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Alimak or Alikraft is a type of machine to raise bore any pilot shaft from bottm of any vertical or inclined shaft. Purpose of the use of this machine is to excavate underground shaft in any hydropower project or for irrigation purposes or as per required. It is a very challenging type of job to excavate shafts with this type of machines.

Horizontal Pressure Tunnel- 1 (HPT-1) of length 870 m has been through to the bottom of Vertical Pressure Shaft 1 (VPS-1). Its Lower Solu Hydropower Project 82 MW

Bishwakarma Puja is a Hindu festival dedicated to Lord Vishwakarma, who is considered the divine architect and engineer in Hindu mythology. He is credited with the creation of the palaces, weapons, and chariots for the gods. The festival is observed with great reverence, especially by workers, craftsmen, engineers, and those involved in industries related to construction, manufacturing, and mac...

penstock pipe bend welding

Rock bolt pull-out test is a crucial procedure in tunnel construction and maintenance, designed to assess the anchoring strength and stability of rock bolts used to support tunnel linings. During the test, a hydraulic jack is used to apply a controlled load to the rock bolt, pulling it out of its anchor point within the rock mass. The force required to dislodge the bolt is measured, providing i...

In a hydropower project, hydraulic testing of the headworks structures is an essential stage to guarantee the facility's safe and effective operation. The headworks structure is essential for managing the water flow into the hydroelectric system. It consists of parts including the intake, gates, and trash racks. To assess how well these structures function under different flow circumstances and...

mucking is a process of removing materials from the accumulated place. In case of tunnel, after the blast of the tunnel face, the accumulated rock or soil materials are removed and dumped in a selected place. This process is called mucking. Muck is the term for the accumulated materials. Mucking inside the tunnel is done with the help of muck loader and truck or wagons which transport the muck ...

Sometimes, overbreak in weak rock mass condition becomes a headache in tunnel construction. It is a great challenge to recover and proceed forward with safe execution

Installation of Cable Anchor 30m (Double Corrosion Protected) in length for slope protection. Cable anchoring for slope protection is a crucial technique used to stabilize steep terrain and prevent erosion or landslides. It involves strategically placing high-tensile steel cables into the slope at varying depths and angles. These cables are securely anchored into the ground using methods such a...

Highest railway bridge

Hydropower Project - Likhu IV 52.4 MW

Sunkoshi Marin Diversion Project- After the Breakthrough

Breakthrough of Vertical Pressure Shaft

Mucking Inside Tunnel

Shotcreting works on slope

wet test of headworks structures

Surge Shaft

Lower Solu Hydropower Project Headworks Area

A short trip to desilting chambers

Open Blast of boulders