硅酸盐改性聚氨酯注浆材料在煤矿井下巷道加固中的应用冯志强

[e-mail]。DOI10．3969/j．issn．1001－5485．2013．10．0202013301099－103121．1000132．100013。2。TD32A1001－5485201310－0099－051。、。。。2。、。、、。、、、、、、、、。。30、、。。1。2。。。、、、WHO12、1。3。、。3010Vol．30No．10201310JournalofYangtzeＲiverScientificＲesearchInstituteOct．2013。、。2、。2．11Ｒ-A+H2O→Ｒ-B+CO2↑。2CO2+M2O+nH2O→M2CO3·nH2O。3M2SiO3+H2O→H2SiO3+MOHmH2SiO3+nH2O→mSiO2·nH2O。4xＲ-A+yＲ-B+zＲ-C→Ｒ-AxＲ-ByＲ-Cz。CO2。、2－3。2．2、、、、、、、、、、。2．2．1124h40MPa。2、、。3、、。4、。520%～30%。6。1。2．2．214h30MPa。3MPa。2AB、、。3s、、。1Table1Propertiesofpolyurethanegroutingmaterialmodifiedbysilicateforreinforcement/mPa·s/℃/min/℃24h/MPa24h/MPaA250～350B250～350＞190A∶B=1∶12～5＜95≥40≥3．500120133。4。5、、。6、、。2．3。2。2Table2Propertiesofpolyurethanematerialsmodifiedbysilicateforfillingandfoaming/mPa·s/℃/℃/sA20～40B100～200＞200A∶B=1∶1＜9530±1060±153033．1201072381#138m133m118～133m、、、。201071525350mm。138m500。F80。。3．23．2．1。4－6。3．2．2。。3．2．32。3．2．3．11。。。20m1．5m5m30°15°42mm。。。1。1Fig．1Layoutofboreholesforthefilling2。。。10m1．5m45°15°。5000～6000mm10110。2。2Fig．2Layoutofboreholesforthereinforcementabovetheroofcollapse3．2．3．2。510m3。5m4m0．5m8mm1m。8～9m10m。5m1m。3Fig．3Layoutofboreholesforpre-groutingreinforcement2。3．3。4。4Fig．4Effectofthegroutingreinforcementdisplayedbycoring。。、。5mKDVJ－400。5。5。52m4mFig．5Effectoffillinggroutingmaterialsat2mand4mawayfromtheorifice16m2m20m3t8t。2012013260m35t。3。4。41。2、。3。4AB1∶15%。5、、。1．J．2003526－2835．JIANGShuo-zhong．De-velopmentandProspectofChemicalGroutingTechniqueinChinaJ．JournalofYangtzeＲiverScientificＲesearchInstitute2003526－2835．inChinese2．J．201127948－51．SHANChang-bingLIUYuan-xue．PerformanceofPolyurethaneGrou-tingMaterialModifiedbySodiumSilicateJ．BuildingScience201127948－51．inChinese3．J．2010323375－380．FENGZhi-qiangKANGHong-pu．DevelopmentandApplicationofNewWaterproofGroutingMaterialsofPolyurethaneJ．ChineseJournalofGeotechnicalEngineering2010323375－380．inChinese4．C∥．2005．FENGZhi-qiang．MechanismofＲeinforcingtheCoalWallbyGroutingWoodenBoltC∥MiningEngineeringTheory．BeijingChinaCoalIndustryPress2005．inChinese5．J．20081032－3558．FENGZhi-qiang．AnalysisandApplicationofChemicalGroutingＲeinforcementMechanismtoBrokenCoalandＲockMassJ．CoalScienceandTechnology20081032－3558．inChinese6．M．2003．SHIYuan-weiNINGYuWEIJing-yun．PrincipleandTech-nologyofSurroundingＲockControlinCoalMiningLastVolumeM．XuzhouChinaUniversityofMiningandTechnologyPress2003．inChineseApplicationofPolyurethaneGroutingMaterialModifiedbySilicatetotheＲeinforcementofCoalMine’sＲoadwayFENGZhi-qiang121．CoalMining＆DesignDepartmentTiandiScienceandTechnologyCo．Ltd．Beijing100013China2．MiningDesignBranchChinaCoalＲesearchInstituteBeijing100013ChinaAbstractThepresentresearchisaimedatproblemsinthechemicalmaterialandthetechnologyofcoalrockmassreinforcementincoalminesofChina．Thereactionmechanismofpolyurethanegroutingmaterialmodifiedbysilicateisintroducedandthereinforcingpolyurethanegroutingmaterialandfoamingpolyurethanegroutingmaterialbothmodifiedbysilicatearedeveloped．Detailsoftheirperformancearepresented．Thematerialshavebeenappliedtofieldpracticeandareprovedtobesuperiorinthetreatmentofroadwayroofcollapseandthereinforcementofcrushedcoalandrockmass．Itcouldbeusedtoreplacethecurrentpolyurethanegroutingmaterialandprovidestechnicalsupportforthehighyieldandhighefficiencyofmoderncoalenterprises．Keywordsmaterialmodifiedbysilicategroutingreinforcementcrushedcoalandrockmassfillingandclosing30110