Establishment of the equivalent structural model for the tectonic coal and some implications for the methane migration.
Establishment of the equivalent structural model for the tectonic coal and some implications for the methane migration.
复制标题
构造煤等效结构模型的建立及其对甲烷运移的一些启示（开放获取）
作者：
等效结构模型的建立是研究煤层气运移过程中简化煤基质和裂隙结构的基础。针对完整煤的环境影响评价已被许多学者提出并广泛应用，但针对构造煤的环境影响评价还未见文献报道。将完整煤的ESM应用于构造煤的煤层气运移特征研究是不合理的，因此建立构造煤的ESM是必要的和有意义的。在这项研究中，构造煤标本重塑从收集的煤粉，甲烷渗透性测试进行。通过对断裂构造的分析，建立了构造煤的ESM。结果表明，构造煤可以理想化为一个立方矩阵模型，在矩阵的12个边缘处具有方形截面的裂缝。构造煤渗透率与裂隙孔隙度之间的关系，由于ESM的变化，在构造煤中为二次曲线关系，而在完整煤中为三次曲线关系。构造煤的基质形状因子为480 bf/7a 3 m，远小于完整煤的基质形状因子。等效结构模型的建立是研究煤层气运移过程中简化煤基质和裂隙结构的基础。
The establishment of the equivalent structural model (ESM) is the foundation to simplify the structures of the coal matrix and fractures for the study of methane migration. The ESM of the intact coal has been proposed and widely used by many scholars, but the ESM of the tectonic coal has not been found in the literature. The application of the ESM of the intact coal to the tectonic coal is not reasonable for the study of the methane migration properties, so the establishment of the ESM for the tectonic coal is necessary and meaningful. In this study, a tectonic coal specimen was remodeled from collected coal powders, and methane permeability tests were conducted. Then the ESM of the tectonic coal was established by analyzing the fracture structure. The results show that the tectonic coal can be idealized as a model containing a cubic matrix with square section fractures located at the twelve edges of the matrix. Because of the variation of the ESM, the permeability and the fracture porosity has a square relation for the tectonic coal, rather than the cubic relation for the intact coal. The matrix shape factor of the tectonic coal has also been proposed, which has a value of 480bf/7a3m and is much smaller than that of the intact coal. The establishment of the equivalent structural model (ESM) is the foundation to simplify the structures of the coal matrix and fractures for the study of methane migration.
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影响因子：
3.2
作者：
Tutak, Magdalena;Brodny, Jaroslaw
通讯作者：
Brodny, Jaroslaw
影响因子：
5.6
作者：
Connell, Luke D.;Lu, Meng;Pan, Zhejun
通讯作者：
Pan, Zhejun
DOI：
10.2118/5719-pa
发表时间：
1976-01-01
期刊：
SOCIETY OF PETROLEUM ENGINEERS JOURNAL
影响因子：
--
作者：
KAZEMI, H;MERRILL, LS;ZEMAN, PR
通讯作者：
ZEMAN, PR
影响因子：
5.6
作者：
Liu, Jishan;Chen, Zhongwei;Mao, Xianbiao
通讯作者：
Mao, Xianbiao
扩散吸负压对煤层气抽采的影响及提高瓦斯利用率的新措施
影响因子：
7.4
作者：
Dong, Jun;Cheng, Yuanping;Hu, Biao
通讯作者：
Hu, Biao