Development of A Thermal Expansion Crack Agent

With straw, coal-based carbon black, silica-alumina carbon black (produced with coal gangue), calcium peroxide, potassium perchlorate catalyst, and binder potato starch as raw materials, according to a certain ratio of 33.43:14.33:20:30:1:1.25, prepare a new cracking agent. The product preparation process is simple and adapts to the conditions of existing industrialized production equipment. Through the small displacement cracking test, it can be found that the right side rock cracking effect of the rock platform is significant, and the big stone is cracked by large blocks; the small-displacement well rock fracture test compares the effect of cracking stone before and after, it has good cracking effect and can be fixed point charge, oriented cracking and large displacement cracking stone test results show that the stones after the megalithic cracking can be easily removed and no gravel generated, and no gravel splash phenomenon occurs, which can confirm the development of thermal expansion cracking agent can be used in any large-area cracked rock structure. It is simple to calculate and easy to operate. It does not affect the selection and distribution of existing drilling positions, and can adapt to the existing environment and conditions for the use of thermal expansion cracking agent; cracking stone is fast and efficient. No excessive thermal expansion cracking agent was wasted during the process, which has a high research value.