靖远矿区采煤沉陷区复垦综合评价方法研究   总被引：1，自引：0，他引：1  

刘学成  韩书才 《中国煤炭地质》2008,(8):47-49

以靖远矿区为例,从土地复垦和恢复生态学的角度出发,建立了靖远矿区采煤沉陷区复垦综合评价系统,选择土壤条件（土层厚度、土壤质地、有机质含量、土壤水分）、地形改造条件（地面坡度、地表破坏程度、改造难易程度）、气候及水文条件（年降雨量、灌溉条件）作为分类及评价因子对复垦潜力进行评价。将采煤沉陷地分为四种潜力区,对每种潜力类型区的复垦开发利用方向进行了优化设计,从理论上和实践上对靖远矿区采煤沉陷地的复垦能力以及复垦过程中用地结构的优化作了探讨,以期对当地沉陷地的复垦提供一定的科学依据。  相似文献   

A Decision Support System for the Evaluation of Eco-engineering Strategies for Slope Protection     

S. B. Mickovski  L. P. H. Van Beek 《Geotechnical and Geological Engineering》2006,24(3):483-498

A decision support system (DSS) has been developed to assist expert and non-expert users in the evaluation and selection of eco-engineering strategies for slope protection. This DSS combines a qualitative hazard assessment of erosion and mass movements with a detailed catalogue of eco-engineering strategies for slope protection of which the suitability is evaluated in relation to the data entered. The slope decision support system (SDSS) is a knowledge based DSS in which knowledge is stored in frames containing rules that can evaluate the available information for a project, stored as project specific information (PSI) in a data file. The advantages of such a system are that it accepts incomplete information and that the qualitative nature of the information does not instil the user with a sense of unjustified exactitude. By its multidisciplinary and progressive nature, the DSS will be of value during the initial stages of an eco-engineering project when data collection and the potential of different eco-engineering strategies are considered. The accent of the output of the DSS is on the application of eco-engineering strategies for slope protection as an environmentally-friendly solution aiding sustainable development. For its acceptance within the engineering community, the DSS needs to prove its predictive capacity. Therefore, its performance has been benchmarked against successful and unsuccessful cases of slope stabilisation using eco-engineering. The target audience and the areas of application of this DSS are reviewed and the strategies for further development in this area suggested.  相似文献   

Assessment of Marine Clay Improvement Under Reclamation Fills by in-situ Testing Methods     

A. Arulrajah  H. Nikraz  M. W. Bo 《Geotechnical and Geological Engineering》2006,24(2):219-226

In ground improvement projects with prefabricated vertical drains, the duration of the preloading period is set in advance based on the predetermined time rate of consolidation of the compressible layer. If prediction is accurately done, the required degree of consolidation is met at the pre-determined preloading time. As such, there is a requirement for in-situ tests to be carried out just prior to the removal of surcharge to assess the degree of consolidation of the improved ground. In-situ tests were carried out after 23 months of surcharge loading at the In-Situ Test Site within the Changi East Reclamation Project in the Republic of Singapore. In-situ testing works in this research study comprises the use of field vane shear, piezocone, flat dilatometer and self-boring pressuremeter. The in-situ tests were carried out to determine the shear strength and degree of consolidation of the Singapore marine clay at Changi after 23 months of surcharge loading. The In-Situ Test Site consisted of a Vertical Drain Area as well as an untreated Control Area. Both areas were located adjacent to each other and were surcharged simultaneously to the same level and surcharge left in place for a period of 23 months. Comparison was made between the in-situ test results of the Vertical Drain Area and the untreated Control Area.  相似文献   

地质单位财务管理咨询刍议   总被引：6，自引：0，他引：6  

宋建新 《中国煤田地质》2006,18(3):75-77,82

地质单位对自身无力解决的重要财务管理问题应该寻求外部咨询机构的有效帮助，针对地质单位财务管理中存在的主要问题提出需要咨询课题，而咨询机构通过对地质单位的财务状况进行调查分析后，提出科学、合理有效的财务管理改善方案和指导实施方案。  相似文献   

中国大陆科学钻探终孔及研究进展   总被引：24，自引：4，他引：24       下载免费PDF全文

许志琴杨经绥  张泽明刘福来杨文采  金振民王汝成  罗立强黄 力 董海良 《中国地质》2005,32(2):177-183

中国大陆科学钻探工程经过1309天的努力奋斗，于2005年1月23日，钻井终孔深度达到5118．20m。成为中国钻探技术发展的新里程碑。全面研究正在开展，在巨量物质深俯冲、超高压深俯冲与折返的精确定年、超高压岩石的原岩形成背景、上地幔流变学、地幔特殊新矿物发现、地下流体异常及地下微生物发现等方面已取得重要进展。  相似文献   

葛洲坝水利枢纽运行后泥沙冲淤变化分析   总被引：2，自引：1，他引：2       下载免费PDF全文

戴会超  何文社  袁杰  曹叔尤 《水科学进展》2005,16(5):691-695

对葛洲坝水利枢纽及其运行情况和河段特性进行了介绍。分析认为葛洲坝水利枢纽运行前后的入库水沙特性基本一致。探讨了库区冲淤变化特点、淤积量及其分布,冲淤过程及达到冲淤平衡的时间。对坝下游河床的冲淤过程、冲淤量、达到冲淤平衡的时间以及河床粗化,河底高程历年变化及同流量水位降低的原因、降低量及变化过程进行了分析总结。研究结果可为进一步探讨三峡水利枢纽与葛洲坝水利枢纽联合调度运用后水库泥沙淤积变化规律提供参考。  相似文献   

巨石、中粗砂填海区风动潜孔锤引孔钻进工艺应用的研究     

王平  彭晓阳等 《地质与勘探》2002,38(5):74-77,85

通过成功地解决深圳市好湾电厂（二期）基础工程H型桩沉入困难问题，使用各种风动潜孔锤在巨石、中粗砂填海区进行了引孔钻进工艺的试验研究及应用，对风动潜孔锤钻进工艺及其机具的使用作了进一步的分析研究，提出了风动潜孔锤使用过程中工艺方面的改进措施。  相似文献   

三峡工程库区巴东县赵树岭滑坡稳定性与防治对策研究   总被引：16，自引：2，他引：16  

唐辉明  马淑芝等 《地球科学》2002,27(5):621-625

赵树岭滑坡是三峡工程库区的重要滑坡，其稳定性直接关系到巴东新县城沿江大道的安全，并对新县城土地利用意义重大。在阐述赵树岭滑坡基本特征的基础上，运用水岩耦合三维有限元数值方法模拟了滑坡稳定性，预测了三峡水库蓄水后滑坡稳定性发展趋势和渗流特征。研究表明，水库蓄水及水位波动是影响滑坡稳定性的主要因素，三峡水库蓄水后，滑坡将发生局部失稳，必须加以治理，提出了滑坡防治的原则与对策。  相似文献   

长江三峡工程蓄水对链子崖危岩体T8-T12缝段稳定性影响研究   总被引：1，自引：1，他引：1  

胡亚波  黄学斌 《地球科学》2002,27(2):193-198

三峡水库蓄水后,已治理的链子崖危岩体,特别是T8-T12缝段岩体将受到江水的长期作用和影响,直接关系到防治工程的成败.通过大量实地调查和岩体测试,着重论述水库蓄水对T8-T12裂缝及其充填物的作用和影响;并以此为基础,用改进的Sarma法对该段危岩体的稳定性进行重新计算和评价,得出一系列新的结论:总体上,长江水位抬升后,水对裂缝的溶蚀作用和劈裂作用,使裂缝整体加宽,不利于危岩体的稳定;考虑岩体和承重阻滑键取长期强度和江水位骤然升降,以及地震影响,链子崖危岩体整体稳定性将恶化,但NE20°方向稳定程度好于NW350°.  相似文献   

加强科学管理是“九五”重点项目顺利实施的重要保障     

蒋秀琴  卢群 《东北地震研究》2002,(3)

本文对辽宁省防震减灾“九五”重点项目实施过程中采取的管理体制及管理措施进行了介绍。在管理体制上 ,建立了较为完善的组织机制构 ,按照全省地震系统一盘棋的指导思想 ,把市地震局作为一级管理机构 ,由市地震局负责本地区项目的实施与组织管理工作 ;在项目管理中 ,采取了跟踪检查、抓样板示范、抓项目施工质量、抓创新、抓技术培训等行之有效的措施 ,为“九五”重点项目的顺利完成并取得较好成绩提供了保证  相似文献