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- Keywords roof brokenness;coal wall caving;replacing columns; 顶板破碎;煤壁片帮;更换立柱;
- Reason Analysis and Processing of Roof Brokenness and Coal Wall Caving in the Fully Mechanized Face 采煤工作面顶板破碎、煤壁片帮原因分析与处理
- coal wall caving 煤壁片帮
- The formation is unstable and the wall caving are severe. 地层不稳定,井壁垮塌严重。
- The wall caved in without the slightest warning. 事先大家毫无察觉的情况下墙塌了。
- In extensional flow fiber tended to perpendicularity to the streamline, while in shear flow and convergent flow fiber tended to parallel to the streamline in the thin wall caving. 在薄壁型腔的扩张流中，短纤维趋于与流线方向垂直，而在剪切流和收敛流中趋于与流线方向一致。
- The paper carefully analyzes bolt supporting system, and measures the parameters of coal wall rock in Fuxin diggings. 本文对锚杆支护理论进行了系统分析，并对阜新矿区煤巷围岩的参数进行了实验测定。
- CIR testing system is established,and the model shearer and model coal wall are designed and manufactured.The control system is manufactured. 建立了采煤机煤岩界面识别物理模拟系统,包括介质模拟和采煤机牵引-截割机构的模拟,研制了试验控制系统。
- Methane buoying up close to coal wall is obtained in experiment in the paper.The boundary layer equation of buoyant movement of methane is set up by means of theorectie analysis. 在实验中观测了瓦斯自然上浮运动现象，通过理论分析，得出煤壁瓦斯自然上浮的边界层方程。
- The walls caved in during the earthquake. 墙壁在地震中坍塌了
- Methane buoying up close to coal wall is obtained in experiment in the paper.The boundary layer equation of buoyant movement of methane is set up by means of theorectic analysis. 在实验中观测了瓦斯自然上浮运动现象,通过理论分析,得出煤壁瓦斯自然上浮的边界层方程。
- Abstract： Methane buoying up close to coal wall is obtained in experiment in the paper.The boundary layer equation of buoyant movement of methane is set up by means of theorectie analysis. 摘 要： 在实验中观测了瓦斯自然上浮运动现象，通过理论分析，得出煤壁瓦斯自然上浮的边界层方程。
- long wall caving method along the strike and incline slicing 走向长壁倾斜分层
- Mechanism and Preventing Technique on Side Fall Root Caving of Coal Wall in Sub- Level Caving Mining workface 综放工作面煤壁片帮冒顶机理及防治技术
- type of coal wall being pushing out overall 整体推出型
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- In addition, the stomata apparatus are ruleless and only distribute on the lower epidermis.On the upper epidermis, anticlinal wall caves in sinuose groove to countercheck the transpiration. 为进一步研究这2种忍冬属植物叶的形态解剖特征，通过光学显微镜观察发现，叶均为异面叶，栅栏组织发达，细胞长柱形；
- She piled on more coal before the fire go out. 在火熄灭之前她又加上些煤。
- I add the coal on the flame continuously. 我不断朝火里添加煤炭。
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
