王超,张广超,赵西坡,周广磊,张勇,吕凯

• 1:兖矿能源集团股份有限公司
• 2:山东科技大学能源与矿业工程学院

摘要(Abstract)：

目前煤矿普遍采用的冲击危险性评价方法忽视了岩层层位、厚度等对冲击危险性评价结果的影响,致使现有冲击危险性评价体系对不同地层结构下顶板冲击危险性评价准确度不足。根据采空区覆岩破坏程度,建立了全悬顶结构、半悬顶结构及完全移动结构3类顶板结构力学模型,分析了各类顶板结构类型下的应力传递机制,提出了基于3类顶板结构与实测矿震数据相结合的动静载叠加应力计算方法及考虑顶板结构特征的冲击危险性评价指标及评价方法,并分析了岩层强度系数、关键层厚度以及岩层下沿距工作面距离对冲击特征参数p的影响规律;依托鄂尔多斯市某矿2201工作面、济宁市某矿63_上06工作面及菏泽市某矿3301工作面地层结构条件,进行了顶板岩层结构下动静载叠加应力及冲击危险性评价参数的计算,并根据计算结果进行了冲击危险性评价验证分析。

关键词(KeyWords)： 冲击地压;顶板结构;力学模型;支承压力;危险性评价

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金面上资助项目(52374098);; 山东省自然科学基金优秀青年基金资助项目(ZR202211070181);; 山东省高等学校青创团队发展计划资助项目(2022KJ212)

作者(Author): 王超,张广超,赵西坡,周广磊,张勇,吕凯

DOI: 10.13532/j.jmsce.cn10-1638/td.2024.02.003

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