Analysis of Mining Subsidence Characteristics and Deformation Prediction considering Size Parameters and Mechanical Parameters

Table 3

Comparison of measured and predicted results of maximum subsidence in some coal mines.

Name	Thickness of loose layer/m	Thickness of bedrock/m	Thickness of coal/m	Elastic modulus/GPa	Tensile strength/MPa	Cohesion/MPa	Internal friction angle	Predicted value/mm	Measured value/mm
Sandaogou coal mine	70	67	6.6	2.8	4.3	2.9	34	3502	3346
Baodian coal mine	200	73	8.5	5.4	9.0	2.5	36	3974	3931
Zhaogu no. 1 mine	400	54	3.0	14.5	8.2	4.2	37	2753	2992