Abstract Parameters of primary support was improved by increaing initial shotcret thickness, reducing steel frame intervals,setting locking anchor pipes at arch abutments and full-face composite grouting with cement and water glass for the water-soaked gravel and sand section in Gangudun tunnel. Construction techniques of the tunnel in water-soaked gravel and sand is summarized after analyzing the effect of support.
Abstract:
Parameters of primary support was improved by increaing initial shotcret thickness, reducing steel frame intervals,setting locking anchor pipes at arch abutments and full-face composite grouting with cement and water glass for the water-soaked gravel and sand section in Gangudun tunnel. Construction techniques of the tunnel in water-soaked gravel and sand is summarized after analyzing the effect of support.
HA Ji-Zhang,
Huang-Wei-Wang,
Shao-Da-Peng
.Comprehensive Construction Techniques for a Tunnel in Water-soaked Gravel and Sand[J] MODERN TUNNELLING TECHNOLOGY, 2011,V48(2): 128-131