综放开采断层活化突水渗−流转换试验研究

采矿与安全工程学报 ›› 2013, Vol. 30 ›› Issue (1): 30-37.

综放开采断层活化突水渗−流转换试验研究

1. 中国矿业大学资源与地球科学学院，江苏徐州 221116； 2. 兖矿集团有限公司博士后工作站，山东邹城 273500； 3. 山东省地质科学实验研究院，山东济南 250013

收稿日期:2012-02-06 出版日期:2013-01-15 发布日期:2013-01-17
作者简介:乔伟(1984-)，男，山东省蒙阴县人，博士(后)，讲师，从事工程地质、矿井防治水方面的研究。 E-mail：qweiqlm@163.com Tel：13813478097
基金资助:
国家自然科学基金项目(41172290)；

江苏高校优势学科建设工程项目；

中国矿业大学人才引进项目；

Experimental study on the conversion from seepage to flow of water inrush aroused by fault activation in fully mechanized top-coal caving

Received:2012-02-06 Online:2013-01-15 Published:2013-01-17

摘要/Abstract

摘要： 为了揭示断层活化突水水量变化过程机理，在综放开采工作面断层突水实例分析的基础上进行了断层活化突水相似材料模拟，设计了在断层上盘下方开采和下盘下方开采时不同水压力作用下的断层活化突水的试验模型。根据试验所获得的数据分析了水流雷诺数、断层带充填物和断层带空隙度随时间的变化规律，并对比了空隙度和涌水量随时间的变化规律。根据分析结果得到综放开采断层活化突水经历了孔隙流—裂隙流—管道流过程，并根据试验得到的充填物涌出量随时间的变化规律判断孔隙流向裂隙流转换的时刻(7，9，13和15 s)，根据空隙度随时间的变化规律判断裂隙流向管道流转换的时刻(30，35和40 s)。试验结果解释了综放开采断层活化突水渗流转换现象，与现场综放开采断层突水实例表现特征吻合。

关键词: 综放开采, 断层活化, 突水, 渗-流转换, 相似材料模拟

Abstract: In this paper, to reveal the water change process of water-inrush aroused by fault activation, based on the example analysis of water inrush through fault in the fully mechanized top-coal caving face, the similar material simulation models of water inrush aroused by fault activation under different water pressures were designed, including the coal mining under the hanging wall and foot wall of fault, respectively. Meanwhile, the variation rules of Reynolds numbers, fillings and voidage of fault zone along with time were analyzed according to the test data, and the variation rules of voidage and water inflow along with time were comparized. The results show that the water inrush aroused by fault activation in fully mechanized top-coal caving has experienced the process of pore fluid, fracture flow and pipe flow, and the time when the pore fluid converses into fracture flow（7，9，13 and 15 s）is identified according to the variation law of filling emission quantity along with time, while the time when the fracture flow converses into pipe flow（30，35 and 40 s）is obtained according to the change law of voidage along with time. The test results have explained the conversion phenomenon from seepage to flow of water inrush aroused by fault activation in fully mechanized top-coal caving, and are anastomotic with the expressive characteristics of field examples.

Key words: fully mechanized top-coal caving, fault activation, water inrush, conversion from seepage to flow, similar material simulation

乔伟, 胡戈, 李文平. 综放开采断层活化突水渗−流转换试验研究[J]. 采矿与安全工程学报, 2013, 30(1): 30-37.

QIAO Wei, HU Ge, LI Wen-Ping. Experimental study on the conversion from seepage to flow of water inrush aroused by fault activation in fully mechanized top-coal caving[J]. Journal of Mining & Safety Engineering, 2013, 30(1): 30-37.

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