In the passionate November，In Hanjiawan Coal Company，As the last hydraulic support of the 214202 fully mechanized mining face is slowly pulled out of the retreat channel，The installation team only took 10 days，Successfully completed the equipment recall task，One week ahead of schedule。
“The 214202 fully mechanized mining face that was withdrawn this time has a long transportation distance，The tail return section is adjacent to the 110 construction method lane intersection，High pressure on top plate，The stroke of the end frame is less than 300mm..."The final mining stage of the working face，The company attaches great importance to it，Based on the procurement situation、Roof pressure monitoring and periodic pressure data, etc.，Tissue engineering technicians conduct technical consultation，Accurately formulate response and preventive measures。
4 retracement seminars were held in the early stage of the working surface retracement，Pressure control management around the M88 gameroof、On-site risk control、Personnel Labor Organization、Eight aspects including equipment transportation routes、32 business schedules in reverse order、Implementing responsibilities，Strict supervision, tracking and assessment，Ensuring that retracement is foolproof。
“The height of the front channel of the 85# to 95# bracket is sunk 50mm、The front end of the 145# to 155# brackets has sunk 30mm..." The business backbones of the Production Geometry Technology Management Center took turns to stay at the work site，Record in detail the pressure changes after each shift，Provide technical support for accurate prediction and adjustment of mining height in the next step。
The company’s leaders have led teams to the site many times，There is a lot of pressure on the retracement channel、The roof of the tail return section continues to sink，Promptly adjust the channel reinforcement and support plan，Make sure to be under "heavy pressure"，Steady the top plate、Ensure safety。
According to statistics，57 individual reinforcement supports were installed inside the retracement channel，Erection of 32 single and wooden pillars at the tail return intersection section，Adopt a plan to adjust the advanced hydraulic support at the tail section of the lagging retraction machine，The top plate that stabilizes the nose M88 appsection of the tail section，Under a series of measures to stabilize and strengthen support，The retracement channel and the subsidence of the tail section roof are effectively controlled。
After the working surface is accurately penetrated，The installation team seizes the opportunity，Quickly organize workers to participate in the "Three Machines" retracement battle，Faced with cumbersome intelligent supporting monitoring and control equipment，Focus on the recycling of cables and supporting small equipment，It only took 3 days to open the "gate" restricting both ends of the retracement channel，For the later withdrawal of coal machine、Chute、Hydraulic support wins valuable time。
At the hot retracement scene，Employees roll up their sleeves、Throw off your arms，“一二、One, two..." the chant resounded through the underground alleyway，The tinkling sounds of percussion interweave，After doing the same thingQuickGet into the next work of dismantling the equipment，Sweat stained face、Soaked clothes，The employees seem to have forgotten the time，Working hard at the retreat site。
Beating time is the greatest safety。With strict construction organization、Striving for excellence and striving for action，The company safely and quickly completed the equipment withdrawal task of 214202 fully mechanized mining face，A song of M88 loginlabor competition is composed deep in the earth。(Yang Heng Huo Junpeng)