Research On Assistant Decision System In Slope Engineering And Application In Wanliang Highway

The stability analysis and the unstable slope control are key problems in slope engineering . The thesis intent to study these problems to establish an assistant decision system of slope engerning so as to make it more valide and efficient in stability evaluation. The research tries to adopt some modern scientific techniques such as system engineering, information engineering, fuzzy neural network and computer technology with the stability evaluation and the design for the unstable slope control as the study object, and is based on the composite anasysis of the slope engerning research all over the world. First of all, the database of slope engineering is built up to put the modern management of slope factors possible which servers as a base of the following research.Because of insufficiency of traditional methods for s1ope stability comprehensive evaluation, the thesis has made an exploration to the handling principles for index eva1uation, proposed a knowledge quantitative method for index evaluation, and an multi-expert mode1 method for index-weight acquirement. Beside, in view of the characteristics of multi-person participating in comprehensive evaluate on of the stability of a slope in general, the thesis has put forward and set up a multi-expert comprehensive eva1uation method for slope stability evaluation. Thus it makes the comprehensive evaluation method for slope stability more reasonable and scientific. After achieving the comprehensive evaluation method of slope stability, an FNN(fuzzy neural network)-based evaluation system was developed for experience inference in slope stability evaluation for the purpose of learning classic example of slopes and applying to the corresponding style slopes. In the thesis, a multi-expert comprehensive evaluation method is put up and set up based on study on presently choosing processes of the control plans for an unstable slope. At the same time, the influencing indexes in choosing the control plans for an unstable slope were studied earnestly, an princip1e of choosing indexes and a multi-expert evaluation index system were constructed, an index-weight determination method was given out and a comprehensive ordering model was established. So the quantitative ordering of the control plans for an unstable slope becomes possible.Finally, foregoing systems are integrated into the assistant decision system of slope engineering to improve the intelligentizing degree of evaluation and decision and theassistant decision system is applied to Wanliang highway successfully.