当底板中含断层时其破坏深度增大，采前采后的应力变化也更为复杂。
When there is a fault in coal seam floor, the breakage depth will increase and the stress change will be more complicated.
当底板中含断层时其破坏深度增大，采前采后的应力变化也更为复杂。
When there is a fault in coal seam floor, the breakage depth will increase and the stress change will be more complicated.
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