极破碎顶板松软煤层支架选型及抱采工艺实践  

Practices on Hydraulic Powered Support Selection and Holding Mining Technology Applied to Seam with Extreme Broken Roof and Soft Coal

作　　者：倪建明[1] 李桂臣[2,3] 

机构地区：[1]淮北矿业股份有限公司,安徽淮北235000 [2]中国矿业大学矿业工程学院,江苏徐州221116 [3]淮北矿业股份有限公司博士后科研工作站,安徽淮北235000

出　　处：《煤炭科学技术》2012年第4期14-17,共4页Coal Science and Technology

摘　　要：为解决极破碎松软厚煤层工作面煤壁片帮和架前端冒顶难题,以芦岭煤矿极松软9煤综放开采为工程背景,分析了传统综放开采工艺特点,结合现场工程实践,研究了无梁端距抱采放顶煤工艺,其特点是通过加长顶梁实现无梁端距条件下采煤,设置800 mm伸缩梁保证超前支护,借助铲煤板铲平顶煤,带压移架,充分利用煤壁片帮进行采煤。针对此工艺特点,提出了该回采工艺合理的"三机"配套技术,并在芦岭煤矿特定地质条件下开展工业性试验,煤炭月产量达10万t,效果良好。In order to solve the problems of the coal mining wall spalling and the roof falling at the front of the powered support in the coal mining face in an extreme broken and soft seam, taking the fully mechanized top coal caving mining in No. 9 extreme broken and soft seam as an engineering background, the paper analyzed the features of the conventional fully mechanized top coal caving mining technique. In combination with the site engineering practices, a study on a holding mining top coal caving mining technique with non beam distance was conducted. The features would be that with the length expansion of the powered support beam, thus a coal mining operation could be con- ducted under the non beam end distance. The expansion beam with a distance of 800 mm could ensure the pilot support. With the spade plate to level the top coal and the powered supports moved forward with pressures, the coal wall spalling could be applied for coal mining. According to the echnioue feafures, the rational three machines matched technology was provided for the coal mining technique and applied to the industrial trial in Luling Mine under the special geological conditions. The coal production of the coal mining face could be reached at 100 000 t per month with good benefits.

关 键 词：极破碎顶板 松软煤层 抱采放顶煤工艺 液压支架 

分 类 号：TD823[矿业工程—煤矿开采]