矿井水灾之渗水通道存在的实测分析  

Measurement analysis of existing water channel conducing mine flood

作　　者：曹菲菲[1] 经来旺[1] 

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《中国矿业》2009年第5期81-84,87,共5页China Mining Magazine

基　　金：十一五国家科技支撑计划(编号:2007BAK24B00)

摘　　要：文章的目的在于揭示矿山立井井壁周侧渗水通道的存在,从而为正确的认识立井井壁的破裂机理奠定基础。文章分析了井筒周侧土体压缩变形的机理和表土与井筒之间的相对位移关系,研究了井筒下部向上附加力产生的过程和中性层位置的变动规律,并最终揭示了竖向附加力的分布和变动规律。文中利用物理学中的浮力原理,不仅完善地解释了竖向附加力产生的过程,而且圆满地解释了该领域的一些特殊现象,如底含缺失的井筒不一定不发生破裂,下含水位下降也不一定会导致破裂的发生。文章对我国几个典型破裂井筒的现场实测数据进行了较为细致的力学分析,并以此有效地论证了文中的理论观点。本文的研究结果,对正确认识立井井壁的破裂机理及立井井壁破裂预测理论的建立,具有重要的理论意义。The purposes of this paper are to find out existing water channel conducing mine flood around shaft, thus to make base for the correct understanding of the mechanism of shaft fracture. In this paper, the mechanism of the compression deformation of the soil around shaft and the relation of the relative displacement between soil and outside shaft-wall are analyzed. The procreant process of the upward additional force acting on outside shaft-wall and the variable law of the ＂Neutral level＂ are researched. Utilizing the buoyant principium in physics, this paper triumphantly explains the procreant process of additional force and a series of especial phenomenon in this field, for example that lacking of bottom water-bearing layer is not the reason of no rupture of shaft-wall and the water layer drop of bottom water-bearing layer not always makes shaft-wall rupture. The observed data of some typical examples are analyzed and provided to verify the theory in present paper. The research result in this paper will play an important role in the research of the rupture mechanism and rupture forecast of shaft-wall.

关 键 词：立井井壁 竖向附加力 变形 破裂 机理 

分 类 号：TD265[矿业工程—矿井建设]