| 煤岩体孔隙裂隙双重介质逾渗机理研究 |
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| 引用本文： | 冯增朝,赵阳升,文再明.煤岩体孔隙裂隙双重介质逾渗机理研究[J].岩石力学与工程学报,2005,24(2):236-240. |
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| 作者姓名： | 冯增朝 赵阳升 文再明 |
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| 作者单位： | 1. 太原理工大学,采矿工艺研究所,山西,太原,030024
2. 太原理工大学,采矿工艺研究所,山西,太原,030024;中国矿业大学,采矿系,江苏,徐州,221008 |
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| 基金项目： | 国家自然科学基金资助项目(50404017，50134040，50174040) |
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| 摘 要： | 介绍了孔隙裂隙双重介质逾渗概率的研究方法,在此基础上研究了煤岩体的逾渗概率与渗透系数的关系,分析了裂隙、孔隙及二者共同作用对煤岩体逾渗概率的影响。结果表明:煤岩体这类孔隙裂隙双重介质的逾渗概率与其渗透系数呈指数规律;煤岩体的裂纹孔隙率决定孔洞孔隙率对其渗透性的影响程度;同时,裂隙还决定了孔隙裂隙介质的逾渗规律,使其与多孔介质的逾渗规律具有完全不同的形式。
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| 关 键 词： | 岩石力学 孔隙 裂隙 孔隙裂隙介质 渗透系数 逾渗概率 |
| 文章编号： | 1000-6915(2005)02-0236-05 |
| 收稿时间： | 2003-3-7 |
| 修稿时间： | 2003-7-12 |
PERCOLATION MECHANISM OF FRACTURED COAL ROCKS AS DUAL-CONTINUA |
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| FENG Zeng-chao,ZHAO Yang-sheng,WEN Zai-ming.PERCOLATION MECHANISM OF FRACTURED COAL ROCKS AS DUAL-CONTINUA[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(2):236-240. |
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| Authors: | FENG Zeng-chao ZHAO Yang-sheng WEN Zai-ming |
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| Affiliation: | FENG Zeng-chao1,ZHAO Yang-sheng1,2,WEN Zai-ming1 |
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| Abstract: | Coal rocks are a natural fractured porous media. The pores and fractures have great influence on permeability. This paper presents a new method for estimating percolation probability of the fractured coal rocks as dual-continua,and develops the relationships between percolation probability and permeability of coal rock samples for quantification of the influence of fractures and pores on coal rocks. The results indicate that the relation between the permeability and percolation probability of the coal rocks follows a power function. The results show that the fracture porosity determines the effects of the pore porosity on the samples and the fractures dominate the overall permeability of the fractured coal rocks,which is totally different from the results of conventional concept of porous media. |
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| Keywords: | rock mechanics pores fissure fractured porous media permeability coefficient percolation probability |
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