Qinglongsi Coal Mine Branch of Guoneng Yulin Energy Co. , Ltd.
CCTEG Coal Mining Research Institute

为探索青龙寺煤矿地质采矿条件下的垮落带和导水裂缝带发育高度,采用现场地面钻探、钻孔漏失量观测法、彩色钻孔电视成像技术、经验公式、类比分析综合研究方法,对5-20101与5-20105工作面覆岩垮落带、导水裂缝带高度进行实测及特殊性分析。结果表明:青龙寺煤矿地质采矿条件下垮落带最大高度为9.7~17.0m,垮采比为4.1~7.4;导水裂缝带发育最大高度为41.47~46.87m,裂采比为17.4~20.4;工作面推进速度可影响上覆岩层的回转角度及稳定结构的形成,高强度快速推进综采工作面地质采矿条件下的“两带”发育高度具有垮落带、导水裂缝带发育高度大的特点。

In order to explore the development height of caving zone and water conduction fault zone under geological and mining conditions in Qinglongsi Coal Mine, comprehensive research methods of ground drilling, borehole loss observation method, color drilling TV imaging technology, empirical formula and analogy analysis are adopted. Height of overlying rock caving zone and water conduction fault zone in 5 - 20101 and 5 - 20105 working faces of the mine was measured and its particularity was analyzed. Results show that the maximum height of caving zone in Qinglongsi Coal mine is 9. 7~17. 0 m, and the caving ratio is 4. 1~7. 4. The maximum height of the water-carrying fracture zone is 41. 47 ~ 46. 87 m, and the fracture production ratio is 17. 4~20. 4. The advancing speed of the working face can affect the turning angle of the overlying strata and the formation of stable structure. The development height of caving zone and water conduction fault zone under the geological and mining conditions of the high - strength rapid advancing fully mechanized mining face is characterized by the large development height of the caving zone and the water conducting fracture zone.

国家自然科学基金面上项目(52174079)

刘国臻, 尹家宽, 高 超. 青龙寺煤矿高强度综采覆岩破坏特征实测研究 [J]. 煤炭工程, 2023, 55(11):102-107.