In order to master the influencing factors and on-site dust removal effect of air-water linkage dust removal device, so as to better apply to the actual field, based on the long pressing and short pumping ventilation dust control and removal system in fully mechanized heading face of coal mine, the influence law of the blade parameters of dust removal device, air intake volume and air inlet position on dust removal effect was systematically studied by numerical simulation and orthogonal experimental design analysis methods.The results showed that when the blade installation angle was 40° and the torsion angle was 4°,the negative pressure value and air inlet volume at the inlet of the dust collector were the largest, while the dust removal effect was better when the suction port was 5 m away from the heading face and the suction air volume was ≥300 m~3/min.After adopting the air-water linkage dust removal device in the dust control and removal system, the total dust removal efficiency of each measuring point increased by 40.8%～55.4%,and the dust removal efficiency of respirable dust increased by 31.4%～41.3%,so the application effect was good.

In order to reduce the dust disaster in the coal mine industry and reduce the probability of coal miners suffering from pneumoconiosis, the graft copolymerization method was adopted, and polyvinyl alcohol was used as the dust suppressant matrix material, under the action of an initiator and a cross-linking agent, 2-acrylamide-2-methylpropanesulfonic acid and acrylic acid are graft-copolymerized with a matrix to prepare a superabsorbent resin as a microcapsule core material. Using chitosan as the wall material, a new type of water-absorbing resin dust-suppressing microcapsules was prepared through the amine-aldehyde condensation of chitosan and glutaraldehyde. The encapsulation of water-absorbent resin and its microcapsules was determined by infrared spectrum analysis and scanning electron microscope. The swelling, moisture retention, wind erosion resistance, and biodegradability of the water-absorbent resin and its microcapsules were studied. The results showed that the microcapsules could swell up to 23 times, and the mass loss after 12 h was only 19.6 %. In the wind erosion resistance experiment, under the wind speed of 13 m/s, the dust suppression efficiency of the microcapsule dust suppressant is as high as 91.98 %, which inhibits the diffusion of coal dust. And after 22 days in the natural environment, the microcapsule dust suppressant can be degraded completely.

为了研究矿井无轨胶轮柴油车的排放,采集、记录了发动机CAN报文数据,基于传统车辆行驶工况合成的思路构建了井下车辆发动机瞬态工况.和道路车辆行驶工况进行对比发现,2种工况具有明显的差异,矿井的特殊道路条件决定了合成工况具有更大的平均转速以及升速和降速比例.该瞬态工况能为后期台架试验提供支持.

针对采煤机与液压支架相对位置精确检测问题,提出一种基于射频识别技术(RFID)的定位方法.该技术将RFID发射装置安装在采煤机上,将RFID接收装置安装在液压支架上,然后顺槽监控中心对接收装置接收到的射频信号功率进行计算和优化,转换为采煤机位置坐标,从而实现采煤机与液压支架相对位置精确定位.运用RFID定位技术于红柳林煤矿综采工作面进行试验验证,结果表明,该技术实现了采煤机与液压支架相对位置的精确定位,为液压支架自动跟机移架奠定良好基础.

无煤柱自成巷110工法因其采出率高、掘进率低的优点而得到了广泛应用,该工法中最为关键的技术之一是聚能爆破切顶技术.以红柳林煤矿44203工作面为研究对象,针对浅埋深厚煤层特性开展聚能爆破切顶研究.通过理论计算、现场试验确定了切顶高度、切顶角度和钻孔间距等关键参数.在此基础上进行了最佳装药结构试验,结果表明在孔深9 m、孔距500 mm的情况下"6+5+5+4+2"的装药结构效果最佳,裂缝率为88％,满足切顶留巷的技术要求.

以红柳林煤矿主斜井带式输送机智能分煤卸料需求为研究对象,运用Solidworks三维建模和有限元分析技术,设计出了带式输送机智能分煤系统.该系统由智能电气系统、防爆液压系统、斜闸门机械结构组成.满足了该主斜井带式输送机具备3种智能卸料方式的需求,有效地解决了主斜井带式输送机的卸料瓶颈问题,为增加运输系统运输量、充分释放产能奠定了基础.经过本系统的安装应用后,运输系统能力得到有效提升,经核算,每月累计增益约2980万元,对同类型问题的解决具有一定的借鉴意义.

为提高喷雾降尘器的防砸性和振动稳定性,针对其防护外壳进行结构设计,并采用ANSYS与型机测试相结合的方法,对其进行以工作环境为基础的动力学强度分析和模态分析,同时制作型机进行设备运转试验,分别在无外界干扰工作状态和井下作业环境进行喷雾测试和现场应用测试.结果表明:喷雾降尘器防护外壳仿真结果和型机试验都验证了设计的可靠性,为喷雾降尘器的结构设计提供了参考.

为治理煤矿岩巷掘进工作面的粉尘危害,以陕煤集团红柳林煤矿岩巷掘进工作面为工程背景,采用数值模拟的方法,分别对压入式和抽出式通风条件下的粉尘运移规律进行分析研究,并结合现场生产条件设计了抽出式通风除尘系统.实践表明:掘进机司机处总粉尘和呼吸性粉尘降尘效率分别达到96.01％、92.02％,机尾10 m处总粉尘和呼吸性粉尘降尘效率达到99.06％、97.47％,取得了显著的降尘效果.

大采高综采工作面生产效率高、产能大,粉尘污染问题严重.为解决大采高综采工作面现有喷雾降尘措施效果不佳的问题,以红柳林煤矿24205工作面为工程背景,在分析大采高综采工作面采煤机割煤产尘特点的基础上,通过高压喷雾降尘工艺参数优化,重点开展了采煤机高压外喷雾降尘技术、尘源跟踪喷雾降尘技术的应用研究,解决了喷嘴堵塞、喷雾量不足、喷雾射程短、覆盖面积小的问题,实现了滚筒割煤过程中尘源处的立体覆盖式喷雾.应用结果表明:采煤机司机处总粉尘和呼吸性粉尘平均质量浓度分别从1362.4、289.1 mg/m3降低到97.4、31.7 mg/m3,降尘效率分别为92.85％、89.02％;采煤机下风侧10 m处总粉尘和呼吸性粉尘平均质量浓度分别从456.8、97.3 mg/m3降低到45.1、9.7 mg/m3,降尘效率分别为90.13％、89.76％.工作面作业环境得到了明显改善.

简要论述了国内矿井巷道掘进临时支护技术的进展,分析了综掘机载式临时支护装置的主要构造、运行原理,将ZLJ-20机载式临时支护装置首次应用于红柳林煤矿北二盘区3-1煤回风巷煤巷掘进.应用表明:该装置能够显著提高锚护工作空间的安全,提升巷道的掘锚速度,实现了掘锚一体自动化作业,减少了人力劳动强度,简化了操作工序流程,可为今后类似工程施工提供参考.

针对厚煤层无煤柱自成巷开采技术实施过程中,采高大导致碎石帮变形难以控制的问题,以柠条塔煤矿S1201-II工作面为工程背景,采用理论分析和现场试验相结合的方法,建立了挡矸支护结构的受力分析模型,分析了碎石帮侧向压力的变化规律,并对滞后工作面不同距离的碎石帮进行了分区.提出了以"切顶护帮支架+可伸缩U型钢+金属网"为主的碎石帮控制措施.经现场实测,碎石帮控制效果良好.

In order to study the deformation law of the surrounding rock in gob-side entry retaining by roof cutting and pressure release in thick coal seams, in the engineering background of S1201-II seam face in Ningtiaota Mining, the deformation of the roof and floor in the roadway and the pressure distribution of the surrounding rock support were studied through field measuring and FLAC3Dnumerical simulation. The results show that the distribution law of the stability of the surrounding rock in thick coal seam can be divided into three stages:pressure change zone, pressure stabilization zone and pressure stabilization zone. During the forward direction of working face, the rated value was 9.19MPa, the stability value was 8.47MPa, the supporting pressure peak point away from the coal wall is 6~9m; the lagging working surface 200m was identified as conservative safe location, after this position, all the temporary support equipment can be withdrawn. As for within lagging working surface 90m surrounding rock deformation was obvious, this scope was the key support area to ensure production safety. The successful application of research results in the actual engineering of the site provides a useful reference for the popularization and application of gateway retained along goaf technology with roof breaking and pressure releasing in the thick coal seam.

文章介绍了综合机械化采煤的全过程以及采煤过程中的配套设备，同时也介绍了综合机械化采煤的设备配套要求，旨在为我国的采煤设备的合理配套提供一定的参考。