综采工作面顶板来压期间矿压显现剧烈，易出现支架压死等事故，威胁矿井安全、高效的开采。准确预测和计算分析采场顶板来压步距对预防顶板事故有积极意义。本文在矿山压力及岩层控制理论的基础上，采用理论分析、数值模拟等方法对煤矿采场顶板来压步距的计算做进一步研究。论文的主要内容和结论有： （1）结合采场顶板老顶断裂特点及边界条件，基于弹性薄板理论构造符合实际的综采机械化采煤工作面老顶变形挠曲形式，推导出的采场顶板初次来压步距及周期来压步距计算公式可分析工作面倾向长度的影响；并通过大量不同综采工作面的工程实例验证了本文理论公式的正确性。 （2）理论计算与实测对比发现，当工作面倾向长度较小时，利用梁式结构模型计算采场顶板来压步距的误差较大，采用本文计算公式预测煤矿综采工作面顶板来压步距更为合理。 （3）结合算例，利用采场顶板初次来压步距及周期来压步距的数学表达式对顶板来压步距的影响因素进行分析，得出工作面倾向长度、老顶岩层厚度、老顶岩层抗拉强度以及老顶承受上覆荷载等因素对回采工作面初次来压步距及周期来压步距的影响规律。 （4）利用工程实例对采场顶板在初次来压阶段及周期来压阶段的控制技术分别进行分析，并结合本文的理论分析，选择合理的控制技术应用在工程实例中，经工程验证，顶板控制技术运用较为成功。 论文研究成果可为煤矿采场顶板初次来压步距及周期来压步距的预测提供参考，为煤矿顶板管理提供理论依据。

Fully mechanized working face roof pressure appeared intense during roof weighting, easy to cause working face roof accidents, seriously threaten the safety of mine production.Accurate prediction and calculation of stope overlying roof strata weighting interval has a positive significance of preventing roof accidents.Paper on the basis of underground pressure and roof control theory, the numerical simulation and theoretical analysis method for coal mining roof weighting interval calculation to do further research. The main conclusions are as follows: (1)Combined with the boundary conditions and breaking characteristics of main roof,and based on the elastic thin plate theory, the deflection equation of the fully mechanized working face is constructed in accordance with the actual,the calculation formula of the stope roof first weighting interval and cycle weighting interval not only reflects the influence of the working face strike length to the roof weighting interval, but also can analyze the influence of the working face incline length on the roof weighting interval.The correctness of the theoretical formula in this paper is verified by a large number of engineering examples. (2)The theoretical analysis shows that the calculation of the stope roof weighting interval by the beam structure model can not reflect the influence of the working face incline length on the roof weighting interval.After contrast found when the working face length is small, the calculation of beam model error is bigger.Using the calculation formula of this paper to predict roof first weighting interval and periodic weighting interval is more reasonable. (3)Combined with the instance,using mathematical expressions of stope roof weighting interval to analyze the influence factors of the roof weighting step distance,the influence rules of working face length, main roof rock thickness, tensile strength of main roof and overburden load and other factors on the stope roof weighting interval are obtained. (4)Based on the engineering example,the control technology of stope roof in the weighting stage is analyzed,and combined with the theoretical analysis of this paper,the selection of reasonable control technology is applied in the engineering example,the application of roof control technology is successful through engineering verification. The research results of this paper can provide reference for the prediction of the stope roof first weighting interval and the periodic weighting interval, and provide the theoretical basis for the coal mine safety production management.