【摘要】 通过结合淮北矿业集团有限公司朱仙庄矿 84 13- 2工作面的综放开采实践 ,利用深基点跟踪观测法 ,探讨了“三软”中厚煤层在予采顶分层情形下综放开采时顶煤变形运移特性 ,对类似地质条件的“三软”工作面采用综放开采技术时确定合理的工作面生产工艺参数提供了依据更多还原

【Abstract】 Since 1982, China began to introduce a fully mechanized coal mining technology from other countries. After a passed dozen years of application and development, the fully mechanized mining method has become a main access to a safe, high production and high efficient method in China coal mines with thick seam. As a new mining method for a longwall mining in thick seam, many new questions, such as a production system, strata control, safety technology and others have set to the previous coal mining method. Does a three soft thick seam can be suitably mined with a fully mechanized coal caving mining method? How is the top coal movement and displacement when a fully mechanized caving technology applied? After a fully mechanized caving practice in No. 8413 2 coal mining face in Zhuxianzhuang Mine, a top coal movement and displacement law was obtained. With deep base point tracing measurements, a working resistance of each hydraulic powered support in the coal mining face was analyzed and studied. A relationship between the top displacement curves and advancing rate in different location was obtained.更多还原