3Dmove模拟构造裂缝预测技术在川西新场构造须二段中的应用

新场须家河组气藏为典型的特低孔低渗裂缝性气藏,裂缝的发育情况对气藏的勘探开发有重要作用。从新场地区构造特征及构造演化着手,利用3Dmove构造建模软件对须二段储层裂缝分布规律进行预测。研究表明:不同构造时期各层的裂缝普遍发育,Tx_2~2砂组现今时期应变量最大,裂缝主要发育在背斜的两翼。裂缝走向主要有近EW、NE和NW向3个方向,裂缝分布主要受地层形变和断裂发育的影响。     

樊庄区块煤储层非均质性的构造控制作用

樊庄区块煤储层发育的非均质性较强,直接导致了煤层气井间产能差异较大。在对樊庄区块进行构造精细解释和地应力分析的基础上,结合该区块煤储层的煤体结构和裂隙发育特征,深入研究了构造变形和现代构造应力场对煤储层非均质性的影响。研究表明,樊庄区块褶皱构造比较发育,主要为轴向近NS的宽缓褶皱,褶皱轴部构造裂隙发育,对煤储层有利;该区煤层中断裂构造非常发育,以正断层为主,越靠近断层,煤层变形破碎越明显,裂隙越发育,但在寺头断层附近为强烈变形的软煤发育带,对煤储层不利。现代构造应力场对煤储层的影响主要表现为对裂隙"开、闭"的控制,水平主应力差越大,越利于煤储层裂隙的开启。     

叠层石形态的主控因素—微生物席

许多学者利用叠层石的形态来判断所处的环境,但其形态并不仅仅受环境的影响。单一由叠层石形态推测环境不具有合理性,即使结合伴生沉积构造等来共同推测,叠层石在其中也没有发挥主要作用。当前讨论较多的影响叠层石形态的2个主要因素,即环境和微生物群落,经研究发现,环境控制微生物群落的成分,两者不属于并列关系,而是包含关系。微生物群落又决定了微生物席的类型,微生物席同时也会受到环境的改造,因此认为微生物席才是叠层石形态的主控因素。     

中华虎头蟹幼体发育的初步观察

对中华虎头蟹Orithyia sinica幼体发育过程进行观察。结果表明:幼体发育分为4个主要时期,包括3期溞状幼体和1期大眼幼体。当海水盐度为28,水温为(25.1±0.8)℃时,Ⅰ期溞状幼体历时4～5 d发育至Ⅱ期溞状幼体,Ⅱ期溞状幼体历时4～5 d发育至Ⅲ期溞状幼体,Ⅲ期溞状幼体历时5～6 d发育至大眼幼体,大眼幼体经过5～6 d发育至Ⅰ期仔蟹,幼体自然孵化完成全部发育过程共需18～22 d。幼体大小、第1和第2颚足外肢羽状刚毛数目、尾叉棘刺数目、腹部肢芽大小是区分各时期溞状幼体的主要形态特征。     

四川盆地南缘红层咸水发育规律探讨及避采建议

相比四川盆地内部，盆地南缘分布的红层区，具有地貌类型众多、构造发育的特点，对其咸水发育规律的研究鲜有报道。本文通过调查、水文地质钻探、取样分析测试等工作手段，发现咸水发育主要与地层岩性、深度、断层等相关。得出的结论有：(1)砂泥岩互层、含泥岩地层相比砂岩地层，更易发育咸水，敀优先考虑在砂岩分布区开发利用地下水；(2)深度主要影响了地下水的循环交替条件，浅部地下水循环交替强烈发育淡水，深部循环交替滞缓则会发育咸水；宜选取井深浅，井数多的分散式开发利用方式。(3)断裂带深部成分复杂的咸水会因浅部地下水的开采而上涌，造成浅部地下水咸化，宜避开断裂带开发利用地下水。本研究对于在四川盆地南缘红层区找水过程中避开咸水层具有借鉴意义。     

广西博白盆地邕宁群沉积相分析

研究区位于华夏板块与扬子地块的交界部位,钦杭成矿带西段,广西博白盆地内。邕宁群沉积物以粗粒碎屑岩为主,依据岩石学及沉积学的基本原理,通过对前人地质资料的整理及实际的野外勘测工作,认为古近系邕宁群沉积时期主要发育干旱-半干旱山麓洪积环境。综合岩性、沉积组构、碎屑粒度等资料发现该山麓洪积沉积可进一步细化出扇根、扇中、扇端等亚环境,并通过各沉积亚相及其沉积微相的精细描述,建立了研究区冲积扇的发育模型。该成果为认识研究区古近系时期的沉积背景及地质演变提供了可靠的依据,也为上覆地层南康组的研究提供了理论支持和借鉴意义。     

新型的LWC-1型离心式空气微生物采样器

本文简述了该采样器的构造、工作原理及其优点。也介绍了采样器的主要技术参数(如采样量、采样时间和噪声值等),并与样机进行对比测试。同时对人工微生物气溶胶和大气自然微生物的采样效果进行了对比。对传统的沉降平皿法和菌落在采样条上的分布以及交叉污染等问题进行了评价。该采样器广泛适用于生物洁净室和大气自然微生物的采样。     

岩溶区地质特征调查研究进展

调查岩溶区的地质特征,总结岩溶发育机制,对岩溶区桩基施工具有一定的指导意义。本文通过研究岩溶区地形地貌、地层岩性、地下水概况、岩溶空间分布等特征,总结岩溶发育机制,得到如下结论：（1）岩石中可溶性矿物含量越高,晶粒越细,溶解度越大,原生孔隙度越高,越有利于岩溶发育。（2）地下水的径流方向和径流强度决定了岩溶管道的发育方向和发育规模;地形坡度和岩溶地下水水力坡度小时,岩溶发育以平面向延伸为主,反之以垂直延伸为主。（3）在断裂交汇部位,岩石破碎程度较高,岩溶发育程度较高;褶皱轴部和倾伏、扬起端,断层或裂隙较为富集,有利于岩溶发育;在褶皱区岩溶多具沿褶皱走向发育的特点,其轴部岩溶更发育;向斜核部较背斜核部岩溶发育,核部构造较两翼发育。     

南京地铁3号线岩溶发育规律及其对工程建设的影响

勘察资料发现,拟建的南京地铁3号线滨江路站—五塘村站沿线溶洞较发育具有规模小、数量多,呈串珠状的特征,主要发育于灰岩断裂带及灰岩与泥岩交界面处。通过对该地区地层岩性和地质构造等地质背景分析发现．岩溶发育主要受断裂构造控制,构造运动升降作用导致了溶洞发育具多层性,地表水的径流范围等控制着岩溶的发育深度和规模。研究区的溶洞...     

豫西蒿坪沟银金铅锌矿床构造控矿分析及找矿方向

蒿坪沟银金铅锌矿床位于河南省西部熊耳山有色贵金属重点成矿区,华北地台南缘与秦岭造山带交接部位,出露地层主要为新太古界太华岩群高级变质岩系,属于薄脉状构造破碎带蚀变岩型矿床,矿体严格受断裂构造带控制。含矿构造破碎带以北东向为主,其次为近南北向。该矿床形成于晚侏罗世至早白垩世中国东部构造体制大转换(主压应力由近南北向转向北西—南东向)时期。北西—南东向主压应力场利用、改造已经形成的近南北向主压应力场产生的断裂构造体系,产生新的断裂构造组合,提供导矿和容矿空间。文章提出该矿区找矿潜力很大,并指出了下步找矿的重点部位和方向。     

浅析高速公路工程招投标中的最低评标价法

结合目前高速公路施工项目招投标活动的实际情况,阐述了最低评标价法的概念,归纳了其优点及存在问题,对完善最低评标价法提出几点策略,以期促进招标投标市场更加规范有序。     

Place-Making in Megaprojects in Melbourne

This article analyses state-led place-making practices in Melbourne. The two levels of government that influence planning in Melbourne make much of the city as ‘culturally vibrant’ and ‘creative’, and have incorporated creative city-inspired place-making principles into many layers of the planning system. An examination of the development of two mixed-use megaprojects in central Melbourne reveals however that ideals of culturally engaging public places, and indeed of creative landscapes for middle-class consumption, wither in the face of more basic imperatives for economic development. In these case studies the ‘creative city’, no matter how the idea is interpreted, has little traction either as a set of inclusive place-making principles or as a gentrification strategy. The article concludes that the creative city-inspired place-making objectives in the planning system at both state and local levels are ambiguous in their overall intents and completely unsupported by statutory controls. Such place-making objectives as are realised are the compromised results of the interplay of uncoordinated decisions, delivered at the pleasure of the developer.     

Pathogens in septage in Vietnam

Septage is widely acknowledged as a major source of infectious pathogens while disposal of septage, and the operation and maintenance of septic tanks, is not regulated in many developing countries. Twenty untreated septage and septage sludge samples were taken from Can Tho City, Vietnam to examine their pathogen content, and indicator micro-organisms. Escherichia coli and Enterococcus spp. were detected in all samples, regardless of sludge storage time. Phages were detected in 80% of samples. Salmonella spp. were detected in 70% of the untreated septage and 60% of septage sludge samples. Concentrations of phages and bacteria tested in septage sludge after many years of tank storage were much higher than the expected levels. Helminth ova were present in 95% of untreated septage samples with an average of 450 ova l^− 1, and were detected in all septage sludge samples with an average of 16,000 ova l^− 1. Twelve varieties of helminth ova were identified. More helminth ova varieties in higher concentrations were found in septage than those reported from stool samples. The varieties' frequency ranged from 10% to 50% and Ascaris lumbricoides predominated. Results show that pathogens and indicator micro-organisms, especially helminth ova, accumulate in sludge. Thus helminth ova should be considered when septage sludge is treated and used for agriculture. Proper health protection measures must be applied for people handling septage.     

在市场中实践在实践中学习在学习中进步--工程公司市场化进程的回顾与展望

近两年来，工程公司在提高市场竞争意识、推动市场化进程中做了大量工作，其中坚持走出去的方针是我们自我加压、推行加快市场化步伐的一个重要战略步骤。     

新时期广东城市化的新特点

新时期广东城市化出现以下特点:知识源导向、城市由单体向群体化发展、产业集群推动、政府主导自上而下的集约化发展、城镇化向城市化转变、由重“数量”发展向重“质量”发展的转变。     

新形势下高校强化基建财务管理的探讨

在市场条件下高校基建财务人员在加强日常财务管理的同时,必须树立起高度的工作责任心,抓好事前监督、事中监督、事后监督三个环节,全面理解、贯彻执行《高等学校财务制度》,管好用好各项基本建设资金,提高基建财务管理水平,更好地完成高校各项基建任务,以有限的投资,最快的建设速度,获得最大的投资效益。     

2005年北京办公物业市场七大趋势

趋势一:CBD区域写字楼集中放量从各区域规划方案上看,CBD区域多数项目在03～04年处于项目的报批手续及拆阶段,预计2005年正式推向市场,因此2005年CBD区域将成为北京市场供应集中的域,区域即将供应的项目有北京财富中心(二期)、金地国际花园、万达广场、SOHO尚都、万通中心、世纪财富中心、怡禾国际中心、光华国际等。除去未知项目,2005CBD写字楼办公面积的供应量为60万平方米左右。中关村区域经过一段时间的集中供后开始逐步放缓,2005年供应的体量相对较大的项目有中关村金融中心、新中关。金街区域可能开盘的项目只有2个:英蓝国际中…     

浅谈我国工程项目建设成本控制存在的问题

结合目前我国施工企业工程项目成本管理现状,对工程项目成本管理过程中存在的问题进行了较详细的分析,并提出了一些解决问题的办法,以做好项目成本控制工作,进而增强企业经济实力。     

Variation in property taxation in Tulsa

Conclusions It may be reasonably concluded from this study that the range of variation in these ratios of assessed to actual value are of a reasonable size for the great majority of cases. The frequency distribution of these sample ratios was not normal, however, as was assumed a process of this type would produce. On the other hand, the failure of the regression analysis to identify any significant variables which would explain these variations would tend to re-enforce the assumption that the fluctuations were indeed of a random nature.To sum it up in one paragraph, aside from a few extreme cases, the assessing process appears to give estimates which are more consistent than would be expected under the assumption that any errors would be of a random nature, but the regression analysis was unable to isolate any particular socioeconomic characteristics which would explain the variation which was present.Financial support for this research project was furnished by the University of Tulsa.