NUMERICAL STUDY ON ENVIRONMENTAL IMPACTS OF THE THIRD SHANGHAI SEWERAGE PROJECT

1 INTRODUCTION Shanghai, Chinas largest metropolitan area with a population of about 14 million, is situated at the mouth of the Yangtze River, and bordered with the East China Sea to the east, Hangzhou Bay to the south, and the provinces of Zhejiang and Jiangsu to the west. It is a region with intensive distribution of rivers and lakes. The good geographic location and natural conditions have provided the city with superiority in its social and economic center and port city of the co…     

STUDY ON RECHARGE OF GROUNDWATERS AND INTERRELATIONS BETWEEN VARIOUS WATERS BY MEANS OF ENVIRONMENTAL ISOTOPES

ＳＴＵＤＹＯＮＲＥＣＨＡＲＧＥＯＦＧＲＯＵＮＤＷＡＴＥＲＳＡＮＤＩＮＴＥＲＲＥＬＡＴＩＯＮＳＢＥＴＷＥＥＮＶＡＲＩＯＵＳＷＡＴＥＲＳＢＹＭＥＡＮＳＯＦＥＮＶＩＲＯＮＭＥＮＴＡＬＩＳＯＴＯＰＥＳ￥ＳｅｖｉｌＧｕｌｅｒ；ＥｒｇｕｎＤｅｍｉｒｏｚ（Ｓｐｅｃ...     

NEW TRENDS IN THE NUMERICAL STUDY OF COASTAL SEDIMENTARY PROCESSES

1 INTRODUCTION The conventional method for numerical study of coastal sedimentary processes has been based on the solution of a phase-averaged wave equation, the steady nearshore current equations, the continuity equation for sediment, and an empirical net sediment transport equation. This strategy has advantages in meso-scale problems but it loses accuracy in the vicinity of a structure, where local scour usually occurs. To have a good representation of both meso-scale sediment transport …     

A STUDY OF THE RECENT TECTONIC ACTIVITY IN JIANGSUSHANDONG-ANHUI AREA

In this paper two vertical deformation maps have been drawn, based on the accurate leveling data of 1950-1980, in Jiangsu-Shandong-Anhui area. Along combining with neotectonic, geological basis and crustal deformation data, an analysis of the recent tectonic activity in the studied area has been made,and some conclusions have been drawn as follows: (1) The Tancheng-Lujiang fault zone across the studied area is the key tectonic element in recent tectonic activity, and the crustal deform...更多ation is controlled by the fault zone. (2) A study of the two deformation maps shows that the section of the Tancheng-Lujiang fault zone in this area is a creeping section, but both ends of the section are locked parts. The stress concentration ought to be accumulated in these parts. (3) Difference between the two maps suggests that the activity character of the fault zone is right lateral slip during 1950 to 1970, but reverse activity has occurred since 1982 to 1983. This suggests that the most intense earthquake in East 还原 【Abstract】 In this paper two vertical deformation maps have been drawn, based on the accurate leveling data of 1950-1980, in Jiangsu-Shandong-Anhui area. Along combining with neotectonic, geological basis and crustal deformation data, an analysis of the recent tectonic activity in the studied area has been made,and some conclusions have been drawn as follows: (1) The Tancheng-Lujiang fault zone across the studied area is the key tectonic element in recent tectonic activity, and the crustal deformation is controlled by the fault zone. (2) A study of the two deformation maps shows that the section of the Tancheng-Lujiang fault zone in this area is a creeping section, but both ends of the section are locked parts. The stress concentration ought to be accumulated in these parts. (3) Difference between the two maps suggests that the activity character of the fault zone is right lateral slip during 1950 to 1970, but reverse activity has occurred since 1982 to 1983. This suggests that the most intense     

THE ACTIVITY OF A FAULT ZONE INFERRED FROM MICROSTRUCTURAL STUDY OF DEFORMED ROCKS

The neotectonic activity of a minor fault zone on the Southwest margin of Yangzi platform has been studied based on analysis and comparison of the microstructural features of deformed rocks within and outside the fault zone.According to thermoluminesccne dating it is proposed that after Pleistocene there would be more than one active period of the fault.The strees of the main period was up to 700 bars.The strain and stress of the rocks within the fault during the faulting process were significantly greater than those in the rocks outside the fault     

INTRODUCTION ON THE STUDY OF ASSESSMENT OF THE SEISMIC HAZARDS AND SEISMIC INTENSITY ZONATION IN SOUTH SHANDONG PROVINCE

Reassessment on the seismic hazards and carrying out a seismic intensity zonaton for SouthShandong Province have become an important project which is jointly sponsored and organized byState Seismological Bureau and the Science and Technology Commission of Shandong Province. Itaims to identify the areas with strong historical earthquakes and highly seismic intensity that willgreatly benefit future economic development and planning.     

EXPERIMENTAL STUDY ON THE COHERENT STRUCTURE OF THE TURBULENT BOUNDARY LAYER IN OPEN-CHANNEL FLOW

1 INTRODUCTION The coherent structure of turbulence is the most important discovery of turbulence studies in the last several decades. The coherent structure is a joint spatial state (Liang, 1999). In this space, there exist all kinds of motions that are organized and related. Namely, strip structures, large vortical structures, and other organizing flows are present. In 1932, researchers found that turbulence wasn抰 a fully random phenomenon and came to realize that the repeated emergen…     

STUDY ON THE SIMILARITY OF SEDIMENT DEPOSITION IN DISTORTED SCALE MODEL

ＳＴＵＤＹＯＮＴＨＥＳＩＭＩＬＡＲＩＴＹＯＦＳＥＤＩＭＥＮＴＤＥＰＯＳＩＴＩＯＮＩＮＤＩＳＴＯＲＴＥＤＳＣＡＬＥＭＯＤＥＬ￥ＬＵＸｉｕｚｈｅｎＱ；ＰＥＮＧＲｕｎｚｅ（ＳｅｎｉｏｒＥｎｇｉｎｅｅｒｓ（Ｈｉｇｈｇｒａｄｅ），ＩｎｓｔｉｔｕｔｅｏｆＷａｔｅ...     

RESUSPENSION OF FINE SEDIMENT IN RESERVOIRS - A CASE STUDY OF THE LOWER INN RIVER

1 THE LOWhR unR INNThe Inn river has its source in the alPine region of the GraubUnden canton of Switzerand. ThecatChment area of about 260(X} kIn2 includes mountains of the central Alpes up to 40(X) m. The river runs5l7 km thrOugh the countries of SwitZerand, Austria and Germany on itS way into the Danube mver. Thedischarge of the river at its mouth in the city of Passau is mainly infiuenced by the snow melt in themountainous catchment area and vches between apProx. 200 m3ls durin…     

PAYING GREAT ATTENTION TO THE STUDY OF SOFT SCIENCE,AND RUNNING THE COLUMN OF“SOFT SCIENCE”WELL

The column of Seismic“soft science”appears today.It deserves congra-tulation.The column is the field to research,explore.apply and exchangethe achievements of soft science for leaders and administrative workers atall levels in our seismic system.Running this column well,it will behelpful to improving our art of scintific leadership and management anddecreasing faults of decision,thus speeding up the development of sersmiccause.     

RESEARCHES ON ENVIRONMENTAL CHANGES AND WATER AND SEDEMENT TRANSPORT OF THE YELLOW RIVER BASIN

ＲＥＳＥＡＲＣＨＥＳＯＮＥＮＶＩＲＯＮＭＥＮＴＡＬＣＨＡＮＧＥＳＡＮＤＷＡＴＥＲＡＮＳＥＤＥＭＥＮＴＴＲＡＮＳＰＯＲＴＯＦＴＨＥＹＥＬＬＯＷＲＩＶＥＲＢＡＳＩＮＹＥＱｉｎｇｃｈａｏ２Ｉ．ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｍａｊｏｒｐｒｏｊｅｃｔ″Ｒｅｓｅ...     

NEWS OF THE SINO－GERMAN COOPERATION RESEARCH ACTIVITIES IN THE STUDY ON UNSTEADY SEDIMENT TRANSPORT

ＮＥＷＳＯＦＴＨＥＳＩＮＯ－ＧＥＲＭＡＮＣＯＯＰＥＲＡＴＩＯＮＲＥＳＥＡＲＣＨＡＣＴＩＶＩＴＩＥＳＩＮＴＨＥＳＴＵＤＹＯＮＵＮＳＴＥＡＤＹＳＥＤＩＭＥＮＴＴＲＡＮＳＰＯＲＴ￥／／ＳｕｐｐｏｒｔｅｄｂｙｔｈｅＮａｔｉｏｎａｌＮａｔｕｒａｌＳｃｉｅｎｃｅ...     

STATE SEISMOLOGICAL BUREAU CONVENES THE IST WORKING CONFERENCE OF THE WESTERN YUNNAN EARTHQUAKE PREDICTION STUDY AREA

The State Seismological Bureau of China (SSB) convened the 1st working conference of the Study Area from October 20 to 25, 1983 at the Tuanshan headquarters of the Western Yunnan Earthquake Prediction Study Area (WYEPSA), Dali City, Yunnan Province. Attending the conference were 103 comrades, some were in charge of the professional work, others scholars,experts or key members in the seismological work. Some attendants were from     

EFFECTS OF RIVER ICE ON STAGE-DISCHARGE RELATIONSHIPS——A CASE STUDY OF THE YELLOW RIVER

Using field observations at four gauging stations along the Inner Mongolia Reach of the Yellow River in China, this paper explores effects of the ice on the hydraulics of this river reach for four different conditions, namely: under open channel flow, during ice-running period, the ice-covered period, and the river break-up period. The rating curves were found to be well recognized under open channel situations, but were sometimes poorly defined and extremely variable under ice conditions. The results also show that the water level is insensitive to flowing ice prior to freeze-up. However, significant, but hardly surprising, variations were observed during ice-covered conditions. The rating curves for both the ice covered condition and river ice breakup period are developed and some related hydraulic issues are examined. Additionally, the impacts of the ice accumulation and associated riverbed deformation during ice period on the rating curves are discussed.     

ASSESSMENT OF ENVIRONMENTAL QUALITY FOR EARTHQUAKE RISK IN BEIJINGAREA──THE APPLICATION OF GEOGRAPHIC INFORMATION SYSTEM（GIS）

ＡＳＳＥＳＳＭＥＮＴＯＦＥＮＶＩＲＯＮＭＥＮＴＡＬＱＵＡＬＩＴＹＦＯＲＥＡＲＴＨＱＵＡＫＥＲＩＳＫＩＮＢＥＩＪＩＮＧＡＲＥＡ──ＴＨＥＡＰＰＬＩＣＡＴＩＯＮＯＦＧＥＯＧＲＡＰＨＩＣＩＮＦＯＲＭＡＴＩＯＮＳＹＳＴＥＭ（ＧＩＳ）ＨａｎＺｈｕｊｕｎ；Ｊｉａ     

MODELING STUDY ON SEDIMENTATION CONFIGURATION IN FRONT OF THE DAM AND IN THE PRESSURE CONDUIT OF BOTTOM OUTLETS BY FLUME EXPERIMENT

I.INTRODUCTIONReseri,oirsonoverloadedriverswillreachthestateofrelativeequilibriumwithcontinuousdevelopmentofsedimentation.Insuchcase,thereisdePOsitinfrontofthedam.Thereforethesiltpressureonthedambodyisconsiderablylarge.Sedimentationelevationinfrontofthedamisoneofthefactorsofcalculatingthesiltpressure.Inaddition,tokeeplong-termworkingstorageinreservoif,itisnecessarytoinstallbottomoutlets.Asthereisapressureconduitinfrontoftheoperatinggateofthebottomoutlet,thesedimelltenteredtheconduitwill…     

EXPERIMENTAL STUDY ON SEDIMENTATION IN EXCAVATED TRENCH UNDER THE ACTION OF TIDAL FLOW

INTRODUCTIONThe planned outer ring road in Shanghai City crosses the Huangpu mver, a tribuop of the YangtzeXiver Veq near the river mouth. The sinldng method is reconunended in constIUchon of submergedcrossing-river tonnel which is 725m long and has a transversal section of M.6InX8.75m. For the design ofthe consAnction scheme, sediment dePosihon the in the excavated trench serves as an impoftaIltparameter. Physical mode exPeriments were then conducted to inveshgate the rate of sedim…     

THREE DIMENSIONAL MATHEMATICAL MODEL OF SEDIMENT TRANSPORT IN ESTUARINE REGIONS-A CASE STUDY OF THE HAIHE RIVER MOUTH

The paper presents the 3D finite element simulation of tidal flow and sediment transport in the estuarine region of the Haihe river. The proposed model adopts sigma-transformation of the hydrodynamic and sediment transport equations. The hydrodynamic and sediment transport models are verified in case of a simple test problem for which analytical solutions are available. Finally the models are applied to muddy Haihe river estuary of North China and it is claimed that hydrodynamic and sediment…