以往,煤矿井下的大块岩石或混凝土构件主要用机械破碎法或用炸药爆破法来破碎。但是,如果被破碎物体的硬度较大,则采用机械破碎法就会大大降低效率,而采用炸药爆破法在安全方面又受到很大限制,除特殊情况外,在实际应用上还有许多困难。因此,人们都希望研制出有效的化学破碎法。关于静态破粉剂(“布拉伊斯特”和“埃斯·玛伊特”—商品名)的概况已在有关文献中作过介绍(《国外煤炭》1982年第2期曾发 In the past, large rock or concrete components in coal mines were mainly crushed by mechanical crushing or explosives blasting. However, if the hardness of the object to be broken is large, the mechanical crushing method will greatly reduce the efficiency. However, the use of the explosive blasting method has great limitations on safety. Unless otherwise specified, there are still many difficulties in practical application. Therefore, people all want to develop an effective chemical crushing method. An overview of static dusting agents (“Breast” and “Ester-Mayt” - trade names) has been introduced in the literature (Foreign Coal, Issue 2, 1982