Large city deep karst collapse model test system

The invention provides a large-scale city deep karst collapse model test system, and the system comprises an urban activity stress simulation loading system which is used for simulating the influence of different urban activity stresses on deep karst collapse, and the urban activities comprise underground water level changes and/or rainfall conditions and/or static and dynamic loads and/or excavation disturbance; the measurement and control system is used for monitoring and controlling various parameters of the test system so as to measure and control the change condition of the parameters in the model test process; the parameters at least comprise pressure, water level and deformation. The urban activity stress simulation loading system in the system can simulate urban activities such as underground water level changes, rainfall conditions, static and dynamic loads, excavation disturbance and the like, the actual conditions are simulated more truly, and the risk of deep karst collapse can be evaluated more a