煤矿掘进巷道断面尺寸变化对噪声传播的影响

doi:10.16265/j.cnki.issn1003-3033.2024.04.1292

中国安全科学学报 ›› 2024, Vol. 34 ›› Issue (4): 77-86.doi: 10.16265/j.cnki.issn1003-3033.2024.04.1292

煤矿掘进巷道断面尺寸变化对噪声传播的影响

杨明¹^,²^,³(), 贾改妮¹^,^**(), 全星苑¹, 张学博¹^,²^,³, 刘毛毛¹

¹ 河南理工大学安全科学与工程学院,河南焦作 454003
² 河南理工大学煤炭安全生产与清洁高效利用省部共建协同创新中心,河南焦作 454003
³ 河南理工大学瓦斯地质与瓦斯治理省部共建国家重点实验室培育基地,河南焦作 454003

收稿日期:2023-11-10 修回日期:2024-01-16 出版日期:2024-04-28
通讯作者:
**贾改妮(1991—),女,河南周口人,博士研究生,主要研究方向为矿井职业健康与安全。E-mail: 849768108@qq.com。
作者简介:
杨明 (1982—),男,安徽怀宁人,博士,教授,主要从事于矿井通风与热害防治、瓦斯灾害防治、职业健康与安全等方面的研究。E-mail: yming@hpu.edu.cn。
张学博副教授
基金资助:
国家自然科学基金资助(52274186); 国家自然科学基金资助(52274187); 河南省高校基本科研业务费专项(NSFRF200317); 河南省高等学校青年骨干教师培养计划项目(2020GGJS053)

Effect of variation of cross-section dimensions on noise propagation in coal mine excavation roadway

YANG Ming¹^,²^,³(), JIA Gaini¹^,^**(), QUAN Xingyuan¹, ZHANG Xuebo¹^,²^,³, LIU Maomao¹

¹ School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454003, China
² State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization, Henan Polytechnic University,Jiaozuo Henan 454003, China
³ State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University,Jiaozuo Henan 454003, China

Received:2023-11-10 Revised:2024-01-16 Published:2024-04-28

摘要/Abstract

摘要：

为研究煤矿掘进巷道长空间内断面尺寸变化对噪声传播的影响,采用仿真模拟方法研究巷道内噪声传播,分析煤矿掘进巷道断面积大小、断面形状及断面面积突变率的变化对巷道内噪声传播影响。结果表明:煤矿掘进巷道内断面面积大小、断面形状及断面面积突变率均会影响巷道内噪声的传播,当噪声源功率、频率相同时,声压级衰减随巷道截面积增大而增大;对于给定的断面面积(18 m²),当断面形状不同时,声压级衰减也不同,且断面形状为拱形时会产生明显的声聚焦效应,不利于噪声衰减;当断面面积发生突变时,巷道内的声压级分布会有所变化,其中断面面积由大变小时不利于噪声的衰减,断面面积由小变大时仅影响突变后的声场,而对巷道内整体声压级影响并不明显;巷道内噪声衰减现场测试与数值模拟结果基本一致,验证了搭建的模型及模拟结果的可靠性。

关键词: 煤矿掘进巷道, 断面形状, 噪声传播, 掘进机, 断面面积突变率

Abstract:

In order to study the influence of section size change on noise propagation in long space of coal mine roadway, the simulation method was used to study the noise propagation in the roadway, and to analyze the influence of the changes of section area size, section shape and section area mutation rate on the noise propagation in the roadway of coal mine roadway. The results showed that: the section area size, section shape and section area mutation rate in coal mine tunneling would affect the propagation of noise in the tunnel, when the noise source power and frequency were the same, the attenuation of the sound pressure level increased with the increase of the section area of the roadway. For a given section area (18 m²), when the section shape was different, the attenuation of the sound pressure level was also different, and there would be an obvious acoustic focusing effect when the section shape was arch-shaped. When the cross-section area changed abruptly, the distribution of sound pressure level in the roadway would change, in which the change of cross-section area from large to small was not conducive to noise attenuation, and the change of cross-section area from small to large only affected the sound field after the abrupt change, and the overall sound pressure level in the roadway is not significant. The field test and numerical simulation results of noise attenuation in the tunnel were basically consistent, which verified the reliability of the model and simulation results.

Key words: coal mine excavation roadway, section shape, noise propagation, roadheader, sectional area mutation rate

中图分类号:

X966

杨明, 贾改妮, 全星苑, 张学博, 刘毛毛. 煤矿掘进巷道断面尺寸变化对噪声传播的影响[J]. 中国安全科学学报, 2024, 34(4): 77-86.

YANG Ming, JIA Gaini, QUAN Xingyuan, ZHANG Xuebo, LIU Maomao. Effect of variation of cross-section dimensions on noise propagation in coal mine excavation roadway[J]. China Safety Science Journal, 2024, 34(4): 77-86.

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声源距离/m	截面积/m²
声源距离/m	3	9	18
0.1	129.78	125.94	119.41
10	111.93	108.35	97.27
20	95.93	94.90	87.14
30	88.03	85.24	81.77
40	82.09	79.29	74.28
50	78.68	73.21	66.89
60	77.36	66.50	60.89
70	70.06	64.45	56.09
80	63.10	58.99	54.55
90	59.31	58.27	50.38
100	55.34	53.51	49.00

声源距离/m	截面形状
声源距离/m	正方形	梯形	拱形
0.1	118.44	123.68	117.21
10	100.94	101.19	107.07
20	89.96	89.15	97.52
30	84.31	83.23	93.45
40	78.38	75.83	88.14
50	67.33	68.18	80.64
60	65.36	61.68	75.44
70	65.18	58.74	70.56
80	53.19	56.93	74.95
90	51.36	52.50	74.04
100	55.64	55.74	69.12

煤矿掘进巷道断面尺寸变化对噪声传播的影响

Effect of variation of cross-section dimensions on noise propagation in coal mine excavation roadway

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