察尔汗盐湖别勒滩区段固态锂的赋存状态与分布特征     

张宇萌  胡宇飞  王笛  刘成林  李瑞琴  王罗海  刘万平  沈立建  焦距 《矿床地质》2023,42(1):77-89

察尔汗盐湖别勒滩区段赋存大量具有开发潜力的固态锂资源,但目前对固态锂的赋存状态和分布特征研究较少。文章利用水溶法、稀酸溶法和全岩溶解法3种方法对该区4个钻孔的15件岩芯样品进行主微量元素分析。研究结果显示,水溶法的w(Li)(Li溶出量,余同)为23.37×10^-6～85.98×10^-6,稀酸溶法的w(Li)为47.77×10^-6～139.58×10^-6,全岩溶解法w(Li)为49.47×10^-6～151.64×10^-6。以同一样品全岩溶解所得的w(Li)为100%,水溶法、稀酸溶法的w(Li)平均值分别为56.44%和92.83%。结合矿物薄片鉴定、扫描电镜分析和X射线衍射的鉴定结果,岩芯样品中的矿物主要是石盐、杂卤石、光卤石、石英、绿泥石、钠长石、硬石膏、白云石、伊利石、菱镁矿和方解石等,推测固态锂大部分赋存于易溶盐类矿物,其余赋存于不易溶的碳酸盐、硫酸盐和硅酸盐等矿物中。根据4个钻孔岩芯样品的Li溶出量来看,察尔汗盐湖别勒滩区段固体钾盐层中固态锂的分...  相似文献   

基于多源数据融合的相山火山盆地三维地质建模   总被引：2，自引：0，他引：2  

何紫兰 《地质与勘探》2018,54(2):404-414

随着三维建模技术的日益发展,单一数据源建模已不能满足建模需求。文中通过对多源数据建模方法的阐述,综合地质、物探、化探、遥感、钻探等多源数据的融合方法进行详细解释。将多源数据按表现形式划分为图件类、文字信息类,并通过一系列数据处理工作将原始数据整合至三维空间数据库。以GoCAD建模软件为平台,详细阐述了地形地貌、钻孔、地层、构造、岩体、矿体等对象的建模实现方法,引入GoCAD软件的半自动化流程建模法建立构造-地层实体模型,并提出两种岩体实体建模方法,实现岩体实体模型的构建,最终构建相山火山盆地三维地质实体模型。  相似文献   

珙县某危险废物填埋场水文地质特征研究     

姜丽丽  尹恒  马宇 《地下水》2018,(6):46-49

本文根据在珙县某危险废物填埋场开展的野外调查工作和试坑入渗试验,结合前人在区内进行的水文地质普查成果,划分了研究区的含水层岩组与地下水类型,阐述了不同类型地下水的补给、径流和排泄等水文地质特征,并结合入渗试验测的渗透系数对包气带防污性能进行了初步评价,结果可知:研究区地下水类型可划分为碎屑岩类孔隙-裂隙水和松散岩类孔隙水两类,主要来源是大气降水补给,地下水动态随降雨变化明显,水量一般较少至中等,红层承压水在静水压力作用下向深部运动,通过机井揭露排泄,水量较丰富;利用双环试坑渗水试验可知,场址区粉质粘土层的渗透系数为0.011～0.013 m/d,渗透性等级为弱透水,防污能力较好。  相似文献   

Slope stability of bioreactor landfills during leachate injection: Effects of geometric configurations of horizontal trench systems     

Rajiv K. Giri 《Geomechanics and Geoengineering》2015,10(2):126-138

In bioreactor landfills, different configurations of closely spaced horizontal trench (HT) systems are often considered as leachate recirculation systems to achieve uniform and rapid distribution of moisture in municipal solid waste (MSW). In this study, a numerical two-phase flow modelling was adopted to study the effects of geometric configuration of HT systems on the moisture distribution in MSW, and the stability of a simplified bioreactor landfill slope during continuous and intermittent leachate recirculation. Transient variations in pore water and capillary pressures in MSW were assessed, and slope stability analyses were performed using strength reduction technique. MSW was considered as heterogeneous and anisotropic with varied unit weight and saturated hydraulic conductivity. The results demonstrated that geometric configurations of HT systems significantly affected the moisture distribution, generation and distribution of pore water and capillary pressures in MSW, and considerably influenced the mechanical stability of bioreactor landfill slope. It was concluded that staggered configuration of closely spaced HT systems with intermittent sequences of leachate recirculation and subsequent gravity drainage in alternate shallow and deep HT layers should be adopted as they produce uniform moisture distribution and ensure the mechanical stability of landfill slope due to low induced pore pressures near side slope. Overall, this study presents a significant contribution to the understanding of the basic mechanisms controlling the geotechnical stability of bioreactor landfills during leachate operations. Furthermore, the capability of the adopted commercial code was verified with complexities related to bioreactors behaviour. However, further research is needed to validate the model based on field monitoring data at actual bioreactor landfills.  相似文献   

GK-15型地质岩心钻探泥浆固控装置研究应用          下载免费PDF全文

张飞  熊虎林  吕方  米合江  王智慧  孙鑫 《探矿工程》2015,42(12):64-68

固相控制装置在石油钻井中应用比较广泛,已实现系列化、标准化和专用化。地质岩心钻探在深度、口径和工艺等方面不同于石油钻井。因此,石油钻井固相控制装置不适合在地质岩心钻探施工中使用。GK-15型地质岩心钻探泥浆固相控制装置是在综合石油钻井固相控制装置特点的基础上,结合地质岩心钻探工艺的需求,把振动筛、清洁器和离心机通过管路联接,构成封闭的泥浆固相控制装置,实现泥浆的制备、循环、固相控制和储备。介绍了GK-15型泥浆固相控制装置结构、性能参数以及取得的使用效果。  相似文献   

月球圈层空间立体网格技术研究     

张宗佩  万刚  曹雪峰  李锋 《测绘科学技术学报》2015,(1):101-105,110

选定月固坐标系为月球圈层空间网格的坐标基础,根据月球结构及其人造月球卫星轨道分布情况划分月球基准圈层面,采用剖分曲线l和b对月球圈层面进行层次细分,实现对圈层面层次细分。然后,结合圈层径等距细分对月球圈层体进行层次细分,实现对圈层体层次细分,建立月球圈层空间立体网格模型。采用Hilbert曲线填充算法,实现对月球圈层网格统一编码,编码效率较高,为网格数据组织奠定基础。  相似文献   

昌乐五图煤田油页岩地质特征及质量分析          下载免费PDF全文

秦祥胜 《山东国土资源》2015,31(4)

五图煤矿油页岩广泛分布于李家崖组的B段、C段和D段,以C段为主体,探明储量2.72亿t,是褐煤的伴生矿种。C段油页岩层密集,厚度大;D段上部含油页岩,但厚度小。油页岩焦油产率最高16.25%,最低5.43%,平均8.36%。基准发热量最高8.72MJ/kg,最低6.16MJ/kg,平均6.91MJ/kg。油页岩作为固态燃料,是汽油的替代能源,五图煤田油页岩资源的开发和利用前景广阔。  相似文献   

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蒋振伟  袁运斌  欧吉坤  杨力 《大地测量与地球动力学》2015,35(2):199-202

?о???????????JPL????????????????????????????GNSS??????λ??????????????????????????????????????????5×10⁸ m???????????????????3×10⁶ m????????????DE421???????????X??????????н?????30′????Y????????X??????????????????????????????λ??????????????????0.3 mm????????????λ?????????????????????3 mm???????????????????1??峱???????????????3 mm???????GPS??????????????????????????????????????PPP??????????????????PPP?в??ü???Ч??????????????  相似文献   

原油裂解过程中固体沥青的拉曼光谱演化特征     

房忱琛  熊永强  李芸  梁前勇  陈媛 《地球化学》2015,(2):196-204

固体沥青是石油天然气的伴生产物,它记录了油气藏演化过程中的重要信息。本文通过原油裂解模拟实验得到不同成熟度条件下的固体沥青,并利用激光拉曼光谱仪对其进行测定。测定结果表明,拉曼光谱中的D峰随着成熟度的增加总体呈现出向低波段移动的趋势,G峰没有明显的变化趋势,已有的拉曼参数(如G峰与D峰的拉曼位移和面积比)也随着成熟度的增加发生了规律性的变化,为实际地质条件下固体沥青的拉曼光谱特征研究提供了科学的实验依据。  相似文献   

The heat flow of Europa     

Javier Ruiz 《Icarus》2005,177(2):438-446

The heat flow from Europa has profound implications for ice shell thickness and structure, as well as for the existence of an internal ocean, which is strongly suggested by magnetic data. The brittle-ductile transition depth and the effective elastic thickness of the lithosphere are here used to perform heat flow estimations for Europa. Results give preferred heat flow values (for a typical geological strain rate of ¹⁰⁻¹⁵ s⁻¹) of 70-110 mW m⁻² for a brittle-ductile transition 2 km deep (the usually accepted upper limit for the brittle-ductile transition depth in the ice shell of Europa), 24-35 mW m⁻² for an effective elastic thickness of 2.9 km supporting a plateau near the Cilix impact crater, and >130 mW m⁻² for effective elastic thicknesses of ?0.4 km proposed for the lithosphere loaded by ridges and domes. These values are clearly higher than those produced by radiogenic heating, thus implying an important role for tidal heating. The ?19-25 km thick ice shell proposed from the analysis of size and depth of impact structures suggests a heat flow of ?30-45 mW m⁻² reaching the ice shell base, which in turn would imply an important contribution to the heat flow from tidal heating within the ice shell. Tidally heated convection in the ice shell could be capable to supply ∼100 mW m⁻² for superplastic flow, and, at the Cilix crater region, ∼35-50 mW m⁻² for dislocation creep, which suggests local variations in the dominant flow mechanism for convection. The very high heat flows maybe related to ridges and domes could be originated by preferential heating at special settings.  相似文献