The Tensile Strength of Loess in Northwest China by Unconfined Penetration Test and the Distinct Element Simulation

Table 1

The state of loess in situ.

Sample location	Section mileage	Burial depth (m)	Geographic position (city)	Age of deposition	Apparent properties
Artificial slope	Slope foot	20	Lanzhou	Q3	Dry, friability
Wangjiagou tunnel	DK983 + 898	70	Lanzhou	Q3
Beiershilipu tunnel	DK953 + 285	25	Dingxi	Q3	Wet, soft, proteiform, and joint layers obviously
Weijiazui tunnel	DK957 + 588	30	Dingxi	Q3
Xujiachuan tunnel	DK964 + 547	150	Dingxi	Q2	Hard, integrity, dry and strong structure
Xinbaotashan tunnel	DK502 + 655	100	Yanan	Q2