求翻译：如围堰过水频频，且过水流量大，则进水口势必进水，既不能保证上平洞施工安全，也会对上平洞造成工程破坏。是什么意思？

Such as cofferdam over the water frequently, and over the water flow, the inlet bound water, we can not guarantee the adit construction safety will cause damaged by the works on the adit.

As a cofferdam water frequently, and the water flow, the water inlet is bound, it does not guarantee the safety of construction, and flat-dong, Jung-gu is also caused by the flat-dong project.

If the coffer dam water repeatedly, also the discharge of water has been big, then the water inlet will enter the water inevitably, also will not be able to guarantee the first tone hole construction security, also will be able to create the project destruction to the first tone hole.

Cofferdam of water frequently, and the water flow, the inlet is bound to water, unable to guarantee the safety of construction on, flat hole will result in project failure.

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