measures. The field investigations are
in progress.
Interim Conclusions/Conclusions/Supporting Data
The project is presently under progress.
Significance/ Utilisation Potential
The instability problems have occurred mainly due to
(a) Highly weathered and soft nature of rocks in the
ROAD RESEARCH IN INDIA 2011-12 33
area and (b) Creation of additional overburden pressure
due to dumping of hill cut materials (c) High rainfall and
inadequate drainage measures which saturate the
landmass
Further information/Copy of report can be obtained
from
address: The Head, Geotechnical Engg. Division,
CSIR- Central Road Research Institute, New Delhi
- 110025, Mobile: 9868858380 phone: 26832173,
Fax: 011-26845943, e-mail ID: vittal.crri@gmail.com
4.
Geotechnical Study of Jugsalai Cinder Dump
Area for Construction Purposes
I.
II.
Keywords: Cinder dump, SPT,DCPT and Plate
load tests
Date of Start: March 2011
Date of Completion (Targeted): Dec. 2012
Tata steel limited, Jamshedpur, Jharkhand
( S)
CSIR- Central Road Research Institute,
New Delhi (R)
Scope and Objectives
•
•
Determining Feasibility for using cinder dump site
for construction purposes
Determining the type of foundations to be adopted
for structures built on cinder dump
Methodology
Cinder is a waste material of coal burning residue
from blast furnaces/ power plants. Slag is another
waste material generated as a by-product during the
manufacturing of iron. At Jamshedpur, both cinder and
slag have been dumped together in the form of a dump.
The slope of the mound is around 45 0 and the height
is varying from 10 m to 45 m. Tata Steel works now
intend to use this dump area to build structures and
connecting roads on this dump. Sub-soil investigation
was carried out at this dump area and different field tests
viz. SPT, DCPT and Plate load tests were conducted.
Data analysis work is in progress.
Interim Conclusions/ Supporting Data
The project is presently under progress.
Further information/Copy of report can be obtained
from
address: The Head, Geotechnical Engg. Division,
CSIR- Central Road Research Institute, New Delhi -
110025, Mobile: 9868858380, phone: 26832173, Fax:
011-26845943, e-mail ID: vittal.crri@gmail.com