This doesn't fit the term abstract imo but that doesn't matter I suppose. Looks like you used a high iso or over-sharpened (based on the noise in the shadows). More likely a high iso as the image doesn't appear sharp to me. It does fit the challenge with texture though. Maybe an off center composition would improve it a bit.
An interesting choice for meeting the subject challenge - very abstract and different. The image could be a little more dramatic. A little more focus would have helped this image score higher. A good, solid entry into the challenge.