论文部分内容阅读
平煤集团梨园矿宁庄井作为华北型煤田代表,其二1煤的开采受到底板灰岩水的影响较大。根据宁庄井具体的水文地质特征,应用有限差分原理,对研究区的二1煤底板含水层进行了概化模拟,通过空间离散、应力期确定、复杂断层的wall处理、源汇项嵌入,对2003年到2006年应力期内研究区二1底板的含水层渗流场进行了模拟,在处理中突出了复杂条件下断层的处理。经过实际拟合,最终建立了宁庄井二1煤层底板含水层渗流场模型,并预测了5a、10a后的渗流场的变化规律。研究认为在目前矿井开采方式和抽水配置不变的情况下,宁庄矿井二1煤底板含水层的水位仍然保持较高的水平,尤其当向西北方向开拓经过滑动构造时,突水的危险性仍然较大。最后依据研究结论提出了相应的防治水措施。
The Pingzhuang Pear Orchard Ningzhuang well, as a representative of the North China type coalfield, has a greater influence on the mining of its second coal than the limestone water of the basement. According to the specific hydrogeological characteristics of Ningzhuang Well, finite element method is used to simulate the aquifers of II1 coal floor in the study area. Through spatial discretization, determination of stress period, wall treatment of complex faults, The seepage field of the aquifers in the bottom of the study area during the stress period from 2003 to 2006 was simulated and the treatment of faults under complicated conditions was highlighted. After actual fitting, the seepage field model of the bottom aquifer in Ningzhuangjing II1 coal seam is finally established, and the variation law of the seepage field after 5 years and 10a years is predicted. The study suggests that the water level of the aquifer in the coal seam floor of No. 2 coal seam of Ningzhuang Mine still remains at a high level under the current mining method and pumping configuration, especially when it opens up to the northwest through the sliding structure and the risk of water inrush Still larger. Finally, according to the conclusions of the study put forward corresponding measures to prevent and control water.