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断层地质构造的存在将严重影响穿越采空区高速公路路基路堑的稳定,选取既有断层构造存在,又有采空区的箱涵高路堤高速公路段落,依托典型工程实例,采用岩土工程常用的数值模拟分析软件—Flac3D,研究采矿引发断层“活化”不利的地基稳定性,研究“活化”地质断层,分析高填方路基“疾病”的机理、变形和地面不稳定,探讨修筑箱涵通道及高填路基而出现的变形与失稳问题,发现预防道路路基的不连续变形、沉降,旨在为确定合理的技术基础。研究表明:煤层开采改变了围岩的物理力学性质形态,是影响断层“活化”的主要因素;断层“具有屏蔽作用,影响水平方向的移动、下沉变形的对称性。
The existence of fault geological structure will seriously affect the stability of the roadbed crossing the expressway through the goaf. Select the box culvert highway embankment expressway with existing fault structure and goaf, relying on typical engineering examples, geotechnical engineering commonly used Of the numerical simulation software-Flac3D, to study the adverse geological instability of the mining-induced fault ”activation “, to study the mechanism of ”activation “ geological faults, analysis of high embankment ”disease “, deformation and ground instability , Explored the deformation and instability problems occurred in the construction of culvert passage and high embankment, and found that the prevention of discontinuous deformation and settlement of roadbed is intended to determine the reasonable technical foundation. The research shows that coal mining changed the physical and mechanical properties of the surrounding rock and is the main factor affecting the ”activation“ of the fault. The fault ”has a shielding effect that affects the horizontal movement and sinking symmetry.