本发明公开了一种基于石墨基弥散微封装燃料的堆芯结构，包括约束容器、包壳和燃料元件，所述燃料元件采用一个或多个拼接的弥散微封装燃料，所述弥散微封装燃料包括基体，所述基体采用石墨基，基体内弥散燃料颗粒，基体上还开设有多个冷却剂孔；所述包壳的轴向两端分别与约束容器的底部和顶部连接，包壳和约束容器连接作为堆芯结构的骨架；包壳内部用于插入热管或流通冷却剂；一个或多个拼接的弥散微封装燃料容纳在约束容器内，且包壳贯穿一个或几个拼接弥散微封装燃料的冷却剂孔。本发明利于简化堆芯结构，降低装配难度，降低燃料运行温度、提高燃料结构稳定性，且能够同时满足多种反应堆需求的多用途核燃料。

The invention discloses a core structure based on graphite-based dispersive micro-encapsulated fuel, including a constrained container, a cladding and a fuel element. The fuel element adopts one or more spliced dispersive micro-encapsulated fuels. The dispersive micro-encapsulated fuel includes a matrix. The matrix adopts a graphite matrix, and the fuel particles are dispersed in the matrix. The matrix also has multiple coolant holes. The axial ends of the cladding are connected with the bottom and top of the constraint container respectively, and the cladding and the constraint container are connected as the skeleton of the core structure. The inside of the cladding is used for inserting heat pipe or circulating coolant ; one or more spliced dispersed micro-encapsulated fuel is accommodated in a constrained container, and the cladding penetrates one or several coolant holes of the spliced dispersed micro-encapsulated fuel. The invention is beneficial to simplify the core structure, reduce the assembly difficulty, reduce the fuel operating temperature, improve the stability of the fuel structure, and can simultaneously meet the needs of multiple reactors for multi-purpose nuclear fuel.