Corrosive Environment Assessment and Corrosion-Induced Rockbolt Failure Analysis in a Costal Underground Mine

Table 1

Chemical composition of groundwater in Sanshandao gold mine.

Number	Depth	Cl^-			Na^+	Mg^2+	Ca^2+	pH
		(mg/L)	(mg/L)	(mg/L)	(mg/L)	(mg/L)	(mg/L)
1	510	16523.88	2261.24	297.12	8847.47	487.02	1045.30	6.43
2	510	16025.40	1807.01	100.94	6955.79	1124.45	965.45	6.20
3	525	13444.68	2057.21	234.41	7497.21	731.36	898.88	7.05
4	525	19365.27	2342.32	79.50	10054.26	668.48	854.01	5.89
5	555	20894.24	2145.96	175.90	9784.20	475.51	1164.71	5.22
6	555	15998.05	2167.64	141.46	7751.26	746.70	1224.83	6.38
7	555	11728.50	1325.37	268.11	6450.37	733.50	746.10	7.14
8	600	21828.79	2365.68	231.56	10789.73	982.22	1432.36	6.11
9	600	19154.18	2298.28	231.70	9452.80	754.51	581.44	5.71
10	600	21149.15	2356.63	54.55	10052.42	1384.30	1841.09	6.80
11	645	19422.77	3089.85	389.54	6894.24	912.45	1288.27	4.68
12	645	25382.65	2877.16	255.53	12329.65	1898.21	1154.32	6.27
13	690	21583.90	2132.05	103.36	9446.21	1463.83	1397.62	5.97
14	690	22114.57	2415.61	98.85	11336.05	1093.48	888.97	6.04
15	725	16452.45	1448.19	30.80	8369.97	975.24	856.32	6.75