Engineering Characteristics and Application Analysis of Red Sandstone in the Lanzhou Metro

Table 5

Dry density data of lines 1 and 2.

Serial number	Engineering site	Number of samples	Average/(g·cm^-3)	Disintegration time
1	Interval of Cultural Palace to Xiguanshizi	40	1.83	<1 h rapid disintegration
2	Interval of Xiguanshizi to Provincial Government	94	1.73
3	Provincial Government	45	1.71
4	Interval of Provincial Government to Dongfanghong Square	225	1.76
5	Dongfanghong Square	9	1.84
6	Interval of Dongfanghong Square to Panxuan Road	44	1.71
7	Panxuan Road	15	1.88
8	Interval of Panxuan Road to Wulipu	13	1.81
9	Wulipu	10	1.85
10	Interval of Wulipu to Eastern Market	7	1.75
11	Eastern Market	8	1.74
12	Interval of Eastern Market to Gongxingdun	10	1.78
13	Gongxingdun	6	1.71
14	Interval of Gongxingdun to Jiaojiawan	18	1.82
15	Jiaojiawan	9	1.8
16	Interval of Jiaojiawan to Donggang	5	1.88
17	Donggang	42	1.82
18	Interval of Donggang to Youdiandalou	65	1.82
19	Youdiandalou	39	1.8
20	Interval of Youdiandalou to Train station	85	1.8
21	Train station	49	1.73
22	Interval of Train station to No. 5 Bus Company	21	1.78
23	Interval of Dingxi Road to Wulipu	36	1.74
24	Interval of Wulipu to Yannan	91	1.76
25	Yannan Road	77	1.78
26	Interval of Yannan Road to Yanyuan Road	35	1.83
27	Yanyuan Road	96	1.81
28	Interval of Yanyuan Road to Yanbei Road	57	1.81
29	Xiguanshizi	45	2.02	1-24 h partial disintegration
30	No. 5 Bus Company	30	1.9
31	Interval of No. 5 Bus Company to Dingxi Road	41	1.95
32	Dingxi Road	115	1.9
33	North side of interval of Yanyuan Road to Yanbei Road	17	2.19	Basically nondisintegrating
34	Yanbei Road	55	2.24