油藏开发地质勘探的常见问题分析

就油藏开发地质勘探的常见问题进行分析,从油藏开发的分类、油藏开发程序以及油藏储量计算等方面综合考虑影响油藏开发的因素,为现实油藏开发工程提供理论依据,提升油藏开发技术水准。     

平顶山矿区地质勘探与建井工程地质条件分析

针对矿区地质勘探侧重于开采阶段的工程地质工作,忽视了建井期间的工程地质工作,因而造成部分工作的重复投入,引起人力、物力、财力的浪费和施工周期的延长这一带有普遍性的问题,详细讨论了矿区岩体工程地质稳定性问题,并指出今后在地质勘探中增加工程地质勘探的必要性。     

电转气地质储能技术的经济性分析

电转气(power-to-gas)是一项将电能转化为高能量密度可燃气体的化学储能技术,该技术与地质储能相结合,有望满足未来大容量储能需求,并成为未来有效储能技术选择之一.电转气地质储能技术中涉及电离制氢、甲烷化、二氧化碳(CO2)地质储存、人工合成甲烷(CH4)地质储存4个阶段.由于电转气地质储能技术发展处于初步阶段,...     

地质剖面计算机辅助绘图的数学模型及算法

通过对一些插值法从运算性能、误差和精度等方面进行比较后,选定三次样条函数插值法作为地质剖面图中自由曲线的计算机辅助绘图的数学模型。对于地质剖面图中断层分界线遇到钻孔或平洞的情况,文中建立了它们的求交、平移和裁剪算法。     

Stress corrosion cracking susceptibility of P285NH and API 5L X65 steel grades in the high-level radioactive waste repository cell concept

Since 2014, the concept developed for the disposal of high-level radioactive waste in the French deep geological repository project Cigéo includes a cement-based grout material. This cement-based grout material will be injected between the casing and the claystone to neutralize the potential acidity resulting from the claystone oxidation induced by the drilling process of the disposal cell. In these conditions of pH (around 10.5) and temperature (90°C, maximum expected during the disposal), the metallic materials could be sensitive to stress corrosion cracking (SCC). In this project, different environments (aerated or deaerated, at room temperature or at 90°C) and synthetic solutions are considered to reproduce the different periods expected during the long life repository. The project is based on electrochemical measurements (polarization curves to define the SCC critical domain of potentials), slow strain rate tensile tests, and long-term immersion for crack initiation and propagation tests.     

基于昆明市某农贸市场拟建场地的工程地质条件研究

工程地质条件研究是提高工程建设质量和确保工程施工顺利的基础,本文研究表明:拟建区域地下水对砼结构的腐蚀性等级为微腐蚀,对砼结构中的钢筋的腐蚀等级为微腐蚀;场地属稳定的建筑场地,适宜拟建工程建设,但存在特殊性岩土,主要有人工填土、软弱土层、残积土及风化岩,对桩基成桩及成桩质量有一定的不利影响;拟建场地地基土为不液化地基,...     

Corrosion of copper-coated used nuclear fuel containers due to oxygen trapped in a Canadian deep geological repository

The Nuclear Waste Management Organization is evaluating the safety and feasibility of the permanent disposal of used nuclear fuel in a deep geological repository. Their current design concept utilises copper-coated steel used fuel containers to isolate the waste from the environment. Immediately following repository closure, a finite quantity of O₂ will be trapped inside the repository and could cause some amount of oxic corrosion to the outer copper layer of the containers. On a per container basis, 13?mol of O₂ will be trapped in the repository rooms at the time of closure, based on reference design dimensions. This corresponds to a maximum depth of copper corrosion of 81?μm, assuming a uniform distribution. This work also considers the sensitivity of this oxic corrosion allowance to various hypothetical design changes to the repository that may occur before or during construction.     

金川龙首矿中深孔破坏规律及护孔措施

金川龙首矿西二采区拟采用无底柱分段崩落法代替胶结充填法开采低品位矿石,从而寻求降低采矿成本的新途径.该矿地质条件复杂,中深孔能否成孔以及是否具有较好的保持率,是无底柱分段崩落法能否顺利实施的关键.采用不连续变形分析方法对西二采区地质条件下的中深孔破坏形式及规律进行了分析,得出中深孔最易发生破坏的部位主要集中在巷道周边破...     

大岗山水电站坝基岩体表层低波速带成因分析

采用声波测试方法对大岗山水电站坝基岩体开挖完成后的岩体质量进行评价。因坝基岩体受开挖爆破、卸荷松弛及地质构造缺陷等因素的影响,岩体表层会出现不同深度的低波速带。通过对其表层低波速深度与爆破松弛深度以及表层低波速带深度等值线与地质构造的对比,分析了坝基岩体表层低波速带产生的原因及表层低波速带局部深度异常原因。     

印度尼西亚Cipancuh大坝的老化管理

Cipancuh大坝是印度尼西亚最古老的水坝之一,位于印度尼西亚西爪哇省南安由地区的Cipancuh河上。作为一座老坝,大坝（包括土坝和附属建筑物）承受着由于气候条件导致的恶化。另一个需要注意的重要事项是,流域条件的变化引起了水流特性的极端变化。基于沉积率的计算,预测大坝服役年限仍有81年,因此必须对大坝加以维护。大坝下游有一小城镇,人口约20万,若大坝管理不当,下游人民的生命财产安全将受到严重威胁。根据这项研究,Cipancuh大坝被评定为高风险大坝。大坝的维护包括：维修坝体、维修配套建筑物、加大溢洪道泄洪能力、安装新的监测仪器以及使用现有技术加强监测等。总之,有必要改善大坝性能以提高大坝的安全性。