Characteristics of Telemagmatic Metamorphism of the Ceshui Formation Coal in Lianyuan Coal Basin

The Ceshui Formation coal is mostly anthracite and its metamorphism has been lessdocumented. By analyzing systematically the reflectance of vitrinite and the results of X-raydiffraction of the Ceshui Formation coal in the Lianyuan coal basin, the spatial variation characteristics of coal ranks, coal metamorphic regions, the extension of coal metamorphic beltS, coalmetamorphic gradients, coal chemical structure and the effect on the degree of metarnorphismof heat-prediction and -storage conditions, babied depth Of the Indosinian-Yenshanian granitesat the margins of the Lianyuan coal basin are discussed. The research results in conjunction ofthe features of regional hydrothermal alterations, endogenetic deceits with the Ceshui Formation coal measures, and the development of secondary vesicles indicate that the telemagmaticmetamorphism is the main factor leading to the metamorphism of the Ceshui Formation coal inthe region studied.

涟源煤盆地测水组煤的区域岩浆热变质作用

湘中涟源煤盆地测水组煤煤种单一，绝大部分为无烟煤，故以往有关其变质作用的研究较煤种多样化的龙潭组煤来说要少得多．为了改变这种状况，通过对研究区测水组煤镜质组反射率的系统测定和收集及煤的Ｘ射线衍射分析等手段，研究了涟源煤盆地测水组煤煤级、煤变质分区、煤变质带展布、煤变质梯度、煤化学结构的空间变化特征、煤盆地周缘印支－燕山运动期岩体的产热储热条件及埋深对煤变质程度的影响．上述研究结果及与煤共生的区域性热液蚀变、内生矿床、煤中次生气孔发育等特征均表明区域岩浆热变质作用是湘中涟源煤盆地测水组煤变质的主要原因．

湘中涟源煤盆地煤层气形成气藏的条件及其资源预测

湘中涟源煤盆地早石炭世测水组、晚二叠世龙潭组煤系是中国东南诸省境内最重要的煤系，具有较大的生气、储气能力。本文从煤系的构造热滨化、构造、沉积及煤层理深等方面论述了研究区测水组、龙潭组煤系中煤层气形成气藏的条件，并指出煤层气的开发远景区应该在煤盆地近南缘的诸含煤向斜南西扬起端，其中各主要区域性断裂交汇而成的断块是最重要的靶区。

湘中涟源煤盆测水组煤动力变质作用的特征及其成因探讨

从煤变质程度、煤变质特征、煤变质带展布、煤的物理性质和结构构造、煤化学结构等方面．论述了湘中涟源煤盆早石炭世测水组煤动力变质作用的特征，并对其成因进行了探讨。