河南金龙井田控煤构造分析

Analysis of Coal Controlling Structures in Jinlong Minefield, Henan

金龙井田位于荥巩煤田西部,属华北聚煤盆地南缘的嵩箕构造区,构造演化阶段清晰,形式多样。区内总体构造形态为单斜构造,地层走向NWW—近EW、倾向NNW—近N、浅部地层倾角因受滑动构造(HF1)的影响,变化较大7°～25°;深部(滑动构造以下)倾角平缓4°～12°。控煤构造主要由印支期东西向断裂(F9、F15)、燕山期北东向裂陷断裂(F3)、逆掩断裂组及喜山期地层重力滑动构造等多期变形叠加而成。综合评价区内构造复杂程度属中等构造。

The Jinlong minefield is situated in western part of the Xinggong coalfield in Songji tectonic province, south margin of the North China coal accumulating basin, its tectonic evolution is clearly staged and with diversified forms. Overall structural form in the area is a monocline, strata strike NWW-near EW, dip NNW-near N, shallow part strata dip angles have larger changes from 7°-25° because of impact from gliding structure HF1; deep part （under the gliding structure） gentle 4°-12°. Coal controlling structures were results of muhistage deforming and stacking included Indo-Chinese epoch EW faults （F9, F15）, Yanshanian epoch NE chasmic fault （F3）, thrust set and Himalayan epoch strata gravitation gliding tectonics. The structural complexity of the area belongs to medium grade on the basis of comprehensive assessment.