摘要
采用钻探探查、In SAR技术分析、剩余变形理论计算和荷载影响深度计算等方法,对煤矿采空区场地的覆岩特征、地表剩余变形对工程建设影响程度和工程荷载引起采空区活化程度进行了计算和分析.结果表明,该采空区导水裂隙带发育高度平均值为42.8 m,局部仍存在未完全塌陷的采空空洞;研究区地表变形已进入衰退期,当未进行大规模工程建设时,地表会一直保持稳定状态;当研究区堆载高度超过255 m后将引起采空区局部活化,随着堆载高度的进一步增加,采空区活化面积将进一步加大,当堆载高度至280 m时,将引起场地采空区的大面积活化.为保障工程建设和生产运营的安全,一般将对采空区采取灌浆充填等措施进行工程治理,经检测合格后方可进行工程建设.
By means of drilling exploration,In SAR technology analysis,residual deformation theory calculation and load influence depth calculation,the overlying strata characteristics of goaf site,the influence degree of surface residual deformation on engineering construction and the activation degree of goaf caused by engineering load are calculated and analyzed.The results show that the average development height of the water conducting fracture zone in the study area is 42.8 m,and there are still partially collapsed cavities in the study area;the surface deformation of the study area has entered a recession period,and the surface will remain stable without large-scale engineering construction;the local activation of the goaf will be caused when the stacking height of the study area exceeds 255 m,with further increase of the stacking height.The activation area of the goaf will be further expanded,and the increase in the heaped load up to 280 m will cause a large area activation of the goaf.In order to ensure the safety of engineering construction and operation,grouting and filling measures shall be taken in the research area for engineering treatment,and the engineering construction can only be carried out after its passing the inspection.
作者
阮壮
RUAN Zhuang(Wuhan Design&Research Institute Co.,Ltd.of China Coal Technology&Engineering Group,Wuhan 430064,China)
出处
《成都大学学报（自然科学版）》
2021年第1期107-112,共6页
Journal of Chengdu University（Natural Science Edition）
关键词
采空区
导水裂隙带
地表沉陷
荷载
活化
适宜性
goaf
water conducting fracture zone
surface subsidence
load
activation
suitability
