| China is one of countries full of landslides mostly in the world and the mountain area accounts for about 2 / 3. Besides the natural factors leading to landslides, with the vigorous development of the national economy, the engineering activities on mountain zoon also play a destructive role in the environment. In railway, highway, water conservancy, shipping, mining, construction and national defense we have to face the slope stability problems. Damage caused by landslides exceeds $ 3 billion annually in China and more than $ 10 billion each year worldwide, making losses attributed to landslides greater than any other natural disaster except earthquake. Along with massive property loss, thousands people are killed and injured every year as the result of landslides. Potentially, much of this property damage and many of the injuries and deaths can be avoided with an operational landslide warning system. As the development of new monitoring technology, using sensors for monitoring landslide has become very important. These studies can make contributions to capturing the characteristics of landslides in time, which provide reliable information and scientific basis for correct landslides analysis, evaluation, prediction and control.The paper's goal is to study simulation of landslide and using sensors to monitor the landslide in the laboratory. Five different kinds of sensors are from Geokon Company, United States (surface displacement meter, embedded displacement meter, multi-point displacement meter, earth pressure cell, and inclinometer). Our jobs are to design the auxiliary tooling which can help to achieve simulation of landslide and how to debug and test the identification part of whole monitoring system. They are helpful for multi-angle and multi-faceted expansion of the ideas such as internal results, related factors, predisposing factors. In addition, programming software is used to establish landslide warning system for risk data management and early warning in the future. Some practical significance and scientific research achievements of value are got. To sum up, in the following aspects:Firstly the types of landslide, impact factors, slope of the structure, deformation theory and other geological model are the focus points. The next step is finding the key points for the landslide monitoring and then we summarized the current monitoring methods.Different sensors working principle, advantages and disadvantages are analyzed in detail. Monitoring and early warning indicators which determine whether a slope is in safe state are introduced (stability factor, reliable probability, displacement rate, displacement acceleration, strain rate, creep curve tangent angle, displacement vector angle, acoustic emission parameters, fractal dimension, etc.). All of these make the early warning indicators, sensors monitoring and early warning form an organic whole logically.According to different working principles of the five sensors (surface displacement meter, embedded displacement meter, multi-point displacement meter, earth pressure cell, and inclinometer) five different auxiliary tooling which can help to achieve simulation of landslide are designed. By analyzing data testing device is used to detect the similarity between simulated landslide brought by machine tooling and the real one. Test displacement and given displacement show that there are more than 96% similarity. It can really prove that the device can simulate landslide effectively.In order to facilitate the management of monitoring data and find suddenly changed data, with considering the different monitoring indicators we use VC + + to make programs for the surface displacement transducer, embedded displacement meter, multi-point displacement meter, earth pressure, and inclinometer respectively. Compared to safety value when there is danger, the software will automatically issue a warning. Finally, Delphi is used to design software which can manage the five programs. So the warning system becomes a whole. |
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