浅析水利工程实施方案的灰色优选

由于灰色系统考虑了系统内部因素相互关系不完全清楚性,因而应用灰色局势决策法选择水利工程实施方案．更具有客观性、科学性。以某水利工程为实例,介绍了用灰色局势决策法对实施方案进行优选的原理和方法,通过实例证明：灰色局势决策法具有较好的实用性,且操作简便。     

沧州地区地热资源开发利用探讨

沧州地区地热资源丰富,开采利用地热资源在该区的经济建设中占据着重要地位。介绍了该地区热储层概况及地热异常区划分、地热资源开发现状、地热井分布利用情况、存在的问题及发展前景。并在此基础上对利用地热资源的情况进行了探讨,提出遵循开发与保护并重的原则,制定科学的地热开发资源规划方案,优化地热井布局,并以市场为导向,大力发展供暖、洗浴、游泳、特色养殖、等区域地热资源合理开发的一些设想与建议。     

河南省濮阳市地下水资源开发存在问题及对策

濮阳市是河南省严重缺水城市之一。目前濮阳市地下水资源开发引发的主要是环境地质问题。本文从水资源、地质环境和社会经济特点出发,提出实现水资源和社会经济可持续发展的对策。     

甘肃省黑河干流中游地区泉水动态特征及预报

在简述区域水文地质条件的基础上,依据1986～2007年泉水流量系列观测资料,详细论述了区内下降泉、上升泉的年内和多年动态变化特征,对比分析了1967年、1984年、2006年测区各泉域泉水量和泉水总量的时空分布规律和变化特征。利用已有的潜水二维流水量数学模型,推递并建立了利用泉点周围节点水头(水位)预报泉水流量的数学模型,并对测区泉水总量未来15年的变化趋势进行了预报。结果表明,在现状节水灌溉条件下,由于出山径流量的增加和地下水开采量的减少,未来黑河干流中游地区的泉水资源基本处于稳定状态。     

武山温泉地热资源状况及开发利用前景分析

武山温泉热流体主要赋存于F1、F2断裂交汇部位的碎裂状斑状花岗岩体中,热水水温56.2℃,富含锂、锶、氟、偏硅酸等多种微量元素,主要用于浴疗治病和保健。本文通过对温泉地热资源形成的地质背景分析,初步论证了地热田的热储和控热构造,评价了地热资源储量,并对温泉开发利用前景作了分析。     

Holocene beach deposits for assessing coastal uplift of the northeastern Boso Peninsula, Pacific coast of Japan

This paper presents a case study that assessed spatial variations in the tectonic uplift rates of beach deposits in the relict Kujukuri strand plain, situated on the northeastern coast of the Boso Peninsula, eastern Japan. The southern Boso Peninsula is tilted downward to the northeast due to plate subduction along the Sagami Trough. However, the cause of the northeastern coast uplift creating the relict strand plain is unclear, due to the absence of a Holocene raised marine terrace sequence. Elevations and ages of beach deposits were collected from drilled cores and ground-penetrating radar profiles along three shore-normal sections in the southern Kujukuri strand plain. From this, alongshore variations in the relative sea level since the mid-Holocene could be seen. These corresponded to north-to-northeast downward tilting at a rate of 0.4 m/ka for an interval 10 km and are concordant with the longer term tilting of the last interglacial marine terrace surrounding the plain. Although it is difficult to assess shore-normal variations of uplift based on the present dataset, the recognized tilting apparently continues to the tilting of the southern Boso Peninsula, implying the Sagami Trough probably affects the uplift of the Kujukuri coast.     

Eustatic and tectonic controls on Quaternary Ras Leona marine terraces (Strait of Gibraltar, northern Morocco)

Well-preserved Quaternary staircased marine terraces appear on Ras Leona limestone relief. This is a peculiar sector of the Betic-Rif Cordillera, lying in the four-way junction between the Atlantic and the Mediterranean, and Europe and Africa. The age and altitude correlation of the Ras Leona terraces with travertine-covered lateral equivalent terraces fashioned in the neighbouring Beni Younech area, and comparison with those along the Moroccan Atlantic coasts, would suggest that the Ras Leona terraces were mainly formed by eustatic factors. The importance of the eustasy is supported by further comparisons with Spanish and Moroccan Mediterranean terraces and with different marine terraces developed on passive-margin coasts around the world. A tectonic event occurred mainly during the period between the formation of the Maarifian and the Ouljian terraces (i.e., between 370 and 150 ka). The moderate Quaternary tectonic uplift deduced from the marine terraces and its comparison with uplifted marine terraces developed in active subduction setting disagrees with the model of an active eastwards subduction below the Gibraltar tectonic arc.     

影响国际矿产资源开发的主要因素

影响中国企业开发国际矿产资源的主要因素包括项目所在国资源/储量标准、法律法规、许可获得、地方关系等。国际矿产资源开发项目所在国的社会制度和文化等与中国有很大的差异,决定了这些因素也与中国有很大的不同之处,研究和熟悉这些因素,有利于中国企业成功开发海外矿产资源。本文通过对这些因素的分析,提出国际资源开发中需要注意的一些事项和建议。     

高密度电阻率成像法在水文地质领域中的应用

高密度电阻率成像法(ERT)作为一种高效、准确的地球物理探测手段,在水文地质领域得到了广泛的应用。本文通过文献追踪和分析,重点讨论了电阻率与含水率、渗透系数、含盐量等水文地质表征参数之间的相关性,并就该方法在地下水资源勘查、溶质运移动态监测以及水文地质参数反演等方面的应用进行了剖析,阐述了ERT探测过程中的主要影响因素及各因素之间的相互关系。最后,针对ERT方法在应用过程中存在的问题提出相应的改进建议。     

鄂西磷矿矿集区地质及其资源远景分析

鄂西磷矿的分布与产状受神农架背斜和黄陵背斜控制,为荆襄式晚震旦世沉积型磷块岩矿床。受浅海台地台坪亚相,磷块岩、泥(页)岩、白云岩含磷建造和水下隆起古构造等控制。晚震旦世陡山沱期磷矿评价标志为:上震旦统陡山沱阶;浅海台地台坪亚相;磷块岩、泥(页)岩、白云岩含磷建造;成矿地段陡山沱阶厚度一般小于200m,最佳150～50m;水下隆起带;磷块岩矿床一般分布在冰碛砾岩为0m的区域;含磷建造等深线一般小于1000m。评价结果表明,荆襄、宜昌、新华、神农架和保康磷矿区的深部及外围具有较好的资源远景,资源潜力大。