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Editor Work1999 Vol. 7, No. 3
Previous Issue
1999, 7(3): 195-199.
Abstract
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The tasks and the future of engineering geology are emphasized and the direction of its development is clarified in the paper.
The tasks and the future of engineering geology are emphasized and the direction of its development is clarified in the paper.
1999, 7(3): 200-206.
Some basic problems related directly to the landslide prediction are discussed in the paper,such as the classification of landslide predictions and their definitions, the forecast parameters and the determination of their monitoring sites, the analysis and treatment of saltation displacement in deformation curves as well as the quantitative determination of slope deformation stages.
Some basic problems related directly to the landslide prediction are discussed in the paper,such as the classification of landslide predictions and their definitions, the forecast parameters and the determination of their monitoring sites, the analysis and treatment of saltation displacement in deformation curves as well as the quantitative determination of slope deformation stages.
1999, 7(3): 207-212.
This paper deals with the atomized rain and the process of slope stability induced by it. The mechanism for the slope instability is simulated and analyzed.
This paper deals with the atomized rain and the process of slope stability induced by it. The mechanism for the slope instability is simulated and analyzed.
1999, 7(3): 213-217.
According to the deformation features of toppling slope a mechanical mechanism for the toppling deformation of slope is analyzed in this paper. The influence of structural face interval and mechanical parameters on deformation of rock mass are studied on the basis of this analysis. By using distribution features of stresses, displacements, and yield zones in rock mass, the stability problem of anti inclined slope is discussed .
According to the deformation features of toppling slope a mechanical mechanism for the toppling deformation of slope is analyzed in this paper. The influence of structural face interval and mechanical parameters on deformation of rock mass are studied on the basis of this analysis. By using distribution features of stresses, displacements, and yield zones in rock mass, the stability problem of anti inclined slope is discussed .
1999, 7(3): 218-223.
After excavation of the dam foundation of Fenhe Reservoir 2,a dislocation of rock mass along bedding fracture plane is found.The dislocation, with displacements of 1 cm to 7 cm,spread on almost the whole dam poundation which is composed of hard dolomite of Cambrian system.In this paper,the dislocation of rock mass at the dam foundation is analyzed and studied. The dislocation is a result ofground stress release after the excavation of the dam foundation.
After excavation of the dam foundation of Fenhe Reservoir 2,a dislocation of rock mass along bedding fracture plane is found.The dislocation, with displacements of 1 cm to 7 cm,spread on almost the whole dam poundation which is composed of hard dolomite of Cambrian system.In this paper,the dislocation of rock mass at the dam foundation is analyzed and studied. The dislocation is a result ofground stress release after the excavation of the dam foundation.
1999, 7(3): 224-230.
In this paper, functional construction, development tendency, and several key problems of hardware technique in automatic monitoring system on geological engineering project are discussed. The authors put stress on the key problems of hardware technique in development of automatic monitoring system on geological engineering project. A example of automatic monitoring system setup for a large hydropower station slope mainly by the authors is introduced. For the system a lot of difficult problems were solved, such as thunder shock protection both in monitoring instruments and in the installed transducers, high precision modulation of special transducer signal in a very small module, etc.
In this paper, functional construction, development tendency, and several key problems of hardware technique in automatic monitoring system on geological engineering project are discussed. The authors put stress on the key problems of hardware technique in development of automatic monitoring system on geological engineering project. A example of automatic monitoring system setup for a large hydropower station slope mainly by the authors is introduced. For the system a lot of difficult problems were solved, such as thunder shock protection both in monitoring instruments and in the installed transducers, high precision modulation of special transducer signal in a very small module, etc.
1999, 7(3): 231-236.
Main causes and countermeasures for prevention and control of anthropogenic geologic disasters are discussed in the paper. The author considers there are three main causes for occurrence of anthropogenic geologic disasters: (1) The geological situation (backgraund) at the engineering area did not be clearly understood; (2) Unreasonable design; (3) Low quality of construction. The author also points out that the anthropogenic geologic disasters can be avoided or mitigated by means of standardization of human activities.
Main causes and countermeasures for prevention and control of anthropogenic geologic disasters are discussed in the paper. The author considers there are three main causes for occurrence of anthropogenic geologic disasters: (1) The geological situation (backgraund) at the engineering area did not be clearly understood; (2) Unreasonable design; (3) Low quality of construction. The author also points out that the anthropogenic geologic disasters can be avoided or mitigated by means of standardization of human activities.
1999, 7(3): 237-242.
The peoples resettlement project is a key part of the Three Gorges Project on the Yangtze River. The geological problem in the new town of Wushan County is a current focus of attention and contention in scientific circle, and is also a generally concerned problem in the Three Gorges Reservoir region. In the paper a mechanism for occurrence of landslides is proposed. It shows that the landslide underwent the former slide stage and the latter reworking stage. This mechanism provides a theoretical basis for solution of a great deal of problems in the Three Gorges Reservoir region.
The peoples resettlement project is a key part of the Three Gorges Project on the Yangtze River. The geological problem in the new town of Wushan County is a current focus of attention and contention in scientific circle, and is also a generally concerned problem in the Three Gorges Reservoir region. In the paper a mechanism for occurrence of landslides is proposed. It shows that the landslide underwent the former slide stage and the latter reworking stage. This mechanism provides a theoretical basis for solution of a great deal of problems in the Three Gorges Reservoir region.
1999, 7(3): 243-249.
According to the research results of rock qulity calculation, rock mass structure combination, and others, the authors use limited engineering parameters, basic structure of rockmass, evolved structure of rockmass as the first order index, propose a technique of dynamic and engineering classification of mine road surrounding rockmass(DEC), and suggest a method to use the DEC.
According to the research results of rock qulity calculation, rock mass structure combination, and others, the authors use limited engineering parameters, basic structure of rockmass, evolved structure of rockmass as the first order index, propose a technique of dynamic and engineering classification of mine road surrounding rockmass(DEC), and suggest a method to use the DEC.
1999, 7(3): 250-256.
The current situation and tendency of water environment, some characteristics of water resource distribution, and water utilization in China are analyzed in this paper. An emphasis is placed on the significance of utilization of rainfall, mine discharge, and salt water, water saving, and reuse of waste water in water short areas of northern China. A discussion is mainly on some ways to combined use of surface water and underground water. Three models for sustainable utilization of water resources are put forward, i.e. artificial recharge and optimized adjustment and control, systematical planning and combined utilization, and combination of wells and channels and reasonable development and full use of water resources.
The current situation and tendency of water environment, some characteristics of water resource distribution, and water utilization in China are analyzed in this paper. An emphasis is placed on the significance of utilization of rainfall, mine discharge, and salt water, water saving, and reuse of waste water in water short areas of northern China. A discussion is mainly on some ways to combined use of surface water and underground water. Three models for sustainable utilization of water resources are put forward, i.e. artificial recharge and optimized adjustment and control, systematical planning and combined utilization, and combination of wells and channels and reasonable development and full use of water resources.
1999, 7(3): 257-265.
The loess Plateau of northwestern China is located in a semiarid climate region with the maximum precipitation of less than 700 mm, but it is one of the areas with most serious landslide hazards in China. Landslides on the loess Plateau are both of large number and large scale, including numberous recent landslides formed in earlier Holecene and ancient landslides formed in Latc Middle Pleistocene. Among the factors controling the landslides on Loess Plateau Hipparion(N2) laterite servcs as a medium and sliding zone and plays an important role in formation of large and medium scale landslides on the Loess Plateau of northwestern China. Based on the predecessors studies, and recent reseach by authors, this paper summarizes the formation and development regularities of large and medium scale landslides on the Loess Plateau, the effect of soil mass structure on formation of landslides, the relation of landslides with material composition and engineering properties, and ancient weathered zone (unconformable surfacc) of Hipparion laterite. Finally the formation mechanism of landslides is discussed.
The loess Plateau of northwestern China is located in a semiarid climate region with the maximum precipitation of less than 700 mm, but it is one of the areas with most serious landslide hazards in China. Landslides on the loess Plateau are both of large number and large scale, including numberous recent landslides formed in earlier Holecene and ancient landslides formed in Latc Middle Pleistocene. Among the factors controling the landslides on Loess Plateau Hipparion(N2) laterite servcs as a medium and sliding zone and plays an important role in formation of large and medium scale landslides on the Loess Plateau of northwestern China. Based on the predecessors studies, and recent reseach by authors, this paper summarizes the formation and development regularities of large and medium scale landslides on the Loess Plateau, the effect of soil mass structure on formation of landslides, the relation of landslides with material composition and engineering properties, and ancient weathered zone (unconformable surfacc) of Hipparion laterite. Finally the formation mechanism of landslides is discussed.
1999, 7(3): 266-271.
Jurassic Tertiary red beds, composed of violet or varicolored samdstone and conglomerate, is widely spread in coal bearing basins of southwestern Shandong. By use of many new testing methods, the material composition, pore structure, permeability, expansibility and disintegration of red beds are studied. The effect of red beds on shaft construction and coal mining is disscused.
Jurassic Tertiary red beds, composed of violet or varicolored samdstone and conglomerate, is widely spread in coal bearing basins of southwestern Shandong. By use of many new testing methods, the material composition, pore structure, permeability, expansibility and disintegration of red beds are studied. The effect of red beds on shaft construction and coal mining is disscused.
1999, 7(3): 272-278.
A new concept of apparent sliding forcefor slope sliding is suggested and can be used for analysis of mechanism of soil or rockmass slides in this paper. It was applied to the Lianziya dangerous rockmass of the Three Gorges of Yangtze River. It is proved that this method is very useful to study of mechanism for slope sliding and improves its stability evaluation, engineering control program, and engineering arrangements.
A new concept of apparent sliding forcefor slope sliding is suggested and can be used for analysis of mechanism of soil or rockmass slides in this paper. It was applied to the Lianziya dangerous rockmass of the Three Gorges of Yangtze River. It is proved that this method is very useful to study of mechanism for slope sliding and improves its stability evaluation, engineering control program, and engineering arrangements.
1999, 7(3): 279-283.
The observed data of slope displacement is statistically analysed in accordence with the characteristics of slope deformation and destruction in this paper. A new model is set up by using the unstable time series theory to forecast the slope deformation and displacement. The theory is confirmed to be effective in practical analysis.
The observed data of slope displacement is statistically analysed in accordence with the characteristics of slope deformation and destruction in this paper. A new model is set up by using the unstable time series theory to forecast the slope deformation and displacement. The theory is confirmed to be effective in practical analysis.
1999, 7(3): 284-288.
High density resistivity method appplied to archaeology could provide higher resolution of electrical structure of the underground. Modified Zhody inversion method is introduced in the paper. A numerical simulation is used to estimate the vality of this method. Using the method two high density profiles observed on the Zhou Dinasty wall ruins in Shangqiu were processed and a good result close to archaeological data is obtained. The modified Zhody inversion method shows an excellent application perspective.
High density resistivity method appplied to archaeology could provide higher resolution of electrical structure of the underground. Modified Zhody inversion method is introduced in the paper. A numerical simulation is used to estimate the vality of this method. Using the method two high density profiles observed on the Zhou Dinasty wall ruins in Shangqiu were processed and a good result close to archaeological data is obtained. The modified Zhody inversion method shows an excellent application perspective.
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