The invention provides a working face double-roadway tunneling small
coal pillar reinforcement construction method, and relates to the technical field of
coal mining and roadway support. The working face double-roadway tunneling small
coal pillar reinforcement construction method comprises the steps that double-roadway tunneling is arranged on a working face, and 3-5m small coal pillars are reserved between roadways; two-ended cables are installed on the small coal pillars, so that the coal pillars are in a three-dimensional stress state; grouting anchor rods are arranged on the two sides of the small coal pillars to control surrounding rock fractures, and the integrity of the coal pillars is ensured; suspension anchor cables are installed to reinforce the connection of the coal pillars and overlaying strata to prevent the coal pillars from slipping; a coal side is reinforced by concrete filled
steel tube tubular piers to improve the
carrying capacity of the coal pillars to control side bulging; and advance pre-roof-breaking pressure relief is carried out during the
stoping period, and the bearing pressure above the coal pillars is reduced. According to the working face double-roadway tunneling small
coal pillar reinforcement construction method, the stability of the small coal pillars in the tunneling and
stoping process is ensured, the problem of tense replacement of mine working faces can be solved through double-roadway tunneling, and the mining rate can be improved by arranging the small coal pillars; and in addition, the
bearing capacity of the small coal pillars is further improved, the long-term stability of the small coal pillars is ensured, and double-roadway tunneling of the small coal pillars is realized.