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

Rockfall barrier systems in Nepal

GSI introduced and installed the country’s first flexible rockfall barriers, now protecting hydropower and highway infrastructure.

FIRST

Earth anchor systems in Nepal

GSI introduced and installed earth anchors for landslide stabilization, from Nagdhunga to private development sites.

Who we serve

Public and private clients in development and government services, as well as legal and regulatory interests.

How we work

Seamless integration, timely execution and cost-effectiveness, with every approach tailored to the project and reviewed against client feedback.

What we bring

Experience across transport, hydropower, water supply and sanitation, urban and rural infrastructure, and social and environmental planning.

Partners & people

We work with international firms on rockfall, debris flow and slope instability. Every staff member receives continuous training.

In-house capacity

Our own rigs, our own lab, our own crews.

Owning the equipment means the data behind every design is ours, and work starts when the site is ready.

200mGeotechnical core drilling depth
50mDTH drilling for slope protection works
5Material groups tested in our laboratory
100+Projects completed since 2015
  • Geotechnical core drilling machine upto 200 m
  • Down-the-hole (DTH) drilling upto 50 m
  • Triaxial Testing In-house
  • Elefoot and microtremor testing Geophysics
  • Soil, rock and materials laboratory In-house
  • Data processing and GEO5 modelling In-house

Anatomy of a secured slope

From first borehole to final sensor.

One team covers every stage, so what we learn in the ground goes straight into design, construction and monitoring. Scroll to build the slope.

Cross-section of a slope showing investigation, design, protection works and monitoring by GSI Road, homes and hydropower COLLUVIUM WEATHERED ROCK BEDROCK Core drilling to 200 m Potential slip surface Stability analysis Method of slices · GEO5 Flexible rockfall barrier Earth anchors DTH drilling to 45 m Horizontal drains InSAR satellite Wireless sensors Event detection: liveMovement within limits
Stage 04 of 04 · Monitor
01 · INVESTIGATE

Read the ground.

Before anything is designed, we find out what the slope is made of and where the water goes.

  • Core drilling upto 200 m
  • Soil, rock and materials testing in-house lab
  • ERT, seismic refraction, MASW geophysics
02 · DESIGN

Find the failure.

We locate where the slope could slip and how rock would fall, then design the works that stop it.

  • Slope stability analysis GEO5
  • Hazard and susceptibility mapping GIS
  • Site seismic analysis design input
03 · BUILD

Pin it, catch it, drain 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.

  • Flexible rockfall barriers first in Nepal
  • Anchors / Rockbolt DTH upto 50 m
  • Groundwater drainage wells, drains
04 · MONITOR

Watch it move.

Sensors on the slope and satellites overhead track movement, so owners can act long before failure.

  • InSAR satellite monitoring with Geofem
  • Wireless geotechnical sensors Worldsensing
  • Event detection alerts live