煤矿千米深井围岩控制及智能开采技术构想

437Vol．43No．720187JOUＲNALOFCHINACOALSOCIETYJuly2018．J．20184371789－1800．doi10．13225/j．cnki．jccs．2018．0634KANGHongpuWANGGuofaJIANGPengfeietal．Conceptionforstratacontrolandintelligentminingtechnologyindeepcoalmineswithdepthmorethan1000mJ．JournalofChinaCoalSociety20184371789－1800．doi10．13225/j．cnki．jccs．2018．063412312312345554671．1000132．1000133．1000134．1000835．2210086．4540037．232170。、、。4350m。、“”、、“”。、、、。——TD82A0253－9993201807－1789－122018－05－112018－06－192017YFC0603000517041601965—。[e-mail]ntrolandintelligentminingtechnologyindeepcoalmineswithdepthmorethan1000mKANGHongpu123WANGGuofa123JIANGPengfei123WANGJiachen4ZHANGNong5JINGHongwen5HUANGBingxiang5YANGBaogui4GUANXuemao6WANGZhigen71．CoalMiningandDesigningDepartmentTiandiScienceandTechnologyCo．Ltd．Beijing100013China2．CoalMiningandDesigningBranchChinaCoalＲesearchInstituteBeijing100013China3．StateKeyLaboratoryofCoalMiningandCleanUtilizationBeijing100013China4．ChinaUniversityofMining＆TechnologyBeijingBeijing100083China5．ChinaUniversityofMiningandTechnologyXuzhou221008China6．HenanPolytechnicUni-versityJiaozuo454003China7．XinjiEnergyCo．Ltd．ChinaNationalCoalGroupCorp．Huainan232170ChinaAbstractDeepresourcedevelopmentisanimportantareaforChinesefuturescientificandtechnologicalresearchanddevelopment．Inthispaperthecurrentstatusofstratacontrolandintelligentminingtechnologyforcoalmineswithadepthmorethan1000misevaluated．Withthefocusesonthethemeofsafeandefficientminingactivitytakinginto201843considerationoftheinteractionbetweenentryexcavationandcoalextractionsomekeyscientificissuesandtechniqueconceptionsareproposedaimingtoincreasethelengthoflongwallfaceachieveintensiveproductionreducetherateofexcavationandincreasecoalrecoveryrate．Therearefourkeyscientificissues1thelarge-deformationmechanismofroadwayswithadepth1000mandabove2thecooperativecontrolprincipleof“bolting-grouting-destressing”fortherocksurroundingaroadway3theevolutionmechanismofstressesandoverlyingstructureof350mextra-longlongwallfaceand4multi-informationintegrationintelligentminingmodeforextra-longlongwallface．Thesekeysci-entificissueswillprovideatheoreticalbasisforstratacontrolandintelligentminingindeepcoalmines．Basedonthecharacteristicsofhighin－situstressesandstrongmininginducedstressessufferedbycoalmineroadwaysat1000mdeepandaboveacooperativecontroltechnologycalled“bolting-grouting-destressing”isproposedtoachieveanactivesupportbymeansofacombinationofrockboltswithhighprestressedhighstrengthandhighimpacttoughnesshigh-pressuresplitgroutingandmodificationofbrokenrockmassandactivedestressingusinghydraulicfracturing．Itisex-pectedthatthistrinitytechnologycansolvetheproblemofstratacontrolforcoalmineroadwaysat1000mdeepandabove．Basedonthecharacteristicsofpartitionbreakingofoverlyingstrataanddynamicmigrationofgroundpressuresduringcoalminingprocessinextra－longlongwallfaceat1000mdepththeanti-impacttechnologyforhydraulicshieldsisdeveloped．Theself－adaptationgroupcooperativecontroltechnologyandequipmentwithmulti-informationintegrationanti-impacthydraulicshieldsandsystematicallyintegratingshearerandotherequipmentsusedinlongwallface．Inthiswayacompletetechnologysystemofintelligentminingwillbeformedforextra-longlongwallfaceat1000mdepthaimingtoprovidetheoreticalandtechnicalsupportsforthesafeefficientandhigh-recoveryminingofdeepcoalresources．Keywordscoalmineswithdepthmorethan1000mstratacontrolbolting-grouting-destressingextra-longfacein-telligentmininghydraulicshieldgroupcooperativecontrol1。2000m5.9t1000m50%2－3。、。、、、4－51、6、。7。8、。“”。1Fig.1Severedeformationofa1000mdeeproadwayKouzidongCoalMineXinji11.1。。1750mGTAU、、、。92。30m2、、。、09717600m、。、。。2+U+Fig.2AroadwaysupportsystemconsistingofrockboltsU-shapedsteelarchesandbackfill。300m。、10－11。2080。“、”、“”。、12－16、17－18。19、。。、20。。1.2。、、。600m、6.0mIMSC。LASC。“”、3、21。3“”Fig.3Intelligentminingsystembasedonvisualremoteintervention1.3、1、。2。。31971201843、、。。2、350m、“”、、、、——“”。、34。①②、“——”“”③④。、、——。5。4Fig.4Schematicdiagramofgroundcontrolfor1000mdeeproadwayandintelligentmining5Fig.5Ｒesearchframeworkofgroundcontrolfor1000mdeeproadwayandintelligentmining33.1、22、。、。、4。、、。、6、、。7。。、、29717。6Fig.6Conceptualmodelshowinglateral-unloadingandvertica-loadingstresspathduringroadwayservicelife7Fig.7Ｒoadwaydilationcausedbydeviatoricstress3.2——、、“”“”。。。。、、、23－26。8、、、、。16～25mm10kN500N·m400kN500kN11000J。。8Fig.8Comprehensivetestingrigforrockboltmechanicalperformances、9。。、、、。9Fig.9Schematicdiagramoftestingrigformechanicalperformancesofrockboltingsurfacecontrolcomponents、、、。“——”1011。397120184310Fig.10Ｒealthree-dimensionaltestingsystemforspiltgrouting11Fig.11Fracture-evolutionandgrout-flowmodelσ1—σ2—σ3—σn—τ1—τ2—n—Er—μr—l—h—w—Ks—Kn—δe—δ—εf1—εf2—、27－30。。、、、。、。－－、、、、。－－、－－。、、、－－。－－12。12－－Fig.12Schematicdiagramofcollaborativegroundcontrolusing“bolting-grouting-destressing”technology3.3、、。。350m。。13。、、、。“－”。4971713Fig.13Physicalmodelandtemperaturefieldonmodelsurface14。。14Fig.14Schematicpartitionbreakingofrooflayersabovemined-outareaofextra-longlongwallfaceat1000mdepth3.4、。、、、。、、、、、、、、、、15。、。15Fig.15Evaluationinde