用有效盐密(EESDD)法表征输变电设备污秽程度能够弥补等值盐密(ESDD)法与污闪电压相关性不大的缺陷,对输变电设备进行更好的污秽评估。为此介绍了新的有效盐密的测量设备,并通过一系列人工污秽试验研究了探头尺寸、用水量以及盐成分对...用有效盐密(EESDD)法表征输变电设备污秽程度能够弥补等值盐密(ESDD)法与污闪电压相关性不大的缺陷,对输变电设备进行更好的污秽评估。为此介绍了新的有效盐密的测量设备,并通过一系列人工污秽试验研究了探头尺寸、用水量以及盐成分对有效盐密测量的影响,最终选择外半径为5.13 mm,内半径为1.00 mm的探头,并选择0.02 m L/cm^2的用水量。最后将有效盐密的测量应用于实际运行的输变电设备中,对不同地区运行绝缘子表面的等值盐密和有效盐密进行了比较,用等值盐密与有效盐密的比值探讨了不同地区的污秽特征,为有效盐密的进一步推广提供了依据。结果表明,有效盐密是一个很好的表征污秽度的参数,是等值盐密很好的补充。展开更多
Aimed at the CMS laser scanning theory and characteristic, a combined actual situation of stope N4-5 of Fankou Lead-Zinc Mine and complementary monitoring of the stope were carried out by carefully choos- ing two meas...Aimed at the CMS laser scanning theory and characteristic, a combined actual situation of stope N4-5 of Fankou Lead-Zinc Mine and complementary monitoring of the stope were carried out by carefully choos- ing two measuring points. The cavity 3D visible model was created by large-scale mining industry soft- ware Surpac after changing the measured data. The stope mine design model, bottom structural model and backfill model of the south and north sides of the stope N4-5 were established according to the stope design data. On this basis, the stope block model was established, and then block attribute was estimated. The amount the ore remains, mullock, backfill and total mined ore were calculated through the solid model restrains. Finally, the stope mining dilution rate and loss rate reached 8.2% and 1.47%, respectively. The practice indicates that the mining index visible calculation method based on cavity 3D monitoring and stope block modeling can make up the deficiency of adopting the solid model to directly carry out the Boolean operation. The stope mining indexes obtained by this method are accurate and reliable, and can be used to guide the actual production management and estimate the mining quality.展开更多
文摘用有效盐密(EESDD)法表征输变电设备污秽程度能够弥补等值盐密(ESDD)法与污闪电压相关性不大的缺陷,对输变电设备进行更好的污秽评估。为此介绍了新的有效盐密的测量设备,并通过一系列人工污秽试验研究了探头尺寸、用水量以及盐成分对有效盐密测量的影响,最终选择外半径为5.13 mm,内半径为1.00 mm的探头,并选择0.02 m L/cm^2的用水量。最后将有效盐密的测量应用于实际运行的输变电设备中,对不同地区运行绝缘子表面的等值盐密和有效盐密进行了比较,用等值盐密与有效盐密的比值探讨了不同地区的污秽特征,为有效盐密的进一步推广提供了依据。结果表明,有效盐密是一个很好的表征污秽度的参数,是等值盐密很好的补充。
基金Financial support for this work was provided by the Frontier Research Plan Key Program of Central South University (No.2010QZZ001)the Open Projects of State Key Laboratory of CoalResources and Mine Safety, CUMT (No. 11KF02)
文摘Aimed at the CMS laser scanning theory and characteristic, a combined actual situation of stope N4-5 of Fankou Lead-Zinc Mine and complementary monitoring of the stope were carried out by carefully choos- ing two measuring points. The cavity 3D visible model was created by large-scale mining industry soft- ware Surpac after changing the measured data. The stope mine design model, bottom structural model and backfill model of the south and north sides of the stope N4-5 were established according to the stope design data. On this basis, the stope block model was established, and then block attribute was estimated. The amount the ore remains, mullock, backfill and total mined ore were calculated through the solid model restrains. Finally, the stope mining dilution rate and loss rate reached 8.2% and 1.47%, respectively. The practice indicates that the mining index visible calculation method based on cavity 3D monitoring and stope block modeling can make up the deficiency of adopting the solid model to directly carry out the Boolean operation. The stope mining indexes obtained by this method are accurate and reliable, and can be used to guide the actual production management and estimate the mining quality.
