检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:李贤忠[1,2] 林柏泉[1,2] 扬威[1,2] 倪冠华[1,2] 李全贵[1,2]
机构地区:[1]煤炭资源与安全开采国家重点实验室,江苏徐州221116 [2]中国矿业大学安全工程学院,江苏徐州221116
出 处:《煤矿安全》2013年第4期84-87,共4页Safety in Coal Mines
基 金:国家重点基础研究发展计划(973计划)资助项目(2011CB201205);国家自然科学基金资助项目(51074161);中国矿业大学煤炭资源与安全开采国家重点实验室自主研究基金资助项目(SKLCRSM08X03)
摘 要:针对平煤集团十二矿己15煤层高瓦斯、高应力、低透气性的现状,利用多参数协同原理,建立了局部卸压与区域卸压相结合的瓦斯治理协同控制模型,采用有限元分析软件模拟分析了爆破后爆轰波传播、地应力变化分布规律,开发了高位爆破(穿层深孔水压控制爆破)+低位爆破(专用卸压巷道深孔控制爆破)的高低位爆破"两位一体"技术。研究表明:控制孔与爆破孔间距为0.6 m时,控制孔周围产生最大拉裂破坏,起到定向控制爆破的作用;爆破力和水力优势叠加,使卸压增透效果较普通爆破明显提高;高位和低位措施配合使影响半径相互重叠,消除了存在瓦斯动力灾害危险的"空白带"。For the status of high gas contents,high stress and low-permeability of Ji15 seam of No.12 Coal Mine in Pingmei Group,the gas cooperative control model combined local pressure-relief with regional pressure-relief was established based on the theory of multi-parameters cooperative.The laws of detonation wave propagation and ground-stress change distribution were simulated by means of the finite element analysis software.The technology of high-low-blasting,composed of high blasting(deep crossing hole controlled hydraulic blasting) and low blasting(special roadway deep hole controlled blasting) was developed.The research showed that maximum tension fracture failure was produced around control hole when the distance between control hole and blasting hole is 0.6 m.,and it resulted in directional and controlled blasting.The theory made advantage superimpose for blasting force and hydraulic force,which raised the effect of pressure relief and permeability enhancements compared with general blasting.High blasting influence radius and low blasting influence radius superimposed with each other,which prevents gas dynamic disaster.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:18.225.56.198