涟邵煤田晏家铺向斜滑脱构造特征

晏家铺向斜石炭纪地层内,滑脱构造比较发育,既有挤压推覆构造集云断层和金盘仑断层,又有重力滑覆构造大成坪断层与飞来峰群,并具有多期多层次特点。勘探结果表明,这些推覆构造常造成煤层重复,扩大了煤炭资源量。向斜内测水煤系中,常见层间滑动断层,尤以主采煤层顶板附近的顶板断层最发育。它有时对煤层及顶、底板破坏较大,是井田勘探与开采的主要研究对象之一。

CHARACTERISTICS OF THE DECOLLEMENT STRUCTURE IN ANJIAPU SYNCLINE OF LIANSHAO COAL FIELD

Decollement structures are relatively well-developed in the Carboniferous strata of Anjiapu syncline, including both compressive nappe structure such as Jiyun fault and Jinpanlun fault and gravetational detachment structure such as Dachengping fault and klippes, characteristic of multiple phases and multiple levels. Exploration result indicate that these decollement structures often cause overlapping of coal beds, on which can be based to expand the coal resources Interlayer slide fractures are often found in Ceshui coal measure inside the syncline, which developed commonly especially in the hanging floor faults near the hanging floor of the main coal bed, which sometimes destroy the coal bed and its top and bottom seriously. It is one of the main research object in the exploration and exploitation of coalfields.