CAJ | 학술논문

　　针对全断面岩石掘进水平支撑在不稳定地质条件下，易出现支撑不稳、刀盘下沉等问题，基于ANSYS/LS?DYNA有限元仿真平台，以II类和V类围岩为研究对象，建立支撑靴在脉动载荷作用下撑紧围岩的数值仿真模型。提取了围岩的等效应力、支撑反力变化规律及材料失效质量。研究结果表明：水平支撑基本能够适应II类围岩，而在V类围岩中容易出现失稳，随着接触面积的下降，支撑力出现具有明显的阶跃性质，失稳时刻也逐渐提前，反映出水平支撑对软弱围岩的不适应，为支撑靴的结构设计和地质适应性提供参考依据。
　　침대전단면암석굴진수평지탱재불은정지질조건하，역출현지탱불은、도반하침등문제，기우ANSYS/LS?DYNA유한원방진평태，이II류화V류위암위연구대상，건립지탱화재맥동재하작용하탱긴위암적수치방진모형。제취료위암적등효응력、지탱반력변화규률급재료실효질량。연구결과표명：수평지탱기본능구괄응II류위암，이재V류위암중용역출현실은，수착접촉면적적하강，지탱력출현구유명현적계약성질，실은시각야축점제전，반영출수평지탱대연약위암적불괄응，위지탱화적결구설계화지질괄응성제공삼고의거。
In order to avoid the shortcomings of the TBM gripper, such as instability of rock supports and cutter head subsidence, while it works in the unstable geology conditions, based on the finite element simulation platform of ANSYS/LS?DYNA, the researchers constructed a numerical simulation model of interaction between a gripper and rock under the pulsating load using type II and V surrounding rocks as their research objects. Next, the equiva?lent stress, and support reaction change rule, as well as the mass failure of surrounding rock were obtained. The re?sults showed that the gripper was able to adapt to the type II surrounding rock, and appeared unstable in the sur?rounding rock of Class V. Furthermore, with the contact area declining, the support force showed obvious nature of the step period, and the instability moment was gradually ahead of time, which reflected the maladaptation to the soft surrounding rock. The research study provides evidence for the need to design the structure of gripper shoe and the geological adaptability of it.