大倾角厚煤层开采不同采高与放煤步距的影响分析  

Analysis of the Influence of Different Mining Heights and Coal Drawing Steps on the Mining of Large Inclined Thick Coal Seams

作　　者：奚源远 Xi Yuanyuan(Jinneng Holdings Coal Industry Group Comprehensive Mining Office,Datong Shanxi 037000,China)

机构地区：[1]晋能控股煤业集团综采办公室,山西大同037000

出　　处：《山西化工》2024年第3期171-173,共3页Shanxi Chemical Industry

摘　　要：大倾角厚煤层是我国面临的重要的煤层开采形态,由于煤层的倾角较大,造成开采难度的增加。采用放顶煤综采过程中,不同的采高及放煤步距对顶煤的放出具有重要的影响作用。针对大倾角厚煤层开采过程中,不同采高及放煤步距对顶煤采出率的影响采用PFC仿真模拟的方式进行分析。建立了不同参数的开采模型,对开采过程进行仿真模拟,得到采高为4 m放煤步距为1.6 m(两采一放)的开采工艺为最佳的开采参数,此时顶煤的采出率最高,且具有较好的操作性。Thick coal seams with high dip angles are an important form of coal seam mining in China.Due to the large dip angle of coal seams,the difficulty of mining increases.During the process of fully mechanized top coal caving,different mining heights and coal caving steps have an important impact on the release of top coal.PFC simulation is used to analyze the impact of different mining heights and coal drawing steps on the top coal extraction rate during the mining process of large inclined thick coal seams.This paper established mining models with different parameters and simulated the mining process.The optimal mining parameters were determined to be a mining process with a mining height of 4 meters and a coal drawing step distance of 1.6 meters(two mining and one drawing).At this time,the top coal has the highest extraction rate and good operability.

关 键 词：大倾角厚煤层 放顶煤综采 采高 放煤步距 采出率 仿真分析 

分 类 号：TD82[矿业工程—煤矿开采]