在大型企业高质量发展的大背景下,江苏核电在国内首创以"安全、可靠、高效、环保"为核心管理要素的SREE质量法则,作为指引企业各方面工作开展的指挥棒,并运用系统思维,推进精益管理,围绕多流程管理中的部门壁垒、流程衔接、过程交付等亟须解决的问题,建立了"基于SREE质量法则的链式反应"质量管理模式.该模式既符合大型企业发展要求,又具有核电行业特色,是核电厂高质量发展管理模式的有益探索.
高质量发展既是我国经济社会发展的总体要求,也是我国建设现代化经济体系的必由之路.江苏核电有限公司(以下简称"江苏核电")积极探索符合自身特性的高质量发展路径,创建质量法则,并基于企业多流程管理的内在逻辑,从激发、倍增和反馈三个过程对大型核电企业多流程管理进行了探索与实践,从质量文化建设、质量责任落实、质量体系整合、全产业链质量协同以及质量人才培养等方面对江苏核电管理模式运行进行了总结和思考.
为了比较研究直立长方体(Prism)模型、Tesseroid单元体模型、质量线(Line-mass)模型和质量点(Point-mass)模型等4种基于DEM(digital elevation model)重力地形改正模型的精度.通过模型分析、精度对比和数据试验等手段,基于计算距离、地形高度和DEM分辨率等因素对模型精度的影响进行了对比和研究.结果表明:距离越近,模型间相对误差越大,极近区应优先选用Prism模型;模型间相对误差随距离衰减情况受地形高度和DEM分辨率等多种因素影响;地形起伏越大,对模型的精度要求越高;DEM分辨率越高,模型精度越好;质量线模型的验算精度不及质量点模型.
The Te map of Anhui and surrounding regions is calculated from EIGEN-6C4 gravity anomalies and ETOPO1 data using the isotropic fan wavelet method.The tectonic structure and geodynamic features of this area are discussed according to the Te map.The results indicate that the Te of Anhui and its surrounding regions varies from 5 to 75 km.The Te values of the Dabie orogenic belt and lower Yangtze region are low,as are the Te values along Tan-Lu fault.High Te values appear at Hehuai basin and Subei basin.The Te distribution mainly reflects the particular characteristics of tectonic structure and geodynamic features of corresponding areas.Most of the seismic activities located in regions with Tc values vary from 10 to 50 km;the spatial distribution of earthquakes indicates that earthquakes tend to occur in regions with low Te or steep Te gradients,further indicating that lithospheres of regions with low Te or steep Tc gradients show higher seismicity rateand are not strong enough to resist deformation.
Isostatic gravity anomaly is considered a sign of the isostatic state of the crust,and studies show that the isostatic state of crust is closely connected with the structural features and seismicity in many areas. In order to investigate the isostatic state of crust and to understand its relation to structural features and seismicity in North China Craton,a new isostatic residual gravity map of North China Craton has been computed using recently released earth gravitational model and digital terrain models.Free-air gravity anomalies of North China Craton have been prepared using the gravity data set of Earth Gravitational Model 2008( EGM2008). EGM2008 data set is believed to be reliable and studies show that EGM2008 free-air gravity anomalies have a general accuracy of 10. 5m Gal( 1m Gal = 10-3cm / s2) in China. The topographic-isostatic corrections were computed based on an Airy-Heiskanen model of local compensation using a strict algorithm based on digital elevation model( DEM),the average crust thickness of the study area was derived from CRUST2. 0,and the topographic and bathymetric data sets were derived from digital elevation model ASTER GDEM 2009( 1arc second resolution) and ETOPO1( 1arc minute resolution) respectively. Topographic-isostatic corrections were then added to the free-air gravity anomalies to determine the isostatic gravity anomalies of North China Craton with a gridding resolution of 5arc minutes. According to the results of calculations,distribution of isostatic gravity anomalies and its relations to structural features and seismicity of North China Craton were discussed. The results indicate that the spatial distribution of isostatic gravity anomalies is remarkably uneven in North China Craton,and isostatic gravity anomalies are very different between different fault blocks. Isostatic gravity anomalies of North China Craton are mainly controlled by neotectonic movements,and are significantly influenced both by lateral variations in crust density and deep structures. The close relation between isostatic gravity anomalies and neo-tectonic movements may imply that there are crustal features that are not compensated regionally and isostatic disequilibrium in North China Craton. The results also indicate that there are some connections between the distributions of isostatic gravity anomalies and seismicity in North China Craton,earthquakes tend to occur around areas with remarkable high or low isostatic gravity anomalies and at transition zones between positive and negative gravity anomalies,and we suggest that special attention should be paid to areas with similar isostatic gravity anomaly characteristics when performing seismic hazard analysis.
在蒙古中部106°E附近布设一条南北走向的重力剖面,首次获得该地区精确的实测重力值,经过数据预处理和改正计算,得到剖面重力异常结果.分析表明,剖面自由空气异常和地形有很强的相关性;剖面布格重力异常变化总体较为平缓,只在戈壁-阿尔泰-曼达尔戈壁加里东区带(GAB)和哈拉加里东区带(HRB)附近发生相对较快的变化,推测这两个区域可能存在较明显的深部构造变化;在蒙古-鄂霍兹克造山带附近,并未发现与板块缝合带相对应的重力异常变化;剖面均衡重力异常以负值为主,多数地区地壳未达到重力均衡状态,剖面附近地震活动和均衡重力异常之间的关系与中国南北地震带北段相关研究结果类似.
GSM–19T proton precession magnetometer is widely used in seismic magnetic survey in recent years and becomes an important instrument in the area of earthquake monitoring. Taking GSM–19T proton magnetometers which are newly-purchased by China Earthquake Administration as the research objects,according to the different performance indexes,the study has conducted tests and systematical analyses for the main technical indicators of these proton magnetometers in different testing methods. The results showed that: GSM–19T proton precession magnetometer is a kind of easy-operating portable magnetometer applying skills such as the digital data acquisition, automatic measurement and higher observation precision. Besides,the good consistency stability of the instrument can also fully meet the requirements of seismic system.
郯庐断裂带对中国东部地区影响重大.已有研究表明,郯庐断裂带新沂-五河段第四纪以来有明显的新活动迹象.本文在前人工作的基础上,围绕郯庐断裂带新沂-五河段开展地震地质调查,在重点地段进行探槽开挖,结合断裂沿线地震活动分析,对郯庐断裂带新沂-五河段活动习性及未来地震危险性等进行了探讨.本文补充的很多第一手资料,可为研究郯庐断裂带新沂-五河段大地震复发规律及地震中长期预测等提供有价值的参考依据.
According to the new geomagnetic vector data about 270 points from Qinghai-Tibet plateau for 2005.0 and 2010.0 China geomagnetic survey,using IGRF11 as the geomagnetic normal field,2D and 3D Structures Spherical Cap Harmonic models of geomagnetic anomalous field of Qinghai-Tibet plateau for ΔF、ΔZ、ΔX、ΔY have been calculated respectively,which are without and with elevation data of Etopo2,by Spherical Cap Harmonic method,and differences between 2D and 3D Structures of geomagnetic anomalous field model have been compared.The results indicate that,1) Two models exists major difference,which is different among magnetic components,ΔF is 100 nT,ΔZ is 80 nT,ΔX is 60 nT,ΔY is 10 nT;2) The effects of elevation change,which is the largest for RMS of ΔZ,and the least for RMS of ΔY,are differences for RMS of ΔZ、ΔX、ΔY respectively.With the increment of truncation order K,the differences between two models become smaller and smaller.3)By comparing ΔZ,ΔF corresponding relations between distribution of the geomagnetic anomalous models and basement structure,it has been found that distribution of geomagnetic anomalous field of 3D model is more fine and reasonable than that of 2D model.
In this paper,based on the geomagnetic survey line from LuAn to YingShan in the Eastern Dabie Orogen,the geomagnetic anomaly are picked up.Assisted by the geology and seismology results,the depth of Curie surface was inverted,and the model of subsurface magnetic structure was built.According to analyzing the curve of the magnetic anomaly and magnetic structure model,it was found that the results reflect strongly the differences among the Hefei Basin,North Huaiyang area,and Eastern Dabie Orogen.In the Eastern Dabie Orogen,the magnetic structure is complex,related to the strong and undulate geomagnetic curve.In the North Huaiyang area,it shows that the geomagnetic structure is imbricate with the weak magnetic anomalies curve.And in the Hefei Basin,the basement appears deeply buried,continuous and uniform,leading to the flat magnetic anomalies curve.Simultaneously,a significant difference of magnetic properties in the area from 6 to 12 km depth in the Huoshan region is noticed.Combined with the earthquake from 1970 and strong historical earthquake,the connection of the seismicity of HuoShan seismic window with the underground structure and field resource is studied,and the dynamic causes of HouShan seismic window is discussed preliminarily.
We build the buffer zones with a 30 km radius from the zero-value-lines of all components of the abnormal geomagnetic field in lithosphere of north China seismic region,and statistical analyze all the MS≥4.0 earthquakes in the buffer zones since 1900.The results indicate that there are close relativities among the epicenter distribution of large earthquakes with MS≥7.0 and the zero-value-lines of geomagnetic declination,north component,east component and vertical component of the abnormal geomagnetic field,and the epicenter distribution has the highest relation to the geomagnetic declination with proportion 83.3%.
为研究“2005.0中国地磁测量”地磁测点空间分布均匀性特征,基于分形理论,介绍了用分形学描述地磁三分量测点空间分布均匀性的方法.该方法将测点存在的区域以不同尺度划分为相等面积的小方块,提取不同方块区域内的三分量测点的数目与尺度,在双对数坐标中进行线性拟合,直线斜率的绝对值即为分形维数Df,并以此作为评价地磁三分量测点空间分散均匀性的指标.通过对“2005.0中国地磁测量”地磁测点均匀性的定量研究,结果表明,中国大陆区域、大陆105°E以东和105°E以西区域地磁三分量测点的分形维数Df各不相同,分别为1.748,1.796和1.609; 105°E以东区域比105°E以西区域的分形维数更接近于其嵌入维数E=2(地球表面),意味着105°E以东区域的地磁三分量测点空间分布更均匀.
<正>在城市活断层探测与地震危险性评价过程中,由于所探测的区域大多位于第四纪松散沉积覆盖区,岩石露头较少,断层痕迹不明显,同时探测的目标断层绝大多数为隐伏断层,因此,地球物理探测成为活断层探测中必不可少的重要手段[1-3]。目前在城市活断层空间定位及活动性评价中采用的地球物理探测手段较多,不同地球物理探测手段具
Based on the results of absolute gravity and mobile gravity observation from 2009 to 2010,the patterns of dynamic gravity change of Anhui Province and its adjacent monitoring areas are given.According to the patterns of dynamic gravity changes,characteristics of gravity change before Anqing earthquake is analyzed preliminarily from gravity field point of view.
<正>郯庐断裂中南段在第四纪以来活断层最发育,历史上曾发生过多次中强以上地震,是中国目前主要地震活动区域之一。汶川8.0级地震发生后,地下流体观测井多测项震后效应在郯庐断裂带中南段部分地区一直持续存在,同时速度结构研究表明该区域存
介绍了基于Web的流动地震监测数据库查询系统的开发背景和目的,描述了数据库查询系统的设计和实现过程.该系统借助Internet/Intranet网络,以B/S(浏览器/服务器)体系结构作为基础架构,采用WAMP集成化软件开发,具有系统加密、数据查询、数据维护、数据导出和资料下载等功能.
Based on three-component geomagnetic data of the seismomagnetic test area in the eastern Dabie orogen, the geomagnetic lithosphere model is established.By making a comparison of the geomagnetic lithosphere model with 2005.0 geomagnetic lithosphere model,the time-space variation features of the geomagnetic lithosphere in the test area are studied.The results show that anomalous changes of the geomagnetic field of lithosphere are present around the Meishan-Longhekou fault and QingShan-XiaoTian fault.
This paper focuses on the geomagnetic field variation produced by lithosphere before and after the M_s = 5.7 Jiujiang-Ruichang earthquake and the M_s = 8.0 Wenchuan earthquake.According to the three-component survey data after these earthquakes and "2005.0 China Geomagnetic Chart" before the earthquakes,lithospheric geomagnetic field models of the two research regions are established.The relations between the earthquakes and different components of the geomagnetic field are preliminarily researched,by comparing and analyzing the variation characteristics of the geomagnetic field (F,D,I,) in the Jiujiang-Ruichang and Wenchuan region.The results show that two earthquake epicenters are located in the vicinity of declination and inclination zero line.After the earthquakes,different components of the geomagnetic field produce different abnormal changes.There are some obvious changes of the geomagnetic field related with the earthquakes in the vicinity of epicenters,and the changes of two earthquake regions have similar regularity.
By using the four-phases geomagnetic vector data before and after the M_s5.7 Jiujiang-Ruichang earthquake, we established the surface spline models of geomagnetic horizontal component in four periods.By comparing the above four models, we traced evolution processes of geomagnetic horizontal component before and after the M_s5.7 Jiujiang-Ruichang earthquake and analyzed the relations between the occurrence and attenuation of geomagnetic anomalies and the earthquake.
By use of mobile gravity data in the northern area of Anhui province during 2005-2007,the dynamical gravity variation features before and after Dingyuan ML4.7 earthquake are analyzed.The results show that Dingyuan earthquake occurred in the high gradient zone of gravity variation near the area with high negative gravity variation.Before the earthquake,the gravity values around epicenter decreased,at the same time the high gravity gradient belt came into being along active faults;after the earthquake,the gravity field takes on relax and resumption.The dynamic gravity variations clearly reflect the features of source precursor caused by stress field of seismic focus.