小屯煤矿3406工作面拐弯巷道和小三角煤柱强固技术的应用

Strengthened Technology of 3406 Turning Roadway and Small Triangular Pillar in Xiaotun Coal Mine

小屯煤矿在回采过程中3406工作面运输巷弯曲段巷道和煤柱区,因超前周期来压造成巷道强烈破坏,采用稳压注浆固结软弱煤体,提升软弱煤体自身强度支护技术,解决了小屯煤矿3406拐弯巷道和小三角煤柱支护稳定问题。

In the process of coal winning, the bending section roadway and coal pillar area of 3406 inner conveyance roadway in Xiaotun Coal Mine are seriously damaged by advanced periodic weighting. Stabilized pressure grouting is used to consolidate weak coal body, and the self-strength supporting technology of weak coal body is continuously improved to solve the support stability problem of 3406 turning roadway and small triangular coal pillar in Xiaotun Coal Mine.