| 榆神矿区基岩顶面土层缺失机理分析及其防治水意义 |
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| 引用本文： | 李智学,李明培,申小龙,鲁文宇.榆神矿区基岩顶面土层缺失机理分析及其防治水意义[J].煤田地质与勘探,2018,46(6):102-107. |
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| 作者姓名： | 李智学 李明培 申小龙 鲁文宇 |
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| 摘 要： | 为研究榆神矿区局部基岩顶面中新世-中更新世土层缺失的机理及其与矿井涌水灾害的关系，采用地质钻探、野外观测、数理统计的方法分析了基岩顶面标高与残留土层厚度的关系，运用"将今论古"的方法分析了土层成因及剥蚀机理。结果表明:榆神矿区土层剥蚀是降水、风和线状流水地质营力共同作用的结果，线状流水是土层颗粒冲蚀以及土层纵向剥蚀直至缺失的主要因素。榆神矿区基岩顶面标高与残留土层厚度呈正相关线性耦合关系，土层缺失可以作为古河流发育的直接标志，据此恢复了与基岩顶面连通的古河流形态、分布范围及古分水岭。基岩顶面古河床充填的含水层是煤矿涌水的主要充水来源，将对煤矿安全生产构成威胁。
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| 关 键 词： | 土层 基岩顶面 古河流 防治水 榆神矿区 |
| 收稿时间： | 2018-04-25 |
Genetic analysis of the bedrock top surface soil layer deletion and its significance for water prevention in Yushen mining area |
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| Abstract: | In order to study the genetic of the Miocene-Middle Pleistocene soil layer deletion and its relationship with the mine gushing water in Yushen mining area, we used core drilling, field observations and mathematical statistics to analyze the relationship between bedrock top elevation and soil layer residual thickness, and used the principle of "the present is the key to the past" to analyze the genesis and erosion mechanism of the soil layers. The results showed that the erosion of the soil layers in Yushen mining area was the result of the joint action of precipitation, wind, and the linear flowing water. The linear flowing water was the main controlling factor of soil layers vertical erosion until complete deletion. There was a positive linear correlation between the bedrock top elevation and soil layer residual thickness in Yushen mining area. The lack of soil layer could be used as a direct indicator of the development of paleorivers, thereby restoring the Miocene-Middle Pleistocene paleorivers formation, distribution and ancient watershed that communicated with the bedrock top surface. The aquifer filled with paleorivers on the bedrock top surface was the main source water for coal mine gushing, which would bring great harm for the coal mines safety production. |
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