Strength response characteristics and coupling support of deep roadway in soft rock masses

With the depth increasing continuously, more complicated of geological conditions, will make intersection in deep soft rock roadway is very difficult to support. In order to solve the intersection problem of difficult to support, combined with the third levels of the Fifth Coal Mine of Hemei, the coupling supporting design—anchor-mesh-cable + truss to control stability of crossing point—is proposed. Based software of FLAC3D, simulate the program applicable in deep soft rock roadway intersection. Application results show that the coupling support technology of anchor-mesh-cable + truss can effectively control the deformation of intersection in deep soft rock roadway.

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Research on Supporting Countermeasure of B103W01 Transport Roadway in Shajihai Coal Mine

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.401-403.2221 ◽

2013 ◽

Vol 401-403 ◽

pp. 2221-2225

Author(s):

Shu Jiang Zhao

Keyword(s):

Coal Mine ◽

Deformation Mechanism ◽

Soft Rock ◽

Single Type ◽

Engineering Practice ◽

Deformation And Failure ◽

Constant Resistance ◽

Supporting Effect ◽

Deformation Mechanics ◽

Coupling Support

For the soft rock roadwaysupporting problems, using the conventional methods cannot effectively controlthe deformation and failure. This paper took B103W01 transport gateway projectin Shajihai coal mine as example and analyzed its deformation failure reasonand deformation mechanism and determined the specific measures of transformingcompound mechanism of deformation mechanics into a single type. In the end, weput forward coupling support technology of constant resistance and largedeformation bolt + hollow grouting anchor + corner grouting steel pipe, whichhad been applied to engineering practice. The monitoring results showed thatthe supporting effect was good. So it can be used for reference for the similarconditions of roadway supporting.

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The Design of Tunnel Anchorage of E-Gong-Yan Suspension Bridge in Soft Rock Masses in Chongqing City

Soil and Rock Behavior and Modeling ◽

10.1061/40862(194)32 ◽

2006 ◽

Author(s):

Z. H. Zhang ◽

Z. L. Feng ◽

Y. C. Lu ◽

H. X. Cheng ◽

N. L. Wei ◽

...

Keyword(s):

Soft Rock ◽

Suspension Bridge ◽

Rock Masses ◽

Chongqing City

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A Study of Soft Rock Roadway Coupling Support in Xiajing Coal Mine

Procedia Engineering ◽

10.1016/j.proeng.2014.10.500 ◽

2014 ◽

Vol 84 ◽

pp. 812-817

Author(s):

Li Xuefeng ◽

Cheng Guihai ◽

Li Xiaoquan ◽

Zhang Ruichong

Keyword(s):

Coal Mine ◽

Soft Rock ◽

Soft Rock Roadway ◽

Coupling Support ◽

Rock Roadway

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Research on Supporting Technology of Wind Drift at B103W01 Workface in ShajiHai Coal Mine

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.501-504.1827 ◽

2014 ◽

Vol 501-504 ◽

pp. 1827-1831

Author(s):

Xiao Yu Zhang ◽

Yu Ming Tian ◽

Ai Dong He ◽

Zhan Han

Keyword(s):

Large Deformation ◽

Field Test ◽

Coal Mine ◽

Soft Rock ◽

Wind Drift ◽

Deformation And Failure ◽

Working Face ◽

Constant Resistance ◽

Test Project ◽

Coupling Support

The deformation and failure problems in soft rock supporting cannot be effectively controlled with conventional methods. This paper put forward the coupling support technologies by the use of large deformation constant-resistance bolt, large deformation constant-resistance cable and bottom-grouting pipes, with the analysis of deformation and failure reseasons, combing with verifications in field-test project at B103W01 working face, State Grid Energy abundance Coal Limited Shajihai Coal Mine. It also provides the reference for the tunnels supporting under similar conditions.

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