MONITORING AND ANALYSIS OF DEFORMATION OF DEEP ROCK EXCAVATION ADJACENT TO TUNNELS

Jiang Zhaohua; Zhang Yongxing; Cai Yu; Shang Kejian

doi:10.13204/j.gyjz201207015

Volume 42 Issue 7

Dec. 2014

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Jiang Zhaohua, Zhang Yongxing, Cai Yu, Shang Kejian. MONITORING AND ANALYSIS OF DEFORMATION OF DEEP ROCK EXCAVATION ADJACENT TO TUNNELS[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(7): 95-99,90. doi: 10.13204/j.gyjz201207015

Citation:

Jiang Zhaohua, Zhang Yongxing, Cai Yu, Shang Kejian. MONITORING AND ANALYSIS OF DEFORMATION OF DEEP ROCK EXCAVATION ADJACENT TO TUNNELS[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(7): 95-99,90. doi: 10.13204/j.gyjz201207015

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MONITORING AND ANALYSIS OF DEFORMATION OF DEEP ROCK EXCAVATION ADJACENT TO TUNNELS

doi: 10.13204/j.gyjz201207015

1.
1. College of Civil Engineering,Chongqing University,Chongqing 400030,China;
2.
2. Key Laboratory of New Technology for Construction of Town in Mountainous Area of Ministry of Education,Chongqing University,Chongqing 400030,China;
3.
3. Institute of Pyrotechnics,Wuhan Polytechnic University,Wuhan 430023,China

Received Date: 2011-11-30
Publish Date: 2012-07-20

Abstract

Abstract

According to the practical engineering of rock deep excavation with a depth about 30 m adjacent to thesubway tunnel in Chongqing, two kinds of supporting scheme were introduced. One was the retaining pile and anchorcable, and the other was the reserved rock wall and the retaining pile. Based on the numerical simulation, the mainmonitored results were analyzed. The result showed that deformation of rock excavation was small; the retaining pileand reserve rock wall could effectively control the displacement of the excavation in rock adjacent to tunnel. The maindeformation of supporting structures concentrated in soil strata in rocky area. The overall stability of the slope couldbe improved by reinforcing the top of slope. The position of the biggest settlement points influenced by the existenceof the adjacent tunnel was corresponding to the vault of tunnels, and the lateral deformation was dominant in thetunnel. The displacement field of the rock would changed owing to the inflnences of continuous media and the changeof tunnel geometric shape, the lateral deformation of the funnel was remarked.
- adjacent to tunnel,
- rock excavation,
- supporting by step,
- anchor pile supporting system,
- deformation monitoring

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References(11)

References

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