Geotech Solutions International ISO 9001:2015 certified Est. January 2015
Innovation for geo-disaster management and sustainable engineering. Investigation, design, specialist construction and monitoring for landslides, rockfall and unstable ground across the Himalaya.
Flagship projects
Rockfall barriers and earth anchors, designed, supplied and installed by GSI where failure is not an option.
Rockfall protection · Sindhupalchowk
The Upper Bhote Koshi run-of-river scheme sits in a steep gorge on the Bhote Koshi, a tributary of the Sun Koshi. GSI designed, supplied and installed the rockfall protection system that shields the project’s infrastructure and people from falling rock.
Rockfall protection · EPC · Dolakha
One of Nepal’s largest hydropower projects, in steep and highly seismic terrain. Above the take-off yard at Gongar, GSI designed, supplied and built a flexible rockfall barrier system as part of the slope stabilization works, protecting the installation and its personnel.
Earth anchors · Landslide countermeasure · Kathmandu
On the main road into Kathmandu, the west portal of the Nagdhunga Tunnel needed a permanent fix for an unstable slope. GSI carried out the west landslide countermeasure works, supplying and installing earth anchors and slope protection, with DTH drilling up to 45 m.
About GSI
Since January 2015, GSI has completed more than 50 projects across Nepal. We investigate difficult Himalayan ground, design solutions that fit it, then build and monitor them with our own crews, backed by in-house drilling and a soil and rock laboratory.
FIRST
GSI introduced and installed the country’s first flexible rockfall barriers, now protecting hydropower and highway infrastructure.
FIRST
GSI introduced and installed earth anchors for landslide stabilization, from Nagdhunga to private development sites.
Public and private clients in development and government services, as well as legal and regulatory interests.
Seamless integration, timely execution and cost-effectiveness, with every approach tailored to the project and reviewed against client feedback.
Experience across transport, hydropower, water supply and sanitation, urban and rural infrastructure, and social and environmental planning.
We work with international firms on rockfall, debris flow and slope instability. Every staff member receives continuous training.
Capabilities
Four service lines that run from the first borehole to long-term monitoring.
Moisture content, density, specific gravity, grain size (sieve and hydrometer), Atterberg limits, direct shear, triaxial, unconfined compression, consolidation, permeability (constant and falling head), shrink-swell, Proctor compaction and CBR.
Point load strength, UCS, rock triaxial, slake durability, water absorption, porosity, specific gravity and unit weight.
Sieve analysis, specific gravity, water absorption, bulk density, Los Angeles abrasion, ACV, AIV, flakiness and elongation index.
Penetration, softening point, Marshall stability and binder content.
Fineness, consistency, setting time, soundness, specific gravity, flow table, compressive and flexural strength, slump, air content, permeability and mix design.
Electrical Resistivity Tomography (ERT), Seismic Refraction Survey (SRT), Micro-Tremor Array Measurement (MAM) and Vertical Electrical Sounding (VES).
Surface deformation prediction for cut slopes; landslide monitoring for roads, hydropower, tunnel alignments and high dams; urban land subsidence.
In-house capacity
Owning the equipment means the data behind every design is ours, and work starts when the site is ready.
Anatomy of a secured slope
One team covers every stage, so what we learn in the ground goes straight into design, construction and monitoring. Scroll to build the slope.
Before anything is designed, we find out what the slope is made of and where the water goes.
We locate where the slope could slip and how rock would fall, then design the works that stop it.
Our own crews install the protection: barriers that catch falling rock, anchors that pin the slope to stable ground, drains that relieve water pressure.
Sensors on the slope and satellites overhead track movement, so owners can act long before failure.
Project atlas
Where GSI has worked across Nepal. Select a site on the map or in the list.
UgandaRockfall protection system design
SingaporeGeological core drilling for Nanyang Technological University, since 2013
Selected work
More projects from the 2026 company profile.
Slope · EPCIlam · 9.5 MW
Design, supply and installation of slope protection works at the surge tank area.
Samling Power Company Ltd.
LandslideBesisahar, Lamjung
Landslide mitigation for a cut slope at a building construction site.
Manav Sewa Ashram
GroundwaterBhaktapur
Wells and horizontal drains drilled in rock by DTH. The area is now dry and creep has stopped.
Chhaling Land Development Site
Multi-hazardDudh Koshi River Basin
Deep-seated slope deformation mapping and GIS decision-tree analysis for multi-hazard risk.
Asian Development Bank and Nepal Electricity Authority
SlopeKathmandu–Terai Fast Track
Slope protection works on Package 3 of the expressway.
SlopeBuditola Bhabar
Slope stabilization works on the Mahakali Highway.
| No. | Project and scope | Type | Client |
|---|---|---|---|
| 01 | Rockfall protection system, Upper Bhotekoshi Hydroelectric Project | Rockfall | Bhote Koshi Power Company Pvt. Ltd. |
| 02 | Flexible rockfall barrier above the take-off yard at Gongar (slope stabilization works) | Rockfall | Upper Tamakoshi Hydropower Ltd. |
| 03 | West landslide countermeasure works, Nagdhunga Tunnel Construction Project | Earth anchors | Hazama Ando Corporation |
| 04 | Slope protection at the surge tank area, Mai Beni Hydropower Project (9.5 MW) | Slope | Samling Power Company Ltd. |
| 05 | Rockfall protection systems in the Siddhababa area, Siddhartha Highway (volunteered by GSI) | Rockfall | Department of Roads, Government of Nepal |
| 06 | Tower Slope Stabilization of Rasuwagadhi Hydroelectric Project Transmission Line | Rasuwagadhi Hydropower | |
| 07 | Slope protection works at the Manav Sewa Ashram building site, Besisahar, Lamjung | Slope | Manav Sewa Ashram |
| 08 | Pre-feasibility study of road-access tunnels: Dang Valley–Rapti Valley, and Bankas Bash (Kapilvastu)–Kalakate (Dang/Arghakhanchi) | Study | MULTI-FBC-GES with ECoCoDE Nepal |
| 09 | Melamchi headworks damage assessment and catchment hazard mapping: multi-hazard field surveys and landslide study | Hazard | Asian Development Bank |
| 10 | Flood risk assessment and build-back-better planning after the 2021 flood, Melamchi, Sindhupalchowk (RFP No. MMSI/DRP/79-01) | Hazard | Melamchi Municipality |
| 11 | Slope mitigation plan, Ch. 46+600, Mugling–Abukhaireni–Pokhara Road | Slope | Meinhardt Singapore Pvt. Ltd., Nepal Branch |
| 12 | Groundwater management system installation, Chhaling Land Development Site | Groundwater | Chhaling Land Development Site |
| 13 | Multichannel Analysis of Surface Waves (MASW), Jagdulla Storage Hydroelectric Project | Geophysics | NEA Engineering Company Ltd. |
| 14 | 2D electrical resistivity tomography survey, Kimathanka Arun HEP, Sankhuwasabha (NEC/SQ/074-075-12) | Geophysics | NEA Engineering Company Ltd. |
| 15 | Slope protection at Dusit Thani Himalaya Resort, Namobuddha | Slope | GS Engineering and Construction Company Pvt. Ltd. |
| 16 | Soil characterization study of Swayambhu Hill for slope stabilization | Investigation | UNESCO |
| 17 | Geotechnical core drilling at Bardibas, Mahottari | Investigation | Earth Observatory of Singapore, Nanyang Technological University |
| 18 | Geological investigation, Sapta Koshi High Dam Multipurpose Project and Sun Koshi Storage-cum-Diversion Scheme | Investigation | N.K. Buildon Pvt. Ltd. |
| 19 | Initial risk assessment of earthquake-induced landslides, Jajarkot | Hazard | — |
People
Geologists, engineers, geophysicists and field crews, led by specialists with decades of Himalayan experience.
An engineering geologist who has spent 25 years researching earthquakes, landslides and debris flows. He holds a PhD in Engineering, completed postdoctoral research in geohazards in Japan, and is Professor at Tribhuvan University’s Central Department of Geology.
He is Vice-President for Asia of the International Association for Engineering Geology and the Environment (IAEG). He has held visiting posts at Kagawa University and Ehime University in Japan and with the UNESCO Chair Program at Shimane University. He played a vital role in managing the Sunkoshi landslide dam response, and continues to advise the Asian Development Bank and the World Bank on geohazards in Nepal.
Geotechnical engineer specialising in landslides, floods and earthquakes. Leads a national geodatabase for landslide inventory and hazard mapping. ME and PhD, Ehime University, Japan.
Electronic engineer specialising in geophysical analysis. PhD, Jeju National University, South Korea, with IEEE publications on electrical tomography and rockfall hazard in Nepal.
MSc in Engineering Geology. Leads engineering-geological site evaluations and oversees special construction operations, with many slope protection projects delivered.
MSc in Engineering Geology. Leads site investigations and supervises core drilling, collecting the field data that mitigation designs are built on.
Clients & partners
Organisations we have worked for, grouped by sector, and many more.
Fine Software’s GEO5 suite analyses and designs foundations, slopes, retaining walls and tunnels, combining analytical methods with finite element modelling. GSI provides licences, training and support in Nepal and the region.
Edge devices, long-range communications and software for monitoring geotechnical, structural and environmental assets: over 3,000 networks in 70+ countries and more than 170,000 sensors.
Satellite remote sensing with civil engineering and GIS expertise: millimetre-scale displacement monitoring, geohazard susceptibility mapping and soil moisture detection, viewed in the EYEGIS™ platform.
Quality management system certification covering engineering consulting, investigation, testing and specialised construction.
Corporate life member of the Nepal Hydropower Association.
Associate member of the International Association for Engineering Geology and the Environment.
Institutional member of the Nepal Geotechnical Society (NGS).
Institutional member of the Nepal Society of Engineering Geology.
Contact
Office
Bagdol Road, Dhobighat, Lalitpur-3
PO Box 9669, Kathmandu, Nepal
Phone / fax
Mobile
