2006 Vol. 12, No. 2

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DEVELOPING LI SIGUANG'S “SAFETY ISLAND” THOUGHT AND MAKING SERIOUS EVALUATION AND RESEARCH ON REGIONAL CRUSTAL STABILITY IN AREAS OF ENGINEERING WORKS
YI Ming-chu, HU Hai-tao, YIN Yue-ping, PENG Hua
2006, 12(2): 105-118.
Abstract (229) PDF (719KB)(9)
Abstract:
In order to develop Li Siguang's academic thoughts,this paper reviews the creation process of Li Siguang's "safety island" thought,briefly introduces the development process of the thought from "safety islands and stable masses" to "regional crustal stability" and summarizes the main factors and met...
HUGE DISASTER RISK AND PREVENTION IN CHINA
ZHANG Ye-cheng, MA Zong-jin, GAO Qing-hua, ZHANG Li-hai, LIU Feng-min
2006, 12(2): 119-126.
Abstract (253) PDF (465KB)(9)
Abstract:
Huge disasters refer to the natural disasters that cause the huge loss of life and property and have serious impact on social and economic development.Huge disasters in China include extraordinary floods,large earthquakes,exceedingly large storm tides and sustained droughts over large tracts.Huge di...
DANGER ASSESSMENT OF EARTHQUAKE-INDUCED GEOLOGICAL DISASTERS IN CHINA
LIU Feng-min, ZHANG Li-hai, LIU Hai-qing, ZHANG Ye-cheng
2006, 12(2): 127-131.
Abstract (276) PDF (267KB)(12)
Abstract:
Earthquake-induced secondary geological disasters include avalanches,landslides,caving-in,ground cracks and liquefaction of sand.The earthquakes of magnitudes > 5 and intensity > VI may lead to occurrence of various scales of geological disasters.The higher the magnitude and intensity are,the ...
CHARACTERISTICS OF SEGMENTS OF SURFACE RUPTURES OF STRONG EARTHQUAKES ALONG THE EAST KUNLUN ACTIVE FAULT ZONE
JIANG Wa-li, XIE Xin-sheng
2006, 12(2): 132-139.
Abstract (296) PDF (432KB)(21)
Abstract:
The East Kunlun active fault zone is an up to 1000 km long active fault zone in the interior of the Qinghai-Tibet Plateau.Four strong earthquakes of MS ≥ 7.0 have occurred along the fault zone during the past 100 years.The latest one was the Kunlun Mountain Pass earthquake of MS=8.1 in 2001.The pape...
NUMERICAL MODELING OF THE PRESENT TECTONIC STRESS FIELD IN THE CENTRAL QINGHAI-TIBET PLATEAU
WANG Lian-jie, WU Zhen-han, WANG Wei, SUN Dong-sheng
2006, 12(2): 140-149.
Abstract (280) PDF (379KB)(25)
Abstract:
Considering crustal rocks as viscous fluids,the tectonic stress field and velocity field of the central segment of the Qinghai-Tibet Plateau are modeled by using the finite element method.The results of modeling indicate that the Qinghai-Tibet Plateau is generally displaced toward the north and east...
LANDSLIDE STABILITY ANALYSIS BY THE 3D ELASTIC PLASTIC CONTACT FINITE ELEMENT ALGORITHM
XU Jian-cong, SHANG Yue-quan, TIAN Xiao-juan
2006, 12(2): 150-159.
Abstract (276) PDF (607KB)(10)
Abstract:
In order to evaluate accurately the stability of slopes of rock debris and soil,the integral stability coefficient of a debris and soil landslide was computed and its stability was analyzed through the data collection,arrangement and analysis,site engineering-geological investigation and exploration...
FRACTURE SYSTEM AND ITS EFFECT ON THE HYDROPOWER PROJECT IN THE GOUPITAN AREA, GUIZHOU
CHEN Wen-li, HOU Guang-jiu, YIN Chun-ming, XIANG Neng-wu, WANG Ling-zhan
2006, 12(2): 160-165,159.
Abstract (223) PDF (380KB)(33)
Abstract:
Fractures in large-scale engineering works such as dams and tunnels have long gained attention because they concern safety problems of engineering works such as the strength of rock masses.There mainly occur carbonate rocks with minor clastic rocks at the dam site of the Goupitan Hydropower Station,...
3D NUMERICAL SIMULATION OF THE ANCHOR EFFECT OF PRESTRESSED CABLES AND ITS ENGINEERING APPLICATION
ZHANG Si-feng, ZHOU jian, SONG Xiu-guang, LI Shu-cai
2006, 12(2): 166-173.
Abstract (353) PDF (571KB)(20)
Abstract:
Prestressed cable anchor technology has been widely used in many fields of geotechnical reinforcement engineering.However,the research on the reinforcement mechanism of prestressed anchorage is still at an exploratory stage.Based on the fast Lagrangian analysis method(FLAC-3D),the stress,deformation...
ANALYSIS OF THE FORMATION SYSTEM OF THE PRESENT TECTONIC STRESS FIELD IN THE HEAD AREA OF THE THREE GORGES RESERVOIR
LI Xi-guang, YAO Yun-sheng, ZENG Zuo-xun, LIU Li-lin
2006, 12(2): 174-181.
Abstract (242) PDF (495KB)(11)
Abstract:
The present tectonic stress field in the head area of the Three Gorges reservoir was systematically analyzed and verified in the geological,seismological,deformation and in situ stress contexts and checked by numerical modeling.The authors think that the present tectonic stress field in the study ar...
HYDROFRACTURING IN-SITU STRESS MEASUREMENTS OF THE WATER DIVERSION AREA IN THE FIRST STAGE OF THE SOUTH-NORTH WATER DIVERSION PROJECT (WESTERN LINE)
PENG Hua, CUI Wei, MA Xiu-min, LI Jin-suo
2006, 12(2): 182-190.
Abstract (221) PDF (405KB)(19)
Abstract:
This paper introduces the principle and method of hydrofracturing insitu stress measurement and its applications in the south-north water diversion project of the western line.The magnitude and direction of the principal stress were measured along the line of the water diversion project and their mu...
MEASUREMENTS OF IN-SITU STRESS IN THE PUSHIHE HYDROPOWER STATION, LIAONING
WU Man-lu, LI Guo-jun, LIAO Chun-ting, DONG Cheng
2006, 12(2): 191-196.
Abstract (286) PDF (269KB)(7)
Abstract:
In-situ stress measurements were made in a survey tunnel using the hollow inclusion stress gauge in order to gain knowledge of the present stress state of the Pushihe hydropower station.A total of five in-situ stress-measuring sites were deployed and many measurements were made at each measuring sit...
IN SITU STRESS MEASUREMENT AND ITS APPLICATION IN THE PRE-FEASIBILITY STUDY OF AN UNDERGROUND OIL RESERVOIR IN CHINA
HOU Yan-he, SUN Wei-feng, CHEN Qun-ce, WANG Bao-jun, CHEN Shao-nan
2006, 12(2): 197-202.
Abstract (198) PDF (238KB)(12)
Abstract:
Hydrofracturing in situ stress measurements were used to determine in situ stress states of two drill holes for the pre-feasibility study of an underground reservoir at an engineering site in China.Both the maximum and minimum horizontal principal stresses(SH and Sh) are by far greater than the vert...
CAUSE ANALYSIS AND QUANTITATIVE ZONATION OF MUDFLOW HAZARDS ALONG THE RAWU-LUNANG SECTION, SICHUAN-TIBET HIGHWAY
DING Ji-xin, YANG Zhi-fa, SHANG Yan-jun
2006, 12(2): 203-210,226.
Abstract (268) PDF (540KB)(10)
Abstract:
Unique geological,geomorphic,hydrological and climatic conditions cause various kinds of mountainous hazards,especially very serious mudflow hazards,to occur frequently in the Rawu-Lunang section,Sichuan-Tibet Highway.On the basis of previous research and the authors' field investigations,it is thou...
RISK EVALUATION OF AVALANCHE, LANDSLIDE AND MUDFLOW HAZARDS IN THE UPPER REACHES OF THE YELLOW RIVER
ZHANG Chun-shan, LI Guo-jun, ZHANG Ye-cheng, MA Yin-sheng
2006, 12(2): 211-218.
Abstract (306) PDF (488KB)(12)
Abstract:
Based on field geological investigations of avalanches,landslides and mudflows in the upper reaches of the Yellow River,the authors determined the main influence factors and index system of the hazard risk evaluation and made risk evaluation with the county(city or qi) as a unit.There are a total of...
FORMATION CONDITIONS OF SLOPE TYPE MUDFLOW IN NINGSHAAN COUNTY, SOUTHERN SHAANXI,AND ITS INDUCING MECHANISM
YANG Wei-min, WU Shu-ren, ZHANG Yong-shuang, ZHANG Chun-shan, SUN Wei-feng
2006, 12(2): 219-227.
Abstract (314) PDF (595KB)(10)
Abstract:
The occurrence of slope mudflow is a process in which a landslide first occurs and then rapidly changes into mudflow.It has some properties of landslide and mudflow concurrently.The slope mudflow around the seat of Ningshaan County occurs on a steep slope of Middle Devonian strata.The eluvial soils ...
MAIN GEOHAZARD TYPES AND THEIR OCCURRENCE CHARACTERISTICS ALONG THE YUNNAN-TIBET RAILWAY IN NW YUNNAN
GUO Chang-bao, LEI Wei-zhi, ZHANG Yong-shuang, LIU Jing-ru
2006, 12(2): 228-235.
Abstract (223) PDF (692KB)(13)
Abstract:
The Yunnan-Tibet Railway in NW Yunnan is located at the transitional position of the southeastern Qinghai-Tibet Plateau to Yunnan-Guizhou Plateau,where landforms are complex,valleys are deeply incised,neotectonic movement is very intense and earthquakes occur frequently.The precipitation in the area...
A NEW METHOD FOR CHOOSING ZONATION INDICATORS OF MUDFLOW DANGER DEGREES BASED ON THE ROUGH SET THEORY
KUANG Le-hong, XU Lin-rong, LIU Bao-shen, YAO Jing-cheng
2006, 12(2): 236-242.
Abstract (225) PDF (311KB)(6)
Abstract:
In view of the deficiency in methods for choosing zonation indicators of mudflow danger degrees,a new method for choosing zonation indicators of mudflow danger degrees is put forward based on the rough set theory in this paper.Firstly,according to the environmental conditions of forming mudflows,an ...
RAILWAY LOCATION IN A MOUNTAINOUS ENVIRONMENT IN AREAS OF ACTIVE STRUCTURES
QING San-hui, HUANG Run-qiu, LI Dong, JIANG Liang-wen
2006, 12(2): 243-251.
Abstract (173) PDF (515KB)(10)
Abstract:
Location of line in a mountainous environment in which active structures are well developed is a major engineering-geological problem concerned in railway and highway construction.In light of a study of the location of the Yu-Meng section of the newly built Kun-He Railway in southwestern China,the p...
TIME EFFECT ANALYSIS OF ZONAL DISINTEGRATION OF HIGH IN-SITU STRESS SURROUNDING ROCKS AND STUDY OF RELEVANT PARAMETERS BASED ON THE CREEP INSTABILITY THEORY
LI Ying-jie, PAN Yi-shan, ZHANG Meng-tao
2006, 12(2): 252-260.
Abstract (183) PDF (411KB)(12)
Abstract:
It takes some time to form the phenomenon of zonal disintegration of surrounding rocks with high in situ stress,but the time needed is not too long.The creep theory is used to analyze the time effect of zonal disintegration of rocks and deduce the constitutive equation and creep equation of the impr...
COASTAL EROSION AND ITS MAIN CAUSE IN THE QINHUANGDAO AREA
ZHANG Li-hai, LIU Feng-min, LIU Hai-qing, ZHANG Ye-cheng, YU Dao-yong
2006, 12(2): 261-264,273.
Abstract (337) PDF (221KB)(12)
Abstract:
The paper analyzes coastal erosion and silting up in the Qinhuangdao area and discusses the constraints on coastal erosion and silting and their harm to coastal resources and environment based on information obtained from on-site investigation.The main conclusions are as follows:in the past 50-odd y...
SOME PROGRESS IN THE STUDY OF SUDDEN GEOLOGICAL HAZARDS
WU Shu-ren
2006, 12(2): 265-273.
Abstract (256) PDF (539KB)(9)
Abstract:
The whole world and researchers engaged in geological hazard prevention and control were shocked by the mudflow hazard occurring in Southern Leyte,central Philippin,e on February 17,2006,which caused more than 1000 deaths and missing.In order to introduce the status quo and progress in the study of ...
APPLICATION OF GEOGRAPHICAL INFORMATION SYSTEM (MAPGIS) IN GEOLOGICAL MAP PRODUCTION
LI Yue-hui
2006, 12(2): 274-278.
Abstract (267) PDF (548KB)(8)
Abstract:
With the wide application of the computer technique in various areas,the map,as the final form of expression of the geological research results,becomes more and more important.This paper introduces the application of the geographical information system(MapGis) in geological map production.By using M...

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