深海采矿船与扬矿管系统的耦合动力分析对采矿系统的研发应用具有重要意义.为了研究波浪引起的扬矿管和采矿船之间的耦合动力响应,采用等效截断设计原则,对扬矿管截断模型的弹性模量、轴向刚度以及单位长度质量等特征参数进行优选,得到了合理的截断模型参数.基于相似理论建立了深海采矿5000m扬矿管耦合动力学试验模型,解决了深海采矿系统在有限水深试验条件下进行模型试验的问题.同时开展了不同波高、不同波向角和不同矿仓质量下采矿系统模型的耦合运动试验,结果表明,波高、波向角和矿仓质量对耦合响应的幅值、耦合作用时间均有较大影响.该试验模型的建立,为后续管道稳定性和升沉补偿特性的研究提供了技术基础.

煤矿生产过程中会产生大量煤尘,抑尘剂的使用对抑制煤尘具有很好的效果.本文介绍抑尘剂开发与应用,通过分析抑尘剂的组成,对化学抑尘剂未来在煤矿中的应用提出相应建议.

In order to improve water quality monitoring efficiency and avoid wasting labor and energy resources,a water sampling and quality monitoring device is designed on basis of UAV technology. Statistics collected from the water-pump will be processed by the STM32 microprocessor in the UAV and then the results will be sent to the service terminal through GPRS network. The upper computer of the control terminal on the ground will receive the processed results and control the UAV in the meanwhile. Through experiments, it can be proved that the device can efficiently perform real-time water quality monitoring.