采矿与安全工程学报2011，Vol.28Issue(3)：333-339,7.
松散承压含水层下采煤突水机理与防治研究
Study on Water-Inrush Mechanism and Prevention During Coal Mining Under Unconsolidated Confined Aquifer
摘要
Abstract
According to the several water inrush disasters in Qidong coal mine, we adopt field measurements and simulation experiments in this paper, to study the development characteristics of water flowing fracture, water inrush mechanism, prediction of water inrush zone, and prevention strategy, et al, while mining under the unconsolidated confined aquifer. The results show that the support crushing accident appeared before each water inrush in Qidong coal mine, which proves that it exist close relationship between water inrush accident and overburden moment. Due to the effect of load transfer of the unconsolidated confined aquifer, the adjacent key strata are prone to compound breakage, which can cause the bedrock broken as a whole in a wide range below the unconsolidated confined aquifer. Therefore, the height of water flowing fractured zone becomes obviously larger and then communicates the unconsolidated confined aquifer. This is the fundamental reason for the abnormal water inrush disaster when mining under the unconsolidated confined aquifer. Finally, prediction method to determine water inrush zone and the prevention strategy were put forward here, which guided the water inrush prevention effectively when mining under the unconsolidated confined aquifer in Qidong coal mine.关键词
松散承压含水层/突水灾害/导水裂隙/关键层/绿色开采Key words
unconsolidated confined aquifer/ water inrush/ water flowing fracture/ key stratum/ green mining分类
矿业与冶金引用本文复制引用
许家林,朱卫兵,王晓振..松散承压含水层下采煤突水机理与防治研究[J].采矿与安全工程学报,2011,28(3):333-339,7.基金项目
国家重点基础研究发展计划(973)项目(2007CB209403) （973）
国家自然科学基金项目(50974116) （50974116）
江苏高校优势学科建设工程项目 （）
