欢迎访问《金属矿山》杂志官方网站,今天是 分享到:
×

扫码分享

金属矿山 ›› 2012, Vol. 41 ›› Issue (04): 141-143.

• 安全与环保 • 上一篇    下一篇

井筒变形预测与保护措施研究

李英伟1,2,周华强1,2,常庆粮1,2,陈见行1,2   

  1. 1.煤炭资源与安全开采国家重点实验室;2.中国矿业大学矿业工程学院
  • 出版日期:2012-04-23 发布日期:2012-04-26

Study on Shaft Deformation Forecast and the Protective Measures

Li Yingwei1,2,Zhou Huaqiang1,2,Chang Qingliang1,2,Chen Jianhang1,2   

  1. 1.State Key Laboratory of Coal Resources and Safe Mining;2.School o f Mines, China University of Mining & Techno logy
  • Online:2012-04-23 Published:2012-04-26

摘要: 针对鹤壁二矿井筒与工业广场保护煤柱的开采,确定了采用膏体充填分层下行式开采的方法,并计算出了允许的地表最大下沉系数为0.15。在此开采方法下,进行了井筒变形的预测,得出随着工作面向井筒推进,井筒下沉和拉伸变形也相应变大,当工作面推过井筒50 m时,井筒变形达到稳定;并根据预测结果进行了保护措施的选择。

关键词: 膏体充填, 井筒变形, 变形预测, 井筒保护

Abstract: In this paper, aiming at the mining of the portal and industrial area pillars, the author decided to adopt the paste backfilling with slicing descending mining method and figured out that the allowable subsiding ratio is 0.15. Based on this mining method, the portal deformation prediction was conducted. As a consequence, the conclusion was that the portal would subside and the stretching deformation could become greater with the working face advancing towards the portal. What's more, the portal deformation would become stable when the working face was approximately 50m in the front of the portal. Addition to that, protecting measures were chosen on the basis of the predicting results.

Key words: Paste backfill mining, Portal deformation, Deforming prediction, Portal protecting