伊犁盆地南缘脱维勒克煤田水文地质特征分析
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摘要
通过分析伊犁盆地南缘脱维勒克煤田钻探、测井资料、含水岩性组合及出露特征,查明了煤田含水层与隔水层的分布规律,含水层可分为新生代的第四系、新近系的孔隙潜水含水层和中生代侏罗系的层间裂隙孔隙承压水含水层两大类。隔水层自上而下共分为9层,其中第一、四、五、九层隔水性强并且分布稳定。煤层顶底板层间承压水、地表水和第四系水是煤田的主要充水来源。通过分析砂岩厚度等值线图,认为煤田中部砂岩富水性最好,西部次之。该研究为煤田地下水的进一步勘查研究和合理开发提供科学依据,对正确评价伊犁盆地南缘地下水资源具有重要的意义。
Through the analysis of coal drilling,logging,combinations of aquifer and characteristics of outcrops in Tuoweileke Coal-field in Southern Margin of Yili Basin,the distribution laws of coalfield's aquifer and aquiclude were discerned. The aquifer can be divided into two major categories: Cenozoic Quaternary or Neogene aquifer and interlayer fissure pore confined water aquifer in Mesozoic Jurassic. Nine levels may be recognized by aquiclude,with the strong and stable property in the 1,4,5 and 9 layers. Confined water in seam top and floors,surface waters and water in Quaternary are the coal water's three main filling sources. According to the analysis of sandstone thickness contour map,it was thought that the sandstone wealthy water is the best in the central part of coalfield,western part takes the second place. The result of research can provide a scientific basis for further exploration research and reasonable development of coalfield groundwater,and has important significance to the correct evaluation on ground water resources of the southern margin of Yili Basin.
Through the analysis of coal drilling,logging,combinations of aquifer and characteristics of outcrops in Tuoweileke Coal-field in Southern Margin of Yili Basin,the distribution laws of coalfield's aquifer and aquiclude were discerned. The aquifer can be divided into two major categories: Cenozoic Quaternary or Neogene aquifer and interlayer fissure pore confined water aquifer in Mesozoic Jurassic. Nine levels may be recognized by aquiclude,with the strong and stable property in the 1,4,5 and 9 layers. Confined water in seam top and floors,surface waters and water in Quaternary are the coal water's three main filling sources. According to the analysis of sandstone thickness contour map,it was thought that the sandstone wealthy water is the best in the central part of coalfield,western part takes the second place. The result of research can provide a scientific basis for further exploration research and reasonable development of coalfield groundwater,and has important significance to the correct evaluation on ground water resources of the southern margin of Yili Basin.
引文
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