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本文以某矿山高浓度分级尾砂胶结充填料浆为研究对象,通过环管试验及数学分析,获得了试验料浆在不同工况条件下的管流阻力损失,对试验数据开展流变学分析,得到料浆的屈服应力、塑性粘度等流变参数,最终构建了试验料浆管流阻力计算的经验模型。结果表明:试验料浆在管径100 mm,流量17~30 m~3/h条件下,直管内的阻力损失为2 600~3 000 Pa/m,90°弯头(曲率半径1 m)内的阻力损失为2 800~3 200 Pa/m,90°弯头(曲率半径0.5 m)内的阻力损失为2 800~3 360 Pa/m,弯头阻力稍大于直管,且曲率半径越大,阻力越小。该矿山采用DN150充填管道较为适宜。
In this paper, a high-concentration grading tailings grouting slurry was taken as the research object. Through the loop test and mathematical analysis, the resistance loss of the test slurry under different working conditions was obtained. The rheological analysis The yield stress, plastic viscosity and other rheological parameters of the slurry were obtained. Finally, an empirical model for calculating the flow resistance of the slurry was established. The results show that the resistance loss of the test slurry under the conditions of 100 mm diameter and 17 ~ 30 m ~ 3 / h flow rate is within the range of 2 600 ~ 3 000 Pa / m and 90 ° elbow (radius of curvature 1 m) Of the resistance loss of 2 800 ~ 3 200 Pa / m, 90 ° elbow (radius of curvature 0.5 m) within the resistance loss of 2 800 ~ 3 360 Pa / m elbow resistance slightly larger than the straight tube, and the greater the radius of curvature The resistance is smaller. The mine DN150 filling pipe more appropriate.