In response to the demand for automation, Moh and Associates Geotechnical Information Center (MAGIC) has developed a powerful software package, IDEAL (Integrated Databases and Engineering Applications Library) for compiling data related to designs and constructions of civil works. It basically contains six database management systems：(1) instrumentation and alert, (2) soils, (3) construction, (4) analyses, (5) graphics and (6) documents. This software is a WINDOWS application using Delphi for database management, Lotus Notes for file manipulation and AutoCAD for graphic displays. It also has the capability of managing animations, pre-recorded movies and sounds, scanned photos, and has the provision of sharing databases with other GIS systems.
For integrating the ample and diversified geographic information gathered during the early planning stages of a number of expressways, and for developing computerized route selection functions, the Taiwan Area National Expressway Engineering Bureau (TANEEB) is currently actively engaged in establishing a Geographic Information System (GIS) that would effectively process the enormous data collection, and through a computer, rapidly retrieve and display the various factors pertinent to route selection, study methodology, evaluation indices, and the results having been achieved. It is expected that the necessary materials for policy making and communication with the public be available immediately through the use of GIS. It is also anticipated that the route selection be achieved through GIS；thus the ideal of automated operation be fulfilled. In addition, when integrated into the National Geographic Information System, the goal of sharing GIS with all the concerned professionals will also be realized.
This paper proposes an operating system, Residual Soil Control and Information Exchange Center, for solving the spill soil problem generated by construction projects. To coordinate with the operation of the center, the operating principles as well as the construction spill soil management system are developed in this study.
The primary features of this study are as follows: (1) based on the application of Geotechnical Engineering DataBase System (GEDBS）,the soil characteristics and amount generated from the construction sites are analyzed and calculated, (2) considering the reutilization of the spill soil to decrease the amount of waste dumped in the dumping sites, a soil information management system, ArcSoil, is developed, (3) ArcSoil identifies the optimal route for transporting soil in metropolitan aeas to reduce the traffic impact and transportation cost, (4) with the application of GIS combining with GPS, the movement of the trucks can be monitored in a real time basis, and (5) applying the system, Residual Soil Control and Information Exchange Center is proposed to improve the operation efficiency.
The economic development of the last decade in Taiwan has urged strong demand of land space for urban , industrial and leisure uses . Because most plain areas are designated for agricultural use , development of slopeland near the urban area becomes an alternative target consequently .Grading or excavation of slopeland will inevitably change its metastable status and accelerate the rate of erosion and sedimention. All might result in severe geologic hazards to the human environment .
Study of environmental geology provides an effective tool to reduce or to mitigate impacts of geologic hazards . Under the project of “Establishment of environmental geology database ” awarded by the Construction Department of Taiwan Provicial Government , the Energy and Resources Laboratories has accomplished investigation and evaluation of environmental geology for more than 260,000 hectares of slopeland in past eleven years . The methodology of study and application of the database will be discussed in the paper.
Environmental sensitive areas are termed to include areas that have significant value to human societies, or areas with characteristics of potential natural hazard, which are likely to result in adverse environmental effects due to inadequate development activities. In this paper, the definitions and functions of environmental sensitive areas are described firstly. Based on the definition, by use of GIS and mapping techniques, the environmental sensitive areas of central region of Taiwan are delineated.
A regular grid digital terrain model(DTM) has similar data structure as a raster image. Only a simple transformation from elevation value to gray value is needed to produce an image file which may be shown by an image viewer software. If we further add the effect of shade, then we may enhance the stereographic effect of the image and represent the topography in a more realistic way. An image map of this kind is called a shading map. If color values are considered in the elevation to color transformation, then a color shading map may be got. A color shaded DTM may also be shown as a perspective projection, if a projection technique is used.
This paper firstly describes the data structure of a DTM, then color shading method, and finally some examples to demonstrate the application of a color shaded DTM in geological investigation. Because the use of a digital computer is easy to change the selection of sun position, eye position, vertical exaggeration of elevation height and various assignment of colors, so, interested features can be emphasized according to proper selection of the parameters. It is helpful for us to make geological interpretation from an enhanced image. Accordingly, DTM color shading technique is useful and is worth being recommended for use.