WangBingwen1, XiongTingyong1, LeiQiang1, 2, ZhangYi1, XiaoHongchao1, LiuJie1, 3. Stability analysis and treatment of multi-stage left goaf group in Linglong mining area[J]. Journal of Mining Science and Technology, 2019, 4(5): 425-433.
Citation:
WangBingwen1, XiongTingyong1, LeiQiang1, 2, ZhangYi1, XiaoHongchao1, LiuJie1, 3. Stability analysis and treatment of multi-stage left goaf group in Linglong mining area[J]. Journal of Mining Science and Technology, 2019, 4(5): 425-433.
WangBingwen1, XiongTingyong1, LeiQiang1, 2, ZhangYi1, XiaoHongchao1, LiuJie1, 3. Stability analysis and treatment of multi-stage left goaf group in Linglong mining area[J]. Journal of Mining Science and Technology, 2019, 4(5): 425-433.
Citation:
WangBingwen1, XiongTingyong1, LeiQiang1, 2, ZhangYi1, XiaoHongchao1, LiuJie1, 3. Stability analysis and treatment of multi-stage left goaf group in Linglong mining area[J]. Journal of Mining Science and Technology, 2019, 4(5): 425-433.
Toeffectivelycontroltheundergroundgoafandrealizetheconstructiongoalofnotailings, thestabilityanalysisandtreatmentofthemulti-stageleftgoafgroupinLinglongminingareawerecarriedout.Firstly,thestabilityoftheroofwasanalyzedbyusingthefixedbeamtheory,thesimplysupportedbeamtheoryandtheloadtransferintersectionlinetheory,andthestabilityofthepillarwasanalyzed according to the area bearing theory and pillar strength formula.Then,the distribution of the stressanddisplacementofsurroundingrockingoafwerestudiedbyusingFLAC3Dsoftware.Finally,accordingtothetheoreticalanalysisandnumericalsimulationresults,theremainingspacegroupswere dividedintothreegradesofstability,relativelystabilityandinstability,andthewholetailingscementationfillingtestwascarriedoutingoafG16,veinNo.47,veinNo.50andveinNo.47-1abandoned roadway.TheresultofresearchshowsthatgoafG9,G17andG26areinstablestate,whileseventeen goafssuchasG1,G2andG3areinarelativelystablestate.SixgoafssuchasG6,G7andG10arein aninstablestate.Theresultsofcementedfillingtestshowthatthebackfillhasgoodconsolidationeffect, andrealizetheundergroundsafedisposaloftailingsinmineralprocessing. Itisusefultocandesign reasonablemanagementplanaccordingtotheanalysisresultofgoafstability.
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