在北山煤矿地质构造特征研究的基础上,对该矿煤层形态和厚度的变化影响进行了初步分析和研究。结果表明,北山煤矿主采煤层形态和厚度的变化受横弯褶皱和纵弯褶皱的双重控制,近SN、EW和NE~NEE向的高角度正断层对37#、39#煤层影响最大,岩浆岩影响程度相对较弱。该研究可为北山煤矿下一步煤炭资源的合理开采提供一定的参考和指导。

Based on the geological structure characteristics of Beishan Colliery ,the paper makes a preliminary a-nalysis and research on the influence of geological structure on coal seam morphology and thickness ,which shows that the morphology and thickness of the main mining coal seam vary with the dual control of cross -bend fold and vertical-bend folds ,with the greatest effects of normal faults near SN ,EW and NE~NEE high angle on No .37 and No .39 coal seam and relatively week influence on magmatic rocks ,and provides a reference and guid-ance for rational exploitation of coal resources in Beishan coal mine in the future .

北山成矿带位于新疆东部、甘肃西北部和内蒙古西部，面积15万km2，是我国16个重点成矿带之一。采用SRTM-DEM作为DEM数据源，经数据处理，通过DEM与构造地质图叠加，实现北山成矿带三维构造地质图的制作。将二维构造地质图转向三维空间，增强图件的立体感和层次感，直观表达出北山成矿带地貌特点，便于分析构造与山脉走向的关系，从而缩短读图时间，提高效率和准确性。

Beishan mineralization belt is located within east of Xinjiang , northwest of Gansu and west of Nei Monggol , stretching in the area of 150,000 square kilometers , is one of 16 major metallogenic belt in China .Using SRTM DEM as the DEM data source and through data processing and the superposition of the geological structure map of BeiShan mineraliza -tion belt on the DEM, Preparation of the DEM 3D geological structure map of BeiShan mineralization belt was made .Finally the conversion of 2D geological structure map has been transformed into 3D space to enhance 3D effect and the hierarchy sense of geological structure map ,to express BeiShan mineralization belt geomorphological features and the analysis of rela -tionship between geological structure and strikes of the mountains .By using this method , the time for reading the map can be reduced,and the efficiency and accuracy improved .

对南蒙古戈壁天山地区哈拉莫里特锡钨矿强烈云英岩化花岗岩的锆石SHRIMP U-Pb定年分析,得到其侵位年龄为（214±3） Ma,表明该锡钨矿形成于早中生代三叠纪。结合已有资料的综合分析,提出中国北山地区存在2期钨锡成矿事件,即晚古生代泥盆纪和早中生代三叠纪。蒙古戈壁天山地区哈拉莫里特钨锡矿成矿时间与北山地区第二期钨锡成矿事件发生的时间相一致。根据构造演化与成矿作用时、空演化的耦合关系,提出中国北山与蒙古戈壁天山地区发育的2期钨锡成矿作用均形成于碰撞-碰撞后的构造背景,其中前者与敦煌地块和北山地块在早古生代末的碰撞事件有关,而后者则可能与古亚洲洋的最后闭合的造山作用有关。

SHRIMP U-Pb data of zircons from the strongly greisenized granite at the Khar Morit W-Sn ore deposit in Gobi Tianshan of South Mongolia shows that the emplacement age of granite intrusion is (214 ± 3) Ma, which indicates that the W-Sn mineralization of the deposit took place during Triassic in Early Mesozoic. According to the comprehensive analysis of the data avialable, the authors hold that two episodes of W-Sn mineralization existed in Beishan area of China: one in Devonian and the other in Triassic. The metallogenic time of the Khar Morit W-Sn deposit in Mongolia’s Gobi Tianshan is coeval with that of the second W-Sn ore-forming event in Beishan, China. The spatial-temporal relationships between the tectonic evolution and the W-Sn mineralization suggest that the W-Sn ore deposits produced during the two metallogenic episodes all occurred in a collision to post-collision setting. The Devonian W-Sn ore deposits were related to the collisional event between the Dunhuang an

风电场在建设的过程中具有扰动面积大、植被破坏点多面广、地表扰动强度差异显著,以及水土流失以水力侵蚀为主,点、线、面共存且侵蚀强度大等特点。该文以粤北山区风电工程为例,针对水土流失及工程特点,进行了防治分区和工程措施布设,并针对粤北山区植被特点,对植被措施恢复中的植物种类配置和后期护育管理进行了探讨。

Characteristics that large disturbance area , multiple vegetation destruction areas , significant differences of disturbance intensity among surfaces , predominately water erosion , and high erosion intensity with point , line and surface coexistence , have been shown in the wind farm construction .Take the wind power project in mountainous area of northern Guangdong as an example , aiming at the water and soil erosion and project features , control zoning and engineering measures layout have been constructed . Vegetation types''distribution and caring management in later period have been discussed based on the vegetation features in moun -tainous area of northern Guangdong .

甘肃北山是我国高放废物深地质处置的预选场址,其花岗岩具有完整性及均匀性好、孔隙率及渗透率低等重要特点。采用气体瞬态压力脉冲法测试不同围压下北山花岗岩在三轴压缩过程中的渗透率变化特征。结合花岗岩在偏应力演化过程中微裂纹的萌生、扩展机制以及应力–应变曲线的变化特征分析,采用细观力学方法研究北山花岗岩在三轴压缩过程中渗透率的演化机制。分析结果表明：（1）北山花岗岩的初始渗透率在10-19 m2量级,对应于应力–应变曲线,其渗透率曲线随着偏应力增加总体呈现出下降段、水平段、稳定增长段以及急剧上升段的变化特征;（2）初始微裂纹的压缩闭合可导致试样的渗透率下降约1个数量级,峰前破坏时渗透率的增幅可达2-3个数量级,围压从5 MPa增大至10 MPa可导致渗透率减小1个数量级;（3）细观力学模型的计算值与试验值吻合良好,北山花岗岩试样的宏观力学响应及渗透特性与试样内部微裂纹的细观结构特征及连通性的变化密切相关,岩石渗透率变化和损伤演化具有良好的一致性,且损伤的发育可导致渗透率呈现较弱的各向异性特征。研究成果对于我国高放废物深地质处置工程中围岩的开挖扰动机制、渗透特性演化规律以及处置库系统的性能评价具有重要意义。

Due to the good integrity,homogeneity and low porosity and permeability of Beishan granite,Beishan has been considered as a candidate for high-level radioactive waste repository. In this study,triaxial compression tests with the measurements of permeability were performed on granite samples using the gas pulse transient technique. Based on the observations of the initiation and propagation of microcracks in the granite samples and the characteristics of the strain-deviatoric stress curves,the permeability variation of the granite samples with the deviatoric stress was analyzed with a micromechanical model. The initial permeability of the Beishan granite at zero deviatoric stress state is in the magnitude of 10-19 m2. The permeability decreases in the initial region of microcrack closure,keeps constant in the elastic region,increase stably and then dramatically the following the unstable regions of crack growth. The closure of preexisting microcracks in the initial loading sta