摘要：
In order to optimize cylinder cut blasting mode for one-step raise excavation, an improved TOPSIS comprehensive evaluation model combining vertical projection approach was developed. Seven indexes considering the economy, technology and security were used, and the index weights were determined by coefficient of variance method to avoid the subjectivity. The improved evaluation model was applied to goaf dealing in a mine. Finally, the optimal scheme was applied in an industrial test. The results show that the best vertical distances between the scheme and positive of the four cutting modes were calculated and were 0.125 94, 0.089 89, 0.060 40 and 0.041 53 respectively, which indicate that the fourth scheme is optimal. Compared with the traditional TOPSIS, the improved TOPSIS tends to reveal clearer differences between schemes, which is convenient to optimize the scheme. The formed raise by optimal scheme is through up and down completely, and reaches the expected size.%为了解决直孔掏槽一次成井中掏槽方式选择的难题,通过引入逼近理想解技术(TOPSIS),并将垂面距离代替欧氏距离的正交投影法和传统TOPSIS相结合,提出一种基于改进TOPSIS法的综合评价模型.从安全、技术、经济3个方面综合考虑选取了7个评价指标,利用变异系数法(CV)确定指标权重,避免主观权重赋值法的人为因素干扰,使得权重赋值更加客观化.将该评价模型应用于某矿山一次成井治理采空区试验中,对初步设计的4种掏槽方式进行综合评价,并将最佳的掏槽方式用于工业试验.研究结果表明:计算出每个方案到正理想解的垂面距离分别为0.12594,0.08989,0.06040,0.04153,从而确定第4种方案为最优方案.与传统的TOPSIS法评价结果相比,改进的TOPSIS法评价结果的优劣程度更加明显,更加容易甄选出最佳方案.由最佳方案形成的天井上下贯通,达到设计规格,效果较好.
