大佛寺矿沉陷区变形预计及危险性分区

发布时间：2018-03-28 05:22

本文选题：开采沉陷　切入点：影响因子　出处：《金属矿山》2017年01期

【摘要】：以大佛寺煤矿30201工作面为例,首先分析了矿区地形地貌、工程地质条件及开采情况,结合矿区实际调查结果总结出地层岩性、地形坡度、断层构造、降雨作用、人类工程活动等5类矿山开采沉陷影响因子,并对各因子的影响能力进行了定量化分级;然后利用逻辑回归分析软件SPSS对矿区样本数据进行反演,构建了矿山开采沉陷危险性系数计算模型;最后结合Arc GIS软件构建了物元模型,对矿区沉陷区变形进行了预计,在此基础上以5个开采沉陷影响因子为变量,以10 m×10 m正方形网格为最小评价单元,分别得出各影响因子危险性分布情况作为基础图件,结合概率分析法计算出各模型的关联度与重要性程度,将矿区开采沉陷危险区划分为高危区、中危区、低危区和极低区4类。研究表明:大佛寺煤矿30201工作面地表沉陷范围由北部向东南部倾斜,沉陷预计值为300~650 mm,预计误差为1.7%~7.8%,表明该矿区开采沉陷预计及危险性分区结果基本符合矿区地表沉陷变形规律,对于该矿区安全开采及沉陷区治理有一定的参考价值。
[Abstract]:Taking No. 30201 face of Dafosi Coal Mine as an example, the topographic landform, engineering geological conditions and mining conditions of the mining area are analyzed, and the stratigraphic lithology, topographic slope, fault structure and rainfall action are summarized in combination with the actual investigation results of the mining area. The influence factors of mining subsidence of five kinds of mines, such as human engineering activities, are quantitatively classified, and the influence ability of each factor is classified quantitatively, and then the sample data of mining area are retrieved by using the software of logical regression analysis (SPSS). The calculation model of mining subsidence risk coefficient is constructed, and the matter-element model is constructed with Arc GIS software, and the deformation of mining subsidence area is predicted. On this basis, five factors affecting mining subsidence are taken as variables. Taking the 10 m 脳 10 m square grid as the minimum evaluation unit, the risk distribution of each influence factor is obtained as the basic map, and the correlation degree and the importance degree of each model are calculated by combining the probability analysis method. The dangerous areas of mining subsidence in mining area are divided into four types: high risk area, middle risk area, low risk area and very low area. The study shows that the subsidence range of No. 30201 face in Dafosi Coal Mine is inclined from the north to the southeast. The predicted value of subsidence is 300 ~ 650mm and the prediction error is 1.77.8mm, which indicates that the prediction of mining subsidence and the dangerous zoning result basically accord with the law of subsidence deformation of the mining area, and have certain reference value for the safe mining and the treatment of subsidence area in the mining area.
【作者单位】：辽宁地质工程职业学院测绘工程系;
【分类号】：TD327

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