1) mollic epipedon
松软表层
3) soft coal seam
松软煤层
1.
Study on fastly extincting burst technique when tunneling in soft coal seam
松软煤层巷道掘进快速消突技术应用研究
2.
Improving the penetrability of soft coal seam with self-excited oscillation water jet
自激振荡射流改善松软煤层渗透率的机理
3.
Based on analysis about status of coal seam infusion technology and soft coal seam preventing rib spalling technology and used coal’s failure mechanism、strength theory and coal’s wetting mechanism, the mechanism of shallow holes infusion at coal wall preventing rib spalling in soft coal seam was analyzed.
本文在分析国内外煤层注水技术和松软煤层防片帮技术的研究现状的基础上,运用岩石的破坏机理、强度理论和煤的润湿机理等理论知识,分析研究了松软煤层煤壁浅孔注水防片帮技术的机理,通过实验得出对松散煤体不同含水率条件下的力学性质的变化规律,并进行了现场工业性试验,验证了煤壁浅孔注水防止松软煤层煤壁片帮较好的技术效果。
4) soft stratum
松软地层
1.
This article gives the calculation formula on smallest support thickness of soft stratum and large cross-section shaft and tunnel combined with the calculation method of road tunnel ground pressure,and calculates the force of support structure by FLAC3D,at last checks the stability of arch walling.
结合公路隧道地压计算方法提出了煤矿松软地层大断面井巷最小支护厚度计算公式,并通过FLAC3D对支护结构进行了受力数值模拟计算,最后对碹体稳定性进行了验算。
5) spongy topsoil
松软的表土
补充资料：松软
1.松散绵软。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条