根据矿山实际通讯需要,讨论了研制煤矿井下广播系统的必要性,然后对煤矿井下广播系统的设计原理、设计目标进行了详细阐述。在此基础上,又对井下广播系统的结构组成进行了描述。论文最后对各个系统的功能和特点分类加以解释说明,并从使用效果上印证了研究成果的可行性。 According to the need of mine actual communication, the necessity of developing underground mine broadcasting system is discussed. Then the design principle and design goal of underground mine broadcasting system are expounded in detail. On this basis, the structure of downhole broadcasting system is described. Finally, the dissertation explains the classification of each system’s functions and features, and confirms the feasibility of the research results from the use effect.