Deformation Failure Characteristics of Coal Body and Mining Induced Stress Evolution Law

Table 2

The area distribution of Sierpinski gasket.

𝑘	0	1	2	3	4	⋯	𝑘	⋯
𝐿𝑘	𝐿𝑐	2^−1𝐿𝑐	2^−2𝐿𝑐	2^−3𝐿𝑐	2^−4𝐿𝑐	⋯	2^−𝑘𝐿𝑐	⋯
𝑆pore	0	1/4	7/16	37/64	91/256	⋯	1−(3/4)^𝑘	⋯