The mining-induced ground response (MIGR) has a critical impact on safety management, the mining plan, and entry support. A clear understanding of characteristics is foundation MIGRs scientific control. This study result development non-pillar panel with gob-side by roof cutting (GSERC). Comprehensive research in situ measurements, numerical simulation, theoretical analysis to determine charact...

in advance longwall mining, the safety of mine network, production rate, and consequently, economic conditions of a mine are dependent on the stability conditions of gate roadways. the gate roadway stability is a function of two important factors: 1) characteristics of the excavation damaged zone (edz) above the gate roadway and 2) loading effect due to the caving zone (cz) above the longwall w...

Noise in an underground coal mine has dominant components generated mainly from 3 sources: (a) continuous mining machines, (b) roof bolters, and (c) cars/vehicles used to transport personnel and/or coal. Each of these 3 noise sources also has a number of well-defined sub-sources with their own noise characteristics. Sound level meters were used to collect noise data in the form of instantaneous...

Land surface deformation can be caused by underground mining activities. The maximum subsidence normally occurs directly above the location of the excavation of the coal seam. In the case where the longwall mining technique is applied, the magnitude and shape of the subsidence bowl are constrained by the longwall structure (pillar). This paper describes the use of satellite radar interferometry...

The condition of the coal pillars remained in room-and-pillar gobs is complicated. stresses loaded on pillar floor may be transmitted and overlapped. It changes stress environment lower seam roof, leading abnormal periodic weighting. In procedure 3?1 mining Huoluowan Coal Mine, ground high while working face passing through room overlying 2?2, to hydraulic shield being broken. this paper, theor...

Original scientific paper With the increase in mining depths and the occurrence of worsening conditions, deep, large-scale and rapid mining may lead to more complicated dynamic features for tunnels, making them vulnerable to dynamic disasters such as rock bursts and coal/gas outbursts with subsequent heavy damage and casualties. A three-dimensional structural mechanics model for deep stopes was...