دورية أكاديمية
Application of comprehensive exploration technology for water-hazard prevention in coal mine working face
| العنوان: | Application of comprehensive exploration technology for water-hazard prevention in coal mine working face |
|---|---|
| المؤلفون: | JI Qianhui, HAO Shijun, WANG Cheng, LIU Weiwei |
| المصدر: | Gong-kuang zidonghua, Vol 46, Iss 3, Pp 79-83 (2020) |
| بيانات النشر: | Editorial Department of Industry and Mine Automation, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Mining engineering. Metallurgy |
| مصطلحات موضوعية: | mine water-inrush, water-hazard prevention of coal mine, water-hazard detection of coal mine, comprehensive exploration, audio-frequency electric penetration, directional drilling, water-conductive collapse colum, Mining engineering. Metallurgy, TN1-997 |
| الوصف: | Most of existing comprehensive exploration technologies for water-hazard on coal mine working face adopt conventional rotary drilling method with lots of boreholes and heavy workload. In addition, blending deformation of drill pipes, geological condition variation in boreholes and alterations of drilling parameters during construction process would lead to borehole deflection, which may cause wrong decision about water-hazard exploration. For above problems, a comprehensive exploration technology based on directional drilling was proposed and applied to water-hazard detection on fully mechanized mining face of a coal mine. The application process is as follows: Firstly, mine audio-frequency electric penetration technology is used in the comprehensive exploration technology to detect anomalous area with low apparent resistivity on the working face, and then directional drilling technology is adopted to directly expose water-rich zone. It is determined that there is a water-conductive collapse column of Ordovician limestone karst in the anomalous area through observing water gushing in the boreholes and chemically examine quality of the water. Meanwhile, extension state and boundary of the water-conductive collapse column in the working face are delineated. Position of open-off cut is redesigned according to comprehensive exploration results, so as to effectively eliminate hidden water-inrush danger caused by exposing the water-conductive collapse column during mining process. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | Chinese |
| تدمد: | 1671-251X 1671-251x |
| Relation: | https://doaj.org/toc/1671-251X |
| DOI: | 10.13272/j.issn.1671-251x.2020020031 |
| URL الوصول: | https://doaj.org/article/4734dcaab4bd40ca8c528a61f36f8252 |
| رقم الأكسشن: | edsdoj.4734dcaab4bd40ca8c528a61f36f8252 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 1671251X 1671251x |
|---|---|
| DOI: | 10.13272/j.issn.1671-251x.2020020031 |