检索结果-南通市图书馆

Numerical simulation of land subsidence caused by high-rise building,applied in Tanggu,china

在线全文

cnki会议

学校读者我要写书评

暂无评论

Numerical simulation of land subsidence caused by high-rise ...

中国科学院地质与地球物理研究所第11届（2011年度）学术年会

作者： fengshan ma~a,aihua wei~*b,demin ding~c,jie guo~d key laboratory of engineering geomechanics,institute of geology and geophysics,china academy of sciences,beijing 100029,p r china

Ground subsidence is aggravated and becomes a prominent phenomenon recently in Tanggu,*** subsidence reached its most critic state because of intensive water over-extraction in ***,over-draft withdraw of groundwater has been strictly ***,the rate of settlement decreased in the subsequent ***,in recent year,ground subsidence becomes a prominent hazard again in some high-rise building ***-based monitoring data indicated new cone of depression has been *** detail investigation and analysis,it was thought that the appearance of the new subsidence center is the direct consequence of the construction of high-rise *** this study,based on acquired monitoring data of subsidence,a special software package of Adina computer programs was applied in this study and analysis of the mechanism of subsidence induced by *** results indicate that this method is useful to manage the land subsidence problem to high-rise building group.

关键词： Ground subsidence High-rise building Adina

The Characteristics and Causes of Land Subsidence in Tanggu Based on the GpS Survey System and Numerical Simulation

在线全文

cnki会议

学校读者我要写书评

暂无评论

The Characteristics and Causes of Land Subsidence in Tanggu ...

中国科学院地质与地球物理研究所第11届（2011年度）学术年会

作者： ma fengshan~1,wei aihua~(1*),HAN Zhantao~2,ZHAO Haijun~1 and guo jie~1 1 key laboratory of engineering geomechanics,institute of geology and geophysics,Chinese academy of sciences,beijing 100029,china 2 The institute of Hydrogeology and Environmental geology,Chinese academy of Geological sciences, Shijiazhuang 050061,china

Land subsidence is a severe hazard threatening Tanggu,a flat lowland area,and evidences of land subsidence can be seen throughout the city.A new reasonable GpS network was set up in this area from 2008 to *** monitoring data show that land subsidence was serious and two main subsidence cones were obviously formed In the *** emerged at Hujiayuan,with the maximum rate reaching 60 mm/a,and the influence region enlarged prominently from 2005 to *** other one occurred at Kaifaqu,which became obvious only after 2005,and it showed a decreasing tendency with *** analyze the causes of ground settlement,a correlation between groundwater withdrawal and land subsidence was firstly *** results confirmed that over-exploitation of groundwater was the major cause for the severe settlement In ***,the subsidence of Kaifaqu was also related to groundwater withdrawal before ***,the relationship became unconspicuous after *** find the cause of this abnormity,a three-dimensional finite element numerical model,coupled with groundwater flow and subsidence,was *** simulation results indicate that the subsidence Induced by high-rise buildings is serious,but the affected range is limited and it also shows a decreasing trend with time,corresponding to the subsidence characteristics at ***,more attention should be paid to this hazard induced by engineering construction besides groundwater withdrawal,as more high-rise buildings are under construction in Tanggu.

关键词： land subsidence GpS subsidence cones finite element numerical model high-rise buildings

regularity of ground rockmass movement induced by backfill mining metal mine

在线全文

cnki会议

学校读者我要写书评

暂无评论

Regularity of ground rockmass movement induced by backfill m...

中国科学院地质与地球物理研究所第十届(2010年度)学术年会

作者： F.S.ma,H.J.Zhao,D.M.ding,Y.M.Zhang,J.Wang & J.guo key laboratory of engineering geomechanics,institute of geology and geophysics,china academy of sciences,beijing,pr china

Based on a geological investigation and in-situ stress measurements,this paper describes ground movement and the characteristics of ground fissures as a case study in Jinchuan No.2 *** has been put on the analysis of surface movement induced by underground cut and fill mining using the GpS monitoring *** results showed that ground subsidence occurred as the mining depth *** present,the largest accumulated subsidence reached 1287.5 mm from 2001 to *** displacement areas,with large curvature in both sides of a depression centre,were exactly the areas in which the two fissure zones are *** data indicates that the large-scale ground movement has not been avoided absolutely,despite using cement-backfilling ***,ongoing monitoring of ground movement will be particularly useful analyzing deformation mechanisms.

关键词：

The Characteristics and Causes of Land Subsidence in Tanggu Based on the GpS Survey System and Numerical Simulation

在线全文

cnki会议

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2011年第6期85卷 1495-1507页

作者： ma fengshan wei aihua HAN Zhantao ZHAO Haijun guo jie key laboratory of engineering geomechanics Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China The institute ofHydrogeology andEnvironmental geology Chinese Academy of Geological Sciences Shijiazhuang 050061 China

Land subsidence is a severe hazard threatening Tanggu, a flat lowland area, and evidences of land subsidence can be seen throughout the city. A new reasonable GpS network was set up in this area from 2008 to 2010. The monitoring data show that land subsidence was serious and two main subsidence cones were obviously formed in the region. One emerged at Hujiayuan, with the maximum rate reaching 60 ram/a, and the influence region enlarged prominently from 2005 to 2010. The other one occurred at Kaifaqu, which became obvious only after 2005, and it showed a decreasing tendency with time. To analyze the causes of ground settlement, a correlation between groundwater withdrawal and land subsidence was firstly made. The results confirmed that over-exploitation of groundwater was the major cause for the severe settlement in Hujiayuan. Meanwhile, the subsidence of Kaifaqu was also related to groundwater withdrawal before 2005. However, the relationship became unconspicuous after 2005. To find the cause of this abnormity, a three-dimensional finite element numerical model, coupled with groundwater flow and subsidence, was built. The simulation results indicate that the subsidence induced by high-rise buildings is serious, but the affected range is limited and it also shows a decreasing trend with time, corresponding to the subsidence characteristics at Kaifaqu. Therefore, more attention should be paid to this hazard induced by engineering construction besides groundwater withdrawal, as more high-rise buildings are under construction in Tanggu.

关键词： land subsidence GpS subsidence cones finite element numerical model high-rise buildings

The land subsidence characteristic following the termination of groundwater pumping to different aquifers

在线全文

学校读者我要写书评

暂无评论

The land subsidence characteristic following the termination...

中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： fengshan ma aihua wei~* demin ding jie guo key laboratory of engineering geomechanics Institute of geology and geophysicsChina Academy of Sciences

Land subsidence is particularly critical in Tanggu,due to its flat-lying topography and large thickness of the soft *** subsidence up to 140mm/year reached its most critical state in the *** mitigate this hazard,some strict measures resulted in a drop in groundwater use, especially banning the exploitation of groundwater,were ***,the subsidence indeed had a decreased trendy in this time ***,a GpS-based monitor data also revealed that light uplift phenomena emerged in some individual monitor *** discussing the relationship between this abnormality and the termination of groundwater,and analyzing the deformation characteristic after exerted this measure,this article with the aid of numerical method predicts the land *** result reveal that the settlement is ceased and obvious uplift phenomenon only emerges in the central region of the stop mining well,due to various supply resource the water level could have a rapid recovery after ***,own to the time-dependant behavior of the soft layer and clay aquitard,the most region far form the ban well also emerges subside,but the subsidence rate switches to decreased trendy with time Generally,the subsidence or uplift is stabilized in a finite time interval after the termination of groundwater ***,due to the different hydrogeologic and stratum conditions,the stabilized subsidence and uplift value are also different from unit 2 to unit 5.

关键词： Land Subsidence Uplift The Numerical Method Time-dependant Behavior

Characteristics and mechanisms of mining-induced fault reactivations in an open-pit mine

在线全文

cnki会议

学校读者我要写书评

暂无评论

Characteristics and mechanisms of mining-induced fault react...

中国科学院地质与地球物理研究所2013年度（第13届）学术年会

作者： Haijun Zhao fengshan ma jie guo aihua wei~* key laboratory of engineering geomechanics Institute of Geology and GeophysicsChinese Academy of Sciences

Fault reactivation is a common and important engineering geological phenomenon. However,the manifestation modes and degrees of open-pit mining-induced fault reactivation vary with the engineering geological *** the current study,several common types of fault reactivations were identified according to the geological investigations in the Jinchuan open-pit mine of china. Different models of fault reactivation and their influences on slope deformation were *** on these observations,the spatial characteristics of fault reactivations were *** development conditions of fault reactivations and their formation mechanisms were further studied by some theoretical *** results are helpful in the understanding of fault reactivations and also contribute to the slope deformation studies.

关键词：

GpS monitoring and analysis of ground movement and deformation induced by transition from open-pit to underground mining

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of rock Mechanics and Geotechnical engineering 2012年第1期4卷 82-87页

作者： fengshan ma Haijun Zhao Yamin Zhang jie guo aihua wei~* Zhiquan Wu Yonglong Zhang key laboratory of engineering geomechanics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China 2Longshou Mine Jinchuan Group Co.Ltd.Jinchang737100China

To trace the potential hazards of open-pit slope in Longshou mine,global positioning system（GpS） is applied to monitoring ground movement and deformation induced by transition from open-pit to underground *** long-term monitoring from 2003 to 2008,huge amounts of data were *** results show that large-scale ground movement and deformation have occurred in mining area,and the movement area is *** displacement boundary of settlement trough is 2.0 km long along the exploratory line,and 1.5 km long along the strike of ore *** monitoring results basically agree with the practical deformation state of open-pit *** is indicated that the long-term GpS monitoring is an effective way to understand the mechanism of ground movement and deformation in mine area. 更多

关键词： open-pit ground movement long-term GpS monitoring deformation analysis

怒江断裂带邦达断裂中段全新世活动证据及其古地震记录

在线全文

学校读者我要写书评

暂无评论

地质论评 2022年第6期68卷 2021-2032页

作者：钟宁杨镇张献兵丁莹莹吴瑞安王炀郭长宝李海兵自然资源部活动构造与地质安全重点实验室中国地质科学院地质力学研究所北京100081 中国地质调查局新构造与地壳稳定性研究中心北京100081 中国地质大学(北京)地球科学与资源学院北京100083 自然资源部深地动力学重点实验室中国地质科学院地质研究所北京100037

活动断裂带常是大地震的发震构造,并诱发地质灾害,产生黏滑位错和蠕滑变形,并形成断裂破碎带,进而对城市和工程安全直接造成威胁。因此,厘定活动断裂的空间几何展布、活动性对工程地质研究和防灾减灾具有重要的指导意义。通过遥感解译... 详细信息

活动断裂带常是大地震的发震构造,并诱发地质灾害,产生黏滑位错和蠕滑变形,并形成断裂破碎带,进而对城市和工程安全直接造成威胁。因此,厘定活动断裂的空间几何展布、活动性对工程地质研究和防灾减灾具有重要的指导意义。通过遥感解译、错断地貌、槽探和14C测年,对怒江断裂带邦达断裂中段的发育分布特征与活动性进行了调查研究。结果表明:邦达断裂中段在1457±51 a Bp/1598±47 a Bp发生过古地震事件,为引发中强地震的全新世活动断裂。断裂活动主要受控于川滇菱形块体的南向逃逸挤出和印度板块NEE向直接挤压作用,表现为走滑兼有逆冲分量的高角度活动断裂。该研究为了解怒江断裂带邦达断裂中段活动性和工程抗震设防提供了基础资料。

关键词：活动断裂全新世古地震邦达断裂中段怒江断裂带

深部磷矿冒顶影响因素分析及预防——以湖北某磷矿山为例

在线全文

学校读者我要写书评

暂无评论

矿冶 2022年第6期31卷 9-16,46页

作者：岑兰爱吝曼卿丰光亮瞿定军王国均刘建武汉工程大学资源与安全工程学院武汉430073 武汉工程大学磷资源开发利用教育部工程研究中心武汉430205 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室武汉430000 湖北宜化集团矿业有限责任公司湖北宜昌443000 湖北杉树垭矿业有限公司湖北宜昌443100

针对深部磷矿开采过程中高应力冒顶现象突出,严重影响矿井安全高效生产的问题,通过文献研究、现场调研与理论分析,对湖北某深部磷矿区东部矿段矿体冒顶现象特征、影响因素进行深入系统的研究,并提出了适应性的预防控制措施。结果表明:... 详细信息

针对深部磷矿开采过程中高应力冒顶现象突出,严重影响矿井安全高效生产的问题,通过文献研究、现场调研与理论分析,对湖北某深部磷矿区东部矿段矿体冒顶现象特征、影响因素进行深入系统的研究,并提出了适应性的预防控制措施。结果表明:湖北某深部磷矿区东部矿段矿体冒顶现象主要集中在东西向巷道拱顶、拱肩处。地质、施工、顶板管理等三方面是湖北某深部磷矿区东部矿段矿体冒顶现象的主要影响因素。在致灾原因研究基础上,提出了工作面开采全过程的冒顶现象适应性防治措施,具体为:选择合理的采矿方法和回采顺序;选择合理的支护方式;加强对顶板浮石的检查与处理;采用合理的地压监测手段;加强顶板管理。研究成果可为该磷矿山及类似条件的磷矿山地下开采工程的顺利建设和安全生产提供借鉴。

关键词：深部磷矿冒顶影响因素预防措施