中文摘要：

为确定赵庄煤矿3307巷道最合理的巷道宽度取值，采用弹塑性力学能量法理论、薄板理论以及相关的支护理论，通过数学理论推导，得出了煤巷顶板跨中挠度与煤巷宽度的关系曲线。研究表明：当断面宽度小于4．8m时，顶板处于预压状态，围岩相对稳定，顶板沉降量亦符合安全值；当断面宽度大于4．8m时，随着巷道宽度增加，顶板跨中挠度快速增大，直至煤巷顶板破坏。根据理论计算结果，确定赵庄煤矿3307巷道断面宽度理论合理值为4．8～5．2m。该研究成果不仅能指导赵庄煤矿巷道断面设计，而且也可为其他同类巷道断面设计提供理论参考。

英文摘要：

In order to study the most reasonable gateway width of coal face 3307 of Zhao Zhuang Coal Mine, by using the theory of elastic and plastic mechanics, the theories of thin plate, and related supporting theory in the research, the relationship between the mid-span of gateway and its width was obtained. Theoretical study showed that the roof is in pre-pressure state, surrounding rock is relative stability, roof subsidence is also in line with the safety value when the geteway width is less than 4.8 m. With the increase of the gateway width,roof span deflection increases rapidly until coal gateway roof damage when the section width is greater than 4.8 m. The theoretical calculation results determine that the most reasonable value of geteway width of coal face 3307 in Zhaozhuang coal mine is 4.8 - 5.2 m. The result not only guides the design for Zhaozhuang coal mine,but also provides a reference for other coal mines.