陕北榆神府矿区煤炭资源开发主要水工环问题及防治对策   总被引：19，自引：0，他引：19  

叶贵钧  张莱等 《工程地质学报》2000,8(4):446-455

分析了榆神府矿区煤炭资源开发所面临的主要水文、工程、环境地质问题。以水文工程地质条件研究为基础 ,给出了榆神府矿区土地沙漠化、水土流失和水环境受开采影响的预期结果。并提出了实现保水采煤的水工环技术方案和工程措施建议。  相似文献   

赞比亚谦比西铜矿水文地质条件和疏干方案研究   总被引：3，自引：0，他引：3  

徐京苑  周贵斌 《工程地质学报》2000,8(2):180-185

分析了赞比亚谦比西铜矿水文地质条件的特点及其对矿山防治水的影响。提出了与当地习惯做法不同的本中段为主疏干、放水工程非均匀布置的治水方案 ,以及保证方案得以成功实施所应采取的措施。  相似文献   

Research on red tide occurrences using enclosed experimental ecosystems in west Xiamen Harbor, China—Relationship between various factors and red tide occurrences     

Lin Yu  P. J. Harrison 《中国海洋湖沼学报》2000,18(2):148-156

A series of enclosed ecosystem experiments were conducted in a land-based tank near the seaside of West Xiamen Harbor. The results of experiments conducted in different seasons and years showed a repeatable phytoplankton succession. In this relatively stable ecosystem with added nutrients and trace metals, diatoms dominated initially, dinoflagellates dominated in the later stage, and dinoflagellate red tides eventually occurred. Vitamin B₁₂ enrichment may speed up this succession process. Stirring the water column could stop this process. Soluble Mn at a level of 3–4 μg/L in seawater, which also is the existing concentration of soluble Mn in Xiamen Harbor seawater, is sufficient for the multiplication of algae and occurrence of red tide. The present study showed that excessive soluble Mn in Xiamen Harbor cannot cause red tide, and that Fe was one of the important factors causing diatiom red tide in this present study. Project 39570145 supported by NSFC.  相似文献   

日照市露天开采矿山地质环境问题及恢复治理措施          下载免费PDF全文

汪继学  尹俊凯  陈鹏  张承斌 《山东国土资源》2018,34(12)

通过1∶5万矿山地质环境调查和遥感解译手段,对日照市矿山进行了全面的调查,查明各类矿山546处,主要集中在莒县和五莲县境内。除莒县刘官庄煤矿外,其余全部为露天开采矿山,主要选用直接开挖的方式,不仅破坏了地表环境,而且矿山生产活动产生的固体废弃物占用了大面积的土地。该文根据矿山地理位置及开采方式的不同,将相同类型的多个矿山划分为同一治理区,针对不同治理区的特点,采取科学有效的治理方法,建立健全矿山地质环境监督管理机制,切实解决矿山地质环境问题,改善生态环境。  相似文献   

直升机大比例尺航空物探在深部找矿中的应用前景   总被引：4，自引：1，他引：3  

熊盛青  于长春  王卫平  范正国  王乃东  万建华  张洪瑞 《地球科学进展》2008,23(3):270-275

为克服深部及矿区外围地面物探工作难度大、勘探周期长等不利因素,探讨了利用直升机快速获取高分辨率航空物探资料的方法。以成功应用实例,总结了直升机航空物探方法技术的特点和优势,并针对目前深部找矿工作区的部署特点,展望了直升机物探利用磁、电、能谱综合信息,挖掘矿山深部及外围资源潜力,直接为地质找矿服务的应用前景。  相似文献   

山东郓城矿井建设项目环境经济损益分析     

张梁  史登峰 《地质灾害与环境保护》2008,19(3):28-31

建设项目环境影响评价中的环境经济损益分析部分,目前多是定性的简单分析,不能满足环境影响评价精度要求。本文对山东里能集团有限公司巨野矿区郓城矿井环境影响评价时,探讨了定量化的环境经济损益分析。  相似文献   

郴州市玛瑙山铁锰多金属矿床地质特征     

曾昭健 《湖南地质》1997,(3)

玛瑙山铁锰多金属矿床产于棋梓桥组底部层位中，矿体呈似层状。除铁、锰、铅外，伴生有银、铟。由泥盆纪沉积期成岩成矿作用和燕山期岩浆热液叠加成矿作用所形成的沉积改造—岩浆热液叠加型铁锰多金属矿床。  相似文献   

Application of statistical methods to study seasonal variation in the mine contaminants in soil and groundwater of Goa, India   总被引：1，自引：0，他引：1  

D. S. Ratha  G. Venkataraman 《Environmental Geology》1997,29(3-4):253-262

 Soil and groundwater samples were collected during two seasons, premonsoon (April 1990) and postmonsoon (December 1990), and analyzed for major elements (Na, Mg, Al, Si, P, K, Ca, Ti, Mn and Fe), trace elements (Ni, Pb, Co, Cr and Zn) and water parameters (pH, conductivity, acidity, alkalinity, hardness, Cl and SO₄). All the data were subjected to linear discriminant analysis and partial correlation analysis in order to understand the seasonal variation in the data. It was observed from the Mahalanobis generalized distance that in both soil and groundwater samples there was a large difference in the concentration level of premonsoon and postmonsoon data. Linear discriminant functions were calculated to distinguish between premonsoon and postmonsoon samples. From the partial correlation coefficient analysis of soil samples, dominance of chemical weathering and precipitation of atmospheric fallout during monsoon were inferred. In the case of the water samples, high conductivity and high hardness in the postmonsoon samples as well as atmospheric fallout of Pb and Ni during the premonsoon period was suggested from partial correlation of water samples. Received: 19 September 1995 · Accepted: 12 December 1995  相似文献   

Modification of subsidence parameters for sloping ground surfaces by the rays projection method     

D. M. Shu  A. K. Bhattacharyya 《Geotechnical and Geological Engineering》1992,10(3):223-248

Summary This paper deals with the determination of subsidence parameters on a sloping ground surface above a completely mined underground panel in an inclined seam. A rays projection method is analytically developed to derive the subsidence components on the sloping ground surface from the corresponding ones on an assumed equivalent horizontal surface through the point of the mean elevation of the sloping surface above the extracted panel. Using the derived equations, the variation of subsidence with the inclination of the ground surface is analysed. An example is given to illustrate the application of the rays projection method in predicting subsidence effects on a sloping surface.  相似文献   

复杂结构煤层储量经济可采性分析：以五家煤矿为例     

范广忱 《煤田地质与勘探》1992,20(6):25-27

基于五家煤矿多年的生产经验及大量实际资料,作者提出了一种分析经济可采储量的思路和计算方法,指出复杂结构煤层储量的工业价值并不取决于煤层储量的大小。并用这个思路和方法对该矿现存储量进行经济可采性分析,缓和了生产与储量管理间的矛盾,为矿区建设及发展提供了较科学的依据,并在实践中取得了预期效果。  相似文献