多通道通用地震前兆数据采集器研制     

王喜珍  马志勇  滕云田  张旸  张敏 《地震地磁观测与研究》2013,34(1)

地震前兆数据采集器专一,通用性差,给地震观测和维护带来一定的困难.采用高精度AD开发多通道通用数据采集器.该采集器具有6个采集通道,可灵活配置采样率和信号输入范围,采用网络进行数据传输和远程监控,可以连接大多数地震前兆传感器.  相似文献   

巴西萨利莫斯盆地油气地质特征及油气分布规律     

庞正炼  樊太亮  何辉  李积林  唐山  马腾 《地质科技情报》2012,(4):67-74

基于萨利莫斯盆地基础地质条件,以石油地质理论为指导,对盆地的生储盖条件及成藏特征进行了研究,并利用多因素叠合的方法对盆地潜在有利区进行了预测。分析认为,萨利莫斯盆地是新元古代末期克拉通内断陷基础上形成的克拉通盆地,形成古生界和中-新生界两套沉积充填序列。盆地内主力烃源岩和储盖层均发育在古生界序列中。泥盆系然迪亚图巴组页岩是盆地中的主力烃源岩;石炭系朱鲁尔组砂岩和泥盆系俄勒组砂岩是最有利的储集层段,与石炭系卡让利组、朱鲁尔组的蒸发岩和页岩构成良好的储盖组合。受岩浆侵入的影响,烃源岩的生排烃分为岩浆侵入前和侵入后两个阶段,并以第二阶段为主生排烃阶段;受晚期构造运动的影响,盆地具有多期成藏的特征,最后一期成藏决定了油气的最终分布。盆地勘探经验表明,油气田往往位于断裂带周围,并受烃源岩的发育位置控制。因此,认为盆地中烃源岩发育区内的断裂带周围是油气田,特别是气田的有利勘探领域。  相似文献   

晋江市地下水环境质量评价方法     

朱建成  马腾 《福建地质》2012,31(2):175-184

通过物元特征与MAPGIS属性联接技术,将物元评价模型引入MAPGIS中,实现基于MAPGIS的晋江市地下水环境质量的综合评价,为地下水环境质量评价提供新思路。  相似文献   

燕山板内造山带中部“承德逆冲构造”的褶皱相关断裂构造模型   总被引：2，自引：0，他引：2       下载免费PDF全文

张长厚  邓洪菱  李程明  刘孜  邓洪旦  滕飞 《地学前缘》2012,19(5):27-40

燕山板内造山带中部承德盆地复杂的中生代褶皱及逆冲断裂构造,曾被解释为土城子组沉积之后大型逆冲推覆构造(位移量大于40～45km)又经褶皱变形的结果。近年来,土城子组沉积相和物源区分析、中新元古界沉积古地理研究以及相关构造变形研究结果等,对这一变形大型逆冲构造模型提出了多方位质疑。但已有研究并未提出新的构造模型来解释这一复杂构造区域中生代构造变形样式和形成机制。文中通过对承德盆地区域主体构造——承德向斜、向斜两翼逆冲构造变形几何学与运动学特征、向斜转折端附近构造变形与断裂发育状况进行详细野外调查及对关键地质体同位素地质年代进行测试,发现承德向斜两翼逆冲断层为分别向向斜核部以外区域逆冲的独立逆冲断层,逆冲断层活动与承德向斜变形是在统一的收缩变形体制下准同时形成的。它们形成于土城子组之后、张家口组火山活动之前,即距今约139～136 Ma。据此提出了"承德逆冲构造"的背离向斜逆冲构造模型。这一模型合理地解释了燕山中部承德盆地区域中生代构造变形和相应的盆地充填特征,同时表明,燕山板内造山带并不存在碰撞造山带前陆褶皱逆冲带中常见的大型薄皮逆冲构造样式。这一研究结果展示了褶皱相关断裂构造模型在研究和揭示收缩构造变形区域大尺度褶皱与断裂构造相互关系及准确重建区域构造演化过程方面的重要意义。  相似文献   

Numerical investigation of the influence of underground water injection on the groundwater system in a shale gas reservoir in southwestern China     

Wenjie Yin  Litang Hu  Lili Yao  Yanguo Teng 《Environmental Earth Sciences》2016,75(14):1092

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津巴布韦太古宙克拉通金矿化年龄综述          下载免费PDF全文

李科  王腾  方联华 《地质找矿论丛》2016,31(4):607-615

文章通过系统梳理津巴布韦克拉通成矿年代学研究成果,结合野外观测工作、赋矿岩体间接年龄测定以及热液矿物的同位素年龄测定,总结了其区内典型地区如Harare-Shamva绿岩带、Midlands绿岩带、Mutare绿岩带及Limpopo活动带北缘的金矿化时限分布特征,提出主金矿化年龄分布范围为2 660 Ma—2 610 Ma,接近于新太古代地壳块体稳定克拉通化阶段末期,属同构造期或后构造期成矿;另一期矿化作用时限为2 420 Ma—2 380 Ma,与后克拉通化作用中大岩墙的侵位、区域性应力转换拉伸以及再活化作用引起的广泛的岩浆作用有关。两期矿化作用事件可与其它地区典型克拉通相类比。  相似文献   

Research on Spatial Uniformity of Rainfall Generator     

Liu Bo  Wang Xiaolei  Kang Zhaojing  Su Teng  Zhai Dongli  Yuan Jing 《地球科学进展》2016,31(8):820-828

In order to improve the spatial uniformity of rainfall generator to natural rainfall uniformity, according to the rotation of the test platform, a rotary test platform was designed and developed, and the slip-ring was used to solve the problem of signal transmission in the process of the rotation. Besides, the relationship between rotational speed and spatial uniformity of rainfall generator was established. The results of tipping-bucket rain gauge tested in rainfall field and flow type rainfall intensity standard device testing demonstrated that rainfall generator as the rainfall accumulation and rainfall intensity of the test environment was feasible. Results showed that with the increase of the rotate speed, spatial uniformity first increased, and then decreases, and with the decrease of the test area, different speed presented different trends. When the rotational speed was 1 RPM, test area was 1.6 m×1.6 m and 1.2 m×1.2 m, its uniformity of rainfall generator reached maximum which was bigger than 95%; with the increase of the rotate speed, tipping-bucket rain gauge of RA and RI were of good consistency under the RPM 1 and RPM 2 and the RA maximum deviation reached minimum, 0.2 mm; the average of RA under flow type rainfall intensity standard device test consisted well with rotating test platform at speed RPM 1 and 2, which illustrated the rotary testing platform was consistent with the flow type rainfall intensity standard device. It showed that the method to improve the space uniformity of rainfall generator is feasible and it could find the dynamic difference of RA.  相似文献   

依兰盆地达连河油页岩成矿控制因素研究          下载免费PDF全文

刘志逊  代鸿章  张鑫刚  马腾  葛佐  贾音传 《地质科学》2014,49(4):1232-1246

达连河油页岩含矿区位于黑龙江省依兰地区,该区是一个半地堑式断陷盆地。油页岩形成受到多重因素制约,构造上在靠近断裂F₂的煤和油页岩厚度较厚,随着湖盆沉积范围的扩大,表现了一种从湖平面逐渐向岸上上超的过程;高水位体系域浅湖-半深湖相和水进体系域湖泊-沼泽相形成不同成因类型油页岩;孢粉分析结果可知油页岩形成的气候总体呈现出气候温和、 温度下降的发展趋势;而气候的波动影响了古生物的发育,降低了有机质生产能力,进而造成油页岩含油率低。  相似文献   

江汉平原地球关键带监测网建设进展          下载免费PDF全文

李俊琦  马腾  邓娅敏  杜尧  王志强  姜月华 《中国地质调查》2014,6(5):115-123

地球关键带是地球科学领域的热点研究主题,我国地球关键带研究尚处于起步阶段,如何形成符合我国实情的地球关键带调查与研究范式,仍需进一步探索。江汉平原地处长江中游,是长江经济带的重要组成部分之一,其主要特点在于受不同级次水利工程的强烈影响。基于多年调查研究,在江汉平原建立了一套较为完善的地球关键带监测网络,涉及水、土、气、生物等各地球关键带要素。监测网络设置上,既考虑了不同级次水利工程的影响,也考虑了区域营养元素/重金属的富集特征; 监测技术上,部分指标实现了原位监测,大部分指标实现了野外现场测试,未来将进一步加强在线监测并实现数据远程传输。目前,江汉平原地球关键带监测网已成功纳入全球地球关键带研究网络,这是我国地球关键带调查与研究的初步探索,不仅可为长江流域的地球关键带调查研究提供示范,也可为长江大保护战略提供有力的理论与方法支撑。  相似文献   

Soil microbial community response to seawater intrusion into coastal aquifer of Donghai Island,South China     

Yanguo Teng  Jie Su  Jinsheng Wang  Ning Dai  Jian Li  Liuting Song  Rui Zuo 《Environmental Earth Sciences》2014,72(9):3329-3338

Due to the sea level rise and the excessive exploitation of freshwater, seawater intrusion is becoming a critical issue. To clarify the degree of seawater intrusion in Donghai Island and the microbial community structure and functional response to seawater intrusion, groundwater samples and sediment samples were collected at profiles A, B; the profiles were along the direction of groundwater flow, perpendicular to the coastline, a hydrogeochemical survey and soil microbial community analysis were also performed. The hydrogeochemistry analysis showed that the chemical type of groundwater was Na–Cl, brackish water was dominant in the area, and coastal groundwater was strongly affected by seawater intrusion. The effect of seawater intrusion on structural and functional diversity of soil microbes was analyzed from soil samples of the study area, by polymerase chain reaction denaturing gradient gel electrophoresis (PCR-DGGE). The results of DGGE patterns and phylogenetic tree show that the extent of seawater intrusion has directly influenced soil microbial community structure. The changes of microbial community structure might be related to the major elements’ concentrations in groundwater. Phylogenetic affiliation indicated that γ-proteobacteria were dominated in the profile A, while β-proteobacteria were mainly appeared in the profile B. The Flavobacteriaceae was only appeared at the shrimp ponds nearby.  相似文献