基于采动顶、底板岩层损伤的冲击地压预测

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摘要为探索微震法预测冲击地压的原理和应用技术，在装备高精度微地震监测设备的煤矿，开展采掘过程连续的岩体破裂现场监测，使用自主研发的采动岩体破裂规律分析和冲击地压预测软件MapRAS进行预测研究和工程应用。发现采动过程岩体微破裂在顶板和底板的深度扩散是产生冲击地压的大概率事件；提出采动顶、底板深度损伤是冲击地压成核重要因素的观点。建立应用微震数据辨识顶、底板采动破裂损伤深度的函数关系式和算法。分析显示顶板和底板深度损伤存在联动，与顶板关键层的周期破断及其后效相对应，反映出顶板、底板的加–卸载过程，在华亭煤田多显现为巷道底板破断型冲击地压。经工程应用检验，预测效能较高，应用效果良好。

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关键词 ：采矿工程, 采掘扰动, 岩体破裂, 深度损伤, 微震, 冲击地压, 预测

Abstract：To explore the rockburst prediction principle and applied technology by microseismic method，in mine with high precision microseismic monitoring equipment，the continuous rock crack in mining process on site is monitored and analyzed with laws of rockburst induced by mining and self-made rockburst prediction software MapRAS. The result shows that deep diffusion of rock microcrack induced by mining at roof and floor is the main reason for the occurrence of rockburst. It is proposed that the deeply damaged of roof and floor induced by mining is an important factor in rockburst nucleation. The function and algorithm for identifying rupture damage depths of roof and floor by using microseismic data are established. Analysis displays that between damage depths of roof and floor exist linkage and there is corresponding to cycle breakage of roof key layer，as well as its after-effect，which reflects the loading and unloading processes of roof-floor. Most of the rockbursts in Huating coal field are roadway floor rupture. The engineering test indicates the method has higher prediction performance and good application effect.

Key words： mining engineering mining disturbance rock failure deeply damaged microseism rockburst prediction

收稿日期: 2012-03-14

引用本文:

李铁1，2，王维1，2，谢俊文3，徐元强3，张玉亮3，李守峰3，王利利4，赵华山4. 基于采动顶、底板岩层损伤的冲击地压预测[J]. 岩石力学与工程学报, 2012, 31(12): 2438-2444.
LI Tie1，2，WANG Wei1，2，XIE Junwen3，XU Yuanqiang3，ZHANG Yuliang3，LI Shoufeng3，. ROCKBURSTS PREDICTION BASED ON ROCK DAMAGE OF ROOF AND FLOOR INDUCED BY MINING. , 2012, 31(12): 2438-2444.

链接本文:

http://www.rockmech.org/CN/Y2012/V31/I12/2438

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