采动影响巷道锚杆轴力无损检测分析
Nondestructive Detection Analysis of Anchor Bolt Axial Load in Mining-disturbed Roadways
-
摘要: 采用锚杆动力无损检测技术，对丁集煤矿1321（3）工作面切眼外近100 m采动影响巷道锚杆实时轴力状态进行了密集观测。监测结果表明，在距采煤工作面0～20 m范围内，受采动影响严重，锚杆轴力变化较大。在距工作面0～10 m范围内，锚杆轴力降低；在距工作面10～20 m范围内，为超前支承压力区；在15 m处，形成超前支承压力峰值；在20 m开外距离，锚杆轴力受采动影响较小，锚杆轴力变化不大。通过锚杆轴力异常变化（急剧增大或降低）检测容易发现巷道异常断面或隐伏断层区域。Abstract: Real-time axial load of anchor bolts in mining-disturbed roadways for about 100 m zone just from the cutting holes outside 1321(3) working face in Dingji Coal Mine were intensively monitored by nondestructive testing. The monitoring results show that the axial load of bolts in the zone of 0 m to 20 m from the working face is varied violently by the heavy mining disturbance. The axial load of anchor bolt located in the zone of 0 m to 10 m is decreased. The lead abutment pressure zone is located in about 10 m to 20 m and its peak value occurs at nearly 15 m from the working face. The axial load of bolts in the zone above 20 m away from the working face is not varied violently by a little mining disturbance. The abnormal section of roadways or hidden fault zone was easily found by the intensive monitoring of axial load for anchor bolts.
-
-
[1] XIE G X, Liu Q M, ZhaW H, et al. Patterns governing distribution of surrounding-rock stress and strata behaviors of fully-mechanized caving faces[J]. Journal of Coal science& Engineering, 2004,10(1):5-8. [2] 谢广祥,曹伍富,华心祝,等.综放沿空掘巷矿压显现规律及支护参数优化[J].煤炭科学技术,2002,30(12):10-13. [3] 刘长友,曹胜根,钱鸣高,等.综放末采期间的矿压特征[J].煤炭科学技术,1998,26(5):45-48. [4] 王家臣,吴健,李报.特厚软煤层综放开采矿压观测与分析[J].煤炭科学技术,1997,25(9):2-5. [5] 袁和生.煤矿巷道锚杆支护技术[M].北京:煤炭工业出版社,1997. [6] 谢广祥,杨科,常聚才.综放回采巷道围岩力学特征实测研究[J].中国矿业大学学报,2006,35(1):94-98. [7] Zhang K, Zhang G, Hou R, et al.Stress Evolution in Roadway Rock Bolts During Mining in a Fully Mechanized Longwall Face, and an Evaluation of Rock Bolt Support Design[J]. Rock Mechanics and Rock Engineering, 2015,48(1):333-344. [8] 张凯,吴宇,周跃进,等.煤矿非全长黏结锚杆无损检测技术开发与应用[M].徐州:中国矿业大学出版社，2013. -
期刊类型引用(11)
1. 安南，陈俊智，任春芳，杨立新，魏行，陈祯. 铁矿软岩巷道失稳机理与支护技术优化. 矿冶. 2025(01): 34-42+51 . 
百度学术
2. 周长伟，张松涛. 深部软岩底抽巷支护结构及数值模拟研究. 低温建筑技术. 2024(06): 48-51+56 . 百度学术
3. 薛志胜，韩国新，张扬，张安福，高祥祥，董一辉. 风氧化区巷道围岩失稳特征分析与注浆加固技术. 采矿技术. 2024(06): 248-256 . 百度学术
4. 柳长荣. 软岩巷道支护方案实施及变形监测. 机械管理开发. 2023(07): 301-302 . 百度学术
5. 赵斌，王朋卫. 巷道易风化围岩薄层快速喷涂封闭技术研究. 煤炭工程. 2021(02): 60-64 . 百度学术
6. 赵斌，王朋卫. 底抽巷防风化新型喷涂材料研究及应用. 煤矿安全. 2021(03): 55-60 . 本站查看
7. 张继龙. 深井高应力破碎软岩巷道过断层支护技术研究. 能源与环保. 2021(04): 249-254 . 百度学术
8. 谢鹏飞，鄢德恒. 掘进工作面过风氧化带顶板支护技术研究. 煤矿现代化. 2021(06): 85-89 . 百度学术
9. 王炎. 煤矿巷道锚杆支护材料合理化研究分析. 山西冶金. 2020(03): 54-56 . 百度学术
10. 许得河. 软岩大变形巷道围岩稳定性技术研究. 采矿技术. 2020(05): 54-56 . 百度学术
11. 郝鹏程. 21117辅运顺槽围岩控制技术研究. 内蒙古煤炭经济. 2020(08): 152 . 百度学术
其他类型引用(2)
计量
- 文章访问数: 216
- HTML全文浏览量: 0
- PDF下载量: 0
- 被引次数: 13
下载:
