采动影响陷落柱活化导水规律试验研究  

Experimental study of mining effect on collapse column activated water conducting mechanism

作　　者：李振华[1] 谢晖[1] 李见波[2] 贺志宏[3] 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454010 [2]华北科技学院安全工程学院,河北三河065201 [3]山西焦煤集团有限责任公司,山西太原030053

出　　处：《中南大学学报（自然科学版）》2014年第12期4377-4383,共7页Journal of Central South University:Science and Technology

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB209402);国家自然科学基金资助项目(51104058;51374093);教育部高等学校博士学科点专项科研基金资助项目(20114116120005)~~

摘　　要：为研究采动对陷落柱的活化作用,以双柳煤矿工作面穿X15陷落柱为研究对象,采用自行研发的相似模拟试验系统,对上、下组煤开采过程中影响下陷落柱活化导水过程进行相似模拟试验,观测陷落柱周围渗流场及视电阻率的变化规律。研究结果表明:充水陷落柱周边发育有塑性破坏区和渗透区域,塑性破坏区发育较不规则,渗透区域由下向上逐渐变大,在垂向平面,柱体顶部呈圆弧形状;随着开采工作面与陷落柱接近,采动破坏区逐渐与陷落柱渗透区域联系,陷落柱周边围岩物性发生相应变化,视电阻率变小;当陷落柱周边塑性区与工作面前方塑性区相互贯通时,形成导水通道,工作面发生突水;陷落柱柱体周边的渗透区域随着时间和水压增大而不断扩展,水流的不断冲刷导致下柱体的塑性破坏区不断扩大,塑性破坏区发育程度与水压呈正相关关系。To study the effect of mining on the activation of collapse column, the X15 collapse column from working face in Shuangliu Mine was taken as the research object. The physical simulation experiment about mining effect on collapse column activated water conducting was carried out by the self-designed similar simulation experiment system, and the change laws of seepage field around collapse column and apparent resistivity were observed. The results show that there are plastic failure zone and seepage zone around the water filling collapse column.The plastic failure zone develops less rules, the seepage zone is gradually bigger from up to down, and the top of collapse column manifest shows circular shape. When the working faces are close to collapse column, the mining failure zone begins to connect with the seepage zone, so the physical properties of wall rock change correspondingly and apparent resistivity becomes less. When the collapse column surrounding plastic zone and working face plastic zone are interconnected to form water conducting channels, the water inrush occurs. The seepage zone around collapse column changes with time and water pressure, the plastic failure zone becomes bigger by current scour, and there is a positive correlation between them.

关 键 词：采动影响 陷落柱 活化导水 渗透区域 塑性区 相似模拟 

分 类 号：TD353[矿业工程—矿井建设]