高应力软岩巷道围岩变形机理及支护技术研究

doi:10.11799/ce201409029

Abstract

Abstract:

According to the problem of roadway in high stressed soft rock with large deformation of surrounding rock, serious failure of support structure, in spite of roadway maintenance in No.2 coal mine of Zhaogu, deformation mechanism of roadway in high stressed soft rock is studied with the application of laboratory testing, theoretical analysis and field measurement. The result indicates the surrounding rock is integrated in a short time after roadway excavation. But the mechanical properties of shallow part of surrounding rock is changed. Strength decreases rapidly and surrounding rock deformation increases sharply. Support resistance can inhibit the surrounding rock deformation when it reaches some range. However, plastic zone and deformation can’t be changed when the support resistance exceeds the range. The proposed plan on surrounding rock controlling is fast anchor net spray firstly, reservation deformation in 520mm in advance secondary support which uses U-shape steel. Field application shows that the plan can effectively control the deformation of surrounding rock of roadway in high stressed soft rock.

Key words: high pressure, soft rock, roadway support, deformation mechanism

CLC Number:

TD353

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URL: http://www.coale.com.cn/EN/10.11799/ce201409029

http://www.coale.com.cn/EN/Y2014/V46/I9/86

[1]	. Decompression Driving Technology of Underlying Roadway in Close Seam Mining Face [J]. COAL ENGINEERING, 2019, 51(5): 87-91.
[2]	. The research on Stability Mechanism and Control Technology of Surrounding Rocks in Extractive Collision [J]. COAL ENGINEERING, 2019, 51(2): 42-45.
[3]	. Study on Supporting Technology of Soft Rock Roadway under High Geo-stress in Deep Mine [J]. COAL ENGINEERING, 2019, 51(1): 44-46.
[4]	. The Applicationof Rheological stress recovery method for in situ stress measurement in deep coalmine [J]. COAL ENGINEERING, 2016, 48(7): 71-74.
[5]	. Research on Supporting Technology of Soft Rock Roadway with High Stress in Deep Mining Condition [J]. COAL ENGINEERING, 2016, 48(5): 53-55.
[6]	. The research on the freezing temperature field by masonry wall in the western soft rock freeze wellbore [J]. COAL ENGINEERING, 2015, 47(8): 41-43.
[7]	. Research of Deep crushing rock roadway support Technology of shunhe coal mine [J]. COAL ENGINEERING, 2015, 47(8): 47-49.
[8]	. Bolt- grouting Repairing Reinforcement Technology and Parameters of Deep Soft Rock Failed Roadway [J]. COAL ENGINEERING, 2015, 47(8): 50-54.
[9]	. The Technology Research of the Control of Floor Heave Based on the Condition of the Broken Floor and Confined Water of Roadway [J]. COAL ENGINEERING, 2015, 47(5): 58-60.
[10]	. Study on deformation mechanism of surrounding rock and technology of coupling support [J]. COAL ENGINEERING, 2015, 47(5): 33-35.
[11]	. The Study and Application of Synergetic Anchoting Technology of Heavily Stressed Soft-rock Roadway in Deep Ground [J]. COAL ENGINEERING, 2015, 47(4): 41-43.
[12]	. Support Parameters Optimization and Engineering Practices of Roadway under Section Pillar of the Adjacent Coal Seam [J]. COAL ENGINEERING, 2015, 47(4): 44-46.
[13]	. The expansion velocity research of cretaceous soft rock before the freeze wall circling [J]. COAL ENGINEERING, 2015, 47(11): 39-41.
[14]	. Large Section Roadway Supporting Technology in High Horizontal Stress [J]. COAL ENGINEERING, 2014, 46(7): 34-36.
[15]	. The residual mining floor roadway layout and supporting in coal seam broken area [J]. COAL ENGINEERING, 2014, 46(4): 10-13.

Study on Deformation Mechanism of Surrounding Rock of Roadway in High Stressed Soft Rock and Its Support Technology

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