Sinorock self-drilling anchor bolts efficient in tunnel support

The diversion multipurpose project located in the Mid-Western Region started on Jul 28th, 2016, and was completed in April 2019, its a national pride project. 

The total cost of the project is around Rs16 billion. The multipurpose project will divert 40 cubic meters per second of water from the Bheri River to the Babai River to irrigate 51,000 hectares of land round the year in Banke and Bardia districts besides generating 48 MW of energy. 

The government plans to implement the project in two stages—diversion and irrigation components. The diversion component consists of the headwork, headrace tunnel, and powerhouse while the irrigation component is being implemented through a separate project, namely the Babai Irrigation Project. 

The project is one of the country’s ambitious projects. It is expected to ease the food crisis in the Mid-Western Region by increasing production. The government had invited bids for the project in July 2012, but due to lack of resources and delays in appointing a contractor prevented the four-year project from moving ahead in time. 

Self-drilling rock bolt plays an important role in the diversion tunnels. Self-drilling anchor produced by Sinorock®, which can be cut according to clients’ requirements and also can be lengthened by the coupler, so it’s a very effective anchorage method especially in the narrow space condition of tunnel construction. Self-drilling anchor bars can be grouted while drilling, which plays the anchoring role at the same time, thus avoiding the hole collapse. Based on the actual practices, it showed that the self-drilling anchor bolt system is perfect for the tunnel in complex or poor geological conditions.

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