2) Loose floor
松软底板
4) soft coal and stable roof
松软煤层稳定顶板
1.
Characteristics of strata behaviors of fully mechanized caving face in soft coal and stable roof conditions;
松软煤层稳定顶板综放工作面的矿压显现特点
5) soft bottom and broken roof
软底碎顶
6) roof and floor
顶底板
1.
Water inflow forecast from roof and floor in the deep area of No.1 panel;
深部首采工作面顶底板涌水量预计
2.
Based on analysis of characteristics of the roof and floor of each minable seam,this paper demonstrated some common issues occurring in underground working activities,providing reliable data for helping shaft geologists with their engineering design and construction and then contributing to mining activities in a better way.
通过对童亭井田各可采煤层顶底板特性分析,对不同顶底板岩性及采掘中遇见的问题进行了说明,为矿井地质工作人员设计、施工提供了可靠的地质依据,以更好地为矿井生产服务。
3.
On the basis of digital acoustic logging and density logging data, the stability of theroof and floor of the main workable coal seams in Hanzhuang wellfield of Qinshui coalfield,Shanxi.
根据数字声波测井和密度测井资料，讨论了山西沁水煤田韩庄井田主要可采煤层顶底板的稳定性。
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