Selection of Access Shaft Schemes for Underground Works in the Desert Area in Northern Shaanxi

Abstract:

‘Quick inflow of sand’ is a common geological hazard in the shaft works in desert area in northern Shaanxi. It has different potential hazard according to the project position, structural features of rock or soil and geo-hydrological conditions. The project can be successfully accomplished only by proper measures according to the geological conditions of shaft to avoid quick inflow of sand. The combined analysis was made on the experienced accidents, 3 kinds of feasible access shaft scheme and adaptable geological conditions were inducted with the important attentions in each design and construction process.