2011 Vol. 17, No. 4

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THEORETICAL MODEL ABOUT FRACTURE POROSITY, PERMEABILITY AND STRESS FIELD IN THE LOW-PERMEABILITY SANDSTONE
FENG Jian-wei, DAI Jun-sheng, LIU Mei-li
2011, 17(4): 303-311.
Abstract (315) HTML (136) PDF (1035KB)(15)
Abstract:
Aiming at low-permeability sandstone, based on the principles of geological mechanics, using relationship between fracture parameters and stress field as a bridge, on the premise of reasonable preference of fracture criteria, through methods of tests and theoretical derivation, this paper establishe...
THEORETICAL DEVELOPMENT OF MAXIMUM EFFECTIVE MOMENT CRITERION
TONG Heng-mao, WANG Ming-yang, HAO Hua-wu, ZHAO Dan
2011, 17(4): 312-321.
Abstract (187) HTML (61) PDF (1082KB)(11)
Abstract:
Theoretical analysis shows that the Maximum Effective Moment, which cause preexisting cleavage or bedding to rotate, is related to the direction of pre-existing cleavage or bedding, and the Maximum Effective Moment Criterion (Meff=0.5(σ1-σ3) Lsin2αsinα, simplified as MEMC) proposed by Zheng et al is...
CHARACTERISTICS OF TANCHENG-LUJIANG FAULT AND ITS ROLE ON BASIN CONTROLLING
LIN Zong-man
2011, 17(4): 322-337.
Abstract (564) HTML (242) PDF (1870KB)(18)
Abstract:
Tancheng-Lujiang Fault is a large scale fault belt in the east of China which has a long history of study and many achievements have been obtained.Based on the studies of predecessors, this paper advanced some new opinions as such:large scale strike-slip displacement of the fault may not exit; it fo...
SEDIMENTARY CHARACTERISTICS, BASIN TYPE AND DYNAMIC MECHANISMS DURING LATE TRIASSICJURASSIC IN SOUTHEASTERN HUNAN PROVINCE
BAI Dao-yuan, ZHONG Xiang, JIA Peng-yuan, LIU Yao-rong, HUANG Wen-yi
2011, 17(4): 338-349.
Abstract (231) HTML (194) PDF (1349KB)(18)
Abstract:
There are different standpoints such as para-foreland basin and down-faulted basin about the Late Triassic-Jurassic basin in southeastern Hunan.Distribution of the sediments and lithofacies character show information as follows:there existed marine and marine-terrigenous sedimentary environment duri...
DIAGENETIC SEALING CHARACTERISTICS OF FAULTING ZONE AND ITS APPLICATION
WU Kong-you, LI Ji-yan, CUI Shi-ling, YANG Hai-bo, LIU Zhen-yu
2011, 17(4): 350-360.
Abstract (248) HTML (128) PDF (1236KB)(12)
Abstract:
The diagenetic types which influence the fault sealing properties mainly include packing action, compaction, and cementation.The more shale contents of filler, the lower porosity and permeability of faulting zone, and the less possibility to seal.Packing action plays a vital role in control of the c...
CHANGE OF THE PALEOCLIMATE AND EVOLUTION OF THE LAKE DURING PLIOCENE-EARLY PLEISTOCENE IN ZANDA BASIN, TIBET
HAN Jian-en, YU Jia, ZHU Da-gang, MENG Xian-gang, SHAO Zhao-gang, YANG Chao-bin
2011, 17(4): 361-372.
Abstract (354) HTML (210) PDF (1258KB)(15)
Abstract:
According to the pollen combination analysis, paleomagnetic chronology, electron spin resonance (ESR) age of fluviolacustrine facies deposition and lithology characteristics, this paper discussed the relationship between paleoclimate and the evolution of Zanda paleolake during Pliocene-early Pleisto...
ALOS INSAR COSEISMIC DEFORMATION OF YUTIAN EARTHQUAKE AND INITIAL ANALYSIS FOR GEOLOGY
XU Dan, YAO Xin, CHEN Qi, SUN Yue, LIU Yuan, LIU Feng-min
2011, 17(4): 373-380.
Abstract (207) HTML (132) PDF (1238KB)(10)
Abstract:
A Ms 7.3 scale earthquake occurred in Yutian area, Xinjiang Uygur Autonomous Region, China, on March 21, 2008 is the biggest earthquake after the Ms 8.1 scale earthquake happened in Kunlun Mountain, November, 2001.Earthquake is concentrated reflection of tectonic activity, it can be accompanied by a...
NUMERICAL STUDY ON THE HAZARD EFFECT OF A BUILDING NEAR THE FAULT PRODUCED BY THE WENCHUAN EARTHQUAKE
SU Sheng-rui, ZHANG Yong-shuang, HAO Li-li, LI Song
2011, 17(4): 381-387, 409.
Abstract (298) HTML (139) PDF (1535KB)(6)
Abstract:
Particular destroy phenomena occurred in the main building of Shuimo Silicon Company near the fault produced by the 2008 Wenchuan earthquake. On the basis of site investigation, two-dimensioanl finite element model is set up, and the hazard effect of a building caused by the faulting is simulated. T...
RISK ASSESSMENT OF GEOHAZARDS BY USING GIS IN GANGU COUNTY, GANSU PROVINCE
WANG Lei, ZHANG Chun-shan, YANG Wei-min, SUN Wei-feng, QIU Zhan-lin, WANG Tao
2011, 17(4): 388-401.
Abstract (449) HTML (248) PDF (1350KB)(20)
Abstract:
Based on detailed investigation of geo-hazards in Gangu County, the authors made evaluation zoning of geo-hazards risk assessment in Gangu County by using the combined qualitative analysis and quantitative evaluation on the GIS platform. On the basis of comprehensive analysis of the present landslid...
DEFORMATION MONITORING AND STABILITY ANALYSIS OF AN UNSTABLE SLOPE IN CHONGQING CITY
CHEN Xiao-yang, ZHANG Hong-yang, JI Dong, MAO Shi-long
2011, 17(4): 402-409.
Abstract (214) HTML (91) PDF (1026KB)(10)
Abstract:
The unstable slope is located in the cantonal of Chongqing City, where large foundation excavation will be carried out in the influenced scope. Analysis on stability must be taken for construction safety. On the basis of previous studies, combined with field investigation, the geological environment...

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