2) soft thick seam
软厚煤层
1.
In order to solve the support difficulties of the mining gateway for the fully mechanized top coal caving mining face in soft thick seam of Zhenchengdi Mine,the numerical simulation was applied to the optimized study on the mining gateway support mode and the support parameters.
为解决镇城底矿软厚煤层综放开采工作面巷道支护难题,采用数值模拟对巷道支护方式与支护参数进行了优化研究,分析了工字钢、锚杆与锚索等不同支护形式对巷道围岩变形、应力分布及塑性区范围的影响,得出了采用锚网带与锚索支护软煤巷道的优化支护参数,并进行了现场试验,验证了所选择支护参数的可行性。
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) very soft coal seam
极软厚煤层
1.
Mechanism of the rib spalling and the controlling in the very soft coal seam;
极软厚煤层煤壁片帮与防治机理
6) loose soft coal seam
松散软煤层
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