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LI Xiaopeng,LIU Shaowei,FU Mengxiong,et al. Research and application of influencing factors of key parameters of roof cutting and pressure relief by dense drilling[J]. Coal Science and Technology,2023,51(12):243−253

. DOI: 10.13199/j.cnki.cst.2023-0095
Citation:

LI Xiaopeng,LIU Shaowei,FU Mengxiong,et al. Research and application of influencing factors of key parameters of roof cutting and pressure relief by dense drilling[J]. Coal Science and Technology,2023,51(12):243−253

. DOI: 10.13199/j.cnki.cst.2023-0095

Research and application of influencing factors of key parameters of roof cutting and pressure relief by dense drilling

Funds: 

National Natural Science Foundation of China(52074102); Natural Science Outstanding Youth Fund of Henan Province (212300410006); Henan Province University Science and Technology Innovation Team Funding Project (23IRTSTHN007)

More Information
  • Received Date: January 31, 2023
  • Available Online: November 29, 2023
  • The technology of roof cutting by dense drilling is mainly through the transformation of the surrounding rock structure of the lateral roof of the stope, and the use of overburden load and roof weight to cut off the basic roof can effectively reduce the roof pressure of the roadway. This paper analyzes the key parameters of drilling and the effect of retaining roadway by analyzing the roof cutting and pressure relief by dense drilling technology along the empty roadway in some mines in China, and studies the main influencing factors of the key parameters of roof cutting by dense drilling. The results show that the technology of roof cutting by dense drilling is suitable for coal seams with different thicknesses, and the effect of roof cutting depends on whether the cutting height, cutting angle, drilling diameter and spacing are reasonable. Because the roof is not completely broken before recovery when the roof is cut by dense drilling, after recovery, the greater the thickness of the coal seam, the greater the tensile stress generated by the roof subsidence and rotation around the drilling, the more easily the roof with the dense drilling is to break, and the increase of coal thickness is conducive to the independent breaking of the roof. The roof cutting height of dense drilling increases with the increase of coal thickness and main roof thickness. With the increase of coal thickness, the influence of drilling angle on roof cutting gradually decreases, and the drilling angle shows a decreasing trend. The combined effect of dense drilling aperture and spacing affects the fracture effect of roof with dense drilling. The D / B value (the ratio of drilling spacing to drilling diameter) increases with the increase of coal thickness within a certain range, and decreases with the increase of main roof strength. According to the statistical results, the engineering analogy method is adopted, and combined with the research results of the main influencing factors of roof cutting by dense drilling, the method for determining the key parameters of roof cutting by dense drilling is put forward. The test of roof cutting by dense drilling and retaining roadway is carried out in the return laneway of 11210 working face in Zhaojiazhai Mine. The effect of roadway retaining is good, which proves that the method is practical and effective, and has certain engineering reference value.

  • [1]
    陈 勇,柏建彪,朱涛垒,等. 沿空留巷巷旁支护体作用机制及工程应用[J]. 岩土力学,2012,33(5):1427−1432.

    CHEN Yong,BAI Jianbiao,ZHU Taolei, et al. Mechanisms of roadside support in gob-side entry retaining and its application[J]. Rock and Soil Mechanics,2012,33(5):1427−1432.
    [2]
    何满潮,陈上元,郭志飚,等. 切顶卸压沿空留巷围岩结构控制及其工程应用[J]. 中国矿业大学学报,2017,46(5):959−969.

    HE Manchao,CHEN Shangyuan,GUO Zhibiao, et al. Control of surrounding rock structure for gob-side entry retaining by cutting roof to release pressure and its engineering application[J]. Journal of China University of Mining & Technology,2017,46(5):959−969.
    [3]
    糜瑞杰,辛青峰,李 尧,等. 沿空留巷切顶技术研究与应用[J]. 山西煤炭,2022,42(1):25−32.

    MI Ruijie,XIN Qingfeng,LI Yao, et al. Research and application of roof cuting technology for gob-side entry retaining[J]. Shanxi coal,2022,42(1):25−32.
    [4]
    齐庆新,李一哲,赵善坤,等. 我国煤矿冲击地压发展70年:理论与技术体系的建立与思考[J]. 煤炭科学技术,2019,47(9):1−40.

    QI Qingxin,LI Yizhe,ZHAO Shankun, et al. Seventy years development of coal mine rockburst in China:establishment and consideration of theory and technology system[J]. Coal Science and Technology,2019,47(9):1−40.
    [5]
    周府伟. 三软煤层超前钻孔弱化引导切顶留巷技术研究[D]. 西安:西安科技大学,2019.

    ZHOU Fuwei. Research on the technique of guiding gob-side entry formed by advanced roof caving with weaking bore in three-soft coal seam[D]. Xi’an:Xi’an University of Science and Technology,2019.
    [6]
    杨竹军. 厚煤层区段小煤柱切顶护巷研究及应用[J]. 煤炭工程,2019,51(5):82−86.

    YANG Zhujun. Research and practice of cutting pole protection for narrow coal pillarin thick coal seam section of changping coal mine[J]. Coal Engineering,2019,51(5):82−86.
    [7]
    李东印,张景轩,郑立军,等. 密集钻孔弱化底分层顶板沿空留巷技术[J]. 煤矿安全,2022,53(7):111−118,125.

    LI Dongyin,ZHANG Jingxuan,ZHENG Lijun, et al. Dense boreholes for weakening bottom layer by cutting roof and pressure relief of gob-side entry retaining[J]. Safety in Coal Mines,2022,53(7):111−118.
    [8]
    回新冬. 区段窄煤柱承载演化特征及稳定性控制[D]. 徐州:中国矿业大学,2021.

    HUI Xindong. Bearing evolution characteristics and stability control of narrow coal pillar in section[D]. Xuzhou:China University of Mining and Technology,2021.
    [9]
    申 乾. 密集钻孔切顶卸压机理及应用[D]. 徐州:中国矿业大学,2020.

    SHEN Qian. Mechanism and application of pressure relief for roof cutting with dense drilling[D]. Xuzhou:China University of Mining and Technology,2020.
    [10]
    杨 强. 滨湖煤矿16207材料巷密集钻孔切顶留巷原理及应用[D]. 徐州:中国矿业大学,2021.

    YAN Qiang. Principle and application of dense borehole cutting roof and retaining roadway in 16207 material roadway of Binhu Coal Mine[D]. Xuzhou:China University of Mining and Technology,2021.
    [11]
    王夫榕. 沿断层区段异形煤柱护巷围岩变形破坏特征及控制[D]. 徐州:中国矿业大学,2022.

    WANG Furong. Manifestation characteristics and control of roadway surrounding rocks deformation and failure along irregular section fault coal pillar[D]. Xuzhou:China University of Mining and Technology,2022.
    [12]
    姚强岭,王夫榕,马守龙,等. 正断层区段异形煤柱护巷矿压显现特征及控制[J]. 采矿与安全工程学报,2022,39(6):1095−1107.

    YAO Qiangling,WANG Furong,MA Shoulong, et al. Characteristics and control of strong underground pressure appear under irregular section normal fault roadway pillar[J]. Journal of Mining & Safety Engineering,2022,39(6):1095−1107.
    [13]
    孙延斌,宋厚武,彭向锋. 沿断层异形区段煤柱密集钻孔卸压护巷技术研究[J]. 煤炭工程,2023,55(3):36−40.

    SUN Yanbin,SONG Houwu,PENG Xiangfeng. Dense drilling pressure relief in irregular district pillar along fault[J]. Coal Engineering,2023,55(3):36−40.
    [14]
    赵 毅,解洪鑫,姚强岭. 宋新庄煤矿顶板密集钻孔切顶卸压护巷技术研究[J]. 煤炭工程,2023,55(5):45−51.

    ZHAO Yi,XIE Hongxin,YAO Qiangling. Roof cutting and pressure relief with dense drilling for roadway protection in Songxinzhuang Coal Mine[J]. Coal Engineering,2023,55(5):45−51.
    [15]
    姜 泽. 12511轨道顺槽密集钻孔卸压护巷技术应用[J]. 江西煤炭科技,2023(1):25−27,30.

    JIANG Ze. Application of intensive drilling pressure relief roadway protection technology in 12511 track entry[J]. Jiangxi Coal Science and Technology,2023(1):25−27,30.
    [16]
    宋 权. 密集孔切顶卸压技术在无煤柱开采中应用研究[J]. 煤矿现代化,2022,31(5):40−43,47. doi: 10.3969/j.issn.1009-0797.2022.05.011

    SONG Quan. Research on application of dense hole cutting roof pressure relieftechnology in pillarless mining[J]. Coal Mine Modernization,2022,31(5):40−43,47. doi: 10.3969/j.issn.1009-0797.2022.05.011
    [17]
    秦 超. 厚煤层综放工作面沿空留巷技术研究[J]. 水力采煤与管道运输,2018(3):107−109.

    QING Chao. Research on gob-side entry retaining technology in fully mechanized caving face of thick coal seam[J]. Hydraulic Coal Mining & Pipeline Transportation,2018(3):107−109.
    [18]
    王会敏. 厚煤层综放开采钻孔切顶留巷支护技术研究[J]. 石化技术,2019,26(10):332−333.

    WANG Huiming. Research on support technology of drilling roof cutting retaining roadway in fully mechanized caving mining of thick coal seam[J]. Petrochemical Industry Technology,2019,26(10):332−333.
    [19]
    李跃华. 综放工作面钻孔断顶沿空留巷技术应用研究[J]. 能源与环保,2019,41(8):192−196.

    LI Yuehua. Application research on gob-side entry retaining technology in fully-mechanizedtop-coal caving face with broken roof[J]. China Energy and Environmental Protection,2019,41(8):192−196.
    [20]
    尉永邦. 塔山山4#层密集卸压孔切顶卸压小煤柱开采技术[J]. 同煤科技,2020(3):4−6,9.

    WEI Yongbang. Mining technology of small coal pillar with top cutting pressure-relief through dense pressurerelief holes in no. 4 coal seam of shanxi formation in Tashan Coal Mine[J]. Datong Coal Science & Technology,2020(3):4−6,9.
    [21]
    刘晓龙. 顺槽沿空留巷弱化孔切顶及加强支护技术应用研究[J]. 山东煤炭科技,2022,40(2):22−25.

    LIU Xiaolong. Study and application of weakening hole roof cutting and strengthening support technology of gob-side roadway along trench[J]. Shandong Coal Science and Technology,2022,40(2):22−25.
    [22]
    朱晓庆. 雁崖矿8305工作面切巷坚硬顶板密集钻孔联合深孔爆破预裂技术[J]. 同煤科技,2021(4):12−14.

    ZHU Xiaoqing. Combined deep hole blasting presplitting technology of dense drillingin hard roof of cutting roadway in 8305 working face of yanya mine[J]. Datong Coal Science & Technology,2021(4):12−14.
    [23]
    曹泽峰. 密集钻孔技术在东瑞煤矿切顶卸压的应用[J]. 山东煤炭科技,2022,40(2):72−74. doi: 10.3969/j.issn.1005-2801.2022.02.026

    CAO Zefeng. Application of dense drilling technology in top cutting and pressure relief in Dongrui Coal Mine[J]. Shandong Coal Science and Technology,2022,40(2):72−74. doi: 10.3969/j.issn.1005-2801.2022.02.026
    [24]
    黄 林. 长榆河煤矿103工作面切顶卸压沿空留巷设计[J]. 煤矿现代化,2022,31(4):13−15,20. doi: 10.13606/j.cnki.37-1205/td.2022.04.008

    HUANG Lin. Design of roof cutting and pressure relief in 103 working face of Changyuhe Coal Mine[J]. Coal Mine Modernization,2022,31(4):13−15,20. doi: 10.13606/j.cnki.37-1205/td.2022.04.008
    [25]
    秦玉成,王宏越. 密集小钻孔切顶卸压技术在党家河煤矿108工作面的应用[J]. 现代矿业,2020,36(12):199−200,203. doi: 10.3969/j.issn.1674-6082.2020.12.060

    QIN Yucheng,WANG Hongyue. Application of roof cutting and pressure relief technology by dense small drilling in the 108 working face of Dangjiahe Coal Mine[J]. Modern Mining,2020,36(12):199−200,203. doi: 10.3969/j.issn.1674-6082.2020.12.060
    [26]
    张 盛,王小良,吴自强,等. 切顶卸压沿空留巷爆破孔关键参数选择及留巷效果现状分析[J]. 河南理工大学学报(自然科学版),2019,38(6):1−9.

    ZHANG Sheng,WANG Xiaoliang,WU Ziqiang, et al. Status analysis of the key parameters of blasting borehole and the retaining effect for gob-side entry retaining by the way of roof cutting and pressure releasing[J]. Journal of Henan Polytechnic University(Natural Science),2019,38(6):1−9.
    [27]
    何满潮,郭鹏飞,王 炯,等. 禾二矿浅埋破碎顶板切顶成巷试验研究[J]. 岩土工程学报,2018,40(3):391−398.

    HE Manchao,GUO Pengfei,WANG Jiong, et al. Experimental study on gob-side entry formed by roof cut of broken roof at shallow depth of Hecaogou No. 2 Coalmine[J]. Chinese Journal of Geotechnical Engineering,2018,40(3):391−398.
    [28]
    郭鹏飞,张国锋,陶志刚. 坚硬软弱复合顶板切顶卸压沿空留巷爆破技术[J]. 煤炭科学技术,2016,44(10):120−124.

    GUO Pengfei,ZHANG Guofeng,TAO Zhigang. Blasting technology of gateway retaining along goaf pressure release by roof cutting in hard and weak complex roof[J]. Coal Science and Technology,2016,44(10):120−124.
    [29]
    何满潮,郭鹏飞,张晓虎,等. 基于双向聚能拉张爆破理论的巷道顶板定向预裂[J]. 爆炸与冲击,2018,38(4):795−803.

    HE Manchao,GUO Pengfei,ZHANG Xiaohu,et al. Directional presplitting of roadway roof based on two-way energy-gathering tension blasting theory[J]. Explosion and Shock Waves,2018,38(4):795−803.
    [30]
    王 炯,刘雨兴,马新根,等. 塔山煤矿综采工作面切顶留巷技术[J]. 煤炭科学技术,2019,47(2):27−34.

    WANG Jiong,LIU Yuxing,MA Xingen, et al. Technology of roof cutting and entry retaining in fully-mechanizedworking face of Tashan Coal Mine[J]. Coal Science and Technology,2019,47(2):27−34.
    [31]
    何满潮,马新根,王 炯,等. 中厚煤层复合顶板切顶卸压自动成巷工作面矿压显现特征分析[J]. 岩石力学与工程学报,2018,37(11):2425−2434.

    HE Manchao,MA Xingen,WANG Jiong,et al. Feature analysis of working face strata pressure with roof cutting pressure releasing in medium-thick seam and compound roof condition[J]. Chinese Journal of Rock Mechanics and Engineering,2018,37(11):2425−2434.
    [32]
    王建文,王世彬,杨 军,等. 切顶卸压沿空留巷顶板破坏机理及控制技术[J]. 煤炭科学技术,2017,45(8):80−84.

    WANG Jianwen,WANG Shibin,YANG Jun, et al. Roof failuremechanism of gob-side entry retaining by roof cutting andpressure releasing and its control technology[J]. Coal Science andTechnology,2017,45(8):80−84.
    [33]
    BIAN WH,YANG J,HE MC, et al. Research and application of mechanical models for the whole process of 110 mining method roof structural movemen[J]. Journal of Central South University,2022,29(9):3106−3124. doi: 10.1007/s11771-022-5148-9
    [34]
    何满潮,高玉兵,杨 军,等. 厚煤层快速回采切顶卸压无煤柱自成巷工程试验[J]. 岩土力学,2018,39(1):254−264.

    HE Manchao,GAO Yubing,YANG Jun, et al. The quick recovery of the thick coal seam with the cutting and unloading of the coal pillar self entry engineering test[J]. Rock and Soil Mechanics,2018,39(1):254−264.
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