关于抽水管道运输性能的实验优化研究 纯江河泥填充材料的实验优化研究
Yingbo Wang1, Xiaoming Tang2, Feng Ju1
1State Key Laboratory of Intelligent Construction and Health Operation and Maintenance of Deep Engineering, China University of Mining and Technology, Xuzhou 221116, China.
Materials (Basel, Switzerland)
|October 29, 2025
概括
优化使用塔尔博特分级理论和变化的水固体比率 (W/S) 的纯泥 (PGS) 抽取能力对于煤矿废物处理至关重要. 理想的混合物 (n=0.4,W/S=0.18) 确保了出色的流动性和低血流,满足了送要求.
科学领域:
- 采矿工程 采矿工程 采矿工程
- 材料科学 材料科学 材料科学
- 流体力学 流体力学 流体力学
背景情况:
- 煤矿固体废物处理带来了环境和成本方面的挑战.
- 纯泥 (PGS) 往往表现出不良的抽取能力,阻碍其在填充作业中的使用.
- 提高PGS的抽取能力对于有效和可持续的矿山废物管理至关重要.
研究的目的:
- 确定最佳的颗粒大小分级和水固体比 (W/S) 以提高非水泥纯泥泥 (PGS) 的抽取能力.
- 为了研究各种混合比例下PGS的风湿性质,沉降,扩散流量和出血率.
- 为PGS的管道运输提供实验数据,并减少送摩擦.
主要方法:
- 塔尔博特分级理论的应用,用于设计PGS的粒子大小分布.
- 水固体比率 (W/S) 和分级指数 (n) 的系统变化.
- 试验测试的风湿性质 (收益应力),沉,扩散流量,和出血率.
主要成果:
- PGS表现出宾汉流体特征,随着W/S的减少,产量压力增加.
- 最佳流动性和最密集的颗粒包装是在0.4.4的分级指数 (n) 中实现的.
- 最佳的混合比例 (n=0.4,W/S=0.18) 产生了144.25 Pa的产量应力,255 mm的低落,60.1 cm的扩散流量和2.21%的出血率.
结论:
- 优化的PGS混合比例 (n=0.4,W/S=0.18) 成功地满足了送要求 (沉积量>180毫米,出血率<3%).
- 塔尔博特的分级理论有效地指导了可送泥的设计.
- 这些发现支持通过改进的PGS管道运输来实现煤矿固体废物的经济有效和环保处理.
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