An Improved Monte Carlo Method Based on Neural Network and Fuzziness Analysis: A Case Study of the Nanpo Dump of the Chengmenshan Copper Mine

Table 1

Statistics of rock and soil parameters.

Number		Soil-rock mixture			Basement rock
		Cohesion c (kPa)	Internal friction angle	Bulk density	Cohesion c (kPa)	Internal friction angle	Bulk density
Original 20 samples	1	38.3	23.5	17.3	913	17.1	26.5
	2	41.4	20.5	16.9	918.82	17.66	22.07
	3	39.9	26.2	17.1	914.5	17.27	22.24
	4	34.3	20.4	17.6	909.8	16.87	22.82
	5	38.1	25	18.3	904.1	14.94	19.16
	6	43.1	24	17.1	912.8	18.422	27.76
	7	41.5	24.1	17.0	915.5	18.21	25.31
	8	36.4	22	17.6	910.7	14.75	22.93
	9	45	25	19.7	909.2	16.78	27.61
	10	41.4	25.96	17.2	902	18.035	20.834
	11	43.4	26	17.83	914.7	14.807	27.83
	12	38.2	20.1	16.16	909.7	16.976	27.79
	13	40.5	19.8	17.92	907.9	19.55	18.98
	14	44.3	23.7	16.07	926	19.8	18.55
	15	32.4	23.3	17.9	882	17.1	24.37
	16	37.8	24	17.64	919.7	16.78	24.06
	17	35.6	23.5	14.7	900.6	13.07	25.3
	18	35.6	22	17.3	911.9	17.58	25.29
	19	35.8	20.5	17.6	917.2	13.59	22.69
	20	36.1	23.96	22.22	917.8	17.1	24.53
14 sets of samples after expansion	21	36	24.3	19.92	886	15.2	24.7
	22	46.9	19.8	16.4	892.2	13.3	27.9
	23	41.9	19.69	19.42	931.1	19.74	24.23
	24	36.4	27	18.8	908.5	18.87	18.08
	25	38.8	24.7	13.9	919.2	12.97	25.81
	26	32.2	22.7	22.1	923.4	12.87	19.6
	27	42.1	19.94	17.4	882.7	17.92	21.23
	28	33.8	23.28	14.62	918.3	15.81	17.81
	29	43.4	25.61	15.4	898.5	20.12	18.3
	30	37.3	19.84	23.1	902.9	17.38	23.5
	31	39.9	23.28	17.73	916.6	19.3	28.5
	32	39.5	26.31	22.54	913.8	17.2	18.7
	33	40.3	22.9	18.18	920.8	16.4	28.3
	34	42.7	25.4	16.81	881.2	20.03	26.9
34 sets of samples after expansion	Mean	39.2	23.39	17.86	909.2	16.86	23.53
	Standard deviation	3.69	2.20	2.12	12.36	2.09	3.37
Original 20 samples	Mean	39	23.18	17.64	908.7	16.78	23.7
	Standard deviation	3.45	2	2.01	6.25	2.02	3.23