Experimental Investigation of the Effects of Water Content on Coal Body Strength and Stability

Zhu, Changxing; Liu, H.; Niu, X.; Ma, H.; Jiao, Z.

doi:10.1007/s11204-022-09809-4

Cited by 4 publications

(1 citation statement)

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“…The uniaxial compressive strength (UCS) of reef limestone is a basic parameter for evaluating mechanical properties, which has been widely studied. Zhu et al [9][10][11] examined bioclastic limestone and found that the density and degree of cementation are key parameters controlling the UCS of bioclastic limestone, while porosity exerts little influence on the UCS. Wang [8] and Wang et al [12] performed laboratory mechanical tests to measure the physico-mechanical properties of reef limestone in the Nansha Islands.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research into the Uniaxial Compressive Strength of Low-Density Reef Limestone Based on Image Recognition

et al. 2023

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Low-density reef limestone is widely distributed in tropical oceans; exploring its mechanical properties is of significance to practices in marine foundation engineering. In this research, laboratory experiments on low-density reef limestones with two different types of porous structures were conducted using image recognition methods to study the special mechanical properties of low-reef limestone. S¯ was defined as the parameter quantifying the pore geometry, and the calculation method of S¯ was optimized based on image recognition data. Finally, the influencing factors of uniaxial compressive strength (UCS) of low-density reef limestone were analyzed, and a modified formula considering pore structure was proposed. The results indicate the following: Image recognition methods were used to determine feasibility and convenience of capturing 2D pore geometric information of specimens. The optimization method of S¯ is conducive to improving automatic image recognition accuracy. Low-density reef limestones with different porous structures show small difference in porosity and density, while they exhibit large differences in pore sizes and UCS. The UCS of low-density reef limestone is found to be jointly influenced by pore structure and density (it increases with the decrease in parameter S¯ and increase in density). The results may provide help for those investigating the mechanical properties of reef limestone and practices in marine foundation engineering.

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Section: Introductionmentioning

confidence: 99%