| 论煤层的加积方式 |
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| 引用本文： | 赵万福.论煤层的加积方式[J].中国煤炭地质,2012(8):5-11,22. |
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| 作者姓名： | 赵万福 |
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| 作者单位： | [1]山西省煤炭地质114勘查院,山西长治046011 [2]山西省煤层气工程技术研究院,山西长治046011 |
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| 摘 要： | 煤层成因是煤地质学的核心。煤层是一种沉积地层,它遵循沉积学、地层学、岩石学以及矿床学的基本规律,也有其特殊性,其成因并不同于煤的成因。传统煤地质学的核心观点是煤层由泥炭沼泽演化而成,其本质就是成煤物质的垂向加积。通过对煤层垂向和侧向加积的分析对比以及大面积稳定展布的厚煤层低自然伽马多峰现象、层理与条带结构等沉积特征的研究,认为成煤物质是机械沉积的,煤层像大多数沉积岩层一样是侧向加积形成的。对于厚煤层而言,多期侧向加积产生了次生垂向加积,其形成过程不是一个简单的、连续的、线性的垂向累加过程,而是一个复杂的、不连续的、非线性的侧向叠合过程,成煤物质是不连续的、多期多源的,厚煤层中普遍存在的夹矸便是其不连续的证据,同时厚煤层是穿时的。煤层侧向加积与较深水或海相沉积共生,是一个有机连续的整体,符合瓦尔特相律和古生态学原理,符合煤层厚度、形态多变及下伏地层沉积体系多种多样,也符合成煤物质超巨量工业富集、含煤地层灰色灰黑色、煤矿床质量优良的事实。
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| 关 键 词： | 煤层 起源 泥炭沼泽 成层过程 垂向加积 侧向加积 全球变化 |
On Accreation Pattern of Coal Seams |
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| Zhao Wanfu.On Accreation Pattern of Coal Seams[J].Coal Geology of China,2012(8):5-11,22. |
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| Authors: | Zhao Wanfu |
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| Institution: | Zhao Wanfu (1. Shanxi Provincial No. 114 Coal Geological Exploration Institute, Changzhi, Shanxi 046011; 2. Shanxi Provincial CBM Engineering Technological Research Institute, Changzhi, Shanxi 046011) |
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| Abstract: | The origin of coal seams is the kernel of coal geology. Coal seam is a kind of sedimentary stratum, it adheres to the basic principles of the sedimentology, stratigraphy, petrology and study of ore deposits, hut still has its particularity, and its origin differs from origin of coal. Classic kernel viewpoint of coal geology is coal seam evolving from peat bog; its essence is vertical accretion of coal-forming material. Through coal seam vertical and lateral accretions contrastive analyses and large area stable distributed thick coal seam low gamma-ray multi-crest phenomenon, sedimentary features of bedding and banded structure studies have considered that the coal-forming material is mechanically deposited, while coal seam likes most sedimentary strata is laterally accreted. As to thick coal seams, multi-stage lateral accretions bring on secondary vertical accretions; their formation process is not a simple, consecutive, linear vertical progressive process, but a rather complicated, inconsecutive, nonlinear lateral superimposed process. Coal- forming material is inconsecutive, multi-staged and multi-sourced, ubiquitous parting in thick coal seams is the evidence of inconsequence, moreover, thick coal seams are diachronous. Coal seam lateral accretion coexisting with deeper water or marine deposit, which is an organically consecutive en bloc, in harmony with Walther＇s law of facies, principle of paleoecology, in harmony with coal seam thickness, changeable configuration, many and varied underlying sedimentary systems, also in harmony with coalforming material super huge industrial enrichment, coal-bearing strata gray, grayish black in color and coal deposit high quality facts. |
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| Keywords: | coal seam origin peat bog coal-forming process vertical accretion lateral accretion global changing |
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