三维地矿工程体视化技术

描述了体视化技术的主要过程。对地矿工程的两种数据，即离散的钻孔采样数据和连续的工程布置几何模型数据．分别通过插值处理和体素化处理形成三维规则体数据场。最后，通过对体视化的各种算法和地矿工程数据的特点进行了剖析，给出了一种改进的光线投射法，并结合某一铁矿山的情况进行了模型验证。     

创新理念，激活地热洁净能源勘查与开发

地热资源是本土绿色可再生能源。煤、石油、天然气化石类能源的日趋紧张和造成的环境污染将严重影响着经济社会的发展和人类的生存环境。为此，大力开发利用地热洁净资源具有重大意义。通过学习国务院《关于加强地质工作决定》，对我国地热资源勘查与开发浅谈了一些认识和建议，并认为只有创新理念，才能激活地热洁净能源的勘查与开发。     

杨家坪地面沉陷机理及预测分析

杨家坪辖区内煤矿资源十分丰富，自20世纪90年代以来，该村开始出现裂缝、地面塌陷等灾害，且呈加剧之势。对该村地面沉陷机理进行分析并建立了相应的模型对沉陷进行了预测，预测结果与实际较符合。     

试论国有地勘单位“十四五”发展规划编制的取向与要点

“十四五”时期,是国有地勘单位发展与改革的重要历史转折期,编制好“十四五”发展规划对促进行业及队伍发展意义重大。首先要做好生产力发展水平的评价工作,精准把握来自内部条件和外部环境的机遇和挑战。要紧紧围绕担当本地区资源和环境保障来构思未来五年的发展蓝图,策划好地质勘查、生态建设、工程建设、矿业开发、地勘延伸五大板块,并从政策、体制、项目、科技、人力、文化六个方面制定好保障措施。     

贵州省德江县地质灾害及其影响因素分析

为了得到德江县地质灾害的发育特征及其影响因素,在分析研究区基本和地质特征的基础上,对区内不同类地质灾害统计分析,查明地质灾害发育的时空特征以及探讨不同地质灾害发育的影响因素,综合分析得到研究区地质灾害发育的总体特征,为预防和最大限度地避免重大地质灾害造成的群死群伤事故提供依据。     

Modeling shallow marine carbonate depositional systems

Geological Process Models (GPMs) have been used in the past to simulate the distinctive stratigraphies formed in carbonate sediments, and to explore the interaction of controls that produce heterogeneity. Previous GPMs have only indirectly included the supersaturation of calcium carbonate in seawater, a key physicochemical control on carbonate production in reef and lagoon environments, by modifying production rates based on the distance from open marine sources. We here use the residence time of water in the lagoon and reef areas as a proxy for the supersaturation state of carbonate in a new process model, Carbonate GPM. Residence times in the model are calculated using a particle-tracking algorithm. Carbonate production is also controlled by water depth and wave power dissipation. Once deposited, sediment can be eroded, transported and re-deposited via both advective and diffusive processes. We show that using residence time as a control on production might explain the formation of non-ordered, three-dimensional carbonate stratigraphies by lateral shifts in the locus of carbonate deposition on timescales comparable to so-called 5th-order sea-level oscillations. We also show that representing supersaturation as a function of distance from open marine sources, as in previous models, cannot correctly predict the supersaturation distribution over a lagoon due to the intricacies of the flow regime.     

Excavation cycle times recorded during sinking of a deep shaft in crystalline rock – A case example at Ventilation Shaft of Mizunami URL,Japan

Realistic and properly planned excavation cycle times developed prior to tunnel construction are an important issue for dependable project management, including cost estimation and time saving. Existing design studies, conducted to estimate the total cost for geological disposal, have been limited to estimates of approximate construction total time schedules. There were no case studies which compared the detailed excavation cycle time used in design studies with the actual results from an excavation taking into account each excavation cycle operation and task. In this paper, analyses of actual cycle time recorded during the sinking of the Ventilation Shaft of the Mizunami Underground Research Laboratory and comparison with the planned cycle time developed in the design stage are intended for an evaluation of the baseline work plan and schedule and for optimization of the calculations for application to shaft construction in any future repository in Japan. Actual times to perform three operations, drill and blast, muck removal and concrete lining emplacement were much larger than expected and represent the largest portion of the total excavation cycle time and had the largest impact on the efficiency of the excavation cycles and schedules. Operating at increasingly greater depths and excavating harder, more competent rock combined to significantly affect the shaft sinking speed. The underlying reasons for increases in actual times for the excavation cycle operations compared to their design estimates fall into three categories: constraints on construction; to ensure safety; and maintenance.     

云南省主要地质背景区铜、锰、锌、镁、钾在岩石-土壤-饲料系统的分布与迁移规律研究

对云南省6个主要地质背景区的土壤、岩石和饲料样品的铜、锰、锌、镁和钾元素进行测定分析。结果表明:玄武岩和碳酸盐岩红壤区土壤和饲料钾、镁、锌、锰和铜元素含量较丰富;碳酸盐岩、碎屑岩和玄武岩混合型黄红壤区居中;而由碎屑岩和变质岩发育的土壤区土壤和饲料钾、镁、锌、锰和铜元素最低。饲料中钾、镁、锌、锰和铜的含量受地质背景值,特别是土壤中元素的丰度的影响不大。     

地学应用中的便携式微机多道能谱仪

便携式机多道能谱仪以笔记本式计算机的为核心,采用１２位逐次逼近型Ａ／Ｄ转换芯片,研制成软硬件相结合的２０４８道能谱仪,讨论了适用于地学的野外微机多道能谱仪的硬件电路和软件特点,以及在γ能谱测量和Ｘ荧光测量全谱分析中的初步应用情况,该仪器及其研制技术也适用于其他有关核潜测量研究。     

发展石油地质理论寻找更多的油气田

论述了松辽盆地指导寻找油气的地质理论的主要认识和发展,提出了地质理论、工程技术、组织管理要三位一体地抓上去,为大庆探区提供更多的后备储量。