坚硬厚煤层综放采场顶煤破裂特征的实测分析  

Site Measurement Analysis on Top Coal Fracture Features of Fully Mechanized Top Coal Caving Mining Face in Thick Hard Seam

作　　者：刘跃俊[1] 刘长友[1] 王美柱[1,2] 吴晓东[1] 滕向东[1,3] 

机构地区：[1]中国矿业大学矿业工程学院,江苏徐州221008 [2]中国矿业大学出版社,江苏徐州221008 [3]兖州矿业集团有限责任公司济宁二号井,山东济宁227005

出　　处：《煤炭科学技术》2010年第5期20-23,共4页Coal Science and Technology

基　　金：国家自然科学基金资助项目(50774079)

摘　　要：基于综放采场顶煤体在支架上方裂隙发育程度和破碎特征,为确定综放开采顶煤冒放性和合理的放煤参数提供依据。在综放面支架上方打穿煤层钻孔,采用钻孔摄像仪记录顶煤裂隙的发育情况。从钻孔摄像中取得的影像资料出发,分析了支架上方特厚坚硬顶煤沿厚度方向的破碎特征,进而分析了其破碎机理,并提出了合理的放煤参数,为特厚坚硬煤层综放开采进一步提高顶煤采出率提供技术支持和依据。Based on the fissure development degree and fracture features of top coal above the hydraulic powered supports in the fully mechanized top coal caving mining face,in order to provide the basics to set up the rational top coal caving parameters for the fully mechanized top coal caving possibility,borehole drillings were conducted in the top coal seam above the hydraulic powered supports of the fully mechanized top coal caving mining face.A borehole camera had recorded the fracture development.Based on the image information from the borehole camera,the paper analyzed the fracture features of the ultra thick hard top coal above the hydraulic powered supports along the thickness direction and further analyzed the fracture mechanism.The paper provided the rational coal caving parameters,which could be the basics to further improve the top coal mining rate from the fully mechanized top coal caving mining in the ultra thick hard seam.

关 键 词：坚硬厚煤层 顶煤破裂 钻孔摄像仪 放顶煤 冒放性 

分 类 号：TD323[矿业工程—矿井建设]