Research on Migration of Flying Gangue Based on Geographic Information System in Steeply Dipping Coal Seam

doi:10.12422/j.issn.1672-6952.2024.02.012

Abstract

Abstract:

In view of the irregularity of the bottom floor of working face and the diversity of the shape of the flying gangue in steeply dipping coal seam, based on the geographic information system data such as contour line of bottom floor of working face, the 3d grid model of bottom floor is established, combined with the energy tracking method(ETM) C + + programs, four typical shapes of flying gangue with the same mass and different shapes are simulated to obtain the motion trajectories of the migration of flying gangue in the actual working face, as well as the velocity, angular velocity and energy change curves at any time. The influence of the shapes on the motion of flying gangue is analyzed. In order to verify the accuracy and feasibility of the method in this paper, the trajectory simulated by Rockyfor3D software is compared. The results show that the transport capacity of ellipsoidal flying gangue is much higher than that of polyhedral flying gangue. Compared with common polyhedral flying gangue, the regular polyhedral flying gangue has farther migration distance and less energy loss due to collision. The number of edges of flying gangue of regular polyhedron is inversely proportional to the energy loss of flying gangue in collision, which indicates that flying gangue of regular polyhedron with multiple edges is most likely to cause danger．

Key words: Geographic information system, Steeply dipping coal seam, Flying gangue, Energy tracking method, Migration

摘要：

针对大倾角煤层工作面底板的不规则性和飞矸形状的多样性，利用工作面底板等高线等地理信息系统数据建立真实工作面底板三维网格模型，结合能量跟踪法（ETM）自编C++程序，模拟得到相同质量不同形状的四类典型形状飞矸在实际工作面运移的运动轨迹，以及任意时刻的线速度、角速度和能量变化曲线，分析了形状对飞矸运移规律的影响。为验证本文方法的准确性和可行性，与采用Rockyfor3D软件模拟的轨迹进行了对比。结果表明，椭球体飞矸的运移能力远大于多面体飞矸；正多面体飞矸比一般多面体飞矸运移距离更远，碰撞的能量损失更小；正多面体飞矸的棱边数与飞矸在碰撞中的能量损失量成反比，多棱边正多面体飞矸造成危险的可能性最大。

关键词: 地理信息系统, 大倾角煤层, 飞矸, 能量跟踪法, 运移

CLC Number:

TD823

Haochen WANG, Ming LIU, Jie CHEN. Research on Migration of Flying Gangue Based on Geographic Information System in Steeply Dipping Coal Seam[J]. Journal of Liaoning Petrochemical University, 2024, 44(2): 77-82.

王浩宸, 刘明, 陈杰. 基于地理信息系统的大倾角煤层飞矸运移研究[J]. 辽宁石油化工大学学报, 2024, 44(2): 77-82.

Figures/Tables 9

Fig.1 Occurrence space of flying gangue disaster

Fig.2 Multi?point collision model

Fig.3 Contour line and drilling information of bottom floor

Fig.4 The grid model of working face

Fig.5 Analysis results of working face inclination based on Rlockyfor3D software

Fig.6 3D model of bottom floor of working face

Fig.7 Comparison of the movement trajectory and lateral deviation of flying dirt along the working face

Fig.8 Comparison of moving track of flying gangue

Fig.9 Comparison of energy of flying gangue

References 19

1	伍永平，贠东风，解盘石，等. 大倾角煤层长壁综采：进展、实践、科学问题［J］. 煤炭学报， 2020， 45（1）： 24⁃34.
	WU Y P， YUAN D F， XIE P S， et al. Progress， practice and scientific issues in steeply dipping coal seams fully⁃mechanized mining［J］. Journal of China Coal Society， 2020， 45（1）： 24⁃34.
2	伍永平，刘孔智，贠东风，等. 大倾角煤层安全高效开采技术研究进展［J］. 煤炭学报， 2014， 39（8）： 1611⁃1618.
	WU Y P， LIU K Z， YUAN D F， et al. Research progress on the safe and efficient mining technology of steeply dipping seam［J］. Journal of China Coal Society， 2014， 39（8）： 1611⁃1618.
3	刘明，李宽，多依丽，等.大倾角工作面顶板漏冒飞矸运动轨迹分析及防护装置［J］.煤炭科学技术，2020，48（8）：139⁃144.
	LIU M， LI K， DUO Y L， et al. Motion track analysis and protective device of flying gangue in roof leakage of steeply dipping working face［J］. Coal Science and Technology， 2020， 48（8）： 139⁃144.
4	TU H S， TU S H， YUAN Y， et al. Present situation of fully mechanized mining technology for steeply inclined coal seams in China［J］. Arabian Journal of Geosciences， 2015， 8（7）： 4485⁃4494.
5	刘明，耿霜，伍永平，等. 基于液压系统驱动的防矸装置设计［J］. 煤矿机械， 2020， 41（1）： 102⁃103.
	LIU M， GENG S， WU Y P， et al. Design of flying gangue protection device driven by hydraulic system［J］. Coal Mine Machinery， 2020， 41（1）： 102⁃103.
6	伍永平，胡博胜，王红伟，等. 大倾角煤层飞矸运移能量演化特征仿真与实验研究［J］. 西安科技大学学报， 2018， 38（1）： 37⁃42.
	WU Y P， HU B S， WANG H W， et al. Simulation and experiment research on the evolution characteristics of flying gangue energy in steeply dipping coal seam［J］. Journal of Xi′an University of Science and Technology， 2018， 38（1）：37⁃42.
7	伍永平，胡博胜，解盘石，等. 大倾角长壁工作面飞矸灾害区域治理技术［J］. 煤炭科学技术， 2017， 45（2）： 1⁃5.
	WU Y P， HU B S， XIE P S， et al. Flying gangue regional control technology in longwall mining face of steeply dipping seam［J］. Coal Science and Technology， 2017， 45（2）： 1⁃5.
8	伍永平，胡博胜，解盘石，等. 大倾角工作面飞矸冲击损害及其控制［J］. 煤炭学报， 2018， 43（10）： 2694⁃2702.
	WU Y P， HU B S， XIE P S， et al. Impact damage of flying gangue in steeply dipping seams and its control［J］. Journal of China Coal Society， 2018， 43（10）： 2694⁃2702.
9	伍永平，胡博胜，王红伟，等. 大倾角煤层长壁开采工作面飞矸致灾机理研究［J］. 煤炭学报， 2017， 42（9）： 2226⁃2234.
	WU Y P， HU B S， WANG H W， et al. Mechanism of flying gangue⁃caused disasters in longwall mining of steeply dipping seam［J］. Journal of China Coal Society， 2017， 42（9）： 2226⁃2234.
10	WU Y P， HU B S， LANG D， et al. Risk assessment approach for rockfall hazards in steeply dipping coal seams［J］. International Journal of Rock Mechanics and Mining Sciences， 2021， 138： 104626.
11	HU B S， WU Y P， WANG H W， et al. Risk mitigation for rockfall hazards in steeply dipping coal seam： A case study in Xinjiang， northwestern China［J］. Geomatics， Natural Hazards and Risk， 2021， 12（1）： 988⁃1014.
12	胡博胜. 大倾角煤层长壁工作面飞矸动力损害与控制［J］. 岩石力学与工程学报， 2022， 41（12）： 2592.
	HU B S. Damage mechanism and control of flying⁃gangue hazard in longwall mining of steeply dipping coal seams［J］. Chinese Journal of Rock Mechanics and Engineering， 2022， 41（12）： 2592.
13	景玲玲. 基于区间方法的大倾角煤层飞矸动力学特征量研究［D］.西安：西安科技大学，2020.
14	刘明，周一童，吕文玉. 随机参数下大倾角煤层开采飞矸运动法向特征量理论［J］. 煤炭学报， 2021， 46（7）： 2237⁃2244.
	LIU M， ZHOU Y T， LÜ W Y. Normal characteristic quantity theory of flying gangue motion in steeply dipping seam with stochastic parameters［J］. Journal of China Coal Society， 2021， 46（7）： 2237⁃2244.
15	王淳，刘明，刘晓培，等. 大倾角煤层开采飞矸随机运动研究［J］. 能源与节能， 2022（6）： 29⁃31.
	WANG C， LIU M， LIU X P， et al. Random motion of flying gangue in steeply dipping seams［J］. Energy and Energy Conservation， 2022（6）： 29⁃31.
16	刘明，周一童，伍永平，等. 基于动态贝叶斯网络的大倾角工作面飞矸威胁等级评估［J］. 煤炭科学技术， 2021， 49（11）： 99⁃104.
	LIU M， ZHOU Y T， WU Y P， et al. Threat evaluation of flying gangues in steeply dipping seam based on dynamic Bayesian network［J］. Coal Science and Technology， 2021， 49（11）： 99⁃104.
17	刘明，伍永平，耿霜，等. 大倾角煤层开采飞矸威胁等级评估［J］. 煤炭学报， 2020， 45（11）： 3688⁃3695.
	LIU M， WU Y P， GENG S， et al. Threat level assessment of flying gangue in steep coal seam mining［J］. Journal of China Coal Society， 2020， 45（11）： 3688⁃3695.
18	陈杰. 基于能量跟踪法的大倾角煤层飞矸运移规律研究［D］.抚顺：辽宁石油化工大学，2023.
19	LIU M， CHEN J. Movement and protection for random shape rockfalls in steeply dipping coal seams［J］. Advances in Civil Engineering， 2021， 2021： 9965415.

[1]	XiangNan, LiuDaqian, HuangYue, WangShuai, . Design and Implementation of Digital Oil Depot Based on Arc GIS [J]. Journal of Liaoning Petrochemical University, 2017, 37(1): 65-69.
[2]	Cao Yang, Zhang Liqun, Zhang Zhihao, Yang Jingrong. Water Source in Inner Mongolia based on GIS [J]. Journal of Liaoning Petrochemical University, 2016, 36(2): 60-63.