Recently，The 10203 fully mechanized mining working face of Sunjiacha Longhua M88 loginMining Company was successfully connected，And pass through the empty alley safely。

There is a 30-meter long return air lane at 1,310 meters in the 10203 working face、Width 5.4 meters、3 meter high lane，Affected by relevant geological factors，The working face is mining to this section and the advance pressure is relatively large，There are certain security risks，Directly affects the safety production of the working surface。

In order to solve this problem，The coal mine business department has conducted multiple investigations，Adopt the "Pumping Pillar Support Solution" to solve the problem of working face passing through empty tunnels。The production department and relevant manufacturers have repeated technical demonstrations、Theoretical analysis，Design 29 pumping pillars to support the empty tunnel，Has a stable position、Can hold on、Performance such as cutting ability，The entire set of technology M88 appapplications is easy to operate、Quick、The application is highly targeted。

This time the working face was safely pushed through the empty alley，Remarkable results，Represents the deformation of the soft rock tunnel in the later stage、Provided valuable experience in roof control in special areas such as large-section tunnels and working face tunnels，It also laid the foundation for the next application of mining technology along the gob of the working face。(Author: Feng Kai  Editor: Wang Yu)