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1.
通过系统分析宁阳煤田地质资料及井下实际观测研究,阐述了宁阳煤田的构造格局及煤田构造分区性和分层性的特点,论述了煤田滑动构造的基本特征,并对煤田构造复杂性及其形成机制进行了探讨。  相似文献   

2.
从区域构造特点、构造时代、构造形式和构造应力场等方面对大同侏罗纪煤田巳发现的987条断层进行分析,确认了其构造体系,找出了构造规律,这对煤田的勘探和开采具有重要作用。  相似文献   

3.
总结并完善了庙梁煤田构造特点,给出了构造形成原因及对煤田的破坏结果。  相似文献   

4.
本文介绍了遥感图像地质解译研究煤田区域构造的展布规律和演化历史,从而了解认识其与煤田小构造之间关系的工作方法,并举例加以说明。  相似文献   

5.
余秀冠 《科技信息》2010,(29):342-343
宁东煤田北部与其相邻的上海庙煤田为同一含煤沉积体系,其区域构造也具有连续性,随着上海庙煤田的勘查程度的逐步提高,查清宁东煤田-上海庙煤田的区域构造,对进一步勘查和煤矿开采都具有很好的指导意义,本文对此进行了初步探讨。  相似文献   

6.
姬晓飞  李静  沙国顺 《科技信息》2012,(29):415-415,430
河南石炭、二叠系中的滑动构造,是20世纪80年代在河南含煤岩系中发现的一种新的构造类型。由于其断层面倾角低缓、缺失地层厚度大、影响范围广.使得在三叠系红色岩层下找到了埋藏较浅的可采煤层,受到了地质学家和广大地质工作者的普遍重视。现阶段煤田勘查已向2000m延深,再论河南含煤岩系中的滑动构造,对研究探讨我国区域构造特征和煤田深部找矿与勘查有重要指导意义。  相似文献   

7.
煤田构造研究的一个重要方法是遥感资料处理与构造解释。中国的煤田构造遥感是伴随煤田地质勘查发展起来的,在含煤盆地圈定、区域构造分析等方面发挥了重要作用。新一轮煤炭资源调查工作采用了煤田遥感地质调查方法,注重煤田构造解译与分析。从在西部地区的应用现状来看,煤田构造遥感在今后的煤炭资源调查评价中仍将发挥重要作用。  相似文献   

8.
煤田构造预测中的数学地质方法   总被引:1,自引:0,他引:1  
介绍数学地质方法在煤田构造地质学研究中的应用成果,给出构造曲面的立体型态模拟,模糊数学方法,判别分析以及曲面磨光法等煤田构造特征的研究与分析的数学模型和研究实例。  相似文献   

9.
在分析临汝煤田的推覆构造、滑覆构造及断块构造特征和成因机制的基础上,指出了河西陈、温泉街、朝川矿区深部等找煤的有利区段。  相似文献   

10.
宿县、临涣矿区是淮北煤田的主要产煤地带。自石炭二叠纪煤系形成以来,该区经受了多期构造活动,形成了一套矿区特有的构造组合。  相似文献   

11.
该文认为,阿尔金山走滑断裂构造是一巨型左行左列走滑断裂兼逆冲推覆和韧性剪切性质的断裂构造带。走滑断裂带叠覆区发育拉分盆地。走滑断裂带旁侧拉张区形成火山岩带、拉张盆地及相应的弧形构造;挤压区形成弧形构造及相应的挤压-拉张盆地。中新生代以来,走滑断裂带最大水平位移量为550km。  相似文献   

12.
青藏高原新生代构造研究最新进展和构造发展的阶段性   总被引:6,自引:0,他引:6  
从逆冲推覆构造、走滑构造、伸展构造3个方面对喜马拉雅-青藏高原造山带内的新生代(印度-亚洲大陆碰撞之后)构造最新进展进行了总结和分析.基于这些资料,提出青藏高原内部变形的3个阶段:始新世(50~33 Ma),青藏地区总体呈刚性,变形集中在造山带的南北周缘;渐新世-中新世初(33~22 Ma),高原中西部以逆冲断层形式的散布式挤压变形,以东部大型走滑断层为边界的块体挤出与块体旋转3种变形方式共存;中新世初至今(22~0 Ma),高原块体的强度进一步变弱,以遍及高原整体的连续散布变形为主,出现共轭走滑断层与伸展构造.认为南北走向的地堑(正断层)是同样处于东西伸展应力体系下的藏中共轭走滑断层向造山带南北延伸扩展的产物.此外,还对造山带内会聚量的调节方式进行了定量的分析和估算.  相似文献   

13.
A special extended basin topography is developed in the middle segment of the Altyn Tagh Fault Zone. The ratio of its length to width is over 50. The long boundaries at the two sides of the basin are controlled by the straight normal faults with strike-slip component. Within the basin, the Cenozoic strata are spread. The Altyn Tagh main fault goes through the basin, and a series of strike-slip topography was formed within the basin. The reverse thrust structures were formed at the two sides of the center of the basin, thus making the geological bodies composed of old metamorphic rocks at the two sides of the basin extrude vertically,and forming the extended massif (mountain) at the sides of the basin and parallel to the basin. This special topography was called the strike-slip fault basin. The giant extended strike-slip fault basin began to form during Pliocene, and its topography was basically formed during the late Pleistocene. It is the special topography formed during the strike-slip deformation process of the Altyn Tagh Fault Zone and under both transpression and uplifting.  相似文献   

14.
喀拉玉尔滚断裂系位于塔里木盆地北部,是塔北系列北西向展布的断裂之一。为了研究喀拉玉尔滚断裂系性质以及对塔北构造格局的影响,通过野外考察以及地震剖面解释,得出喀拉玉尔滚断裂为一条北西向右旋走滑断裂,受挤压-剪切作用,伴生北喀、中喀和南喀3个雁列褶皱以及次级断裂,为典型走滑断裂展布形态。喀拉玉尔滚断裂带由古生界北西向构造带继承演化而来,曾经历古生代强烈挤压构造运动、中生代平静沉积、新生代斜冲运动3期构造作用,形成了现今地表构造样式。喀拉玉尔滚断裂带处在乌什-温宿构造单元和库车-塔北构造单元之间,对两侧变形、差异压缩起到调节作用。喀拉玉尔滚走滑断裂及其伴生构造的发育可能对油气的运移和聚集产生有利条件。  相似文献   

15.
景谷盆地遥感地质解译及原盆地恢复   总被引:5,自引:1,他引:5  
云南景谷盆地是迄今世界上最小的含油气内陆盆地。遥感地质解译发现该盆地北西和南东各有一条具正断层性质的走滑断层。两条断层呈北东向雁行斜列,左行走滑,并将盆地周边的构造有机地联系起来。景谷盆地的原盆地——大景谷盆地则是中新世时形成于两条走滑断层左侧叠覆区内的地堑式菱形断陷盆地。大景谷盆地的面积是现今景谷盆地的4倍左右,其沉积盖层有较大的厚度被剥蚀掉了。大景谷盆地的形成和发展为盆地油气藏的形成创造了良好的条件。  相似文献   

16.
在对木桶岩、木担坝两个拟选井田进行航片解译、各井田地质踏查、区域煤田地质资料研究、拟选井田的交通、运输、建井投资等对比研究基础上,采用技术经济指标对比和决策树相结合的分析方法,做出了详查井田的选点决策,将木担坝一带作为详查井田。  相似文献   

17.
Coalfield fires are considered a global crisis that contributes significantly to environmental destruction and loss of coal resources and poses a serious threat to human safety and health. In this paper, research related to the initiation, development, and evolution of coalfield fires is reviewed. The existing detection and control techniques of coalfield fires are also reviewed. Traditional firefighting is associated with waste of resources, potential risks of recrudescence, potential safety hazards, extensive and expensive engineering works, and power shortages. Recently, coalfield fires have been recognized as having significant potential for energy conservation and heat energy recovery. Thermoelectric power generation is regarded as a suitable technology for the utilization of heat from coalfield fires. The extraction of heat from coalfield fires can also control coalfield fires and prevent reignition leading to combustion. Technologies for absorbing heat from burning coal and overlying rocks are also analyzed. In addition, the control mode of “three-region linkage” is proposed to improve firefighting efficiency. Integrating heat energy recovery with firefighting is an innovative method to control coalfield fires.  相似文献   

18.
Coalfield fires are considered a global crisis that contributes significantly to environmental destruction and loss of coal resources and poses a serious threat to human safety and health. In this paper, research related to the initiation, development, and evolution of coalfield fires is reviewed. The existing detection and control techniques of coalfield fires are also reviewed. Traditional firefighting is associated with waste of resources, potential risks of recrudescence, potential safety hazards, extensive and expensive engineering works, and power shortages. Recently,coalfield fires have been recognized as having significant potential for energy conservation and heat energy recovery. Thermoelectric power generation is regarded as a suitable technology for the utilization of heat from coalfield fires. The extraction of heat from coalfield fires can also control coalfield fires and prevent reignition leading to combustion. Technologies for absorbing heat from burning coal and overlying rocks are also analyzed. In addition, the control mode of "three-region linkage" is proposed to improve firefighting efficiency. Integrating heat energy recovery with firefighting is an innovative method to control coalfield fires.  相似文献   

19.
通过对莫里青断陷构造、沉积特征及油气成藏规律系统分析,总结出西北缘走滑断裂带演化特征及其对油气勘探的意义。研究结果表明:西北缘断裂成盆期为一条高角度的走滑张性断裂,新近系受挤压应力作用发生反转,形成了内部发育众多具走滑性质的次级逆冲断层、挤压褶皱、花状等构造的西北缘走滑逆冲断裂带;宏观来看西北缘断裂经历了早期走滑拉张和晚期走滑挤压2个演化阶段;西北缘走滑断裂对油气勘探具重要意义:深大断裂通过提供大坡度构造环境、有效物源及保存条件为湖泊水下扇有效储集体形成创造了有利条件,且水下扇中扇辫状水道微相上的油气产能较高;断裂带内部形成断褶皱等构造圈闭、具有挤压性质的逆冲断层封堵油气等因素为油气聚集提供了有效圈闭条件;各条件有效配置使得研究区西北缘走滑断裂带成为较有利的油气富集区带。  相似文献   

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