| The Block Theory , which has developed and improved this years, is a method of studying the rock mass work' s stability. This method has been applied to several fields and has made much progress. But in the field of underground cavity, because of the especial geologic environment and limited research area, the study seems to have no deep progress. At present, the software Unwedge is applied to so much research of computing the Stability of Block. The calculated result by this software, including volume and stability coefficient, is not the assured outcome. And it also can not give the exact appearance place. Aiming at this question , basing on studying the Underground Cavity in LaXiWa hydroelectric station , through establishing entity model, combining model, slicing model , and vector analysis , article introduce a method of analyzing the Stability of Block and get the Certain Search. All the graph result is showed in AutoCAD , which is a graph software. In order to this way can be used in all the fields more expediently and simply , the write made a useful software. With this software , user can get the result in very shot time. This thesis also compares the outcome computed by my software and Unwedge. It proves the soft can work out the right result. By using this system, we would not need to do complicated things. It can show us the result quickly and exactly. So it is a good way for engineering people to study the the stability of block of underground cavity. |
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