CHANNEL MODEL OF FLOW THROUGH FRACTURED MEDIA
CHANNEL MODEL OF FLOW THROUGH FRACTURED MEDIA
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DOI：
10.1029/wr023i003p00467
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发表时间：
1987-03-01
影响因子：
5.4
通讯作者：
TSANG, CF
中科院分区：
文献类型：
--
作者：
TSANG, YW;TSANG, CF
本文在综述近年来裂隙岩石渗流理论和实验研究的基础上，从变孔道渗流的角度研究了致密裂隙介质中的流体流动和溶质运移。通道的特征是孔径密度分布和空间相关长度。沿通道的孔径分布被统计地生成，并与断口表面的实验室测量结果进行比较。计算的示踪剂在裂隙介质中的两点之间的传输是通过许多这样的通道进行的。示踪剂突破曲线显示的特征与Moreno等人最近的数据很好地对应，这支持了我们模型的有效性。沿通道计算的压力分布提供了可能的测量结果，这些测量结果可能有助于识别通道的几何特性。最后，对不同程度正应力作用下的单裂缝示踪剂穿透曲线进行了预测。这些建议了可能进行的实验室实验，以验证这一概念模型。
On the basis of a review of recent theoretical and experimental studies of flow through fractured rocks, we have studied the fluid flow and solute transport in a tight fractured medium in terms of flow through channels of variable aperture. The channels are characterized by an aperture density distribution and a spatial correlation length. Aperture profiles along the channels are statistically generated and compared to laboratory measurements of fracture surfaces. Calculated tracer transport between two points in the fractured media is by way of a number of such channels. Tracer breakthrough curves display features that correspond well with recent data by Moreno et al., which lends support to the validity of our model. Calculated pressure profiles along the channels suggest possible measurements that may be useful in identifying the geometrical characteristics of the channels. Finally, predictions were made for tracer breakthrough curves in the case of single fractures under various degrees of normal stress. These suggest possible laboratory experiments which may be performed to validate this conceptual model.