Based on elastic theory and relative analysis, the stress distribution of soil cave in foundation can be deduced, and the stability of soil cave can be determined by the Mohr-Coulomb yield criteria.

• 根据弹性理论及相关分析，可以获得地基中土洞周边土体的应力状态，再利用莫尔-库仑屈服准则，对其进行安全稳定性判别。