Study on complex roof support technology of mining gateway in deep mine

In order to solve the difiultsupport problems of the mining gateway with the complex of in a deep mine shaft.based on the6o』 m level ar returning gateway in No.467134 coal mining face of Xiyi Mine as a study background,.the paper had an analysis on the defomation falre features fthe surounding rocks aongthe large cross section mining gateway with the complex of in the deep mine.wih the infuences of the high ground tress and mining dynamic pressure each rof would eaily cause the bed separation and the high sidewal feformation woud ifuence the stability of the roof.Therefore a control countermeasure of the high strengthand fil engthresin pre- stress bot suppor system was prowided and the selfdesigned low densityresin anchoring cardge appied.,Aresin ill length anchoring was elized. n combinaton with the sef made optical fier and optical grating dynamomery bolt.the stress features of the res n ll length anchoring bot vere analyzed during the heading process of the mining gateway.The engineering practices showed that thefall lngth of thefill anchoring resin bolt could cause a strong adhesion for:e.could effectively conrol the bed separation deformation of the complex roof and could keep the stability of the surounding rocks along the mining gateway