Monitoring technology of cemented filling mass in continuous mining-filling of coal mine
In order to monitor the state of cemented filling mass in continuous mining-filling of coal mine,based on the characteristics of continuous mining-filling technology and the features of filling mass,five basic contents of filling mass state monitoring were proposed,including liquid level monitoring,load monitoring,strength monitoring,temperature monitoring and stress monitoring.The monitoring technology and monitoring scheme of each monitoring content were studied.Liquid level monitoring technologies were analyzed,such as reserved borehole for filling bodies,laser,radar,and buoy type,and it was concluded that buoy type liquid level monitoring has good adaptability.Load monitoring was carried out using a retaining wall manometer with a range of approximately 150kPa.A filling monitoring technology for laboratory testing was proposed and in-situ strength testing technology was prospected.The temperature was monitored with temperature sensors,and the stress was monitored with dual channel stress gauges of kPa and MPa levels.
continuous mining and chargingcemented fillingfilling bodyliquid level monitoringstrength monitoringstress monitoring
NETL
NSTL
万方数据
