The new structure of fibre glass reinforced plastics bolt

The develop actuality and direction of FRP (fibre glass reinforced plastics) bolt in the world are analyzed. The new type structure of FRP bolt was designed. Trial data indicate that, all kinds of capability target of this FRP bolt all achieve and exceed the country stand-ard, substitute present metal bolt, wood bolt and bamboo bolt and other side bolt, it can gain magnitude technology and economy benefit. FRP bolt mechanization product line produce ef-ficiency is high, its throughput a day are 750 base, this can meet demand of hit-small mining company.     

快速推进综采工作面的顶板活动规律

在现场实测的基础上，分析了快速推进高产高效综采工作面的顶板活动特征和支架承载特性。研究结果对于高产高效工作面顶板事故的控制、支架合理选型及改善支架围岩关系具有重要意义。     

Determination of rational support parameters of bolting and shotcreting with wire mesh in soft roadway

Introduction The maintenance of the soft rock roadway is one of main factors that affect the high-production and high-efficiency of mine. The difficult reasons in main-taining this kind of roadway are the large deformation, unstable deformation and different deformation mechanism from other surrounding rock. Because the rock pressure behavior of soft rock engineering and its corresponding control measures are related with rock deformation, so supporting theories and control meth-ods based on t…     

湿式除尘器除尘机理的理论分析

对湿式除尘机理进行了理论分析,导出了湿式除尘器分级效率的计算公式．结果表明,影响湿式除尘器分级效率的主要因素是液气比和气液混合物的速度,为设计和研制高效湿式除尘器提供了理论依据．     

软岩巷道锚喷网支护参数的合理确定

通过对大量现场实测资料的分析，给出了软岩巷道围岩区域拉压变形机制以及应用压缩区域自承能力和控制张拉域变形的支护原理，针对不同尺寸的张拉域和压缩域，提出了采用深锚和锚杆群组合作用的锚喷网支护方法，介绍了不同支护工艺下支护参数的计算与选择。     

巷道围岩变形实测中一个问题的探讨

论文分析了巷道表面围岩变形的整体性,探讨了十字法观测中顶板下沉或底鼓曲线产生波动性的原因,并提出了观测工作的改进方法。     

综放工作面端面顶煤破坏机理及冒顶治理

采用现场观测及计算机数值模拟计算方法,研究综放工作面端面顶煤冒顶机理,得出后端面顶煤冒顶的主要影响因素是端面距大小、片帮范围和支架的初撑力,控制端面煤壁片帮是控制顶煤冒顶的有效措施.现场应用表明,在综放面向端面煤体打木锚杆是控制煤壁片帮的有效手段,通过实施该措施,端面煤岩体平均冒落高度由3.5 m下降到0.8 m,取得了显著的经济技术效益.