基于切线角理论的露天煤矿滑坡预警阈值计算  

Calculation of landslide early warning threshold in surface coal mine based on tangent Angle theory

作　　者：赵立春 徐长友 刘永杰 徐勇超 韦宗根 祁利民 ZHAO Lichun;XU Changyou;LIU Yongjie;XU Yongchao;WEI Zonggen;QI Limin(Zhaluteqi Zhahanaoer Coal Industry Company,Zhaluteqi 029100,China;Inner Mongolia Energy Coal Industry Company,Houlingol 029200,China;CCTEG Shenyang Research Institute,Fushun 113122,China;Houlingol Energy Bureau,Houlingol 029200,China)

机构地区：[1]扎鲁特旗扎哈淖尔煤业公司,内蒙古扎鲁特旗029100 [2]内蒙古能源有限公司,内蒙古霍林郭勒029200 [3]中煤科工集团沈阳研究院,辽宁抚顺113122 [4]霍林郭勒市能源局,内蒙古霍林郭勒029200

出　　处：《矿业安全与环保》2022年第6期34-38,共5页Mining Safety & Environmental Protection

摘　　要：露天煤矿软岩边坡变形复杂,滑坡危险性大。为了充分挖掘露天煤矿软岩边坡监测数据变化规律,实现软岩边坡滑坡的准确预测预报,以霍林河煤田二号露天采区为工程实例,基于蠕变曲线切线角理论计算,创新提出了不同类型土—岩复杂软岩边坡雷达预警阈值级别划分标准。研究结果表明:采场中上部土类边坡及排土场边坡预警阈值变形速度v≥15.0 mm/h,切线角α≥75°达到临滑阶段;采场下部硬岩类边坡预警阈值速度v≥8.0 mm/h,切线角α≥85°达到临滑阶段。该预警阈值的成功应用对保障矿山安全生产、提高经济效益具有重要意义。The soft-rock slope of the surface coal mine has complex deformation and great landslide risk.In order to fully excavate the change law of the monitoring data of the soft-rock slope of the surface coal mine and realize the accurate prediction of the landslide of the soft-rock slope,the No.2 surface mining area of the Huolinhe Coalfield was taken as the engineering example,based on the theoretical calculation of tangent Angle of creep curve,the classification standard of radar warning threshold levels for different types of soil-rock complex soft-rock slope were innovatively proposed.The results show that the deformation speed of the early warning threshold of the middle-upper part of the stope soil slope and the dump slope is v≥15.0 mm/h,and the tangent Angleα≥75°reaches the imminent slip stage,the early warning threshold velocity v≥8.0 mm/h for hard rock slopes in the lower stopes,and the tangent Angleα≥85°reaches the imminent slip stage.The successful application of the warning threshold is of great significance to ensure the safety of mine production and improve economic benefits.

关 键 词：露天煤矿 土—岩复杂边坡 预警阈值 切线角理论 滑坡机理 预警预报技术 

分 类 号：TD824.7[矿业工程—煤矿开采]