回采工作面切顶卸压无煤柱留巷技术研究

Study on the Technology of Cutting Top of Mining Face without Coal Pillar Retaining Roadway

为缓解采掘接替紧张局面,山西某矿在1506综采工作面回风巷进行切顶留巷试验应用。现场应用后,留巷巷道顶板最大下沉量为350 mm,围岩变形量不会给巷道后续使用带来不利影响,同时可以为矿井创造约100万元的经济效益。

In order to relieve the tension of mining and replacement, the test application of cutting roof retaining roadway in 1506 fully mechanized mining face in Shanxi Province is carried out. After field application, the maximum subsidence of roadway roof is 350 mm, the deformation of surrounding rock will not bring adverse effect to the subsequent use of roadway, at the same time, it can create about one million yuan benefit for mine, and the effect is remarkable.