中文摘要：

围绕西北煤炭开采中水资源保护基础理论研究中的关键科学问题,介绍了西北煤田地层结构特征、采动覆岩结构与隔水层稳定性时空演变规律和水资源保护性采煤机理与控制理论等方面的研究进展情况。构建了西北矿区不同生态地质环境类型生态-水-煤系地层空间赋存结构模型,分析了浅表层水分布特征与水循环运移规律;提出了覆岩裂隙表述和重构方法,构建了上位隔水层-中位阻隔层-下位基本顶结构协同变化模型和渐序变化模型;构建了该区初/复采煤层保水开采技术适用性分类方法体系,探索了新式短壁保水采煤方法,为构建基于水资源保护的西北煤炭科学开采方法体系奠定基础。

英文摘要：

In terms of the key scientific problems in the research of basic theory on water resources protection during mining on coal seam in northwest China, this paper introduces the following research developments：the stratigraphic structural characteristics of northwest coalfield, the space-time evolution laws on the stabilities of the overlying strata structure and aquiclude, and the mechanism and control theory of water-protection coal mining. The geometrical struc- ture model of ecology-water-coal measure rock strata was established based on different eeo-geological types in north- west mining area. Distribution characteristics and water cycle migration regularity of the shallow water resources were analyzed. The expression and reconstruction method of overlying rock fracture was proposed. The coordinated variation model and the gradual variation model on the relationship among upper aquiclude, medium barrier strata and lower main roof were built. A classification system on water-protection mining technology referred to virginal/repeated mining was constructed. A new type of shortwall mining with water protection was explored. The above works lay a foundation for scientific coal mining method on water protection in northwest of China.