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首页> 外文会议>Progress in Safety Science and Technology vol.4 pt.B >Coalbed Gas Occurrence State On Plate Tectonics Background in China
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Coalbed Gas Occurrence State On Plate Tectonics Background in China

机译：中国板块构造背景下煤层气赋存状态

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摘要

The actions of plate tectonic in different geological eras in China have been studied, which include its domination of the conditions of formation and preservation of gas to the coaly stralum, and its domination of regions in which the coalbeds have undergone some effects from drape, rupture, extrusion and shearing. Coalbeds of the carboniferous-permian are controlled by the North China landmass and the South China plate.Within the North China landmass, the gas contents of coalbeds are larger, the tectonic conditions are steady,the structures of coalbeds are destroyed lightly, so that is the favorable area to developed gas resources. Within the South China, the conditions of gas' formation and its conservation are very nice together with the high grade coalification, the gas contents of coalbeds are very large too, but the structures of coalbeds are destroyed intensely. The coalbeds formed in morden plate's evolution period are lack and dispersive, that are commonly distributed in the West China. Within the area, the conditions of gas' formation and its conservation are very bad on most of coalfields, and the gas contents of coalbeds are always low, while some local sections are different.
机译：研究了中国不同地质时代的板块构造作用，包括对煤层气形成和保存条件的控制，以及对垂悬，破裂作用影响煤层的地区的控制作用。 ，挤压和剪切。石炭二叠纪煤层受华北陆块和华南板块控制。在华北陆块内，煤层含气量较大，构造条件稳定，煤层结构被轻度破坏，因此发达的天然气资源的有利地区。在华南地区，随着高阶煤化作用，天然气的形成条件和保护条件都很好，煤层的瓦斯含量也很大，但煤层的结构却遭到严重破坏。现代板块演化时期形成的煤层缺乏且分散，普遍分布于中国西部。在该区域内，大多数煤田的瓦斯形成条件及其保护条件非常恶劣，煤层气含量始终较低，而局部地区却有所不同。

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