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1)  declination mechanism
冒落机理
1.
Discussion on the declination mechanism and the control technology of stope roof;
采场顶板冒落机理及控顶技术探讨
2)  tunnelling through collapse area
冒落区处理
3)  roof falling mechanism
冒顶机理
4)  fall [英][fɔ:l]  [美][fɔl]
冒落
1.
The hing girder assorting with π type steel used in broken caving roof in Nanshan Coal Mine,Hegang Mining Bureau can not only solve the roof fall accident but also meet the needs of section mining support.
鹤岗矿务局南山煤矿在破碎易冒落顶板中 ,铰接顶梁与π型钢梁配套使用 ,不仅解决了顶板易发生的抽漏冒顶事故 ,而且满足了分层开采各分层顶板支护的要
2.
Through observing and analyzing to roof and wall of spot in 6114 workface,this paper sum up rules and features of rib spalling and roof fall under complicated geology condition in sub-level caving mining workface,it raises a series of roof control measures and gets good result.
通过对 6 114工作面顶板、煤壁现状的现场观测和理论分析 ,总结出了复杂地质条件下综放工作面煤壁片帮、端面顶板冒落的规律和特点 ,提出了一系列复杂地质条件下综放工作面顶板控制措施 ,现场应用后取得了较好的效
5)  Roof fall
冒落
1.
The roof falling types of worked out area in south mining district are pointed out, which are scattered falling and batch falling.
指出南区采空区顶板冒落形式 ,一是以散体形式零星冒落 ,另一是批量冒落。
6)  roof falling
冒落
1.
To predict roof falling,AE field tests have been conducted and AE monitor holes are laid out based on the block analysis.
为了预报冒落事故,开展了声发射(AE)现场试验,并在块体分析的基础上布置了AE监测孔。
2.
To predict roof falling) AE field tests have been conducted and AE monitor holes are laid out based on the block analysis.
为了预报冒落事故,开展了声发射(AE)现场试验,并在块体分析的基础上布置了AE监测孔。
补充资料:A机理
分子式:
CAS号:

性质:缔合机理  association mechanism  简称A机理(A mechanism)。在配位化合物MLnX被Y取代反应中,Y接近MInX,先于X的离去。反应速率决定步骤有中间体生成,具有比原来配位化合物高的配位数。新键的生成是反应速率的决定步骤。例如,反应[Pt(NH3)3Cl]++Br-[Pt(NH3)3Br]++Cl-其反应速率可表示为V=kc[Pt(NH3)3Cl+)c(Br-)。反应速率与配位化合物浓度c(Pt(NH3)2Cl+)及外来配体浓度c[Br-]均有关。其特点是双分子的二级反应。

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