Three-Dimensional Numerical Modeling and Roof Deformation Analysis of Yuanjue Cave Based on Point Cloud Data

Table 1

Parameters of formation lithology.

Number	Stratum	Depth (m)	Elastic modulus (Pa)	Poisson’sratio	Cohesive strength (Pa)	Internal friction angle (°)	Density (kg/m³g)
1	Miscellaneous fill	25.2–70	1.00E + 09	0.41	2.50E + 04	18	1660
2	Fine sandstone	22.3–25.2	2.76E + 10	0.17	1.35E + 06	33	2230
3	Interbedded fine sandstone	21.8–22.33	1.38E + 10	0.25	9.00E + 05	34	2150
4	Fine sandstone	20.1–21.8	2.50E + 10	0.18	1.50E + 06	32	2200
5	Interbedded fine sandstone	19.23–20.1	1.38E + 10	0.25	9.00E + 05	33	2040
6	Fine sandstone	15.67–19.23	2.50E + 10	0.18	1.50E + 06	35	2240
6-1	Mud fine sandstone	15.38–15.67	1.00E + 10	0.3	6.00E + 05	33	2160
7	Mud fine sandstone	14.74–15.38	1.00E + 10	0.3	6.00E + 05	32	2230
8	Fine sandstone	10.72–14.74	2.50E + 10	0.18	1.50E + 06	34	2270
8-1	Fine sandstone	7.82–10.72	2.50E + 10	0.18	1.50E + 06	36	2210
9	Mudstone	7.34–7.82	6.00E + 09	0.35	8.00E + 05	37	2360
10	Fine sandstone	6.61–7.34	2.50E + 10	0.18	1.50E + 06	38	2160
11	Mudstone	5.35–6.61	6.00E + 09	0.35	8.00E + 05	39	2310
12	Fine sandstone	4.33–5.35	2.50E + 10	0.18	1.50E + 06	42	2350
13	Mudstone	−3.2–4.33	6.00E + 09	0.35	8.00E + 05	32	2260