矿井瞬变电磁法参数优化试验及超前探测应用
Parameters optimization test of mine transient electromagnetic method and application of advanced detection
-
摘要: 为了精准超前探测采空区及积水区，确保煤矿的安全掘进，通过对已知积水采空区进行矿井瞬变电磁法探测对比试验，分析不同参数对积水采空区电场响应特征的影响，优化了一套适合积水采空区探测的发射频率、叠加次数以及采集密度等采集参数，并将该优化参数应用到井下超前探测实践中，成功发现前方采空区及积水区。
结果表明：矿井瞬变电磁法采用6.25 Hz的发射频率、32次叠加以及中密度采集方式，对采空区及积水区超前探测较好；将该采集优化参数应用到晋城矿区井下超前探测，以王台铺矿超前探测应用为例，发现掘进工作面前方存在明显的1处高阻异常体和2处低阻异常体，且分界面明显，其与查明的小煤窑巷道分布区基本重合，后经过打钻验证，正前方50 m之外的高阻异常区见空，通过钻孔透视发现，为小煤窑采空区且无积水，后退30 m，向右侧帮1处低阻异常区打钻，打到深度35 m遇空出水，水量较大，为采空区积水，取得较好探测效果；根据在鄂尔多斯地方煤矿、临汾地方煤矿、晋煤集团、朔州地方煤矿等井下探测总结的经验，一般视电阻率位于30 Ω·m以下推断为含水异常，30 Ω·m以上推断为不含水正常岩层，更高则推断为高阻异常。Abstract: In order to accurately detect the gob and the water-bearing area in advance, and ensure the safe excavation of the coal mine, the mine transient electromagnetic method was used to detect and compare the test in the known water-bearing gob, and the electric field response characteristics of different parameters to the mined-out gob were analyzed. A set of data acquisition parameters suitable for the detection of the water level, the number of superpositions and the acquisition density were optimized and the optimized parameters were applied to the practice of underground advance detection, the front gob and water-bearing gob area were successfully discovered. The results showed that the mine transient electromagnetic method used the emission frequency of 6.25 Hz, 32 superposition and medium density acquisition methods, and it was better to detect the gob and the water-bearing area; The acquisition optimization parameters were applied to the underground exploration in Jincheng Mining Area. Taking the advanced detection application of Wangtaipu mine as an example, it was seen that there was an obvious high-resistance anomaly and two low-resistance anomalies in front of the face, and the interface was obvious, which was basically the same as the identified distribution area of small coal mine roadway. After drilling and verification, the high-resistance anomaly area 50 m ahead of the front was empty, and it was found through the borehole fluoroscopy that it was a small coal mine gob and there was no water. When retreating 30 m backward, a low-resistance anomaly area was drilled to the right side, hitting a depth of 35 m with effluent, large amount of water, and the water was collected in the gob, which has a good detection effect. According to the exploration and summary experience of local coal mine in Ordos, Linfen local coal mine, Jinmei Group, Shuozhou local coal mine and other underground mines, the apparent resistivity value was generally below 30 Ω·m, which was inferred to be water-containing anomaly, and 30 Ω·m or more was inferred to be a normal rock formation without water, and higher than that would be inferred to be a high-resistance anomaly. -
-
期刊类型引用(13)
1. 李垂宇，侯俊领，黄童李，黄甫豪，王振亚. 预应力锚杆在拉拔试验过程中的力学分析. 低温建筑技术. 2025(01): 72-74 . 
百度学术
2. 刘泉声，刘滨，唐彬，康永水，卢海峰，朱元广，黄兴，潘玉丛，邓鹏海，孙磊，唐永志，卢兴利，张程远，余宏淦，李培涛，雷一鸣，贾浩男. 煤矿深部巷道碎胀大变形灾害控制及大变形灾变环境下TBM快速成巷技术. 煤炭学报. 2025(01): 224-244 . 百度学术
3. 赵能，唐彬，张大欢，胡阳，王逸洋，谢凯. 基于黏聚力模型的螺纹钢锚杆拉拔数值模拟. 煤矿安全. 2024(02): 141-146 . 百度学术
4. 赵能，陶文斌，沈仁为，胡阳，李宏亮，唐彬. 锚杆拉拔数值模拟试验研究. 福建建材. 2024(01): 10-13 . 百度学术
5. 杨林，朱训国，夏洪春，杨帅. 拉压复合型锚杆锚固机理的数值及模型试验应用研究. 西安理工大学学报. 2024(01): 132-142 . 百度学术
6. 段勇信，袁玉福，景小键. 松散软弱围岩巷道锚杆支护失效机理及协同支护研究. 内蒙古煤炭经济. 2024(05): 67-69 . 百度学术
7. 袁维，王立言，裴子豪，孙瑞峰，王伟. 分级侧向膨胀型锚杆结构力学性能及锚固机理. 地下空间与工程学报. 2024(03): 868-876 . 百度学术
8. 杜佳敏，何川，汪波，徐国文，陈旭，徐昆杰. 隧道斜向超前系统锚杆支护效果及承载规律. 隧道建设(中英文). 2024(08): 1617-1631 . 百度学术
9. 郝英豪，韩昌良，刘计寒，杨厚强，白刚，宋凯，杨浩兴，魏民. 强采动巷道破碎顶板全长锚固案例分析. 煤炭技术. 2024(11): 6-11 . 百度学术
10. 杜志刚，陶亚文，高富强，杜艳强. 玄武岩纤维筋的力学特性与破坏模式试验研究. 矿产勘查. 2023(02): 304-309 . 百度学术
11. 王想君，李英明，赵光明，孟祥瑞，王艺，程详. 全长锚固锚杆支护软岩巷道围岩承载结构力学响应解析. 煤炭科学技术. 2023(10): 24-34 . 本站查看
12. 石垚. 预应力锚杆支护应力场叠加效应试验研究. 能源与环保. 2023(11): 51-60 . 百度学术
13. ZHU Zheng-de，SHU Xiao-yun，LI Zhe，TIAN Hong-ming，TIAN Yun. Stress analysis of full-length grouted bolt under shear deformation of anchor interface. Journal of Mountain Science. 2022(11): 3286-3301 . 必应学术
其他类型引用(14)
下载:
图(8)
计量
- 文章访问数: 301
- HTML全文浏览量: 1
- PDF下载量: 242
- 被引次数: 27
