Research on Safety Monitoring System for Digital Twin Fully Mechanized Mining Face in Thin Coal Seams

doi:10.16182/j.issn1004731x.joss.25-0763

Abstract

Abstract:

To solve the problems of opaque production processes, difficult expression of production information, and high difficulty in real-time model driving and safety monitoring in fully mechanized mining faces of thin coal seams, studying the use of digital twin technology and risk early warning models to solve beyond-visual-range visual production operations and safety monitoring control of the working face has important theoretical and practical value. This paper studied the construction methods of the digital twin system for fully mechanized mining faces in thin coal seams and discussed the construction of high-precision three-dimensional models, the real-time collection and processing conversion of massive data, the visualization of production data and construction of digital twin scenes, and the construction of risk early warning models. Regarding the technical realization of risk early warning models, models for collision risk early warning, support pressure early warning, and collision early warning for triangular coal and abnormal areas were designed, and the real working face system construction and application tests were carried out based on the research content. The verification results demonstrate that the system is effective.

Key words: risk early warning, digital twin, thin coal seam, safety monitoring

CLC Number:

TP391.9

Liu Ya, Zhang Zhaoyun, An Cheng, Zheng Canguang. Research on Safety Monitoring System for Digital Twin Fully Mechanized Mining Face in Thin Coal Seams[J]. Journal of System Simulation, 2026, 38(7): 1922-1934.

Figures/Tables 14

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Table 1

Strategy of anti-collision

序号	状态	安全距离范围	颜色	采煤机控制指令
1	安全	L $≥$ 10%D	绿色	采煤机正常运行
2	预警	5%D< L <10%D	黄色	谨慎监控，限制摇臂提升(速度低于10 m/min，具体需要调试测试)
3	碰撞	L $≤$ 5%D	红色	停止采煤机牵引。待滚筒降低高度至预警区间，采煤机可正常启动

Table 1

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序号	状态	阈值范围/Mpa	颜色	控制指令
1	过压预警	>40	红色	弹窗预警，停机指令下发
2	过压提醒	(38, 40)	黄色	弹窗预警
3	正常	[24, 38]	绿色	弹窗预警
4	欠压预警	< 24	黄色	弹窗预警

序号	日期	碰撞干预停机	碰撞预警	生产刀数	基于横向/垂向距离碰撞预警	滚筒与支架外轮廓最短计算距离/mm	滚筒与支架外轮廓对应实测距离/mm
1	2024-03-01	0	2	2	2	22	14
2	2024-03-14	0	0	0	—	—	—
3	2024-03-15	0	1	3	1	35	—
4	2024-03-16	0	1	3	2	33	—
5	2024-03-17	0	0	0	—	100	90
6	2024-03-18	3	4	4	4	25	—
7	2024-03-19	2	5	1.5	6	40	—
8	2024-03-20	0	1	2	—	56	—
9	2024-03-21	1	1	1.5	1	40	—
10	2024-03-22	1	1	3	1	0	20

工作面	日期	过压预警支架数	过压提醒支架数	正常支架数	欠压支架数
1	2024-05-10	8	72	10	4
1	2024-05-11	9	71	10	4
1	2024-05-11	9	70	11	4
2	2025-8-20	0	2	150	7
2	2025-8-21	0	3	149	7
2	2025-8-22	1	2	150	6

工作面	日期	三角煤区域支架号	三角煤区域是否预警	异常支架号
1	2024-05-10	—	是	10,75
1	2024-05-11	13,14,15,79,80,81	否	10,75
1	2024-05-11	13,14,15,79,80,81	否	10,75