沿空留巷主动控顶区补强加固措施

留巷顶板稳定性的控制直接关系到留巷是否能够成功,沿留巷走向将巷道划分主要控顶区,分区域主动强化控制巷道顶板,针对各个区的动压影响特点采取针对性补强加固措施,随后在留巷补强加固后进行了两帮及顶底板变形量及变形速度的观测记录,结果表明该措施达到了上覆岩层形成留巷围岩大结构保护下层留巷围岩小结构效果。在工作面采动压力下留巷也基本维持了稳定性。

Reinforcing Measures of Activing Control Roof Area for Gob-side Entryretaining

Stay roof stability control is directly related to the gob-side entry retaining is able to successfully.gob-side entry retaining to be divided along the main roadway roof control area.Subregional initiatives to strengthen the control of roadway roof,Reinforcement take appropriate measures against the effects of dynamic pressure characteristics of each area,Then after gob-side entry retaining reinforcement were observed and recorded two top-floor deformation of help and deformation rate.The results show that the measure reached the gob-side entry retaining of the overburden rock formation of large structures to protect the lower left Roadway effect of small structures.In the face of mining pressure gob-side entry retaining is also essential to maintain a stable.