The Kaklık Cave (Denizli, Turkey) was found following a partial collapse while a tractor was plowing a field. Since then, it is arranged for tourist visits and its stability assessment is of great importance for visitors. The authors have been carrying out geological, rock mechanics, and environmental investigations in the cave since 2003. The authors present the outcomes of these investigations in this study. On the basis of these investigations, the rock mass classifications of the cave were first done, and then its stability including the partial collapse section was evaluated using empirical and analytical methods and compared with in situ observations and other case history data. Finally, the stability and the triggering effect of the tractor on its partial collapse as a concentrated load on the ground surface were analyzed by a numerical method utilizing the discrete finite element method (DFEM), which allows the slip and separation along discontinuities and is based on an updated Lagrangian concept. The empirical, analytical, and numerical stability analyses have been investigated in detail, and it was found that the dead weight of the tractor plowing the field on the ground surface had a triggering effect on the partial collapse of the cave.

Kaklık洞穴（土耳其代尼兹利）是在拖拉机耕地时部分倒塌后发现的。从那时起，它被安排用于游客访问，其稳定性评估对游客来说非常重要。自2003年以来，作者一直在洞穴中进行地质，岩石力学和环境调查。作者在本研究中介绍了这些调查的结果。在这些调查的基础上，首先对洞穴进行了岩体分类，然后使用经验和分析方法评估了包括部分塌陷部分在内的稳定性，并与现场观察和其他案例历史数据进行了比较。最后，通过使用离散有限元法（DFEM）的数值方法，分析了拖拉机在部分集中塌陷时的稳定性和触发效果，该方法采用离散有限元法（DFEM），该方法允许沿不连续性滑动和分离，并且基于更新了拉格朗日概念。对经验，分析和数值稳定性分析进行了详细研究，发现在地面上耕地的拖拉机的自重对洞穴的部分塌陷具有触发作用。