Application of Roadway Spray Material to Fire Prevention in Goaf Excavation  

作　　者：Hao Rong Hao Rong(School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, China)

机构地区：[1]School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, China

出　　处：《World Journal of Engineering and Technology》2024年第2期389-400,共12页世界工程和技术（英文）

摘　　要：In order to reduce the risk of spontaneous combustion in goaf during goaf excavation process, polymer modified cement mortar spraying material was used to spray and seal the roadway surface. The experimental application was carried out in the upper channel 2304 of a mine in Henan Province. The test results showed that polymer modified cement mortar spraying material could effectively support the roadway and greatly reduce the deformation rate of the roadway. The best spraying thickness is 5 mm. Through the monitoring of tunnel air leakage, it is concluded that the polymer modified cement mortar spraying material can reduce the tunnel air leakage and play a better sealing effect.In order to reduce the risk of spontaneous combustion in goaf during goaf excavation process, polymer modified cement mortar spraying material was used to spray and seal the roadway surface. The experimental application was carried out in the upper channel 2304 of a mine in Henan Province. The test results showed that polymer modified cement mortar spraying material could effectively support the roadway and greatly reduce the deformation rate of the roadway. The best spraying thickness is 5 mm. Through the monitoring of tunnel air leakage, it is concluded that the polymer modified cement mortar spraying material can reduce the tunnel air leakage and play a better sealing effect.

关 键 词：Goaf Excavation Thin Layer Spraying Construction Technology Shotcrete Plugging Air Leakage Plugging 

分 类 号：TD3[矿业工程—矿井建设]