采煤工作面轻型架间挡矸装置研究  

Research on lightweight device for blocking gangue between hydraulic supports in steeply inclined coal face

作　　者：曹树刚[1] 李毅[1] 雷才国[2] 刘富安[3] 

机构地区：[1]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044 [2]川煤集团芙蓉公司,四川宜宾644000 [3]四川华蓥山广能集团公司,四川华蓥638600

出　　处：《采矿与安全工程学报》2013年第1期51-56,共6页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51074197)

摘　　要：在大倾角、急斜煤层真倾斜或伪倾斜布置走向长壁综合机械化开采工作面,架间挡矸装置是防止顺工作面煤、矸飞窜伤人和毁坏设备的重要保证。通过大量的调查研究和方案比较,研制了带金属网的四门组合的轻型架间挡矸装置。该装置采用滚珠式滑动系统、对称式设计和变化门框尺寸,增大了对煤层倾角变化和采高变化的适应性,能满足工作面推进方向换向需求。数值模拟结果表明:该装置能满足一般煤(矸)防护的强度要求;导轨、滑轮和限位轨构成的滑动系统的灵活度高,利用手动控制拉门的关闭,避免了原有架间挡矸装置靠液压控制可能失效的问题;挂门、拉门采用带金属网的框架结构,减小了工作面的局部通风阻力,有利于保持工作面通风的平稳性。现场试验表明,相对于原有平板式架间挡矸装置而言,轻型架间挡矸装置重量减轻约2/3,且运输、安装和维修方便。The device for blocking gangue between hydralic supports is the important guarantee to avoid the situation that coal and gangue slide down to hurt people and destroy equipment, when assign- ing fully-mechanized longwall face on the strike with true-inclined or false-inclined layout in the steeply inclined coal seam. In this paper, based on assive investigation and plan comparison, a light-weight de- vice for blocking gangue with metal net and four-door combination has been developed. The device in- creases the adaptability to the changes of dip angle and mining height of coal seam, and can change the advance directions of working face, by using the sliding system of ball bearing type, symmetric design and changeable size of doorframe. The numerical simulation results show that the device can meet the needs to prevent coal and gangue, the sliding system composed of guide rails, rollers and limit rails pre- sents high flexibility, and can avoid the problem that the device for blocking gangue may fail to work under hydraulic control, after adoting manual control to close sliding door. In addition, when usingmetal-net frame structure in the hanging door and sliding door, can reduce the local ventilation resis- tance of working face, and is helpful to the ventilation stability of working face. Field tests indicate that the weight of light-weight device for blocking gangue between supports is reduced two thirds of that of the previous planer device for blocking gangue, and it is convenient to transport, install and maintain.

关 键 词：采矿工程 长壁开采 架间 挡矸装置 金属网 

分 类 号：TD355[矿业工程—矿井建设]