Based on the linear programming theory, this paper establishes an economic model of coal blending, and analyzes its technical and economic effect.

基于线性规划理论，建立配煤的经济模型，并对电厂燃用混煤进行技术经济分析。

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So using additives properly can obtain the better technical and economic effect in substituting the common cements for the special ones to deal with the troublesome zones.

因而合理使用外加剂可以使常用普通水泥在现场处理复杂地层时代替特种水泥，取得良好的技术、经济效益。

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The collocation of equipment of this face and the equipment matching capability are analyzed and the technical and economic effect of this face is also introduced in this paper.

分析了加长工作面设备配置与配套性能，介绍了加长工作面开采的技术经济效果。

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