煤田地质与勘探Issue(3)：8-11,16,5.DOI:10.3969/j.issn.1001-1986.2014.03.002
沁水盆地柿庄北深部煤层煤体结构发育特征
The development charactecistics of deep coal structure in northern Shizhuang area
摘要
Abstract
Loose coal structure can easily make the wall of the borehole collapsed, having great impact on the ex-ploitation of coalbed methane. So analysis of coal structure is very important. Aiming at the deep coal seam in Shizhuang, according to artificial gamma, acoustic time difference, natural gamma, caliper, the breakage of roof and floor, we classified the structure of seams No.3 and No.15 in northern Shizhuang area. The average thickness of powdered coal of seam No.3 is 1 m, accounting for 17.85%of the total thickness of the seam. And it develops in the top or the bottom of the seam. Compared with seam No.3, seam No.15 has more powdered coal, accounting for 20.81% of the total thickness of the seam, and powdered coal develops often in the top or the bottom of the seam and near dirt band. The powdered coal is mainly affected by fold. The powdered coal thickness decreases and then increases with the depth. And the knee point is 1 200~1 300 m. Consequently, the coal structure of Shizhuang is very complex. We must pay attention to it during the exploitation.关键词
煤体结构/粉煤/人工伽马/声波时差Key words
coal structure/powdered coal/artificial gamma/acoustic time difference分类
天文与地球科学引用本文复制引用
陆小霞,黄文辉,王佳旗,唐修义,曾庆华,张守仁,吴见,陈燕萍..沁水盆地柿庄北深部煤层煤体结构发育特征[J].煤田地质与勘探,2014,(3):8-11,16,5.基金项目
国家科技重大专项课题(2011ZX05042-001) （2011ZX05042-001）
