The study describes the strata mechanics and convergence monitoring while depillaring in a single lift of thick coal seam by cable bolting method. Based on the rock mechanical investigation, the use of a 19-mm diameter rope as support was applied to hold the immediate roof over the coal seam. The field application was carried out in Bonbohal (R-VI) seam of the case study mine for the extraction of full thickness by a single lift considering geotechnical parameters. The rate of percentage of extraction was found at 68%, and simultaneously, no spontaneous heating was observed during the extraction of the pillars. Thus, this paper deals with the cable bolting method to extract thick coal seam by depillaring in a single-lift operation. Therefore, the result of the study of convergence behavior will help to design the depillaring panels. A support system and strict observation of the reading of strata monitoring instruments will help to take corrective measures in advance during extraction as well as provide insight for future extractions more safely and efficiently.

中文翻译：

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锚杆法在厚煤层脱柱中的地层稳定性调查和收敛监测（SSICM）

研究描述了在厚煤层单次提升中采用锚杆法进行地层力学和收敛监测。根据岩石力学调查，使用 19 毫米直径的绳索作为支撑，将直接顶板固定在煤层上。现场应用在案例研究矿的 Bonbohal (R-VI) 煤层中进行，以考虑岩土参数通过单次提升提取全厚度。发现提取率为 68%，同时，在提取柱子过程中没有观察到自发加热。因此，本文研究了在单次提升作业中通过脱柱提取厚煤层的锚索方法。因此，收敛行为的研究结果将有助于设计除柱板。