|
|
|
| Research and application of grouting reinforcement technology for high stress mining roadway with soft roof and floor |
| Sun Jiahui |
| Zhangcun Mine, Jizhong Energy Resources Group Co. Ltd., Xingtai 054108, China ) |
|
|
|
|
Abstract Surrounding rock control in roadways with weak roof and floor has long been regarded as a difficult issue in support design for coal mine mining roadways. The haulage roadway of the No.2618 Face in the No.2 coal seam of Zhangcun Mine was taken as the engineering background and research on grouting reinforcement technology was carried out with. Field investigation was conducted, which showed that roadway deformation was characterized by long duration, large deformation magnitude, and rib heave as the dominant form. The FLAC3D numerical simulation software was adopted to analyze the deformation mechanism, and it was found that poor self-stability capacity of the surrounding rock was regarded as the main cause of severe deformation. On this basis, grouting reinforcement technology was proposed. Prestressed grouting composite materials were added into ordinary cement slurry, by which the initial setting strength was improved and the shrinkage rate of the consolidated body was reduced. Combined with enhanced measures such as bolts and cables, roadway deformation of mudstone roofs and floors was effectively controlled. References could be provided for surrounding rock control under similar geological conditions.
|
|
|
|
|
|
| 1 ] 安俊孝,程利兴,胡 伟,等.高应力软岩巷道全断面锚注支护研究及应用[ J ]. 煤炭工程,2025, 57( 7 ):53 - 59.
[ 2 ] 康红普,伊 康. 深部软岩巷道围岩扩容与流变特性模拟研究及应用[ J ]. 煤炭学报,2023,48( 1 ):15 - 33.
[ 3 ] 李 勇. 高应力软岩巷道差异化协同支护技术研究[ J ]. 煤炭与化工,2024,47( 7 ):18 - 22.
[ 4 ] 李良山,钱德雨,黄 森,等. 里必煤矿高应力软岩巷道采动应力演化规律与围岩控制技术[ J ]. 煤矿安全,2024,55( 12 ):171 - 179.
[ 5 ] 徐佑林,吴少康,周 波,等. 强动压破碎软岩巷道再造多重承载结构全空间协同支护技术研究[ J ]. 岩石力学与工程学报,2025, 44 ( 7 ):1 720 - 1 735.
[ 6 ] 石 磊,王 鹏,姜丙孝,等. 深部复杂破碎软岩巷道围岩变形控制技术研究[ J ]. 中国矿业,2025,34( 6 ):215 - 223.
[ 7 ] 周 游,张振英,曹林超,等. 断层构造区软岩巷道变形破坏特征及主被动支护技术研究[ J ]. 能源技术与管理,2024, 49( 5 ):1 - 5.
[ 8 ] 李向福,曹 臣,廉 万,等. 软岩巷道破坏机理与支护技术研究[ J ]. 中国矿山工程,2024,53( 3 ):44 - 48.
[ 9 ] 刘光饶,张 勇,左海峰,等. 新上海一号煤矿软岩回采巷道预裂卸压技术研究[ J ]. 煤炭技术,2024,43( 4 ):18 - 22.
[ 10 ] 姜良金,何清波,卢佳欣,等. 倾斜厚煤层沿空巷道变形破坏特征及支护控制技术研究[ J ]. 中国煤炭, 2023, 49( 3 ):48 - 54.
[ 11 ] 董明丽,李佳瑶. 混合支护方式下支架与围岩破坏特征数值模拟研究[ J ].煤炭与化工,2025,48( 9 ):7 - 10,15,19.
[ 12 ] 孟庆彬,张 烜,葛政宇,等. 深部巷道锚注支护结构时效特性理论分析[ J ]. 岩石力学与工程学报,2025,44( 6 ):1 420 - 1 437.
[ 13 ] 苏海健, 张路晴, 吴 辰, 等. 注浆加固孔洞砂岩断裂特性与变形演化规律研究[ J ]. 采矿与岩层控制工程学报,2025,7( 3 ): 119 - 131.
[ 14 ] 孙 越,邱新财,张金磊,等. 破裂煤岩体注浆加固试验方法及重塑机理研究[ J ]. 工矿自动化,2025,51( 6 ):150 - 156. |
|
|
|