地下工程问题三轴模拟试验台及其应用

用于岩土工程和深部地下工程问题研究的、颇具特色的大型三轴物理模拟试验台于１９８６ 年在中国矿业大学建立并通过技术鉴定。该试验台有效试验净高２ ．４ ｍ ,有效试验直径达１ ．６ ｍ , 试验压力可达１１ ．０ ＭＰａ 。１０ 年来,利用这个试验台先后进行了人工冻结温度场、冻结壁的厚度与变形、冻结管受力与变形、深表土立井井壁受力以及地层加固后围岩与井壁相互作用等诸多课题的研究,累计试验次数超过百次,取得了包括井壁破坏机理的“附加力理论”在内的一系列研究成果。

An experimental frame for geomechanical engineering simulation and its application

A particular large scale triaxial experimental frame for physical simulation came to fruition in China University of Mining and Technology in 1986, which, with a special nature, can be used to solve the problems of geomechanical engineering and mine construction. The frame is nominally 2.4 meters high, 1.6 meters in diameters, and can be loaded up to 11.0 MPa. For more than 10 years, many research projects have been conducted on this frame, which include studies on manually frozen temperature field, the relation between thickness of frozen wall and its displacement, the stresses in the freezing tubes and the tube distortion, the stresses in shaft lining in deep subsoil and the interaction between the wall and surrounding rock reinforced, and so on.A series of research results have been achieved, including “the theory of additional forces" that describes the mechanism of shaft wall failure.