Large-scale Tazhong Ordovician Reef-flat Oil-Gas Field in the Tarim Basin of China

The Tazhong reef-flat oil-gas field is the first large-scale Ordovician organic reef type oil-gas field found in China. Its organic reefs were developed in the early Late Ordovician Lianglitag Formation, and are the first large reefs of the coral-stromatoporoid hermatypic community found in China. The organic reefs and platform-margin grain banks constitute a reef-flat complex, mainly consisting of biolithites and grainstones. The biolithites can be classified into the framestone, bafflestone, bindstone etc. The main body of the complex lies around the wells from Tazhong-24 to Tazhong-82, trending northwest, with the thickness from 100 to 300 m, length about 220 km and width 5-10 km. It is a reef-flat lithologic hydrocarbon reservoir, with a very complex hydrocarbon distribution: being a gas condensate reservoir as a whole with local oil reservoirs. The hydrocarbon distribution is controlled by the reef complex, generally located in the upper 100-200 m part of the complex, and largely in a banded shape along the complex. On the profile, the reservoir shows a stratified feature, with an altitude difference of almost 2200 m from southeast to northwest. The petroleum accumulation is controlled by karst reservoir beds and the northeast strike-slip fault belt. The total geologic reserves had reached 297.667 Mt by 2007.     

土壤温度和湿度对冬小麦田土壤空气 CO2浓度的影响

通过同步观测耕层土壤空气CO2浓度廓线、土壤温度和土壤含水量,主要研究和讨论了华东地区典型稻麦轮作农田旱地阶段的土壤空气CO2浓度的变化规律,及土壤温度和含水量对它的影响.结果表明:麦田土壤空气CO2浓度与植物生长密切相关.土壤空气CO2浓度受土壤温度的影响较为显著,且深层的相关性要明显大于浅层.观测阶段的麦田土壤含水量介于30%和44%之间,与土壤空气CO2浓度有较好的相关性(相关性R2=0.61,统计显著性p＜0.001).土壤空气CO2浓度与土壤含水量呈正相关性的原因可能是:高土壤含水量导致的低充气孔隙度降低了土壤空气CO2扩散速率,从而导致土壤空气CO2聚积,浓度升高.在0～30 cm土层中,上层土壤气体中的CO2向上垂直扩散要比下层土壤快.土壤温度对土壤空气CO2浓度的影响大于土壤含水量.     

共有建筑面积分摊的城市综合体功能区划分方法

功能区划分直接影响分摊结果,进而影响房产面积的真实性和可靠性。建筑空间或综合体的结构、服务功能、使用对象交织错落,增加了功能区划分的复杂性。本文对一个城市综合体进行了案例分析,提出了共有面积中功能区服务范围为主、用途为辅的划分方法。     

利用重力异常反演马里亚纳海沟海底地形

针对利用船舶测量海底地形效率低和成本高的缺点,选取西太平洋板块俯冲菲律宾板块而形成的马里亚纳海沟所在海域作为实验区域,依据重力地质方法（GGM）,利用重力异常数据反演海底地形。采用移去恢复技术确定了重力地质法模型的密度差异常数为2.32 g/cm³。分析比较了GGM海深模型、ETOPO1模型和直接将船测点海深数据格网化（模型1）3种海深模型之间的差异,并依据反演结果对"挑战者深渊"两侧地貌进行了研究。结果表明：GGM模型反演海底地形的结果优于ETOPO1模型,更优于将船测点海深数据直接格网化的结果;模型相对误差与海深的关系不大,受海底地形变化影响明显;在船测数据匮乏或者过于稀疏的海域,模型间海深差值结果较大;"挑战者深渊"海沟两侧的地貌有明显差异,在海沟南侧水深小于5 000 m的浅海部分,坡度平缓（2°~5°）,而在水深大于5 000 m的部分,坡度明显增大（10°~15°）;海沟北侧在整个下降阶段坡度很大（10°~15°）,11°45'N附近出现一个缓冲地带。     

夏帝发七年“泰山震”的解读

概述了对今本《竹书纪年》夏帝发"七年,陟。泰山震"这条记载的各种见解和涉及的今本《竹书纪年》的争鸣等;分析了这条史料的关键字"陟"、"震"在古文中的字义和在《竹书纪年》中的特定含义,结合夏商周断代工程研究成果等,认为对夏帝发"七年,陟。泰山震"的确切解读是:夏帝发于在位的第七年(约公元前1652年)崩亡;这一年泰山发生地震或受到地震的影响,地震发生的时间比此前推算的公元前1831年推后了179年,但无法确定这次地震的震中位置和震级。     

公元462年8月17日“兖州地震”震中的校订

对公元462年8月17日(南朝宋孝武帝大明六年七月甲申)兖州地震"地裂泉涌"等史料的可靠性进行分析,重点考证这次地震时"兖州"、"鲁郡"的治所,认为:(1)当时兖州的州治在湖陆,即今山东微山县昭阳湖内,不是以前认为的瑕丘(今兖州东北)或鄄城(今鄄城东);(2)鲁郡的郡治在驺县(今邹城峄山南故邾城),不是以前认为的鲁县(今曲阜)。在此基础上,利用确定历史地震基本参数的方法,结合地震破坏情况和余震活动等,校订了这次地震的震中位置(35.0°N、117.0°E,参考地名为山东省微山滕州交界一带,定位精度为3类)。     

Transmutation of ancient settlements and environmental changes between 6000-2000 aBP in the Chaohu Lake Basin,East China

Based on the temporal-spatial distribution features of ancient settlement sites from the middle and Iate Neolithic Age to the Han dynasty in the Chaohu Lake Basin of Anhui Province,East China.using the methods of GIS combined with the reconstructed paleoenvironment by the records of lake sediment since Holocene,the transmutation of ancient sottlements with response to environmental changes in this area has been discussed.Studies show that the main feature of transmutation of ancient settlements from the middle and Iate Neolithic Age to the Han Dynasty was that the distribution of settlements In this area changed from high altitudes to Iow ones and kept approaching the Chaohu Lake with the passage of time.These could be the response to the climate change from warm-moist to a relatively warm-dry condition during the middle Holocene.leading to the lake level fluctuations.The large area of exposed land provided enough space for human activities.These indicate that the above changes in geomorphologic evolution and hydrology influenced by climate cenditions affected the transmutation of ancient settlements greatly.The distribution pattern of settlement sites was that the number of sites in the west was more than in the east.This pattern may be related to the geomorphologic conditions such as frequent channel shifting of the Yangtze River as well as flood disasters during the Holocene optimum.Therefore,climate change was the inducement of the transmutation of ancient settlements in the Chaohu Lake Basin,which exerted great influence on the distribution,expansion and development of the ancient settlements.     

华北北部地区现今应力场时空变化特征研究.

依据2002——2006年的中小地震资料,利用格点尝试法分析计算了华北北部4个应力小区的平均主应力轴,讨论了华北北部地区的现今应力场特征.在此基础上,对1977——1998年研究区内的单个地震震源机制解进行了进一步的分析计算,并结合以往的研究结果,研究了华北北部地区现今应力场随时间的变化特征,结果印证了唐山地震前后,唐山震源区及其邻近地区应力场主应力方向出现的转动和变化的现象:1976年唐山发生7.8级地震后,唐山震源区及其邻近的北京地区和邢台地区震源机制解的平均P轴可能顺时针转动了约15deg;——30deg;。北京地区和邢台地区近期（2002——2006年）的平均主应力轴与唐山地震前的综合断层面解较为一致,这两个地区应力场似乎转回到唐山地震前的状态. 而唐山区震源机制解的平均P轴在地震后则一直稳定在EW向上。位于张家口——渤海断裂带西段的京西北地区,其现今应力场则相对比较稳定,唐山地震前后主应力方向没有太大变动。鉴于数据资料等方面的原因,本文的研究结果仅仅是初步给出了华北北部地区应力场近几十年来一种可能的调整变化图象。      

全液压坑道钻机故障预测与诊断的现代化技术探讨

针对煤炭企业广泛使用的全液压坑道钻机现场运行状况,剖析了全液压坑道钻机的故障机理和特点,研究用现代科学技术对全液压坑道钻机故障进行预测与诊断的技术方法,探讨了各种最新技术方法的可行性与适用性,并指出了今后的发展方向。      

长白山地区近代火山岩的ESR测年研究

在对火山灾害和潜在危险性评价中火山活动的时代起着极其重要的作用,但是,目前还没有成熟的测年方法能够对年轻火山岩直接定年。本文采用电子自旋共振（ESR）测年方法对年轻火山岩直接测年进行了尝试。所测年轻火山岩石英矿物中没有E信号,有较弱的Ge中心信号,根据Ge中心信号获得了长白山三期近代火山岩的年龄,其中,气象站碱性流纹岩的ESR年龄约3930 a BP,而气象站碱性流纹岩之下粗面岩的ESR年龄约为17500～20900 a BP。