Physical considerations in explosion cave design of 10 kt TNT nuclear explosion of deuterium fusion are analyzed.

Considering the simple equipment and relatively lagged technique,a way of substituting coyote blasting for small diameter drifting blasting is introduced in this paper.

The disign method and features of coyote blasting in quarrying rockfill material for the Doulingzi hydro power project are described.

The chamber blasting with bar charges is used in rock dig of openpit, railway road, hydroelectric industry and other projects.

The linear charge chamber blasting method which was popular in recent years was put into use to reach the purpose of reducing the hidden accident quickly and effectively in mining stope and insuring the copper production smoothly.

Based on the practice of exploiting dam materials for panel rock-fill dam at Dahe reservior (Grangdong Province) by chamber blasting technique, the feasibility of exploiting dam materials by such technique is discussed, also, some viewpoints in the implementation process are put forward.

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.