Abstract：
The construction of the Humaling tunnel on the Lanzhou-Chongqing railway in fine silt stratum with large quantities of water difficult and risky. To understand the scope of the loose rock zone after excavation, the seismic reflection chromatography was taken by means of an inclined shaft. Based on the measured results, calculations were carried out comcerning the pressure of the surrounding rock, and support parameters were optimized.
.Loose Rock Zone Measurements and Rock Mass Pressure Calculations for a Saturated Fine Silt Stratum[J] MODERN TUNNELLING TECHNOLOGY, 2012,V49(4): 17-21
2012, Vol. 49 