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1、煤炭工程第49卷第6期COALENGINEERINGVol?49,No?6doi:10?11799/ce201706001條帶式充填開采礦房煤柱設(shè)計方法研究1223王兵強,谷拴成,樊琦,李孝波(1?中煤科工集團西安研究院有限公司工程地質(zhì)研究所,陜西西安710077;2?西安科技大學建筑與土木工程學院,陜西西安710054;3?陜西彬長礦業(yè)集團有限公司,陜西咸陽712000)摘要:結(jié)合工程實例,探討分析深埋煤層條帶式充填開采礦房煤柱布置中巷道寬度,巷間煤柱寬度,巷間煤柱個數(shù)和隔離煤柱寬度等參數(shù)之間的相互影響關(guān)系,計算出巷間煤柱安全系數(shù)和隔離煤柱寬度及安全系
2、數(shù);對開采區(qū)間上方壓力拱穩(wěn)定性進行分析,得出壓力拱拱腹和拱腳是其穩(wěn)定性的關(guān)鍵,并計算拱腹和拱腳的安全系數(shù);根據(jù)條帶式開采布置方式推導(dǎo)出開采率和充填率的計算公式,并計算28種巷道和煤柱布置方案的開采率和不同充填系數(shù)下的充填率。最終,根據(jù)巷道寬度、巷間煤柱寬度和個數(shù)、隔離煤柱寬度、煤柱穩(wěn)定性、壓力拱穩(wěn)定性以及開采率和充填率等參數(shù)對28種布置方案進行比選,推薦滿足適用性、穩(wěn)定性和經(jīng)濟性的合理方案。關(guān)鍵詞:條帶式開采;壓力拱;礦房;煤柱;開采率+中圖分類號:TD822?3文獻標識碼:A文章編號:1671-0959(2017)06?0001?05Designmet
3、hodofminingroomcoalpillarinstripefillingmining1223WANGBing-qiang,GUShuan-cheng,FANQi,LIXiao-bo(1?EngineeringGeologicalResearchInstitute,CCTEGXi′anResearchInstitute,Xi′an710077,China;2?SchoolofArchitectureandCivilEngineering,Xi′anUniversityofScienceandTechnology,Xi′an710054,China;
4、3?ShaanxiBinchangMiningGroupCo.,Ltd.,Xianyang712000,China)Abstract:Theinteractionrelationshipbetweenparametersisdiscussedcombiningwithengineeringexample,forstripeminingminingroompillararrangementindeep-buriedcoalseam,includingroadwaywidth,widthandnumberofinter-roadwaycoalpillar,b
5、arriercoalpillarwidth.Theinter-roadwaysafetycoefficientwascalculated,sowasthebarriercoalpillarwidthandsafetycoefficient.Stabilityofminingintervalabovethepressurearchwasanalyzed,whichindicatedarchsoffitandfootofthepressurearchwerethekeytoitsstability,sothesafetycoefficientsofarchs
6、offitandfootwerecalculated.Accordingtothestripeminingarrangement,theformulasforproductionrateandfillingratewasdeduced,andtheminingrateunder28arrangementschemesofroadwayandcoalpillar,aswellasthefillingrateunderdifferentfillingcoefficientwerecalculated.Atlast,the28schemeswascompare
7、daccordingotroadwaywidth,widthandnumberofinter-roadwaycoalpillar,barriercoalpillarwidth,coalpillarstability,pressurearchstability,miningrateandfillingrate,etc.,andthereasonableschemewasrecommendconsideringapplicability,stabilityandeconomy.Keywords:stripemining;pressurearch;mining
8、room;coalpillar;miningrate井下充填尤其是矸石充填技術(shù)使