摘要
本文选取有代表性的测线进行了物探解译,根据解译结果结合钻探手段,对物探异常区进行了验证,综合圈定了采空区的范围。其中小窑采空区包括8个区域,总面积为143599m2;国矿采空区包括2个区域,总面积为131279m2。在圈定的采空区范围基础上,以采空区终采时间为主要因素,结合地表移动变形特征、顶板岩性及松散层厚度等因素进行了采空区稳定性的定性分析,以采空区冒落裂隙带及采空区移动变形量计算进行了采空区稳定性的定量分析,分析结果为国矿一槽煤采深5.3~60m采空区及巷道、小窑开采区及巷道为不稳定区域,对工程建设影响大,危险性大。国矿一槽煤采深60~170m采空区及其巷道为基本稳定区域,对工程建设影响中等,危险性中等。
In this paper,representative geophysical lines are selected for geophysical interpretation.According to the interpretation results and drilling methods,the geophysical anomaly area has been verified,and the goaf within the working area has been delineated comprehensively.The goaf includes eight small kilns with a total area of 143599 m2,and two national mines with a total area of 1317179 m2.On the basis of the delineated goaf scope,taking the final mining time of goaf as the main factor,the qualitative analysis of goaf stability is carried out in combination with the characteristics of surface movement and deformation,roof lithology and thickness of loose layer,and the quantitative division of goaf stability is made by calculating the caving fracture zone and the movement and deformation of goaf.The analysis results show that the goaf and roadway with a mining depth of 5.3-60m,the small kiln mining area and the roadway are in unstable areas,which have great influence on the engineering construction and great danger.The goaf and its roadway with a mining depth of 60-170m in No.1 trough of Guoguo Coal Mine are in basically stable areas,which have medium impact on engineering construction and medium risk.
作者
李晓玮
LI Xiaowei(Beijing Institute of Geology,Beijing 100120)
出处
《城市地质》
2019年第4期61-71,共11页
Urban Geology
关键词
采空棚户区
物探
钻探
稳定性评价
开采区
小煤窑
Mined-out shanty area
Geophysical prospecting
Drilling
Stability evaluation
Mining area
Small coal kiln
