Then, by simulating of initial excavating for enlarged and narrowed scope, a numerical solution of reasonable reinforcement scope is determined according to disruption field, stress field and displacement field.

• 然后在此加固范围基础上增大和缩小加固范围，对不同的加固范围进行模拟始发开挖，从破坏场、应力场、位移场方面出发，确定合理加固范围的数值解。