典型文献
Fixed-length roof cutting with vertical hydraulic fracture based on the stress shadow effect:A case study
文献摘要：
Pre-driven longwall retracement roadway(PLRR)is commonly used in large mine shaft.The support crushing disasters occur frequently during the retracement,and roof management is necessary.Taking the 31107 panel as research background,the roof breaking structure of PLRR is analyzed.It is concluded that the roof cutting with vertical hydraulic fracture(HF)at a specified position,that is,fixed-length roof cutting,can reduce support load and keep immediate roof intact.The extended finite element method(XFEM)is applied to simulate hydraulic fracturing.The results show that both the axial and transverse hydraulic fracturing cannot effectively create vertical HFs.Therefore,a novel construction method of ver-tical HF based on the stress shadow effect(SSE)is proposed.The stress reversal region and HF orientation caused by the prefabricated hydraulic fracture(PF)are verified in simulation.The sub-vertical HFs are obtained between two PFs,the vertical extension range of which is much larger than that of directional hydraulic fracturing.The new construction method was used to determine the field plan for fixed-length roof cutting.The roof formed a stable suspended structure and deformation of the main PLRR was improved after hydraulic fracturing.
文献关键词：
中图分类号：
作者姓名：
Feiteng Zhang;Xiangyu Wang;Jianbiao Bai;Wenda Wu;Bowen Wu;Guanghui Wang
作者机构：
School of Mines,China University of Mining&Technology,Xuzhou 221116,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining&Technology,Xuzhou 221116,China
文献出处：
引用格式：
[1]Feiteng Zhang;Xiangyu Wang;Jianbiao Bai;Wenda Wu;Bowen Wu;Guanghui Wang-.Fixed-length roof cutting with vertical hydraulic fracture based on the stress shadow effect:A case study)[J].矿业科学技术学报（英文版）,2022(02):295-308
A类：
longwall,retracement,PLRR,HFs
B类：
Fixed,length,roof,cutting,vertical,hydraulic,fracture,stress,shadow,case,study,Pre,driven,roadway,commonly,shaft,support,crushing,disasters,occur,frequently,during,management,necessary,Taking,panel,research,background,breaking,structure,analyzed,It,concluded,that,specified,position,fixed,reduce,load,keep,immediate,intact,extended,finite,element,method,XFEM,applied,simulate,fracturing,results,show,both,axial,transverse,cannot,effectively,create,Therefore,novel,construction,SSE,proposed,reversal,region,orientation,caused,by,prefabricated,are,verified,simulation,sub,obtained,between,two,PFs,extension,range,which,much,larger,than,directional,new,was,determine,field,plan,formed,stable,suspended,deformation,main,improved,after
AB值：
0.489887
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