The technique of decreasing Vibration of deep and Wide road cut of two side by chamber blasting;

The technique of slope protection of deep and wide road cut of two side by chamber blasting;

The paper gives out main technical measures to keep side-slope in stableness by chamber blasting,which can also make high side-slope stable only when useful geological information and reasonable plan are well known,and charge's broken scope is precisely defined and single charge is independently exploded.

This article introduces Fenhe reservoir rock plug blasting practice, which was carried out in the thick layer of silt underwater and chamber blasting plus drilling method was adopted.