Experimental Study on the Influence of Borehole Angles on Fracture Grouting in Limestone Aquifers

Table 1

Slurry volume, water-solid ratio, and basic parameters of typical boreholes.

Boreholes	Length (m)	Dip angle (°)	Water discharge (m3/h)		Water pressure (MPa)		Cement/solid	Slurry volume
			Before	After	Before	After
D17-2	198	25	2	0.2	4.5	4.5	0.192	38.14
D17-3	147	36	1	0.2	4	3.8	0.191	27.54
D17-5	191	28	1	0.2	4.3	4.0	0.192	19.07
D17-6	235	23	1	0.2	4.6	4.5	0.192	18.01
D19-10	142	34.5	5	0.2	5.5	5.0	0.192	36.02
D19-11	160	30	1	0.3	4	3.8	0.192	36.02
D19-13n	121	47	1	0.3	4.2	3.8	0.192	31.78
D21-2	197	26	2.6	1.04	5.8	5.8	0.192	56.14
D21-7	156	35	1	0.2	5.3	5.1	0.192	13.77