Mathematical Model of the Geothermal Water Resources in the South Hot Spring System in Chongqing

The geothermal waters of south hot spring, small hot spring and Qiaokouba in Chongqing, are all part of the south hot spring geothermal water system. Exploitation has caused a decline in the water levels of the south and small hot springs, which have not flowed naturally for 15 years. Now, bores pump geothermal water to the springs. If the water level drops below the elevation of the rivers, river-water will replenish the geothermal water, destroying this resource. It is therefore an urgent task to model the geothermal water system, to enable sustainable development and continued use of the geothermal water in Qiaokouba. A numerical simulation of the geothermal water system was adopted and a quantitative study on the planning scheme was carried out. A mathematical model was set up to simulate the whole geothermal water system, based on data from the research sites. The model determined the maximum sustainable water yield in Qiaokouba and the two hot springs, and the south hot spring and small hot spring sustainable yields are 1 100 m^3/d and 700 m^3/d from 2006 to 2010, 1 300 m^3/d and 1 000 m^3/d from 2011 to 2015, and 1 500 m^3/d and 1 200 m^3/d from 2016 to 2036. The maximum exploitable yield is 3 300 m^3/d from 2006 to 2036 in Qiaokouba. The model supplies a basis to adequately exploit and effectively protect the geothermal water resources, and to continue to develop the geothermal water as a tourist attraction in Chongqing.

Comprehensive Assessment of Regional Circular Economy Development Based on Efficiency of Resource & Environment: A Case Study of Jiangsu Province

In the first, the paper gave a retrospective analysis on the comprehensive assessment of circular economic development. According to the requirement of improving resource & environment efficiency, the paper designed an analytical framework for a comprehensive assessment of regional circular economic growth, which consists of the goal, object and technical line of the comprehensive assessment of regional circular economic development. Given that, the paper discussed the criterion for choosing the assessment index, the approaches of index's weighing determination, the means of data standardization, and the reference system of assessment index value and so on. According to the framework of regional circular economic development evaluation, die paper made a comprehensive evaluation of Jiangsu Province's circular economic development. The result shows that from temporal change, Jiangsu Province's circular economic development had different stages; from the spatial comparison, there is variance among different regions, which could be divided into different types according to the spatial variance and the relation between the development of circular economy and the aggregative index number. There was a remarkable correlation between circular economic development level and GDP or the 2nd industry GDP.Finally, the paper gives some suggestions on how to promote the development of circular economy in Jiangsu Province.

Assessment of global solar resource development

With the increasing severity of environmental problems,many countries have set energy transition targets to promote the realization of the Paris Agreement.There has been a global consensus on utilizing solar energy resources as alternatives to conventional sources to support this energy transition.In this regard,analyzing the“location,”“quantity,”and“quality”of global solar energy resources will not only assist an individual country to efficiently utilize these resources but also promote the realization of large-scale intercontinental resource utilization and complementation.This study established the basic database,model methods,and platform tools for global solar energy assessment,Then,a global solar energy resource assessment was conducted,which included the theoretical reserves(TRs),technical installed potential capacity(TPIC),and average development cost(ADC).A comparative analysis of the assessment results for all continents was also performed.After that,based on big data analysis and geographic information system(GIS)calculations,the distribution characteristics of the global solar power TPIC were calculated with the two core indicators,namely the capacity factor and ADC.Furthermore,a data-driven quantitative evaluation of the refined development potential of solar energy resources was performed.Finally,the reasonableness and coincidence analysis of the resource assessment results were verified using data from global and specifically Chinese photovoltaic(PV)bases.

Geothermal Resources Potential Analyses of Tanggu Urban Area and the Vicinity,Tianjin

In order to construct a newly developed green area, the Tanggu urban area as the core part of Binhai new area,needs more and more clean energy year by year. This area is abound in geothermal resources endowed by the grand Nature.Based on the estimation of

Tourism resource assessment and spatial analysis of wine tourism development： a case study of the eastern foothills of China＇s Helan Mountains

The reasonable development and utilization of mountainous regions closely relates to local economic development and ecological security. The wine production region in the eastern foothills of the Helan Mountains in Ningxia, Ningxia Hui Autonomous Region, with its excellent terroir, is emerging as one of China's three major geographical attractions. Based on surveys of tourism resources and spatial analysis for this wine producing region, we propose a highly representative and practicable path for wine tourism development. Based on China's national standard in Classification, Investigation and Evaluation of Tourism Resources(GB/T 18972-2003), which recommended the types and grades of tourism resources in one area, we conduct an analysis of resource characteristics and the current state of development. Using Arc GIS software, spatialautocorrelation analysis, average nearest neighbor analysis, as well as clustering and outlier analysis, we are able to derive the spatial distribution characteristics of tourism resources. Our survey showed that tourism resources in this area are relatively abundant and have good quality and clear combination advantages. Nonetheless, there are resources shortage for wine tourism and poor integration of wine production with the tourism industry. Regarding the spatial distribution of resources, we revealed the current states of and issues surrounding regions with concentrated resources, as well as characteristics of this clustering. Finally, we proposed a development path for wine tourism in this region based on the five dimensions of management mode, industrial path, product development, spatial optimization, and market development.

晋升激励、资源错配与经济高质量发展——基于新旧考核模式差异化视角

基于“晋升锦标赛”治理模式的特征事实,使用2003—2016年287个地级及以上城市面板数据,实证考察新旧考核模式下晋升激励对经济高质量发展的差异化影响。结果表明:(1)传统考核观下晋升激励显著阻碍了经济高质量发展,资源错配是晋升激励阻碍经济高质量发展的重要原因。(2)在资源丰富程度较低、政府财政透明度较低、年轻官员主政的城市以及直辖市中,晋升激励对经济高质量发展的负面影响更大;晋升激励对政绩存在“可视性偏差”。(3)新型考核观下晋升激励缓解了资源错配问题,促进了城市经济高质量发展,具有差异化空间溢出的特点。

近三十年天津市地热大规模开发热储动态特征研究

天津是我国较早大规模开发深层地热的地区之一,经过30多年的持续开采回灌,对深部热储特征有无影响,是否引起了资源枯竭、水质恶化以及热储温度下降等环境问题,一直是社会关注的焦点。本文系统收集了1992年以来天津市地热开发过程中的不同热储层热水开发利用量、回灌量、水位、水质、水温等近30年的时间序列监测资料,通过垂向及横向对比,对地热持续开发30年来天津市不同地区不同热储层的热水动态特征进行了分析。结果表明,天津市各热储层地热流体的主要化学组分基本稳定,多年来无明显变化,地热采灌系统尾水回灌不会从根本上改变地热流体的原始化学特征,但深大断裂作为热流通道引起的顶托补给,会对上层热储水质造成一定的影响;随着近年来天津市回灌工作力度不断加大,大部分热储水位下降幅度减缓或出现回升,热储的温度没有明显的升高或降低的趋势,但回灌井热储段经过非供暖期的恢复无法达到最初的温度,呈逐年下降趋势。未来持续采灌条件下,回灌井筒的“冷堆积”及采灌井的优化调配应是重点关注的问题。

松辽盆地北部地热资源分布特征及开发对策

松辽盆地是中国陆上面积最大、地温梯度最高的热盆,蕴藏丰富的地热资源。针对地热资源规模及有利区不落实,地热开发利用起步晚,相关核心关键技术、工程配套等不成熟,难以指导地热资源效益开发等问题,从地温梯度、岩石热导率及大地热流研究入手,重点剖析了松辽盆地北部地热资源赋存特征,依据其分布特征,探讨地热资源开发对策,建立配套开发和综合利用技术。结果表明:松辽盆地北部具有高温热盆特点;地热资源主要为水热型和岩热型2类,中浅层水热型砂岩地热水北好南差,滨北林甸、黑鱼泡等地水层厚度高达200 m,孔隙度普遍大于20%,是最有利的地热水发育区;深层岩热型地热资源厚度大、温度高,资源规模大,是油区生产用能替代的主要资源;分类型建设地热开发试验区,攻关地热开发技术瓶颈,加大对地热供暖项目的政策支持,促进地热技术研发,为地热能效益开发提供保障。研究成果为松辽盆地北部地热资源先导试验区优选及开发方案设计提供了理论依据。

石油企业有效开发利用地热资源的问题与建议

在全球碳减排和能源结构转型趋势下,地热产业迎来重要发展机遇。由于地热产业与油气工业的相近性,石油企业在地热资源开发利用中具备独特优势。近年来各大石油企业地热业务取得长足进展,但也面临诸多挑战,其中,资源品质及开发利用方式选择是制约地热项目经济性的关键问题。文章从地热资源的形成与分布机理入手,分析提出:可进行有效开发利用的地热资源并非无处不在,要提升成功率与经济性,首先应在明确地热系统成因机制的基础上,落实优质资源,消除开发目标选取的盲目性;在此基础上,应针对不同类型、不同构造背景及不同丰度的地热资源,依据其富集条件与资源特征,因地制宜地选择勘探开发模式与利用方式,才能有效实现地热产业的规模化和效益化发展。其中,渤海湾盆地仍需厘清深部断裂及其他构造要素的控热特征,取得具有持续发电潜力的资源条件,从而实现地热利用场景的突破;除深井换热及热储改造等复杂新兴采热方式外,松辽盆地与四川盆地建议可在盆地周缘构造活跃区进行地热资源勘探开发,或将盆地内部可沟通深部流体或改善储层物性的断裂发育区作为潜在目标。同时,增强型地热系统、井下换热等技术路线仍需进一步评价优化,以明确其有效适用条件。

基于环境承载力的中深层地热资源评估方法

中深层地热资源在我国分布广泛、资源禀赋良好、储量大。目前地热资源评价方法主要用于评价浅层地热能,并且未考虑环境承载力、开采经济性等因素,难以用于指导中深层地热资源的开发。从多角度量化中深层地热资源开发潜力,将资源环境承载力评价体系应用于中深层地热资源评价。本体系集合地热资源禀赋、环境影响、社会经济技术条件三类因素,综合考虑了热储埋深、温度等因素,并结合层次分析法及统计学方法明确了分级指标和权重赋分。基于提出的中深层地热资源评价体系对典型区域的中深层地热资源进行潜力和远景评估,可为中深层地热资源开发提供理论指导。

矿产资源开发中的环境风险评估与管理策略研究

矿产资源是全球经济发展的基础,广泛应用于能源、制造业和建筑业等多个领域。随着工业化进程的加速,矿产资源的需求持续增长,相应的开采活动也随之增加。然而,矿产资源的开发往往伴随着严重的环境问题,如土壤侵蚀、水源污染、生态系统破坏以及空气污染等,不仅影响当地生态环境,还对人类健康和社会稳定造成威胁。因此,对矿产资源开发过程中的环境风险进行科学评估和有效管理显得尤为重要。本文主要分析矿产资源开发中的环境风险评估与管理策略。

雄安新区浅层地热能资源潜力及经济环境效益评价

根据雄安新区雄东片区浅层地热能的地温场和热物性等赋存条件,估算了雄东片区浅层地热能静态储量和资源潜力,评价了开发利用的经济环境效益。经计算,雄东片区150 m以浅浅层地热能热容量为4.7×10^(12)kJ/℃,静态储量为23.4×10^(12)kJ,制冷工况下资源潜力为43.3万m^(2)/km^(2),供暖工况下资源潜力为85.9万m^(2)/km^(2)从经济效益角度评价,当浅层地热能开发利用率为25%时,雄东片区全年大约可节约6077吨标准煤,全年大约可节约费用2006万元,可减排二氧化碳14501吨、减排二氧化硫103吨、减排粉尘49吨。

上海地热资源利用现状及发展策略探讨

本文深入分析了上海地热资源勘查、开发利用现状及面临的问题,结合“碳达峰、碳中和”目标、机遇与挑战,对上海市地热资源可持续开发利用发展策略展开探讨。提出了“十五五”规划期间,上海地热资源开发利用的重点任务,即深化地热资源勘查和监测、关键技术强化、全流程标准体系构建、智能化信息服务体系建立、多元化发展模式探索、示范应用推进、管理体系完善、学科建设和人才培养。建议未来工作聚焦强化扶持政策导向、提升政府统领功能、加大关键技术产学研投入、推广代表性应用示范等方面,推动城市向绿色低碳发展转型。

地热资源勘查中水文地质调查的运用

随着社会经济的迅速发展和城镇化的有序推进,我国水文地质调查技术水平持续提升。水文地质调查是地热资源研究的重要组成部分,是有效开发利用地热资源的方向标,是地热资源开发科学性和效率性的基础保障。水文地质调查就是通过专业技术手段对勘查区进行勘测,得到地质、地貌和水文等数据信息,进而有效分析勘查区水文地质环境。水文地质调查是一种模式化、科学化和标准化的方法,有助于实现地热资源的开发利用与水文地质环境的可持续发展。因此,结合地热资源勘查中水文地质调查的实际案例,对勘查区调查数据进行评价,以期更好地将水文地质调查应用于地热资源勘查中,提高地热资源勘查技术水平。

地热资源勘探开发技术与发展方向

在我国社会经济发展水平不断提高的背景下,越来越多人认识到化石燃料过度使用的弊端。因此,社会各行各业开始关注地热资源的勘探开发与利用。为了提高我国地热资源勘探开发水平,要做好相应的生态环境保护措施,促进我国地热资源勘探开发与应用市场的生态化发展。首先,分析地热资源的分布特征,不仅具有可再生特点,还具有节能效果好、利用效率高、采购价格低廉等优势。其次,结合地热资源勘探开发现状及存在问题,介绍该类能源开发的技术,并提出未来地热资源勘探开发发展方向。

德州市地热资源开发利用与管理探讨

地热能作为一种清洁低碳、安全稳定、开发技术先进、运行管理科学的非碳基能源,是实现碳达峰、碳中和目标不可或缺的能源。德州市是山东省地热资源富集区之一,目前已查明全市地热资源量约500亿m^(3),地热资源总储量3.80×10^(20) J,占全省的21.35%。而地热资源具有水资源和矿产资源的双重属性,是一种特殊的地下水。德州市聚焦矿产资源管理改革,推动矿产资源开发利用高质量发展。依托地热资源优势,秉持“在保护中开发、在开发中保护”发展理念,先行先试、因地制宜开展地热资源保护与开发利用监督管理工作,探索地热资源开发利用新模式、新路径,取得显著成效。

兰考县地热资源地质特征及潜在环境地质问题研究

本文针对兰考县地热资源的地质特征及潜在环境地质问题展开深入研究。通过该地区地热资源的分布特征调查和分析,并从地热地质构造、热流场分布、地下水循环等方面揭示了地热资源的地质特征。分析了地热开发利用可能引发的环境地质问题,当地热能过度开采将造成地面沉降、地热流体水量和温度衰减等,地热尾水处理不当会产生“盐污染”和“热污染”,造成地质灾害频发和生态环境破坏。因此,针对地质环境问题,如何更安全、更合理地开发利用地热资源,显得尤为重要。

废弃矿井煤层气资源调查评估方法与开发利用前景

本文通过对废弃矿井煤层气资源研究和开发利用评价研究,为废弃矿井的煤层气资源提出科学评估方法与前景利用评价。期待该研究可以给有关领域的研究者和相关工作者带来有益的参考与启迪,促进废弃矿井煤层气资源的研究和开发利用。

关中西部中深层地热资源赋存特征及开发建议

为促进关中西部城区地热资源开发利用,通过分析地热资源分布及热储类型,结合地热地质条件提出开发建议。分析认为,关中西部热储类型主要包括孔隙型层状热储、岩溶型层状热储和裂隙型带状热储3种类型;扶风县赋存岩溶型层状热储,地热地质条件好,适合进行水热型地热资源开发利用;渭滨区、眉县赋存有孔隙型层状热储和裂隙型带状热储,地热地质条件较好,适合进行水热型地热资源开发利用;岐山县、金台区、陈仓区、凤翔区赋存孔隙型层状热储,地热地质条件中等,可根据地热地质条件选用水热型与换热型的地热资源开发利用;陇县、千阳县赋存孔隙型层状热储,但地热资源较差,适合开展换热型的地热资源开发利用。