Sequential Measurement and Analysis of Large Underground Retaining Structures by Diaphragm Wall Anchor for the Spring Area

Table 1

The quality of the spring water in Jinan city (mg/L).

Site	Month	Salinity	Ca^2+	Mg^2+	K^+	Na^+	CL^−
Baotu Spring	July	594.8	90.2	22.1	1.1	35.3	51.42	77.06	300	52.7
	October	550.2	87.2	18.5	0.9	30.2	45.3	70.2	289.3	50
Pearl Spring	July	703.9	86.9	21.4	1.5	65	94.1	125.9	257.5	43.5
	October	468.4	82.2	16.1	0.8	35.7	50.4	92.8	237.7	25.5
Black Tiger Spring	July	646.1	122.2	23.1	0.5	18.6	54.9	87.3	296.9	40.2
	October	586.3	106.1	20.4	0.4	14.3	39.6	80.5	274.1	39.6
Five-Dragon-Pool Spring	July	753.3	142.1	32.9	0.7	25.7	82.8	121.5	325.8	83.2
	October	723.5	140.5	27.8	0.5	22.8	71.6	99.6	290.9	79.2
This study	July	582.3	85.6	20.1	1.2	32.2	50.3	70.1	285	51.2
	October	576.2	75.2	17.3	0.8	28.3	50.1	53.2	270.2	43.2