益新煤矿石头河子组沉积环境及其聚煤特征

Sedimentary environment and coal accumulation characteristics of Shitouhezi Formation in Yi Xin coal mine

为了揭示鹤岗煤田益新煤矿侏罗系石头河子组煤层的聚煤规律,针对该煤层层数多、对比困难等实际问题,采用沉积地层学、煤田地质学的理论和方法,结合益新煤矿的勘探资料、矿井生产中揭露的地质资料,分析了侏罗系石头河子组煤系地层岩石学特征、沉积环境及聚煤规律。结果表明:石头河子组大岭含煤段与上部含煤段构造活动强烈、频繁,成煤条件较差,而中部含煤段湖泊边缘地带、滨湖三角洲易于形成厚煤层。大部分煤层形成于滨湖三角洲的顶积层,特厚煤层的形成与大面积沼泽化的三角洲平原有关。

In order to reveal the law of coal accumulation in the Jurassic coal seam of the new coal mine of Hegang coal field, the coal seam in the coal mine of the new coal mine is much more difficult. Using the theory and method of sedimentary stratigraphy, coal geology, according to the disclosed Yixin coal mine exploration data, mine production of geological data, analyzes the Jurassic Shitouhezi Formation coal measures strata petrological characteristics and sedimentary environment and poly rules of coal. The results show that the structure of the coal bearing section and the upper coal bearing section is strong and frequent, and the coal forming condition is poor, while the middle coal bearing section is easy to form thick coal seam in the Binhu Delta. Most of the coal seam formed in lake delta topset, extra thick coal seam formation and a large area of wetlands of delta plain.