MINING METHOD FOR UNDERGROUND RESOURCES, AND HYDROLYZABLE BLOCKING AGENT FOR USE IN SAID METHOD

摘要

This mining method for underground resources comprises pressurizing a fluid packed into a winze having cracks formed therein, thereby growing the cracks or further developing cracks, and collecting underground resources via these cracks, characterized in that a hydrolyzable blocking agent for blocking a channel control material for temporarily clogging the cracks is forced into the fluid.