岩体裂隙网络串并组合渗透率预测模型

金属矿山 ›› 2012, Vol. 41 ›› Issue (10): 19-24.

岩体裂隙网络串并组合渗透率预测模型

梁浩楠^1,2，刘卫群^1,2，宋良^1,2

1.深部岩土力学与地下工程国家重点实验室；2.中国矿业大学力学与建筑工程学院

出版日期:2012-10-15 发布日期:2012-11-08
基金资助:
* 国家重点基础研究发展计划（973计划）项目(编号：2009CB219605)，国家自然科学基金项目(编号：41074040)。

Series-parallel Model for Forecasting Permeability of Fractured Rock Mass

Liang Haonan^1,2，Liu Weiqun^1,2，Song Liang^1,2

1.State Key Laboratory for Geomechanics & Deep Underground Engineering；2.School of Mechanics & Civil Engineering，China University of Mining & Technology

Online:2012-10-15 Published:2012-11-08

摘要/Abstract

摘要： 由三次方定理表达形式的转变，提出新的基于两端水头差的裂隙本征渗透率概念，分别探讨了裂隙在并联和串联情况下的等效本征渗透率。继而由岩体裂隙网络中裂隙的串并联关系，提出了岩体裂隙网络串并组合渗透率预测模型，首次提出了裂隙网络岩体本征渗透率概念。分别应用UDEC软件和所提出的串并组合渗透率预测模型对简单“人”字形裂隙进行了分析计算，得到了完全相同的结果。对两种理论的对比分析表明，二者在解决问题时是互逆的过程。所提出的裂隙网络岩体串并组合渗透率预测模型在实际应用中较为方便简单，也为煤矿突水的预测及防治打下了基础。

关键词: 单裂隙本征渗透率, 等效本征渗透率, 串并组合渗透率预测模型, 非连续面网络流动理论

Abstract: A new concept，single fracture intrinsic permeability，was put forward through transforming cubic law expression. Then the equivalent intrinsic permeability of the series fractures and the parallel fractures was respectively discussed. The series-parallel model for forecasting permeability of fractured rock mass was presented based on the series-parallel relationship between fractures. And，firstly，the concept of intrinsic permeability of fractured rock mass was put forward. In the paper，the series-parallel model and UDEC were respectively used to analyze a simple fracture network and the results were the same. The two theories are inversed in analyzing problems. However，the equivalent intrinsic permeability of fracture rock mass proposed by the series-parallel model can make it easier in practical application. The theory in the paper is also the basis for forecasting the coal mine water-bursting.

Key words: Single fracture intrinsic permeability, Equivalent intrinsic permeability, Series-parallel model for forecasting permeability, Discontinuous surface network flow theory

梁浩楠, 刘卫群, 宋良. 岩体裂隙网络串并组合渗透率预测模型[J]. 金属矿山, 2012, 41(10): 19-24.

LIANG Hao-Nan, LIU Wei-Qun, SONG Liang. Series-parallel Model for Forecasting Permeability of Fractured Rock Mass[J]. Metal Mine, 2012, 41(10): 19-24.

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