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

in order to solve the dificut suppot problems of the mnining gateway with the compiex roof in a deep mine shaf,.based on theS0 m level air returning gateway inNo.4671B4 coal mining face of Xey l ine as a studly background.,the paper had an analysis on the deformationfalure features ofthe surounding rocks alongthe large cross section mining gateway with the complex of in the deep mine With the nfuences of the high ground stress and mining dynamic pressure each roof would easily cause the bed separaton and the igh sidewal feformation would infuence the stailiy of th roof. Therefore a control coumermeasueof the high stengthand ful ength resin pre- stress bolt suppor system was provided and the self designed low densit resin anchoring carrdge appied.,Aresin ill length anchoring was elized. n conmbination with thesef made optical fber and opical grating dyrnamnometry bolt.the stress features of the res i ful length anchoring bot were analzed during the heading procss of the mining gateway. The engineering practices showed that thefill lngthof the ill anchoring resin bot could cause a strong adhesion force.could effectvely control the bed separation deformation of the complex roof and could keep the stability ofthe surounding rocks along the mining gateway