简介:【摘要】 竖井多绳摩擦提升机更换首绳是矿山机电专业大型施工项目,其技术含量高,安全风险大,施工工艺复杂。针对赤峰柴矿提升系统的工况,介绍一种“以旧带新”的首绳更换工艺方法及安全措施,该工艺能极大的减轻换绳工作强度,缩短换绳时间,降低安全风险,取得较好经济效益和社会效益。
简介:ANINFERENCEOFTHETEMPERATUREINTHE13THCENTURYOFCHINAZhangDe’e(张德二)CenterforClimaticResearchEXTENDEDABSTRACTSincethethermaloptim...
简介:随着微型计算机在工业系统中的广泛应用,全电子计算机联锁系统作为铁路信号控制的新一代联锁设备应运而生并得到逐步推广使用。本文结合黄陵矿区铁路专用线计算机联锁系统的使用现状,对目前使用的两种联锁设备系统进行比较分析。
简介:The13November2016KaikouraearthquakeoccurredinthenortheasterncoastalregionoftheSouthIsland,NewZealand.TheMw7.8mainshockgeneratedacomplexpatternofsurfaceruptures,andwasfollowedwithinabout12hoursbythreemoderateshocksofMw≥6.0.HereweuseteleseismicwaveformstoinvertforthesourceruptureoftheKaikouraearthquake.Theresultingslip-distributionmodelexhibitsinsignificantslipnearthehypocenterandthreepocketsofmajorslipzoneswithdistinctsensesofmotion.Themainshockstartedfromarupturenearthehypocenter,grewintothrustonshallowcrustalfaults~50kmnortheastofthehypocenter,andthendevelopedintotwoslipzones:adeeperonewithobliquethrustandashalloweronewithalmostpurelyright-lateralstrike-slip.Locationsofthethrustandstrike-slipmotionsintheslip-distributionmodelagreewellwithreportedcoastalupliftsandhorizontaloffsets.Theoverallslippatternisdominatedbyhorizontalmotion,especiallyatshallowdepth,duetothepartitioningofthrustandstrike-slipmotionsabovethesubductionzonemegathrust.Aftershockdistributionsuggeststhatmostaftershockstendtooccurneartheedgesofthemajorslipzonesofthemainshock.Thisobservationonaftershocklocationsmayprovideusefulinformationforseismichazardassessmentsafterlargeearthquakes.