摘要
随着煤矿开采深度的增加,巷道围岩岩性变差,而煤炭需求量的不断加大,引起巷道掘进面加大。在爆破掘进中,爆破的动载对围岩松动半径的影响越来越大。本文通过实际测量对围岩松动半径进行控制性研究,得出影响范围值,以及通过加强支护措施和改进起爆装置和设施来降低围岩松动影响。
With the increasing depth of coal mining, road- way surrounding rock is getting worse meanwhile, as coal de-mand continues to increase, the roadway＇s drivage face is in- crease. In blastingexcavation, blasting effects of dynamic load on the surrounding rock loosening radius increasing. The control of the actual measurement of surrounding rock loosening radius, the range of values, and by strengthening the supporting meas-ures and improve theignition device and facilities to reduce the influence of surrounding rock loose.
出处
《四川建材》
2013年第6期140-140,143,共2页
Sichuan Building Materials
关键词
爆破
松动半径
数据分析
Blasting
Loosening Radius
Data Analysis
