The Ministry of Road Transport and Highways (MoRTH) on July 24, 2024, issued a circular seeking comments/suggestions/value addition on the report of an Expert Committee to suggest Cost-effective Long-term Remedial Measures for Landslide Prone Areas in Hilly Regions.
The following has been stated: -
• The expansion of national highways in hill roads with mountainous/steep terrain involving a lot of hill cutting has resulted in landslides and destabilization of slopes, which are mitigated/protected using various methodologies suggested in different guidelines.
•There is a need to have a matrix of cost-effective protection/mitigation measures to be used for different slope types as determined based on on-site investigations.
•The objectives of the committee are given below:
(i)Preparation of matrix of different types of field investigations (i.e., Geotechnical/ Geological investigation, Geophysical investigation, groundwater investigation, etc.) required for various types of soil/rock slopes, geological formations, rainfall, landslide type, rock fall, debris flow, etc. as observed at the site during visual inspection.
(ii)Preparation of matrix of most suitable mitigation measures (such as benching of slope, retaining wall, soil nailing, ground anchor, geosynthetic mat, coir geotextile, jute geotextile, biotechnical slope protection, greening techniques, flexible ring net barriers, check dams, surface water drains, surface protection, subsoil drains, etc.) for different types of slope parameters based on results of field investigations.
•All the stakeholders are requested to kindly send her/his comments/suggestions on the enclosed "Expert Committee Report on Cost Effective Long-Term Remedial Measures of Landslide Prone Areas in Hilly Regions" within 15 days.
The detailed report is given in the document below.
[EFile No.RW/NH-33044/55/2021-S&R (P&B) pt. /Hill Slope Monitoring (Computer No.219394)]
