Analysis of the Control Effect and Parameter Optimisation of Urban Surface Deformation in Underground Coal Mining with Solid Backfilling

Table 2

Description of test plans.

Factor	Subsidence factor	Tangent of major effective angle	Offset distance of the inflection point
Test 1	0.78	2.15	0.086
Test 2	0.80	2.15	0.086
Test 3	0.82	2.15	0.086
Test 4	0.84	2.15	0.086
Test 5	0.86	2.15	0.086
Test 6	0.82	1.75	0.086
Test 7	0.82	1.95	0.086
Test 8	0.82	2.15	0.086
Test 9	0.82	2.35	0.086
Test 10	0.82	2.55	0.086
Test 11	0.82	2.15	0.006
Test 12	0.82	2.15	0.046
Test 13	0.82	2.15	0.086
Test 14	0.82	2.15	0.126
Test 15	0.82	2.15	0.166