南水北调输水管线煤炭开采损伤状态数值模拟研究及监测方案设计

Numerical simulation and monitoring scheme design ofcoal mining damage state of water transmission pipeline ofSouth-to-North Water Transfer

针对兖州矿区南水北调输水管线存在压覆大量煤炭资源、输水管线管径大、受采动影响程度剧烈、开采损伤机理不明等问题,文中以鲍店煤矿5302工作面开采对其上方的南水北调管线影响为例,采用数值模拟分析未充分采动、充分采动和工作面稳沉三种工况下管线的移动变形特征,确定管线的典型变形部位,得到管线开采影响下的安全区与易损区域。以管线损伤监测为目的,选择声发射系统作为监测设备,以易损区域为监测重点,针对性的为开采影响下损伤状态的管线监测提供了设计,有效解决了大管径输水管线压煤开采问题。

In view of the problems existing in the South-to-North Water Transfer pipeline in Yanzhou mining area,such as covering a large number of coal resources,large diameter of water transfer pipeline,severe influence of mining,unclear mining damage mechanism and so on,in this paper,taking the mining of 5302 working face in Baodian Coal Mine as an example,and the typical deformation parts of the pipeline were determined and the safe area and vulnerable area under the influence of pipeline mining are obtained by using the numerical simulation to analyze the movement and deformation characteristics of pipeline under three working conditions of insufficient mining,full mining and stable sinking of working face.For the purpose of the damage monitoring of the pipeline,the acoustic emission system was selected as the monitoring equipment,and the vulnerable area was the focus of the monitoring,the targeted design was provided for the pipeline monitoring under the influence of mining,which effectively solved the problem of coal mining with large diameter water pipeline.