Sentence examples for test of rock from inspiring English sources
Their results reproduced salient phenomena commonly observed in actual shear test of rock joints, including the shear strength hardening, softening and dilation.
Through physical mechanical test of rock, theoretical and numerical simulation analyses of rock, the analysis model of the roadway overlying strata structure was established, and its parameters quantified.
The productive test of rock pile hole drilling which drilling depth is 80m and hole diameter is 2m at fourth tender section on Qingzhi highway, GuiZhou province, shows that the working device optimized and improved well meet the requirements of the pile hole drilling construction under hard formation conditions.
The characteristics of pseudo-random signal for non-destructive testing of rock bolts are introduced.
Due to the transient nature of the loading, dynamic tests of rock materials are very different from and much more challenging than their static counterparts.
The experiment has shown that non-destructive testing of rock bolts based on pseudo-random signal is feasible with high precision.
The majority of direct shearing tests of rock joints have been conducted under normal stress constraint in literatures (Roosta et al. 2006; Park and Song 2013; Indraratna et al. 2015).
Based on the test results and preliminary numerical analysis of four large scale dynamic testing of rock support (Tests 1, 2, 4, and 5), a modified test (Test 6) was designed at LKAB Kiirunavaara underground mine.
In this section, the direct shear tests of rock joints with various roughness are modelled using the hybrid finite-discrete element method to investigate the effect of joint roughness on the shear failure process.
This paper explores the use of dynamic testing of rock bolts, currently used for collar load estimation as a means for indirect measurement of the effective installed bolt length, in order to determine potentially broken bolts.
In this paper, non-destructive testing of rock bolts is proposed based on pseudo-random signal, owing to the deficiencies of the conventional detecting method of stress wave reflection.
