Construction Technology of Small-section Tunnel in Crumbly Strata of Yangshan Mining Area

Abstract:

Good results were achieved in PD103 adit of Yangshan mining area in South Gansu by smooth blasting and new Austrian method. The paper introduced the blasting parameters and construction technology for small section tunnel in crumbly strata.

Key words:crumbly strata; small section tunnel; new Austrian method; smooth blasting; supporting