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- longwall spalling 片帮
- However, the alumina layers spall as the temperature increases. 但是，氧化铝层剥落的温度升高。
- These seals are primarily used for Longwall Roof Supports. 生产的密封主要用于长壁工作面液压支架上。
- The fracture of film probably happens more than that of spall. 薄膜断裂比层裂的可能性要大。
- The reasonable layout of tunnel below longwall face is described. 论述了受采动影响的底板岩巷的合理布置问题。
- Spall the glass and push the button,when in emergency. 遇到紧急情况时，击碎玻璃并摁下按钮。
- Spall the glasses and press the buttom in the emergency. 遇到紧急情况时，击碎玻璃并摁下按钮。
- The spall that blew out the back caused the water jug to leak. 头盔背后爆出的碎片把水桶打的漏水了。
- The new technique increases the efficiency of longwall panel mining. 这种新技术提高了长壁盘区采矿的效率。
- Large area of spalling accured on the work layer of high-Crcentrifugal cast iron roll after heat treatment. 高铬离心复合铸铁轧辊辊身工作层在热处理后发生大面积剥落。
- The failure forms of cold work roll including contact fatigue crack, spalling, inclusion crack and wear are discussed. 讨论了冷轧工作辊接触疲劳裂纹、剥落、夹杂物裂纹和磨损等失效形式。
- With the support system, Cuijiazai Mine was successfully in a longwall coal mining. 应用此方法,崔家寨煤矿成功实现了长壁连续开采。
- The surface spalling and fatigue failure may occur after a long time of service, during wheel-rail rolling contact. 摘要钢轨钢的接触疲劳一直为铁路运输部门和研究机构所重视。
- According to the conditions of seam No.5 in Shifengshan Coal Mine,longwall face roof coal drawing method is chosen. 通过对峙峰山煤矿5号煤采煤方法的设计,提出了采用综采放顶煤法回采5号煤。
- Metallographic examination and chemical composition analysis were done for analyzing the reason of spalling. 采用金相检验和化学分析等测试手段对轧辊剥落进行了分析。
- The paper regards the main roof strata in uphill and downhill mining of an inclined longwall as a elastic plate. 本文将倾斜长壁仰斜、俯斜开采的老顶岩层视为倾斜弹性板。当板的长短跨度之比＞2时，板的荷载主要由短跨边来承担。
- A scientific and comprehensive method was proposed for quantitative analysis of spalling degree from its mechanism. 提出从机理方面寻找科学与全面的方法定量评价爆裂程度；
- Its successful selection and application are the prerequisite for successful longwall mining . 正确、合理地选择液压支架架型是长壁工作面采煤成功的前提和关键。
- By comparison, thermo-fatigue wear with severe spalling arouse in the rubbing surface of composites in air condition. 而干摩擦下则发生了剧烈的热疲劳剥落磨损。
- ABSTRACT ：Modern longwall mining employs hydraulic powered supports at the face area. 摘要：液压支架广泛应用于现代长壁采煤工作面上。
