| 老公营子煤矿煤层顶板突水机理 |
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| 引用本文： | 张雁.老公营子煤矿煤层顶板突水机理[J].煤田地质与勘探,2015,43(4):59. |
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| 作者姓名： | 张雁 |
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| 基金项目： | “十二五”国家科技支撑计划课题(2012BAC10B03)中煤科工集团西安研究院有限公司科技创新基金(2014MS012) |
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| 摘 要： | 为探查内蒙古平庄煤业(集团)有限责任公司老公营子煤矿Ⅰ03(2)工作面突水机理,从工作面涌(突)水量、含水层地下水位、突水点水质3个参数的动态变化判别了突水水源,认为第四系含水层水的参与使矿井涌水量变大而引发突水;从导水裂缝带发育高度、有效隔水层性质、基岩风化带厚度3方面分析了导水通道的形成过程,认为由导水裂缝带、顶板含水层水压作用下的渗流通道和基岩风化带组成的复合导水通道是突水发生的原因。揭示了煤层顶板突水是在特定地质、采矿条件下发生的一个动态变化过程,导水裂缝带是否波及主要充水含水层并非突水是否发生的唯一判据。
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| 关 键 词： | 顶板突水 导水裂缝带 基岩风化带 有效隔水层 复合导水通道 突水机理 |
| 收稿时间： | 2014-09-28 |
Mechanism of water inrush in roof in Laogongyingzi mine |
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| Abstract: | In order to identify the water inrush mechanism in working face Laogongyingzi I03 (2), the water inrush source was analyzed from water quantity, water table changes and water quality, it is thought that the Quaternary aquifer water made water inflow greater that cause water inrush. From the height of water-flowing fractured zone, the thickness of weathering zone and the nature of effective water-resisting layer, the water inrush channel formation process was analyzed, and it is the composite channel composed by water-flowing fractured zone, seepage channel formed by roof water pressure and weathering zone. It is revealed that water inrush is a dynamic change process which occurs under the specific geological and mining conditions. |
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