基于完全竞争市场模式的中国页岩气资源管理体制分析与思考     

吴勘  杨树旺 《地质与资源》2016,25(3):291-297

页岩气是化石能源中相对清洁高效的一种天然气.美国的页岩气革命可以算是本世纪最具影响力的能源革命,使其实现了梦寐以求的“能源独立”.从美国的经验来看,页岩气革命可以认为是开放市场和解放思想的成果,是完全竞争市场模式理论在页岩气资源开发中的成功实践.中国页岩气技术可采储量为世界第一,但由于中国页岩气管理体制等原因的制约,目前中国只在个别区块取得了勘探突破,离页岩气的大规模商业开采还有比较长的路.通过对页岩气资源管理体制深入分析,总结和讨论传统油气管理体制的不足以及美国页岩气开发给我国页岩气资源开发的启示,运用西方经济学经典的完全竞争市场模式理论对页岩气资源管理体制改革及相关政策提出适当建议.  相似文献   

福建重大地质灾害特征及其影响因素          下载免费PDF全文

叶龙珍  柳侃  黄国平  郑敏洲 《中国地质灾害与防治学报》2015,26(1):98-102

通过福建省重大灾难性地质灾害的历史资料归整、野外核查分析,总结灾害特征及影响作用因素,简要剖析成灾机理,以期为福建地质灾害防治提供指导。福建重大地质灾害特征包括时空分布集中、规模小危害重、滑坡泥石流灾害链形式及快速冲击效应等。其主要影响因素包括人类活动改造的局部汇水横纵坡形等微地貌、岩浆岩浅表层松散孔隙岩土体及罕见强降雨,表现为持续强降雨及地表水入渗软弱岩土体结构面,形成高孔隙水压及渗流动水压力形成滑坡泥石流灾害。  相似文献   

Model Establishment for Ponding in Coal Mining Subsidence Areas and its Prediction: Case Study of Northern Jining,China     

Fanxuan Zeng  Kan Wu  Qiang He  Xinpeng Diao  Liang Li 《Geotechnical and Geological Engineering》2017,35(1):83-89

Mining in areas with a high phreatic water surface leads to groundwater exposure and the accumulation of the water in the subsidence basin. The calculation of the volume of water is of high importance. This paper analyzes the seasonal or perennial ponding caused by mining in areas with high phreatic water surfaces. With the help of digital elevation model, the estimated groundwater elevation, and the basis of a mining subsidence prediction model, a model of ponding in subsidence areas has been established. Using this model, the amount of mining subsidence ponding in northern Jining has been calculated. Furthermore, the evolution of ponding has been forecasted. Our experimental results indicate that the average depth of the ponding area is projected to be about 3 m after mine closure. The volume of the new perennial ponding is 0.2–2 million m³ per year and it is negligible to the river confluence in Jining. This model helps in the calculation of the amount of water in the subsidence area and the evaluation of the impact of mining subsidence area on the catchment, which would provide a certain basis for the reclamation and protection of water resources in the locality.  相似文献   

海底声散射特性研究进展   总被引：2，自引：0，他引：2  

刘保华  阚光明  裴彦良  杨志国  于凯本  于盛齐 《海洋学报》2017,39(7):1-11

海底是水下声场的重要边界,其声散射特性对水下声场空间结构及分布规律具有至关重要的影响。对目前国际上海底声散射特性研究方面的进展进行了系统的分析和总结,从海底声散射测量技术、海底声散射特性及机理、海底声散射预测模型3个方面进行了论述,并提出了未来研究的方向、研究重点与难点。该工作对于充分了解和认识海底声散射研究的目前现状和未来发展趋势具有很好的借鉴和指导意义。  相似文献   

西藏班公湖—怒江成矿带南侧矽卡岩型铜多金属矿床S、Pb同位素组成及成矿物质来源   总被引：1，自引：0，他引：1  

伍登浩  高顺宝  郑有业  田坎  张永超  姜军胜  余泽章  黄鹏程 《吉林大学学报(地球科学版)》2018,48(1):70-86

班公湖—怒江成矿带南侧分布着多个与班公湖—怒江洋南向俯冲、碰撞、后碰撞伸展各阶段有关的矽卡岩型铜多金属矿床,目前对单个矿床的研究较多,而对形成于不同环境下的矿床之间的对比研究较少。本文通过对该成矿带南侧典型矽卡岩型铜多金属矿床的S、Pb同位素特征进行较为系统的总结,并结合前人对辉钼矿Re同位素、成矿岩体地球化学特征、成岩成矿时代及区域构造演化等研究的成果,对不同构造背景下所形成的4个矿床的成矿物质来源进行对比研究。研究表明：舍索矿床的S同位素具有明显的双峰式分布,为壳幔混合来源,而区内典型矿床的S同位素显示从班公湖—怒江洋南向俯冲（舍索）→碰撞（嘎拉勒、尕尔穷）→后碰撞（班戈日阿）逐渐富集重硫的特征;Pb同位素显示舍索较其他矿床更富集放射成因Pb,舍索、班戈日阿矿床成矿物质主要来源于念青唐古拉群结晶基底,而同碰撞期形成的嘎拉勒、尕尔穷矿床则显示了明显的壳幔混合来源的特征,念青唐古拉群结晶基底对尕尔穷矿床的成矿物质有少量贡献。此外,斑岩-矽卡岩复合型矿床的成矿物质来源具有壳幔混源的特征,而单一的矽卡岩型矿床以上地壳来源为主。  相似文献   

伊犁地区旅游资源开发构想   总被引：6，自引：3，他引：3  

阎顺  张春明  许英勤  阚耀平 《干旱区地理》2000,23(1):1-6

伊犁地区列入旅游资源的景点１３４个,其中一、二级景点共３８个。生物景观类和古迹与建筑类在一、二组景点中所占比生最大。以资源为基顾,以现有及预测客源市场为导向,拟议分期开发果子沟－－赛里木湖高山湖泊、森林、草原区,那拉提草原区,霍尔果斯口岩观光、购物区,唐布拉温泉疗养、草原度假区等八个旅游区。  相似文献   

Review of Chinese atmospheric science research over the past 70 years: Atmospheric physics and atmospheric environment     

Wang  Tijian  Gao  Taichang  Zhang  Hongsheng  Ge  Maofa  Lei  Hengchi  Zhang  Peichang  Zhang  Peng  Lu  Chunsong  Liu  Chao  Zhang  Hua  Zhang  Qiang  Liao  Hong  Kan  Haidong  Feng  Zhaozhong  Zhang  Yijun  Qie  Xiushu  Cai  Xuhui  Li  Mengmeng  Liu  Lei  Tong  Shengrui 《中国科学:地球科学(英文版)》2019,62(12):1903-1945

Since the founding of the People's Republic of China 70 years ago,the subject of atmospheric physics and atmospheric environment has developed rapidly in China,providing important support for the development of atmospheric science and guarantee for the development of national economy.In this paper,the general advancement of atmospheric physics and atmospheric environment in last 70 years was described.The main research progress of atmospheric physics and atmospheric environment in the past 40 years of reform and opening-up was reviewed,the outstanding research achievements since the 21 st century were summarized,the major problems and challenges are pointed out,and the key directions and suggestions for future development are put forward.  相似文献   

钻孔应变台网记录的汶川地震前异常变化   总被引：1，自引：0，他引：1  

邱泽华  唐磊  阚宝祥  宋茉  周龙寿 《国际地震动态》2008,(11)

汶川地震前是否存在观测异常变化?这不仅是地震研究人员关心的问题,更引起了社会的广泛关注.我们的初步分析表明,汶川地震前四分量钻孔应变仪观测到异常变化.需要说明的是,汶川地震震中附近100km范围内没有钻孔应变观测点.  相似文献   

Gerris在海洋大振幅内孤立波数值模拟中的应用     

曾侃  李恒宇 《海洋与湖沼》2019,50(4):799-810

本文运用基于自适应网格的流体动力学开源软件Gerris,来建立基于Boussinesq近似下的二维不可压缩Euler方程组的数值模型,以模拟不同层化条件下稳定状态的完全非线性大振幅内孤立波。文中比较了完全非线性的用Gerris实现的Euler模型与弱非线性的KdV理论模型在刻画大振幅内孤立波结构及特征参数上的差异,说明在模拟大振幅内孤立波时,高阶非线性不应忽略。Euler模型模拟结果表明,完全非线性大振幅内孤立波的等密度面半宽度随深度变化,这使得基于KdV方程解析解、利用卫星SAR(Synthetic Aperture Radar)图像提取内孤立波极值间距来反演内波振幅的可行性存疑,需要重新评估。此外,本文用两组实测数据验证了用Gerris实现的Euler模型模拟大振幅内波的有效性。  相似文献   

Acoustic backscattering measurement from sandy seafloor at 6–24 kHz in the South Yellow Sea     

Guangming Kan  Baohua Liu  Zhiguo Yang  Shengqi Yu  Lehua Qi  Kaiben Yu  Yanliang Pei 《海洋学报(英文版)》2019,(5)

The acoustic bottom backscattering strength was measured at the frequency range of 6–24 kHz on a typical sandy bottom in the South Yellow Sea by using omnidirectional sources and omnidirectional receiving hydrophones. In the experiment, by avoiding disturbances due to scattering off the sea surface and satisfying the far-field condition, we obtained values of acoustic bottom backscattering strength ranging from –41.1 to –24.4 dB within a grazing angle range of 18°–80°. In the effective range of grazing angles, the acoustic scattering strength generally increases with an increase in the grazing angles, but trends of the variation were distinct in different ranges of frequency, which reflect different scattering mechanisms. The frequency dependence of bottom backscattering strength is generally characterized by a positive correlation in the entire frequency range of 6–24 kHz at the grazing angles of 20°, 40° and 60° with the linear regression slopes of 0.222 9 dB/kHz, 0.513 0 dB/kHz and 0.174 6 dB/kHz, respectively. At the largest grazing angle of 80°, the acoustic backscattering strength exhibits no evident frequency dependence.  相似文献