小庄矿主立井非全深冻结法施工解冻后井筒涌水机理及防治技术

发布时间：2018-02-28 17:28

本文关键词： 非全深冻结法富水洛河砂岩立井渗流与应力耦合三维有限元模拟井筒涌水机理防治方案　出处：《西安科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：开展非全深冻结法立井施工井筒解冻后涌水规律与防治技术研究具有重要的工程应用价值，本文以小庄煤矿主立非全深冻结法凿井工程为依托，采用室内试验、理论分析和现场实践相结合的手段开展研究工作，主要结论有：（1）完成了洛河砂岩在常温、冻结、融化三种状态下的物理力学试验。为确定非全深冻结法施工决策的理论基础，分析解冻后立井井筒涌水机理提供了物理力学参数。（2）运用渗流与应力耦合弹塑性三维有限元分析模拟了普通法和非全深冻结法凿井穿越富水洛河砂岩地层的施工过程，研究了冻结壁的应力和变形分布规律，分析了普通法施工的可行性和非全深冻结法施工冻结壁的稳定性。（3）基于对小庄煤矿主井周围地层水文地质赋存条件的分析，以及三维有限元对普通法凿井可行性和非全深冻结法凿井冻结壁稳定性的研究结果，得到了处于富水洛河砂岩地层的小庄煤矿主井采用非全深冻结法凿井方案决策的理论基础。将得到的非全深冻结法凿井方案决策的理论基础用于小庄煤矿主井施工方案决策中。（4）研究了非全深冻结法施工解冻后的三个主要涌水通道，采用三维有限元模拟方法计算了主井井筒主要渗漏水区间和涌水量。基于“高低压并用，深浅孔结合，单液为主双液为辅”的原则，设计了小庄矿主立井解冻后涌水防治方案。工程实践表明，井筒涌水防治方案合理有效。
[Abstract]:The research work is carried out by means of laboratory test , theoretical analysis and field practice . The main conclusions are as follows : ( 1 ) The physical and mechanical tests of the Luohe sandstone under normal temperature , freezing and thawing are completed . In order to determine the theoretical basis of the construction decision of the non - full - depth freezing method , the physical and mechanical parameters are provided for the analysis of the water kick mechanism of the well bore after thawing . ( 2 ) By using the elastic - plastic three - dimensional finite element analysis of seepage and stress coupling , the construction process of common law and non - deep freezing method is simulated and the stress and deformation distribution law of frozen wall is studied , and the feasibility of common law construction and the stability of frozen wall of non - deep freezing method are analyzed . ( 3 ) Based on the analysis of the geological occurrence condition of the formation around the main shaft of Xiaozhuang coal mine , and the results of three - dimensional finite element method to study the feasibility and the stability of the freezing wall of the non - full - deep freezing method , the theoretical basis for the decision - making of the deep freezing method is obtained . The theoretical basis for the decision - making of the non - full - depth freezing method is used in the decision - making of the construction scheme of Xiaozhuang coal mine main shaft . ( 4 ) Three main water inflow channels after thawing in the non - full - depth freezing method are studied , and the main seepage water interval and the water inflow in the main shaft are calculated by using the three - dimensional finite element simulation method . Based on the principle of " high and low pressure and combined with deep and shallow holes and single liquid as the auxiliary " , a scheme for preventing and controlling the water kick after thawing of the main shaft of Xiaozhuang Mine is designed . The engineering practice shows that the scheme for preventing and controlling the water kick in the well bore is reasonable and effective .

【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD265.3;TD745

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