山西煤炭
山西煤炭
산서매탄
SHANXI COAL
2011年
10期
36-38,41
,共4页
煤柱尺寸%理论计算%数值模拟%实测
煤柱呎吋%理論計算%數值模擬%實測
매주척촌%이론계산%수치모의%실측
pillar size%theoretical calculation%numerical simulation%field measurement
在分析经验法、现场实测法、理论计算法和数值模拟确定煤柱尺寸优缺点的基础上,提出了利用理论计算、现场实测和数值模拟分析相结合的方法来确定软煤层大采高工作面回采巷道的煤柱尺寸,并根据晋煤集团赵庄矿3305软煤层大采高工作面生产实际,依照理论计算法求出煤柱留设尺寸,然后对巷道开挖前后不同煤柱尺寸下的围岩应力、变形进行了数值模拟研究。最后,结合现场实测数据得出了巷道围岩变形、煤柱受力与煤柱尺寸之间的关系,确定了该工作面煤柱留设的合理尺寸。实践证明,在理论计算的基础上结合数值模拟分析和现场实测是确定软煤层大采高工作面煤柱尺寸的一种合理有效的方法。
在分析經驗法、現場實測法、理論計算法和數值模擬確定煤柱呎吋優缺點的基礎上,提齣瞭利用理論計算、現場實測和數值模擬分析相結閤的方法來確定軟煤層大採高工作麵迴採巷道的煤柱呎吋,併根據晉煤集糰趙莊礦3305軟煤層大採高工作麵生產實際,依照理論計算法求齣煤柱留設呎吋,然後對巷道開挖前後不同煤柱呎吋下的圍巖應力、變形進行瞭數值模擬研究。最後,結閤現場實測數據得齣瞭巷道圍巖變形、煤柱受力與煤柱呎吋之間的關繫,確定瞭該工作麵煤柱留設的閤理呎吋。實踐證明,在理論計算的基礎上結閤數值模擬分析和現場實測是確定軟煤層大採高工作麵煤柱呎吋的一種閤理有效的方法。
재분석경험법、현장실측법、이론계산법화수치모의학정매주척촌우결점적기출상,제출료이용이론계산、현장실측화수치모의분석상결합적방법래학정연매층대채고공작면회채항도적매주척촌,병근거진매집단조장광3305연매층대채고공작면생산실제,의조이론계산법구출매주류설척촌,연후대항도개알전후불동매주척촌하적위암응력、변형진행료수치모의연구。최후,결합현장실측수거득출료항도위암변형、매주수력여매주척촌지간적관계,학정료해공작면매주류설적합리척촌。실천증명,재이론계산적기출상결합수치모의분석화현장실측시학정연매층대채고공작면매주척촌적일충합리유효적방법。
On the analysis of strengths and weaknesses of coal pillar size measurement though some methods as experience method,field measurement method,theoretical calculation and numerical simulation,the pillar size of large-mining-height working face among soft seams were determined.According to the real situation of No.3305 soft seam of Zhaozhuang Mine and the theoretical calculation,the pillar retained sizes were also determined,and then the surrounding rock stress and deformation were studied through numerical simulation.At last,the relationship were concluded by the field data between surrounding deformation,pillar load and pillar size.The rational pillar retained size was determined.The practice proved the approach to be reasonable and effective.
