Application of the construction technology of metro shield disassembling chamber in Xinjing Coal Mine
WU Zhiqi
Abstract：In coal mine shaft,the roadway constructed by metro shield can not be excavated chamber to disassemble main body of metro shield directly from the ground as in subway construction.If the con-struction of the disassembly chamber is carried out behind the metro shield,the blasting will cause damage to the equipment when the roof ripping is raised and the side is enlarged,and the support in the roadway will cause damage to the shield body when the metro shield is backing up.In addition,the metro shield can not directly construct the large section of the dismantling chamber,only through the new excavation of a service roadway to bypass the metro shield body to excavate a 50 m dismant-ling chamber in front of the cutter,this method requires additional transport system,and the service roadway will be abandoned after the dismantlement of the metro shield.Taking the dismantling cham-ber construction of Xinjing Coal Mine as the research background,the new design idea was applied to solve the construction problem of the dismantling chamber of the metro shield.Without the construc-tion service roadway,only to continuously excavate in the roadway of the metro shield construction,and the metro shield tunneling combined with ordinary drilling and blasting method was used to con-struct the dismantling chamber of the metro shield.After the dismantling of the shield machine,the transportation system established on the original roadway could be used for transportation.
Keywords：metro shieldmain body disassemblydismantling chambercoordinating constructiondrilling and blasting method construction
Publication Date：2024-06-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 50-53 )