Numerical Study of TBM Excavated Coal Mine Roadway Support Design

The application of FLAC2D software long ditch coal mine extraction tunnel without support boltgrouting. Anchor when the anchor rope supporting and strengthening supporting state ofroadwaywere simulated and analyzed the change of roadway surrounding rock under differentsupport forms. Demonstrated the possibility that the current anchor cable anchor supporting andanalysis under the condition of the coal wall broken grouting bolt is the necessity of reinforcement.

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Numerical Study of Damage Evolution Law of Coal Mine Roadway by Particle Flow Code (PFC) Model

Geotechnical and Geological Engineering ◽

10.1007/s10706-019-00803-6 ◽

2019 ◽

Vol 37 (4) ◽

pp. 2883-2891 ◽

Cited By ~ 3

Author(s):

Wan-rong Liu ◽

Xiao Wang ◽

Chuan-ming Li

Keyword(s):

Coal Mine ◽

Damage Evolution ◽

Numerical Study ◽

Particle Flow ◽

Particle Flow Code ◽

Evolution Law ◽

Mine Roadway

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The Research and Application of FLAC3D in Optimization of Roadway Support

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1010-1012.1568 ◽

2014 ◽

Vol 1010-1012 ◽

pp. 1568-1573

Author(s):

Hai Feng Du

Keyword(s):

Numerical Simulation ◽

Coal Mine ◽

Basic Process ◽

Simulation Research ◽

Numerical Simulation Result ◽

Mine Roadway ◽

Roadway Support

This article describes the basic process of numerical simulation, and an example of Xinyu coal mine roadway numerical simulation research. And the support scheme is proposed by the numerical simulation result.

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Measurement and Characteristics Analysis of In Situ Stress in Expanding Area of Tao’er Coal Mine

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.90-93.1732 ◽

2011 ◽

Vol 90-93 ◽

pp. 1732-1735

Author(s):

Hu Jun He ◽

Li Hui Sun ◽

Sheng Rui Su ◽

Shu Gang Wang ◽

Ben Sheng Yang

Keyword(s):

Coal Mine ◽

Tectonic Stress ◽

In Situ Stress ◽

Parameters Optimization ◽

Test Results ◽

Support Design ◽

Characteristics Analysis ◽

Roadway Support ◽

The Stability

In order to fully understand and correctly evaluate the stability of overlying strata and surrounding rock, in-situ stress of south main roadway, north main roadway and bypass in shaft station of expanding area, Tao’er coal mine was tested by KX-81-style triaxial stress gauge of hollow inclusion. The test results show that tectonic stress is main in in-situ stress of expanding area, Tao’er coal mine, horizontal principal stress is westeast distribution, 31.13-27.42MPa size, 27.42°-275° direction. Each stress state is not identical, vertical stress is basically slightly less than the weight of the rock covering on unit area. Application of measuring principle of in-situ stress and analysis of field measurement provide a reliable basis for roadway support design and parameters optimization in expanding area of Tao’er coal mine, ensure safety and smooth construction of roadway.

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