Numerical Analysis on Tunnel Support Nearly Mined Area and Stability Evaluation

Wei Jian Yu

doi:10.4028/www.scientific.net/AMR.255-260.3749

Paper Titles

Prediction Technology of Coal and Gas Outburst in Xuandong Coal Mine
p.3731

Characters Evaluation of Ground Pressure in Fully Mechanized Top Coal Caving Face in Soft Coal Seams
p.3735

Instability Identification of Goaf Risky in Mines Based on Distance Discriminant Analysis Method
p.3740

The Coal Mining Mode of Paste-Like Fill and its Application Prospects
p.3744

Numerical Analysis on Tunnel Support Nearly Mined Area and Stability Evaluation
p.3749

Analysis of Ground Fissures Induced by Underground Mining in a Metal Mine
p.3754

Water Bursting Mechanism of Coal Floor with Pattern Dynamics
p.3759

Experimental Investigation of Simulating Similar Materials of Multi-Seam Mining in Steep
p.3765

Hysteresis Analysis of RC Columns Based on Fiber Cross-Section Model
p.3770

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 255-260Numerical Analysis on Tunnel Support Nearly Mined...

Numerical Analysis on Tunnel Support Nearly Mined Area and Stability Evaluation

Abstract:

Since deformations of tunnel nearly mined area are larger, the reasonable support is very important. According to a side working face tunnel nearly mined area in one Mine, FLAC 2D was applied to numerical analyze on two type bolt net supported tunnel of “short bolt and long anchor cable” and “full anchor cable”. The results showed as follows: (1) plastic region of surrounding rock relatively large, which supported by short bolt and long anchor cable. Displacement reaches 27cm, the effect of this type supporting not significant; (2) The supporting of full anchor cable can effectively control deformation of tunnel, displacement less than 5cm, plastic region of surrounding rock also less than 2.3m. So, the supporting of full anchor cable can meet operating requirements.