摘要
针对白岩桥硫铁矿采空区导致地表开裂或坍塌对当地居民和建筑物形成安全隐患的问题,通过对采空区塌陷的类型及特征的分析,研究了采空区形成的原因和机理,系统分析了采空区顶板垮落及地表塌陷变形特征,对地表最大移动与变形值预测和采空区可能的塌陷范围进行了预测计算。通过定性与定量分析,评价了该处采空区的稳定性,研究得出该处采空区塌陷形成的主要原因是由于斜坡内大量的坑道采矿活动未采取支护和回填措施,提出了对于埋深很小的采空区可采用从地表开挖分层回填夯实,对于采空区埋深较大采用充填注浆法进行治理的防治方法。
Aiming at the security risks for local residents and building caused by collapse problems on ground for goal of Baiyanqiao Py- rite, through analysing the types and characteristics of goaf collapse, the causes and mechanism of goaf formation were studied, deforma- tion characteristics of roof caving of gob and surface subsidence were also systematically analysed ,the prediction of the maximum ground movement, and the probable range of collapse were calculated and analyzed. The stability of the goaf was evaluated through qualitative and quantitative analysis, and it was summarized that, the main forming reason of collapse of gob is due to large number of underground mining activities without carrying out supporting and backfill countermeasures, the authors also put forward relevant control method of stratified excavation backfill from ground for the gob with shallow buried depth, and the method of filling grouting for the gob with large buried depth.
出处
《能源与环保》
2017年第1期178-181,共4页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
塌陷区
采空区
地表塌陷
地表移动盆地
稳定性分析
subsidence area
gob
collapse mechanism
movable basin on ground
stability analysis
