基于功效系数法的地表变形破坏预警研究  

Study on early warning of surface deformation and failure based on efficacy coefficient method

作　　者：胡倡瑞 王平[1] 郑先伟 胡彦 张威威 程爱平[1] HU Changrui;WANG Ping;ZHENG Xianwei;HU Yan;ZHANG Weiwei;CHENG Aiping(School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Wuhan Iron&Steel Group Chengchao Mining Co.,LTD.,Ezhou 436000,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]武汉钢铁集团程潮矿业有限公司,湖北鄂州436000

出　　处：《人民长江》2022年第6期146-152,共7页Yangtze River

基　　金：国家自然科学基金项目(51604195);湖北省自然科学基金项目(2018CFC818)。

摘　　要：近年来,程潮铁矿开采活动已造成大面积地表变形破坏,为保障矿区人员生命及财产安全,需对地表变形破坏及时进行预警。为此,选取原岩应力、有效矿体厚度、覆盖层特性、采场顶板稳固性、地下水软化性、主要影响范围角和区域断层不稳定性等7个影响因子作为评价指标,采用改进熵权法计算各评价指标权重系数,并结合功效系数法建立深部开采地表变形破坏预警分析模型。以程潮铁矿发生的4次典型地表变形破坏灾害为例,对预警模型进行验证,预警结果与实际情况相符。结果表明:基于功效系数法的地表变形破坏预警模型具有较高的可行性与科学性,可为矿区地表变形破坏预警工作提供一定的指导。In recent years, the mining activities of Chengchao Iron Mine have caused a large area of surface deformation and failure.In order to protect the property and life safety of the mining area, it is necessary to timely warn the surface deformation and failure.Firstly, seven influence factors, such as original rock stress, effective thickness of orebody, overlayer properties, stability of quarry headplate, ground water, main scope of impact angle and regional fault instability were selected as the evaluation indices, and the improved entropy weight method was used to calculate the weight coefficient of each evaluation index.Based on the principle of efficacy coefficient method, an early warning analysis model of deep mining surface deformation and failure was established.Taking four typical surface deformation damage disasters in Chengchao Iron Mines as an example, the early warning model was verified, and the early warning results were consistent with the actual situation, indicating that the early warning model based on efficacy coefficient method has high feasibility and science, and can provide some guidance for the early warning of surface deformation and failure in mining areas.

关 键 词：地表变形 改进熵权法 功效系数法 预警模型 程潮铁矿 

分 类 号：TU452[建筑科学—岩土工程]