摘要
陕北煤炭大规模开采形成大量地表裂缝,直接对生态环境影响显著。以陕北典型地貌条件为研究背景,在选定典型工作面的基础上,开展不同采煤地表裂缝的野外地质调查、统计分析研究,对比不同地貌条件下采煤地表裂缝发育特征。研究结果表明,黄土沟壑区与风沙滩地区采煤地裂缝类型一致,均包括边界裂缝和平行裂缝。其中,平行裂缝风沙滩区有明显的充填弥合现象,黄土沟壑区弥合现象不显著。此外,黄土沟壑区平行裂缝展布不均匀,受黄土沟壑地貌影响显著。黄土沟壑区平均裂隙宽度为0.21m,而风沙滩区更小,平均裂隙宽度为0.10m。研究成果能够为陕北不同地貌条件采煤塌陷区治理提供关键参数。
Large scale coal mining in northern Shaanxi has formed a large number of surface cracks,which directly affects the ecological environment.Based on the typical geomorphic conditions in northern Shaanxi,the field geological survey and statistical analysis of different mining ground fractures are carried out on the basis of selecting typical working faces,and the development characteristics of surface fractures in different geomorphic conditions are compared.The results show that the types of ground fissures in loess gully area are consistent with those of sand wind beach area,including boundary fractures and parallel fractures.Among them,the phenomenon of filling and closing is obvious in the sand wind beach area with parallel cracks,and the phenomenon of loess gully area is not obvious.In addition,the parallel cracks in loess gully area are distributed unevenly,and are affected by the loess gully landform.The average width of the fissures in loess gully area is 0.21 m,while that of sand wind beach area is smaller,and the average width of the fractures is 0.10 m.The research results provide key parameters for the treatment of coal mining collapse area under different geomorphic conditions in northern Shaanxi.
作者
张艳
胡圣桃
龙建霖
吴彩艳
ZHANG Yan;HU Shengtao;LONG Jianlin;WU Caiyan(Shaanxi 194 Coalfield Geology Co.,Ltd.,Tongchuan 727000,China;Shaanxi 185 Coalfield Geology Co.fUd.9 Yulin 719000,China)
出处
《陕西煤炭》
2022年第6期121-124,共4页
Shaanxi Coal
关键词
陕北采煤区
地表裂缝
黄土梁峁
风沙滩地
northern Shaanxi coal mining area
ground surface fissures
loess gully
sand wind beach
