摘要
通过对老采空区沉陷量进行分析,认为其由注浆柱和采空区破裂岩体压入底板量Wc1、注浆柱和采空区破裂岩体的压缩量Wc2、上部覆岩离层闭合量Wc3、承重岩层的挠度增加量Wc4四部分组成,并对其力学机理进行了分析;同时针对老采空区的处理方法中广泛采用的注浆充填法,根据有效区域理论推导出注浆钻孔间距的理论公式,这对于指导生产建设具有重要的经济效益.
The paper analyzes subsidence quantity of the abandoned mine goaf,which comprises four parts:embedded soleplate quantity between grouting pillar and fracture rock of goaf W_(c1),compression quantity between grouting pillar and fracture rock of goaf W_(c2), close quantity of the upper terrane bed_seperation W_(c3) and increment of bearing terrane camber W_(c4), and deals with its mechanics mechanism; At the same time, grouting_and_bashing is widely adopted to process abandoned mine goafs, and according to valid district theories, formula of space between grouting drills is deduced.
出处
《河南理工大学学报（自然科学版）》
CAS
2005年第1期13-17,共5页
Journal of Henan Polytechnic University（Natural Science）
基金
国家自然科学基金项目(50004008)
