多目标决策法在含水层下开采方案选择中的应用

采用多目标决策的方法，以含水层下采煤不同开采方案对应的防水煤岩柱高度设计值、月度产量、吨煤开采成本、采出率为评价指标，对不同开采方案运用加权总均方根算法进行计算，以计算结果值与理想结果值偏差最小的方案为优选方案。以某煤矿第四系巨厚松散含水层下开采为例，对7种开采方案（全厚或限厚综放开采3种方案；网下综放开采1种方案；分层开采3种方案）的上述4个评价指标进行了分析，详细说明了各个方案的加权总均方根偏差计算过程。结果显示了不同基岩厚度下对应的最优开采方案。利用此结果并结合该煤矿六采区各个区段的基岩厚度做出了区段开采方案决策。

Application of multi-objective decision to estimate mining methods for coalmine under water-bearing strata

ased on waterproof pillar’s vertical height,monthly production,coal costs per ton,and mining recovery of different mining methods,weighted root mean square was calculated by using multi objective decision.The mining method,that has the smallest weighted root mean square deviation from ideal scheme,is the best plan.A coalmine under super thick unconsolidated stratum of the Quaternary was analyzed.The four evaluation indexes of seven mining methods were calculated by weighted root mean square algorithm.The results show the relationships between different bedrock thickness and the best mining methods.Based on these results and the bedrock thickness of every district sublevel,the mining methods were decided.