|
|
|
| Study on the influence of pressure relief of variable diameter borehole on advance abutment pressure of coal mine roadway |
| Feng Caizheng |
| Energy Bureau of Shuicheng District, Liupanshui City, Guizhou Province，Liupanshui 553000, China |
|
|
|
|
Abstract In order to explore the influence law of pressure relief of variable diameter borehole on advance abutment pressure, No.2303 Face of strong rock burst mine in Guotun Coal Mine was taken as the research object, FLAC3 D numerical simulation software was used to establish numerical model, and the influence of variable diameter position and deep hole diameter on advance abutment pressure by control variable method was studied. The simulation results showed that when the variable diameter point was 6 m away from the roadway side and the deep hole diameter was 240 mm, the distance between the peak abutment pressure position and the working face was the smallest, and the pressure relief effect was the best. The remaining 70 m range of 2303 track crossheading was selected for on-site monitoring. The pressure relief operation of variable diameter borehole was carried out in the solid coal side, and the stress monitor was installed. The results showed that the pressure relief of variable diameter borehole could significantly reduce the advance peak pressure and make the peak point move to the working face, which was consistent with the simulation results. This study provided a basis for optimizing borehole pressure relief parameters and ensuring the stability and safety of roadway.
|
|
|
|
|
|
| [ 1 ] 孙少龙，孙小杨，王 源. 深埋大采高综放采场超前支承压
力分布规律[ J ]. 中国煤炭，2015，41（ 8 ）：45 - 48，107.
[ 2 ] 潘一山，高学鹏，王 伟，等. 冲击地压矿井综采工作面两巷超前支护液压支架研究[ J ]. 煤炭科学技术，2021，49（ 6 ）：1 - 12.
[ 3 ] 杨亚威，翟英达. 超前支承压力区煤巷支护关键技术研究[ J ]. 矿业安全与环保，2020，47（ 6 ）：13 - 18.
[ 4 ] 孙利辉，范 宇，张海洋，等. 深井高应力超前工作面爆破切顶卸压护巷加固技术研究[ J ]. 煤炭技术，2024，43（ 8 ）：1 - 6.
[ 5 ] 杜学领. 防治冲击地压的钻孔卸压技术研究进展与展望[ J ]. 煤矿安全，2024，55（ 11 ）：28 - 40.
[ 6 ] 陈 淼，肖 灿，王肖珊，等. 动载作用下含孔锚固体力学特性及破坏机制研究[ J ]. 岩石力学与工程学报，2025，44（ 2 ）：342 - 358.
[ 7 ] 张永将，季 飞，赵同彬，等. 临空巷道坚硬顶板水力割缝 - 压裂联合控顶卸压技术[ J ]. 煤炭学报，2024，49（ 12 ）：4 739 - 4 751.
[ 8 ] 赵善坤，王炳钦，苏振国，等. 坚硬厚顶板岩层定向长钻孔水力压裂防冲技术及应用[ J ]. 煤矿安全，2024，55（ 12 ）：10 - 21.
[ 9 ] Chen Miao, Zhang Yuliang, Zang Cuanwei et al. Experimental In-
vestigation on Pressure Relief Mechanism of Specimens with Prefabricated Reaming Boreholes[ J ]. Rock Mechanics and Rock Engineering, 2023, 56, 2 949 - 2 966.
[ 10 ] 潘俊锋，马宏源，贺海鸿，等. 煤层防冲卸压钻孔动载响应规律及其极限性[ J ]. 煤炭科学技术，2024，52（ 9 ）：137 - 149.
[ 11 ] 张兴润，潘博杰，张永斌，等. 复合动力灾害钻孔卸压和高效抽采一体化防治技术[J/OL]. 煤炭科学技术，1 - 10[2025 - 02 - 22].
[ 12 ] 翟新献，任柱安，方建厂，等. 特厚煤层掘进巷道两帮卸压钻孔合理参数数值模拟研究[ J ]. 河南理工大学学报（ 自然科学版 ），2024，43（ 3 ）：1 - 10.
[ 13 ] Miao Chen, Zhang Yuliang, Zhang Guangchao et al. Discrete ele-
ment study on mechanical response and pressure relief effect of rock containing variable hole[ J ]. Theoretical and Applied Fracture Mechanics, 2023, 127, 103 976.
[ 14 ] 马斌文， 邓志刚， 赵善坤， 等. 钻孔卸压防治冲击地压机理及影响因素分析[ J ]. 煤炭科学技术， 2020， 48（ 5 ）： 35 - 40.
[ 15 ] 丁 可. 分段扩孔技术防冲卸压机理及其工程应用研究[ D ]. 青岛：山东科技大学，2019. |
|
|
|
