Abstract
The study of Saron Veng landslide is situated at the eastern limb of the Aizawl anticline. The landslide occurred on 13th June 2017 at 7:00–8:00 A.M. It swept away one residential building where seven families lived, and a link road between Saron Veng and Tuithiang Veng was blocked for more than a month. The improper drainage system, weak lithology, and high permeability also enhance the triggering factor for a landslide. The landslide covers an area of 3500 m2, measuring 101.49 m in length and 44.196 m in width. The lithology of the site is composed of siltstones and sandstones, which were overlain by a thick regolith. Geological and geotechnical fieldwork was done based on various parameters like in-situ rock strength, particle size distribution for soil classification, seepage water quality, Atterberg’s limit, Direct Shear test, and analyses based on Limit Equilibrium Method (LEM). The primary soil type is coarse to very coarse sand. Water analysis shows that seepage water is fit for drinking. The average in-situ rock strength is 18N/mm2; soil can be classified as ‘slightly plastic’ from Atterberg’s values. Direct shear shows that the soil has weak cohesion. The safety factor ranges from 0.372 to 0.391, indicating that instability slope. It can be concluded as ‘debris slide,’ soft plastic type of soil, weak cohesion, and an ultimate bearing capacity of 631.88 shows that unsafe for any structure. The seepage acts as a lubricant for sliding, added by rainfalls. Benching to reduce load and decrease shear strength and proper drainage system are suggested as mitigation measures.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Aydin A, Basu A (2005) The Schmidt hammer in rock material characterization. Eng Geol 81:1–14
ASTM Standard D6913–04 (2009) Standard test methods for practice size distribution (gradation) of soils using sieve analysis. Annual book of ASTM standards, 04.08. Philadelphia (PA): ASTM
ASTM Standard D5873- 14 (2014) Standard test method for determination of rock hardness using rebound hammer. Annual book of ASTM standards, 04.08. Philadelphia (PA): ASTM
BIS (1985) Indian standard methods of test for soils, part V determination of liquid and plastic limit. IS: 2720 (Part 5)
BIS (1996) IS: 2720 (Part 13)—1986 Indian standard methods of test for soils, Part 13 direct shear test (Second Revision), UDC 624: 131.439.5, p 12
Coduto DP (1999) Geotechnical engineering: principles and practices. Prentice Hall, New Jersey, pp 125–130, 136–155
Kumar S, Singh TN, Sawmliana C (1996) On the instability problems in South Hlimen Landslide, Mizoram. Indian J Eng Mat Sci 4:78–80
Laldinpuia (2019) Cut slope stability analysis of Rangvamual landslide along Aizawl airport road, Northeast India: proceedings of the 2nd GeoMEast international congress and exhibition on sustainable civil infrastructures, Egypt 2018—the official international congress of the soil-structure interaction group in Egypt (SSIGE). https://doi.org/10.1007/978-3-030-01941-9_16
Laldinpuia (2014) Geological investigation of slumping localities in Saiha Town, Southern Mizoram, North-East India. In: Sassa K, Canuti P, Yin Y (eds) Landslide science for a safer geo-environment, volume 3: targeted landslides. Springer International Publishing Switzerland, pp 407–411
Laldinpuia (2015) Geological studies of the rocks at landslide prone localities in Aizawl, Mizoram; Mizoram University (Ph.D thesis)
Petrucci O, Gulla G (2010) A simplified method for assessing landslide damage indices. Nat Hazard 52:539–560
Raju M (2001) Role of seismicity and rainfall as causative factors of extensive landslides in Mizoram. National seminar on geotechniques and geological hazards in the Indian context, April 24–26, 2011, GSI NER, Pre-seminar volume, pp 165–167
RocScience Inc. (2010). Slide v. 6.0- 2D limit equilibrium slope stability analysis. Toronto. Ontario: Canada. www.rockScience.com
Shimoma S, Orense RP, Maeda K, Towhata I (2004) Experimental study on landslides caused by heavy rainfall. J Natural Disaster Sci 26(1):15–26
Sardana S, Verma AK, Verma R, Singh TN (2019) Rock slope stability along road cut of Kulikawn to Saikhamakawn of Aizawl, Mizoram, India. Nat Hazards 99:753–767
Singh TN, Singh R, Singh B, Sharma LK, Singh R, Ansari MK (2016) Investigation and stability analyses of Malin village landslide of Pune district, Maharashtra, India. Nat Hazard 81:2019–2030. https://doi.org/10.1007/si11069-016-2241-0
Singh CD, Singh J (2013) Landslides caused due to ignorance- case studies from North-East Inida. J Geol Soc Ind 82:91–94
Stead D, Coggan J (2012) Numerical modeling of rock- slope instability. In: Clague JJ, Stead D (eds) Landslide types, mechanism and modeling. Cambridge, New York, pp 144–158
The Soil Engineering Sectional Committee (2004) Indian standard classification and identification of soils for general engineering purposes (1st revision, IS: 1498–1970 Edition 2.2). BIS: New Delhi
Tiwari RP, Sharma BL, Singh B (1996) Geotechnical appraisal of Bawngkawn landslide, Aizawl, Mizoram. In: Proceedings of international conferences on disaster and mitigation. Madras 1:A4 124–A4 131
Verma AK, Sardana S, Sharma P, Laldinpuia, Singh TN (2019) Investigation of rockfall prone road cut slope near Lengpui Airport, Mizoram, India. J Rock Mech Geotech Eng 11(1):146–158
Zairemmawii, Lalhlimpuia H, Lalhmingsangi, Vanthangliana V, Laldinpuia, Kumar S (2021) Rockfall analysis of state highway along the Southern Vicinity of Aizawl, Mizoram. Sci Technol J 9:100–112. https://doi.org/10.22232/stj.2021.09.02.13
Acknowledgements
The authors are grateful to the concerned government department, local authorities, and people of Saron Veng and Tuithiang Veng for their cooperation during field studies and damage assessment of the affected area.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Lallawmsanga, Lalthazuala, C., Lalhmingsangi, Lalhlimpuia, Kumar, S., Laldinpuia (2023). Assessment and Analysis of Geotechnical Properties of Saron Veng Landslide, Aizawl, Mizoram. In: Mitra, S., Dasgupta, K., Dey, A., Bedamatta, R. (eds) Disaster Management and Risk Reduction: Multidisciplinary Perspectives and Approaches in the Indian Context. NERC 2022. Springer, Singapore. https://doi.org/10.1007/978-981-99-6395-9_3
Download citation
DOI: https://doi.org/10.1007/978-981-99-6395-9_3
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-99-6394-2
Online ISBN: 978-981-99-6395-9
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)