Structure for protecting stability of surrounding rock of development roadway and construction method

The invention discloses a structure for protecting stability of surrounding rock of a development roadway and a construction method. The structure for protecting the stability of the surrounding rockof the development roadway comprises a depressurizing roadway which is arranged between the boundary of a protective coal pillar of a current stope face and an auxiliary transport roadway, the depressurizing roadway communicates with an air return way and a haulage gate of the current stope face, and a presplitting tape is arranged on a roof of the decompressing roadway. The construction method ofthe structure comprises the following steps: determining the digging position of the depressurizing roadway between the boundary of the protective coal pillar of the current stope face and the auxiliary transport roadway; digging the depressurizing roadway along the direction which is parallel to the auxiliary transport roadway; supporting two surrounding rocks and the roof of the depressurizingroadway; when construction