短壁综放工作面三机配套应用的优化

介绍了新矿集团通过使用短壁采煤机、液压支架和刮板输送机,进行短壁综放工作面三机配套的实践,指出了存在的问题。经过优化的三机配套方案后,新矿集团的各生产矿井的短壁综放工作面均实现了高产,取得了较好的经济效益。     

An investigation of spark discharge parameters for material processing with high power ultrasound

High power ultrasound (HPU) generated using pulsed-power techniques provides an alternative method for treating ores and minerals prior to extraction processes and for the comminution of waste materials as part of a recycling process. In an earlier publication [Wilson, M.P., Balmer, L., Given, M.J., MacGregor, S.J., Mackersie, J.W., Timoshkin, I.V., 2006. Application of electric spark generated high power ultrasound to recover ferrous and non-ferrous metals from slag waste. Minerals Engineering 19, 491–499], preliminary results using the HPU technique to treat stainless steel slag and waste bottle glass were reported. This paper describes further work performed on stainless steel slag to determine the likely energy costs associated with HPU processing. In industrial applications of HPU it is important to optimise the parameters of the high-voltage (HV) spark discharge causing the shock wave in the working liquid to maximise the efficiency of the treatment. However, because of the high intensity of the shock wave it is difficult to measure its output close to the HPU source. Experiments have therefore been performed using Pinducer sensors to measure the pressure waves produced by the source at distances relatively far from the spark discharge. These measurements made in the far field have been correlated with the electrical energy provided to the discharge and treatment rates for stainless steel slag and bottle glass obtained under identical conditions.     

严重突出矿井采掘部署编制探讨

根据松藻三联煤业有限公司渝阳煤矿采掘生产部署现状,分析了严重突出矿井采掘生产部署与地质条件、瓦斯治理之间的关系,探讨了严重突出矿井采掘生产部署编制中应重点注意的问题,并就渝阳煤矿采掘生产部署的编制提出一些建议。     

超大模数齿轮齿形加工技术应用

利用大模数盘形齿轮铣刀(粗铣齿)+数控镗铣床(插补粗铣、半精铣齿形)+数控成型磨齿机(磨齿)加工超大模数齿轮,不但可以保证加工质量,而且可以减少齿轮加工刀具库存,降低工艺成本。     

气动潜孔锤跟管钻进技术在岩土工程勘察施工中的应用

以渤船重工新型总装生产线工程岩土工程勘察项目为依托,应用KG940A型高风压履带式潜孔钻车﹑采用气动潜孔锤跟管钻进工艺,结合空气正循环排渣方式,摸索总结出一套针对复杂破碎覆盖层的干式成孔新方法,钻进效率及钻孔质量显著提高,为岩土工程勘察勘探孔施工增添了一种新的思路。     

锚网索-M5钢带联合支护在巷道过断层中的应用

结合国投新集能源股份有限公司刘庄煤矿11-2煤赋存特点,对东三采区回风一大巷进行了综掘工艺设计,介绍了综掘过断层的施工技术,特别对锚网索—M5钢带联合支护技术在巷道过断层、石门穿煤层以及施工大跨度交岔点中的应用做了重点介绍。     

伪倾斜柔性掩护支架在煤矿生产中的应用

国家2008年末取消仓储采煤法等非正规采煤方法。当前全国急倾斜正规的采煤方法比较少,柔性掩护支架采煤法在建设煤矿的应用为取消仓储采煤法等非正规采煤方法摸索出一条理想的解决途径。     

新型弧形齿扁平接链环与国内外同类产品的比较

通过对新型弧形齿扁平接链环与国内外同类产品在结构、材料、加工工艺和质量性能等方面的比较,表明其综合性能和质量在国内是领先的,并接近国外同类产品的水平.     

大倾角软厚煤层巷道围岩控制技术探讨

以孟家窑11505胶带顺槽为工程实例,探讨大倾角软厚煤层巷道稳定性控制方法;在分析巷道顶板和两帮受力的基础上,拟采用留设巷间煤柱和锚杆索联合支护方式;工程实践表明,在留设30 m煤柱和采用高强度锚杆索联合支护后,巷道顶板下沉量保持在15 mm,两帮移近量稳定在26 mm;巷道整体受力平稳且完整性良好,为11505工作面...     

大倾角炮采放顶煤矿压显现特征

通过对郑煤集团芦沟煤矿首个大倾角炮采放顶煤工作面进行矿压观测和数值模拟,分析得出大倾角炮采放顶煤工作面在开采过程中支架阻力为降阻状态分布,倾向支承压力两端高、中间低呈"马鞍形",且区段轨道平巷支承压力峰值明显高于区段回风平巷,维护困难。