煤矿高浓度胶结充填料浆管道沿程阻力研究  

Research on Pipe Flow Resistance Loss of High Concentration Filling Materials in Coal Mine

作　　者：于跃[1] 郑伟钰 程坤[1] 蒋斌[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤矿安全》2017年第2期72-75,共4页Safety in Coal Mines

基　　金：国家科技支撑计划资助项目(2009BAB48B02)

摘　　要：以新阳煤矿充填开采项目为背景,通过流变试验研究高浓度胶结充填料浆的流变特性,确定其流变参数,并结合充填料浆沿程阻力损失的理论计算公式,计算出不同配比下料浆的沿程阻力,最后通过环管试验进行验证。结果表明:高浓度胶结充填料浆的屈服应力和黏度系数随粉煤灰掺量的增加而增大,其流变模型可近似用宾汉模型表示;基于宾汉模型,提出了高浓度胶结充填料浆沿程阻力损失的理论公式;运用该理论公式计算出料浆在水平直管中的阻力损失的理论值;利用环管试验进行验证,其结果与理论值相差不超过3%,无堵管现象,验证了理论公式在实际应用中的可靠性。Taking the backfilling mining under villages in Xinyang Coal Mine as the project background, through the rheological test, rheological properties and parameters of high concentration cementation filling slurry were determined. Combining with theoretical calculation formula of filling slurry resistance loss in pipeline transportation, slurry resistance under different ratio was calculated respectively. Finally, the results were validated through the round-pipe experiments. The results show that the yield stress and viscosity coefficient of high concentration cementation filling slurry increase with the increase of the dosage of fly ash and its rheological model can be expressed by Bingham plastic fluid flow pattern; based on Bingham model, theoretical calculation formula of high concentration cementation filling slurry resistance loss was proposed. We use the theoretical calculation formula to calculate the theoretical value of the slurry resistance loss in horizontal straight pipe; by round-pipe experiment, the difference between the test result and the theoretical value is not more than 3%, without blocking phenomenon; the reliability of the theoretical formula was verified in practical application.

关 键 词：高浓度胶结充填料浆 流变特性 阻力损失 环管试验 

分 类 号：TD823.7[矿业工程—煤矿开采]