新登矿破碎顶板裂隙发育演化特征与分区支护技术

doi:10.16265/j.cnki.issn1003-3033.2025.08.1713

摘要/Abstract

摘要：

为解决破碎顶板煤层巷道支护困难的问题,采用岩层探测记录仪,在新登矿煤层巷道进行测试,分析围岩裂隙演化特征,引入巷道直接顶岩性R、顶板破碎系数β,将其作为巷道围岩稳定性的评价指标,并将巷道围岩分为支护容易区、较容易区、较困难区和困难区4类,针对每一类围岩给出具体支护参数;然后运用分区支护技术在新登矿+90北翼瓦斯抽放硐室进行现场应用,支护效果良好。研究表明:顶板围岩状态呈现分区性,由浅部向深部可依次划分为浅部破碎带、破碎裂隙混合带、裂隙发育带和围岩完整带;通过裂隙分析指标得出,顶板裂隙区宽度随时间不断向围岩深部扩展,裂隙数量逐渐增多,原有架棚支护无法有效控制围岩完整性的持续劣化。

关键词: 破碎顶板, 钻孔窥视, 裂隙发育, 分区支护, 煤层巷道

Abstract:

To solve the challenges in supporting fractured roof coal seam roadways, a rock layer detection recorder was used to conduct tests on the coal seam roadways at Xindeng mine. The analysis focused on the evolution characteristics of surrounding rock fractures. The R value for the direct roof rock and the β coefficient for roof fragmentation were introduced as evaluation indicators for roadway surrounding rock stability. The surrounding rock was categorized into four types: easy to support, relatively easy to support, relatively difficult to support, and difficult to support. Specific support parameters were provided for each category. Zoned support technology was applied in the gas drainage chamber of +90 North wing of Xindeng mine, achieving excellent support results. The study shows that the state of the roof surrounding rock is zoned, with the shallow fractured zone, followed by the fractured-fracture mixed zone, the developed fracture zone, and the intact surrounding rock zone. Through fracture analysis, it is found that the width of the roof fracture zone gradually expands to the deep surrounding rock over time, and the number of fractures also increases. The existing support cannot effectively control the continuous deterioration of the surrounding rock integrity.

Key words: fractured roof, borehole peeping, fracture development, zoned support, coal seam roadway

中图分类号:

X936

陈蓥, 鲍世纪, 史明哲, 杨宏涛, 张子凯. 新登矿破碎顶板裂隙发育演化特征与分区支护技术[J]. 中国安全科学学报, 2025, 35(8): 100-109.

CHEN Ying, BAO Shiji, SHI Mingzhe, YANG Hongtao, ZHANG Zikai. Fracture development and evolution features of fractured roof in Xindeng mine and zoned support technology[J]. China Safety Science Journal, 2025, 35(8): 100-109.

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参考文献 19

[1]	康红普, 徐刚, 王彪谋, 等. 我国煤炭开采与岩层控制技术发展40a及展望[J]. 采矿与岩层控制工程学报, 2019, 1(2):7-39.
	KANG Hongpu, XU Gang, WANG Biaomou, et al. 40a and development of coal mining and rock layer control technology in China[J]. Journal of Mining and Strata Control Engineering, 2019, 1 (2): 7-39.
[2]	范东林, 王巍. 大采高工作面回风巷道支护参数优化研究[J]. 中国安全科学学报, 2022, 32(增2):166-171.
	FAN Donglin, WANG Wei. Study on optimization of supporting parameters of return air roadway in high mining working face[J]. China Safety Science Journal, 2022, 32 (S2): 166-171. doi: 10.16265/j.cnki.issn1003-3033.2022.S2.0098
[3]	李京, 胡斌, 刘艳章, 等. 回采巷道锚杆支护效果评判的改进突变级数法[J]. 中国安全科学学报, 2021, 31(3):60-65. doi: 10.16265/j.cnki.issn1003-3033.2021.03.009
	LI Jing, HU Bin, LIU Yanzhang, et al. Improved mutation series method for the evaluation of anchor bolt support effect in mining roadway[J]. China Safety Science Journal, 2021, 31 (3): 60-65. doi: 10.16265/j.cnki.issn1003-3033.2021.03.009
[4]	何峰, 王振伟, 于洋, 等. 复采巷道过破碎顶板区钢梁支护研究[J]. 煤炭科学技术, 2019, 47(7):115-120.
	HE Feng, WANG Zhenwei, YU Yang, et al. Research on steel beam support in overbroken roof area of remining roadway[J]. Coal Science and Technology, 2019, 47 (7): 115-120.
[5]	张杰, 高守世, 李通, 等. 软岩巷道底板破坏特征及控制研究[J]. 煤炭科学技术, 2023, 51(3):21-28.
	ZHANG Jie, GAO Shoushi, LI Tong, et al. Study on the characteristics and control of roof damage in soft rock roadways[J]. Coal Science and Technology, 2023, 51(3):21-28.
[6]	王平, 冯涛, 蒋运良, 等. 软弱再生顶板巷道围岩失稳机理及其控制原理与技术[J]. 煤炭学报, 2019, 44(10):2953-2965.
	WANG Ping, FENG Tao, JIANG Yunliang, et al. Mechanism and control principle and technology of surrounding rock instability in weak regenerated roof roadway[J]. Journal of China Coal Society, 2019, 44 (10): 2953-2965.
[7]	杨东启, 刘建庄, 王盛川, 等. 深井破碎围岩巷道协同支护技术研究与应用[J]. 煤炭工程, 2023, 55(1):32-36. doi: 10.11799/ce202301007
	YANG Dongqi, LIU Jianzhuang, WANG Shengchuan, et al. Research and application of collaborative support technology for deep well broken surrounding rock roadway[J]. Coal Engineering, 2023, 55 (1): 32-36. doi: 10.11799/ce202301007
[8]	高建成, 张宏伟, 荣海, 等. 高膨胀松软围岩巷道支护技术[J]. 煤矿安全, 2021, 52(1):92-97,102.
	GAO Jiancheng, ZHANG Hongwei, RONG hai, et al. High expansion of soft surrounding rock roadway support technology[J]. Safety in Coal Mines, 2021, 52 (1): 92-97,102.
[9]	孙广京, 王平, 冯涛, 等. 软弱破碎顶板巷道围岩变形机理及控制技术[J]. 煤炭科学技术, 2020, 48(5):209-215.
	SUN Guangjing, WANG Ping, FENG Tao, et al. Deformation mechanism and control technology of surrounding rock of soft and broken roof roadway[J]. Coal Science and Technology, 2020, 48 (5): 209-215.
[10]	余伟健, 李可, 芦庆和, 等. 裂隙发育岩体巷道围岩工程特征与变形控制[J]. 煤炭学报, 2021, 46(11):3408-3418.
	YU Weijian, LI Ke, LU Qinghe, et al. Engineering characteristics and deformation control of surrounding rock in fissure development[J]. Journal of China Coal Society, 2021, 46 (11): 3408-3418.
[11]	孟庆彬, 孙稳, 韩立军, 等. 深井软岩巷道群掘进扰动效应与控制技术研究[J]. 采矿与安全工程学报, 2021, 38(3):496-506.
	MENG Qingbin, SUN Wen, HAN Lijun, et al. Study on the disturbance effect and control technology of deep well soft rock roadway group[J]. Journal of Mining and Strata Control, 2021, 38 (3): 496-506.
[12]	王卫军, 范磊, 赵志强, 等. 基于塑性区控制的巷道围岩支护理论与技术研究进展[J]. 煤炭学报, 2024, 49(1):320-336.
	WANG Weijun, FAN Lei, ZHAO Zhiqiang, et al. Progress on theory and technology of roadway surrounding rock support based on plastic zone control[J]. Journal of China Coal Society, 2024, 49 (1): 320-336.
[13]	范育青, 刘玉成, 赵明洲, 等. 弱胶结软岩巷道围岩应力与位移分布规律及支护技术[J]. 煤炭工程, 2020, 52(4):84-91. doi: 10.11799/ce202004017
	FAN Yuqing, LIU Yucheng, ZHAO Mingzhou, et al. Law of stress and displacement distribution of surrounding rock of weak cemented soft rock roadway[J]. Coal Engineering, 2020, 52 (4): 84-91.
[14]	彭文庆, 朱豪, 汪琦. 破碎岩体巷道围岩承载结构应力分布规律[J]. 中南大学学报:自然科学版, 2023, 54(6):2447-2458.
	PENG Wenqing, ZHU Hao, WANG Qi. Stress distribution law of surrounding rock bearing structure in broken rock roadway[J]. Journal of Central South University:Science and Technology, 2023, 54(6):2447-2458.
[15]	贾后省, 张文彪, 刘少伟, 等. 不稳定厚煤层回采巷道极软顶板破坏规律及分级控制[J]. 岩石力学与工程学报, 2022, 41(增2):3306-3316.
	JIA Housheng, ZHANG Wenbiao, LIU Shaowei, et al. Destruction rule and grading control of extremely soft roof in mining roadway of unstable thick coal seam[J]. Chinese Journal of Rock mechanics and Engineering, 2022, 41 (S2): 3306-3316.
[16]	王思栋, 朱宗磊, 杨斌. 滨湖矿巷道围岩裂隙演化规律实测研究[J]. 煤矿安全, 2019, 50(10):66-70.
	WANG Sidong, ZHU Zonglei, YANG Bin. Measured study on the evolution law of surrounding rock fissure in lakeside mine roadway[J]. Safety in Coal Mines, 2019, 50 (10): 66-70.
[17]	芦楠楠, 陈永珩, 马占国, 等. 深部地下巷道围岩结构监测信息化技术研究[J]. 工矿自动化, 2019, 45(6):1-9.
	LU Nannan, CHEN Yongheng, MA Zhanguo, et al. Research on the information technology of monitoring of surrounding rock structure in deep underground roadway[J]. Industry and Mine Automation, 2019, 45 (6): 1-9.
[18]	李学华, 梁顺, 姚强岭, 等. 泥岩顶板巷道围岩裂隙演化规律与冒顶机理分析[J]. 煤炭学报, 2011, 36(6):903-908.
	LI Xuehua, LIANG Shun, YAO Qiangling, et al. Analysis of the evolution law and roof burst mechanism of surrounding rock fissure in mudstone roof roadway[J]. Journal of China Coal Society, 2011, 36 (6): 903-908.
[19]	焦建康, 张镇, 颜立新, 等. 中小型煤矿巷道围岩稳定性定量化评价及分级支护技术[J]. 采矿与安全工程学报, 2022, 39(3):598-606.
	JIAO Jiankang, ZHANG Zhen, YAN Lixin, et al. Quantitative evaluation of surrounding rock stability and grading support technology of small and medium-sized coal mines[J]. Journal of Mining and Strata Control, 2022, 39 (3): 598-606.

测试巷道	窥视时间	E/m	a	ΣW_i/m	RFD/%
22051 副巷	第1次	3.5	9	0.342	9.7
22051 副巷	第2次	4.3	12	0.541	12.6
22051 机巷	第1次	4.7	11	0.531	11.3
22051 机巷	第2次	5.8	16	0.836	14.4
22031进风绕巷	第1次	4.1	10	0.521	12.7
22031进风绕巷	第2次	6.8	23	1.202	17.7

直接顶岩性	砂岩	泥岩	煤层
R	R_Ⅰ	R_Ⅱ	R_Ⅲ
顶板强度类别	高	中	低

围岩类别	支护难度分区	参考指标
1	容易	R_Ⅰβ_Ⅰ、R_Ⅰβ_Ⅱ
2	较容易	R_Ⅰβ_Ⅲ、R_Ⅱβ_Ⅰ
3	较难	R_Ⅱβ_Ⅱ、R_Ⅲβ_Ⅰ
4	困难	R_Ⅱβ_Ⅲ、R_Ⅲβ_Ⅱ、R_Ⅲβ_Ⅲ