八字岭分岔式隧道的三维地质力学模型试验研究

用地质力学模型试验成功地模拟一段分岔式隧道是一项系统工程，它包括确定模型试验模拟的范围和比尺，正确地选择模型试验的相似材料，设计并加工模型试验的台架和模型的制作，开挖与测试。对模型试验这一系统工程做了较为详细的介绍。模型试验结果表明，按照设定的试验工序，试验的新材料适合各类模型试验，试验台架满足试验所需要的刚度，模型易于制作和开挖、测试效果良好。

Three dimensional geomechanical model test study on BazilingBifurcated Tunnel

It is a systems engineering to successfully simulate a part of a bifurcated tunnel using 3D geomechanical model tests. It involves how to determine the areas and scale for which the model tests simulate, how to choose the similar material which simulates rock mass correctly in geomechanics model tests, how to design and manufacture the steel structure for the models and the manufacture ,excavation and surveying of the models. This paper indicates all the aspects of the systems engineering based on the internal and external model tests including our model tests. Our model tests show that it can’t be a waste of time. The new type similar material may be suitable for all kinds of models. The steel structure for the models satisfies the necessary rigidity of model tests. The models are easily manufactured and excavated. The results of the surveying satisfy the demands of our tests.