陕北矿区煤炭开采沉陷实测参数分析  

Analysis of measured mining subsidence parameters in Northern Shaanxi Mining Area

作　　者：申涛 朱占荣[3] SHEN Tao;ZHU Zhanrong(Shaanxi Institute of Geological Survey,Xi’an 710054,China;Xi’an University of Science and Technology,Xi’an 710065,China;No.185 Exploration Team,Shaanxi Bureau of Coal Geological Exploration,Yulin 719053,China)

机构地区：[1]陕西省地质调查院,陕西西安710054 [2]西安科技大学,陕西西安710065 [3]陕西省一八五煤田地质有限公司,陕西榆林719053

出　　处：《煤炭科学技术》2019年第12期207-213,共7页Coal Science and Technology

基　　金：陕西省公益性地质调查专项资助项目(130201)

摘　　要：为了深入研究陕北能源化工基地煤炭开采引起的地表变形及参数分布规律,并为环境修复提供理论及技术支持,采用地表移动实测研究法,在榆树湾煤矿建立矿区典型地表移动观测站,通过观测站设置与数据采集及分析,初步获得了厚风积沙黄土层、中等偏硬基岩条件下的地表移动规律,并结合该矿区多个工作面地表移动观测参数,通过综合分析,获得了概率积分法预计参数与本区域风积沙黄土层以及基岩层的相互关系。结果表明:下沉系数的范围为0.50~0.65,受风积沙黄土层厚度与基岩厚度的组合变化影响不大;主要影响角正切值与风积沙和黄土层厚度及基岩厚度比值成正比关系;拐点偏移距的范围为开采深度的0.07~0.40倍,与本区域岩层硬度为中硬偏硬的规律吻合。In order to further study thesurface deformation and the distribution of parameters caused by mining and to provide theoretical and technical support for environmental restoration in Northern Shaanxi mining area,this paper adopted the method of surface movement observation.By establishing typical surface movement observation stations in the coal mine of Yushuwan for data collection and analysis,the surface movement patterns in the thickaeolian sandloess layer and the medium hard bedrock layer were observed.With a comprehensive analysis,the relationship between the prediction parameters obtained by probability integral method and the aeolian sand loess layer as well as the bedrock layer was described.The results show that:the subsidence coefficient ranges from 0.50 to 0.65,and it is not affected significantly by the ratio of aeolian sand loess thickness and bedrock thickness;the coefficient mainly influences theangle tangent and is directly proportional to the ratio of aeolian sand loess thickness and bedrock thickness;the range of inflection point offset is 0.07~0.40,which is consistent with the bedrock hardness in this area.

关 键 词：开采沉陷 地表移动参数 陕北矿区 环境修复 

分 类 号：TD173[矿业工程—矿山地质测量]