综放工作面回风巷底鼓机理与治理技术  

Mechanism and Control Technology of Floor Heave at Return Airway at Fully Mechanized Caving Face

作　　者：郑祥举[1] 曹惊 陈梁[3,4] 李小龙[3,4] 石超弘 刘涛[3,4] 

机构地区：[1]山西潞安环保能源开发股份有限公司常村煤矿,山西长治046102 [2]陕西煤业化工集团有限责任公司,陕西西安710065 [3]中国矿业大学矿业工程学院,江苏徐州221116 [4]深部煤炭资源开采教育部重点实验室,江苏徐州221116

出　　处：《煤矿安全》2014年第11期193-195,199,共4页Safety in Coal Mines

基　　金：江苏高校优势学科建设工程资助项目(SZBF2011-6-B35);国家重点实验室自主课题资助项目(SKLCRSM11X02)

摘　　要：为了有效解决常村矿回采巷道底鼓问题,通过分析巷道围岩变形机理及破坏特征,提出了钻孔卸压和钻孔卸压+混凝土反拱+底板锚杆联合支护2种优化方案。现采用FLAC3D软件进行数值模拟,并分析比较了模拟塑性区、位移场的变化情况,对2种优化方案的支护效果进行验证。现场实测数据表明:在采用钻孔卸压+混凝土反拱+底板锚杆联合支护方案后,最大底鼓量为146 mm,仅为原有最大底鼓量的23%,因此达到了控制围岩变形和治理巷道底鼓的效果。In order to effectively solve the problem about floor heave of rectangular roadway in changcun Coal Mine, by analyzing the deformation mechanism and failure characteristics of surrounding rock of roadway, we propose two schemes including drillhole pressure relief and drillhole pressure relief ＋ inverted arch of the concrete ＋ floor anchor. In this article, the change of plastic area and dis- placement field on two supporting schemes were compared by FLAC3D numerical simulation. By comparing the pristine roadway deform- ation, the maximum floor heave amount is 146 mm which is only 23% of the original roadway deformation amount by using the scheme of drillhole pressure relief ＋ inverted arch of the concrete ＋ floor anchor. So, combined supporting method can control deformation of roadway and floor heave effectively.

关 键 词：底鼓 变形机理 数值模拟 联合支护 综放工作面 

分 类 号：TD327.3[矿业工程—矿井建设]