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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。
In view of the problem of over-splitting construction in fully mechanized top coal caving mining of ultra-thick coal seam, the dynamic appearance of the fully mechanized top coal caving mining face and fully mechanized top coal caving face is monitored by using electromagnetic radiation technology. The electromagnetic radiation intensity and pulse number characteristics of the ultra-thick coal seam are obtained. According to the characteristics of cleavage structure and hollow, strengthening temporary support and permanent support, supplemented by filling, grouting, effectively control the deformation and support stability of surrounding rock.