五沟煤矿1031工作面防水煤柱留设分析

Analyse on Reasonable Water coal pillarLeaving Key Technologies in No.1031 working face,Wugou Coalmine

在分析五沟煤矿地质、水文地质基础上,建立了数值分析模拟模型,利用FLAC3D数值模拟软件分析1031工作面开采"两带"高度,获得了顶板岩层应力与应变演化特征。采用不同方式预测了工作面不同开采区域"两带"最大发育高度,确定了含水层下防水煤岩柱的合理留设,制定了安全调控技术措施,由此可解放煤炭资源量20余万t,对含水层下安全开采具有重要的推广应用价值。

Based on the analysis of Wugou coalmine geology and hydrogeology ,numerical simul-ation model is established .The 1031 working face of mining height is numerical simulated by mea-ns of the FLAC3D software .The stress and strain evolution characteristics of roof strata were obtained .Different ways are a‐dopted to predict the biggest growth altitude of ＂two belts＂in workin -g face＇s different mining re‐gions .The reasonable design of waterproof coal pillar in the lower aqui -fer is determined and safety regulation and technical measures are developed .All of these can lib -erate coal resources of more than 20 million t and have important application value for the lower a -quifer mining safety .