特厚煤层综放开采过大劈裂构造动力显现预评价及施工

Dynamic Appeared Pre- evaluation and Construction of Crossing Large Splitting Structure in Extremely Thick Seam With Fully Mechanized Caving Mining

针对特厚煤层综放开采过大劈裂构造工程问题,利用电磁辐射技术对综掘面和综放面动力显现进行了监测,得到特厚煤层电磁辐射强度和脉冲数特征,预测无动力倾向。针对劈裂构造空洞特点,采取强化临时支护和永久支护,辅以充填、注浆,有效控制了围岩变形和支护稳定性。

According to large splitting structural engineering problem in extremely thick seam with fully mechanized caving mining, e- lectromagnetic radiation technology is applied to monitor dynamic appeared in mechanized excavation face and mechanized caving face, electromagnetic radiation intensity and feature of pulse number are obtained, which predicts non - dynamic tendency. For cavity char- acteristic of splitting structure, temporary support and permanent support are strengthened, assisted with filling, grouting, surrounding rock deformation and supporting stability are effectively controlled.