复杂开采条件工作面冲击影响因素及危险区域分析

发布时间：2018-07-03 04:11

本文选题：冲击倾向性 + 开采技术条件　；参考：《辽宁工程技术大学学报(自然科学版)》2017年01期

【摘要】：为解决开采条件复杂且煤体具有强冲击倾向性的工作面容易发生冲击地压的问题,以特定工程为例,通过研究冲击地压的影响因素(包括开采深度、冲击倾向性、原岩应力、顶板岩层结构特征、煤层厚度变化、地质构造、开采技术条件),确定各因素对冲击地压的影响程度.采用数值模拟方法分析工作面开采过程中煤柱应力分布以及演变规律,确定煤柱的冲击危险性,并运用多因素耦合法和模糊综合评判的方法确定工作面冲击地压的危险性和危险区域.研究表明:在对冲击地压影响因素进行分析的基础上,采用多因素耦合法对开采条件复杂的工作面进行冲击危险区域预测具有科学性与实用性,有助于受冲击威胁工作面的安全回采.
[Abstract]:In order to solve the problem that rock burst is easy to occur in the face with complex mining conditions and strong impact tendency of coal body, taking a specific project as an example, the influence factors of impact ground pressure (including mining depth, impact tendency, original rock stress) are studied by means of studying the factors affecting the impact ground pressure, such as mining depth, impact tendency, original rock stress, etc. The structural characteristics of roof strata, coal seam thickness change, geological structure, mining technical conditions), determine the impact of various factors on the impact of rock pressure. The stress distribution and evolution law of coal pillar in coal face mining process are analyzed by numerical simulation method, and the impact risk of coal pillar is determined. The multi-factor coupling method and fuzzy comprehensive evaluation method are used to determine the danger and dangerous area of rock burst in working face. The results show that the multi-factor coupling method is scientific and practical to predict the impact risk area of the mining face with complex mining conditions on the basis of the analysis of the influencing factors of the impact ground pressure. It is helpful for the safe mining of the face threatened by impact.
【作者单位】：辽宁工程技术大学矿业学院;
【基金】：国家自然科学基金项目(51304110)
【分类号】：TD324

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