Case Study on the Mechanism of Influence of Stoppage on Ground Pressure under Different Rates of Advance

Table 4

Design of different face-advance schemes.

Serial number	Programme	Unit mining depth (m)	Advance speed (m/d)	Advance time steps of primary mining	Total steps
1	Advancing 100 m	5	5	2000	40000
2	Advancing 100 m and stopping for 1 day	5	5	4000	42000
3	Advancing 100 m and stopping for 2 days	5	5	6000	44000
4	Advancing 100 m and stopping for 3 days	5	5	8000	46000
5	Advancing 100 m	10	10	2000	20000
6	Advancing 100 m and stopping for 1 day	10	10	4000	22000
7	Advancing 100 m and stopping for 2 days	10	10	6000	24000
8	Advancing 100 m and stopping for 3 days	10	10	8000	26000
9	Advancing 100 m	15	15	2000	14000
10	Advancing 100 m and stopping for 1 day	15	15	4000	16000
11	Advancing 100 m and stopping for 2 days	15	15	6000	18000
12	Advancing 100 m and stopping for 3 days	15	15	8000	20000
13	Advancing 100 m	20	20	2000	10000
14	Advancing 100 m and stopping for 1 day	20	20	4000	12000
15	Advancing 100 m and stopping for 2 days	20	20	6000	14000
16	Advancing 100 m and stopping for 3 days	20	20	8000	16000