Optimization on Gateway Section of Soft Coal Seam and Hard Roof and Supporting Technology

Lu Chen; Chuan Wei Zang; Feng Hai Yu; Xiang Kun Yu

doi:10.4028/www.scientific.net/AMM.90-93.622

Paper Titles

An Optimization Model of Extension Sets on Supporting Scheme for Foundation Pit and its Application
p.601

Experimental Study on the Anisotropic Properties of Undisturbed Loess
p.605

A Project Practice about the Foundation Treatment of a High-Rise Building with Large Space Requirement at the Ground Floor
p.613

Anchorage Effect on Fractured Rock and Cavern Stability
p.618

Optimization on Gateway Section of Soft Coal Seam and Hard Roof and Supporting Technology
p.622

Creep Test of Hard Rock and Modified Generalized Kelvin Creep Model
p.626

Liquefaction-Induced Damage of Banqiao School Following the 2008 Wenchuan Ms 8.0 Earthquake
p.633

Dimensional Influence of Tunneling on Adjacent Pile Foundation
p.639

Discussion on Design and Construction of Soil and Foundation in Coastal Saline Soil Area
p.645

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 90-93Optimization on Gateway Section of Soft Coal Seam...

Optimization on Gateway Section of Soft Coal Seam and Hard Roof and Supporting Technology

Abstract:

Support invalidity of a roadway have a largely influence on production safety of coal mines, especially the soft coal roadway, which deforms heavily. To solve this problem, it began from the gateway section optimization, based on the actual geological condition of Chang-gouyu Mine. The computational model was established up to optimize tunnel shapes using FLAC^3D. The scopes of plastic zone, stress field, displacement field were compared and analysed for different shapes of roadway. The irregular trapezoid section is adopted, then the bolt support parameters were designed and field application was done. By using the irregular trapezoid, the stress distribution around the roadway is improved and the deformation and plastic zone is decreased. Under the geological conditions of the soft coal seam and hard roof strata, the stability of roadway was effectively controlled by using optimized trapeziform cross-section and bolting support.

You might also be interested in these eBooks

Advances in Civil Engineering, ICCET 2011

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 90-93)

Pages:

622-625

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.90-93.622

Citation:

Cite this paper

Online since:

September 2011

Authors:

Lu Chen, Chuan Wei Zang, Feng Hai Yu, Xiang Kun Yu

Keywords:

Hard Roof, Numerical Simulation, Section Optimization, Soft Coal Seam

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Yunliang Tan, Chuanxiao Liu. Prediction and control for the stability of gate surrounding rock mass (China University of Ming & Technology press, Xuzhou 1999). (In Chinese)

Google Scholar

[2] Yunliang Tan, Jianguo Ning, Tongbin Zhao, et al. Deep Surrounding Rock Destruction and Control (Coal Industry Press, Beijing 2011). (In Chinese)

Google Scholar

[3] Tongbin Zhao, Yunliang Tan, Yuming Zhang, et al. Journal of Mining & Safety Engineering, Vol. 23 (2006), p.224. (In Chinese)

Google Scholar

[4] Hua Yin. Ground Pressure and Strata Control, Vol. 4 (2001), p.88. (In Chinese)

Google Scholar

[5] Biaocan Ling, Xianghong Huang. Journal of Huainan Institute of Technology, Vol. 22 (2002), p.6. (In Chinese)

Google Scholar

[6] Yonghao Dai, Weizhong Chen, Quansheng Liu, et al. Chinese Journal of Rock Mechanics and Engineering, Vol. 23 (2004), p.4960. (In Chinese)

Google Scholar

[7] Hesheng Yuan. Bolt support technology in coal mine (Coal Industry Press, Beijing 1997).(In Chinese)

Google Scholar