Most hillside community residents desire to achieve safety by monitor system and technology. But they would not like to pay expense in millions for devices. The site information and long-term observation of geology、geography、topography、hydrology & architecture, as well as basic data were studied in order to develop an economical monitor system to prevent or mitigate the hillside disaster.
An automatic warning system may be installed on the slope or the retaining structures to minimize the casualties in the case the landslide should occur. In general, the slope failure warning system may be consisted of five major units, there are sensor, data acquisition, data transmission, alarm and power supply units. In addition, A proper emergency action plan should be comprehended to prevent from being panic when the alarm is triggered. A practical case is presented herein to further describe the details of the automatic warning systems.
Various geohazard types have a strong relationship with slope development under certain geological conditions. These geohazard factors are best found within the framework of the geological environment. The factors to be analyzed in the geological environment include geomaterial composition, changes in the geological structure, characteristics of geomorphology, geohydrology etc. If sufficient geological information is available to an analysis of slope stability, then slope security can be afforded more reasonable awareness and protection.
As the population expanding rapidly with the increase in the urban development and commercial activity in Taiwan, all uses of land become more critical and competitive. Good agricultural land located at the hillslope areas will be under increasing pressure from urban growth and expanding public facilities. These demands are unique to our time reflecting the increasing importance of land as living space. Hence, much of these slopeland will be taken over for nonagricultural uses such as dwelling, recreation, engineering construction, mining operation etc. Most of these decisions associated with human activity will be irreversible, so the multi-integration of soil & water conservation technology applied on slopeland conservation and management is evident and important. This paper gives the general result of one of these purposes and efforts to the hillslope development in the future.
The rapid expansion of urban area and the NIMBY attitude of the general public have been driving the landfills towards hillside area of Taiwan. The design and construction of landfills is much more difficult under the geographical conditions of the hillside area. This paper discusses how engineers can utilize geosynthetics in hillside landfills to enhance their performance.
This paper introduces the investigation, planning and design of an earth dump site at valley. We first discuss the regulations, selection guidelines, alternatives, construction technologies, soil and water conservation, and cost/benefit estimation for an earth dump site. Eighteen valleys around the Linkou Terrace are then proposed as the candidate earth dump sites in the preliminary study. In particular, the largest dump site, Hung Shui Hsien Chi, was chosen to perform basic planning to the feasibility study level . This work clearly illustrated the main considerations in planning an earth dump site at a valley. Finally, the applications of Geographic Information System and Virtual Reality Modeling Language to the selection of an earth dump site are also introduced.
A 30m long, 6.9m wide and 1.9m highway embankment using super-light EPS (Expand Poly-Styrolene) as subbase material was successfully constructed. The test embankment has been performing satisfactorily under heavy traffic for three and half years. Some fundamental aspects of the design on the EPS test embankment was reported. The construction process, the monitoring system, and the results of long-term monitoring were also reported.
Janbu’s methods were extended into 3-D system for analyzing the stability of natural slopes under asymmetric geological and geometrical conditions. A comparative study was also conducted to verify the 3-D limit equilibrium formulations derived from the present study. It was found that this method rendered accurate results for both 2-D and 3-D slopes. The new method, proposed in the present study, features the equilibrium considerations of two-directional force and moment equilibriums. Therefore, this method may be considered as an instance of Janbu’s generalised slice method. It was also demonstrated that the new method eliminated impractical assumptions, and time-consuming pre-processing, in analyzing potential sliding in the slope area.