16/11/2016 1 METHODS OF SLOPE REMEDIAL (SOIL NAIL / SHOTCRETE / VEGETATION) KEMENTERIAN KESEJAHTERAAN BANDAR, PERUMAHAN, DAN KERAJAAN TEMPATAN PRESENTATION OUTLINE 1. INTRODUCTION 2. HISTORY OF SLOPE FAILURES 3. PROBLEM STATEMENTS 4. METHODS OF SLOPE REMEDIAL i. SOIL NAIL ii. SHOTCRETE iii. VEGETATION 5. CASE STUDY OF SLOPE REMEDIAL : BUKIT NANAS 6. FACTOR OF SAFETY (FOS) GUIDELINE FOR SLOPE STABILITY 7. CONCLUSION 1.0 INTRODUCTION 1. The POPULATION OF MALAYSIA was estimated to be 30 572 466 people. This is an INCREASE of 1.51% compared to the previous year. 2. The escalating numbers of population leads to the HIGH DEMAND FOR RESIDENTIAL AREA. 3. LIMITED AVAILABILITY OF FLAT LAND causes the development to shift towards the hilly areas. 4. Rapid development on hilly areas affects SLOPE STABILITYand poses RISKS and DETERIORATION to properties and human lives. 5. Thus, SUITABLE SLOPE REMEDIAL WORKS is NECESSARY to strengthen the slope and ensure the slope is safe.
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16/11/2016
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METHODS OF SLOPE REMEDIAL(SOIL NAIL / SHOTCRETE / VEGETATION)
KEMENTERIAN KESEJAHTERAAN BANDAR,PERUMAHAN, DAN KERAJAAN TEMPATAN
PRESENTATION OUTLINE
1. INTRODUCTION2. HISTORY OF SLOPE FAILURES
3. PROBLEM STATEMENTS4. METHODS OF SLOPE REMEDIAL
i. SOIL NAILii. SHOTCRETEiii. VEGETATION
5. CASE STUDY OF SLOPE REMEDIAL :BUKIT NANAS
6. FACTOR OF SAFETY (FOS) GUIDELINEFOR SLOPE STABILITY
7. CONCLUSION
1.0 INTRODUCTION
1. The POPULATION OF MALAYSIA was estimatedto be 30 572 466 people. This is an INCREASE of1.51% compared to the previous year.
2. The escalating numbers of population leads to theHIGH DEMAND FOR RESIDENTIAL AREA.
3. LIMITED AVAILABILITY OF FLAT LAND causes thedevelopment to shift towards the hilly areas.
4. Rapid development on hilly areas affects SLOPESTABILITYand poses RISKS and DETERIORATIONto properties and human lives.
5. Thus, SUITABLE SLOPE REMEDIAL WORKS isNECESSARY to strengthen the slope and ensurethe slope is safe.
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HUMAN ERRORSINVOLVING SLOPE FAILURECauses oflandslides
No. of Causes Percentage (%)
Design Errors 29 60
Construction Errors 4 8
Design &Construction Errors
10 20
Geological Features 3 6
Maintenance 3 6
Total 49 100
Reference: Proceedings of the 3rd International conference onGeotechnical Engineering for Disaster Mitigation and Rehabilitation 2011
1.0 INTRODUCTION
Over 700 landslideswere reported on 2015
410 landslidesoccurred on
federal roads
290 happenedalong state
roads
According to the landslide forensic statistic data from year 2004 to2007 of Slope Engineering Branch under the Public Works ofDepartment Malaysia, 57% of landslides were due to human factors,whereas only 29% and 14% due to physical and geological factors,and most of the landslides occured at man-made slopes
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SLOPE FAILURE AT BUKIT ANTARABANGSA(2008)
• Occurred on 6TH December
2008
• Location : Bukit Antarabangsa,
Ulu Klang, Selangor
• 14 Bungalows at Taman Bukit
Mewah and Taman Bukit
Utama destroyed
• 1.5 km from Highland Tower.
• Fatalities : 4 persons
• Injuries :15 persons
SLOPE FAILURE ATBUKIT ANTARABANGSA
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SLOPE FAILURE AT SETIAWANGSA• Emergency Response on Setiawangsa Slope Failure (28th December 2012)• 1 house were badly damaged and houses evacuation were applied
BRIEFING TO PUBLIC & MEDIA ON SLOPE FAILUREAT SETIAWANGSA
Briefing To Public
Briefing At Site
Briefing To Media And Kuala LumpurMayor
Briefing To Media At SiteBriefing To Public
DTM SETIAWANGSA SLOPE FAILURE
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DTM SETIAWANGSA SLOPE FAILURE
AFTER SLOPE FAILURE
PROPOSED REMEDIALWORK
SLOPE FAILURE AT BUKIT NANAS
Wangsa Maju,2006
Taman Tasik Perdana,2011Bangsar, 2011
La View En Rose Restaurant,2014
Bukit Segar,2010
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Jalan Ampang, 2013
Jalan Semantan, 2008
Cheras, 2011
Wangsa Maju,2006
SLOPE FAILURE AT LEBUHRAYA MAHAMERU
TRAFFIC CONGESTION
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SLOPE FAILURE AT RUMAH ANAK-ANAK YATIM DAN KEBAJIKANMADRASAH AL-TAQWA, HULU LANGAT
• Occurred on 21st May 2011• Location : Rumah Anak-anak Yatim dan
Kebajikan Madrasah Al-Taqwa, FelcraSemungkis, Batu 14, Hulu Langat.
• The number of Victims : 25 persons• Fatalities : 16 persons• Injuries :9 persons
SLOPE FAILURE ATHULU LANGAT
LANDSLIDE AT KM52.4, KARAK HIGHWAY
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DEBRIS FLOWIN RAUB,PAHANG
SLOPEFAILURE INSG. BESI,KUALA
LUMPUR
As a reminder, repair works are very,
and the reactive measures taken would givesimpact towards
thus…………
Preventive is better than corrective,
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LIST OF REMEDIAL WORK FOR SLOPE FAILURES(2008-2014)
Location CameronHighland KM 55
Jalan KualaTerengganu -
Jabor
Tasik KenyirSeksyen 37
ChangkatPersekutuan Bukit Nenas
Date of Failure 2008 2009 2010 2013 2013
End ofConstruction 2009 2010 2013 2014 2015
Area of Failuresq.m(sq.ft) 65,110sq.ft 44,200sq.ft 94,2200sq.ft 12,880sq.ft 93,260sq.ft