基于生态环境保护背景下高位定向勘探隔污抽采方法研究  

Study on High-level Directional Exploration Based on Ecological Environment Protection

作　　者：李瑾[1] Li Jin(Hunan Provincial Key Laboratory of Water Pollution Control Technology, Hunan Research Academy of Environmental Sciences, Changsha 410004, China)

机构地区：[1]湖南省环境保护科学研究院水污染控制技术湖南省重点实验室,湖南长沙410004

出　　处：《环境科学与管理》2021年第5期74-78,共5页Environmental Science and Management

基　　金：湖南省土壤污染详查专项:湖南省企业地块初步采样调查(试点)(湘财建二指【2018】0066号)。

摘　　要：提出了隔污染物干扰的高位定向长钻孔瓦斯抽采效果分析。确定了高位定向长钻孔视倾角与真倾角的转换关系,设计高位定向长钻孔轨迹;计算出高位定向长钻孔瓦斯的含量,依托定向长钻孔瓦斯线性流动的运动方程,得到二维经向高位定向长钻孔瓦斯流动方程,完成高位定向长钻孔瓦斯流动方程的建立;最后通过高位定向长钻孔瓦斯抽采的数值模拟,实现了隔污染物干扰的高位定向长钻孔瓦斯抽采效果分析。实验结果表明,设计方法的高位定向长钻孔瓦斯的抽采能力提高了73.24%。The effect analysis of gas drainage by high position directional long boreholes is put forward.The conversion relationship between apparent inclination angle and true inclination angle of high-level directional long borehole is determined.The trajectory of high-level directional long borehole is designed and the gas content of high-level directional long borehole is calculated.The gas flow equation of two-dimensional meridional high-level directional long borehole is obtained based on the motion equation of gas linear flow in the directional long borehole.The gas flow equation of high-level directional long borehole is established.The numerical simulation of gas drainage by directional long boreholes realizes the effect analysis of gas drainage by directional long boreholes.The experimental results show that the gas drainage capacity of the high position directional long borehole is increased by 73.24%.

关 键 词：隔污染物干扰 高位定向 长钻孔 瓦斯抽采 流动方程 数值模拟 

分 类 号：X32[环境科学与工程—环境工程]