A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental study on bursting liability index of coal considering creep pre-damage
Abstract In order to explore the influence of creep pre-damage on bursting liability of coal and rock, the creep pre-damage treatment of coal with different stress levels (0%, 30%, 45%, and 60%) was carried out, and the bursting liability index test was carried out. The variation rules of uniaxial compressive strength, impact energy index, elastic energy index, and dynamic failure time with different degrees of creep pre-damage was analyzed. The bursting liability of coal is evaluated comprehensively. The results show that with the increase of creep pre-damage degree, the uniaxial compressive strength, elastic energy index, and impact energy index of coal sample first increase and then decrease, and the dynamic failure time first decreases and then increases. The comprehensive evaluation result of coal sample bursting liability changes from weak impact to strong impact, then to weak impact, and finally to no impact. This paper provides a reference for the study of rock burst of coal under the influence of creep.
Experimental study on bursting liability index of coal considering creep pre-damage
Abstract In order to explore the influence of creep pre-damage on bursting liability of coal and rock, the creep pre-damage treatment of coal with different stress levels (0%, 30%, 45%, and 60%) was carried out, and the bursting liability index test was carried out. The variation rules of uniaxial compressive strength, impact energy index, elastic energy index, and dynamic failure time with different degrees of creep pre-damage was analyzed. The bursting liability of coal is evaluated comprehensively. The results show that with the increase of creep pre-damage degree, the uniaxial compressive strength, elastic energy index, and impact energy index of coal sample first increase and then decrease, and the dynamic failure time first decreases and then increases. The comprehensive evaluation result of coal sample bursting liability changes from weak impact to strong impact, then to weak impact, and finally to no impact. This paper provides a reference for the study of rock burst of coal under the influence of creep.
Experimental study on bursting liability index of coal considering creep pre-damage
Liu, Weizhen (author) / Yang, HuaQing (author)
2021
Article (Journal)
Electronic Resource
English
BKL:
57.00$jBergbau: Allgemeines
/
38.58
Geomechanik
/
57.00
Bergbau: Allgemeines
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
| DOAJ | 2021
| British Library Conference Proceedings | 2012