基于Hoek-Brown准则分析工作面围岩应力场

基于Hoek-Brown准则分析工作面围岩应力场
田茂霖;肖洪天;赵军
【期刊名称】《山东科技大学学报（自然科学版）》
【年(卷),期】2017(036)001
【摘要】The distribution of stress field around a working face plays a very important role in mine excavation and supporting.In this paper the stress field around the working face of extremely thick coal mining in Tashan Colliery was analyzed by developing a numerical method based on Hoek-Brown strength criterion and using the data of micro-seismic monitoring to determine the mechanical parameters of rock.A mechanical model based on Hoek-Brown crite-rion was firstly established by using the secondary development platform of FISH in FLAC.Then parameters nee-ded by the proposed model were determined by using microseismic monitoring data.Finally,the stress concentration area of surrounding rock and the peak stress value were obtained by numerical simulation.Results show that the simulated results obtained by adopting the proposed method are in good agreement with the in-situ measurements at 8103 working face in Tashan Colliery.Thus,the proposed method can provide not only reference for the design of further coal mining and advance supporting but also a new method for the rational and effective use of microseismic monitoring data.%围岩应力场分布特征是矿山开采与巷道支护的重要依据。

本研究发展了基于 Hoek-Brown强度准则的数值方法，并应用微地震
监测资料获取岩体的力学参数，分析了塔山煤矿特厚煤层开采工作面围岩应力场。

首先通过 FISH 语言二次开发平台在 FLAC软件中创建基于 Hoek-Brown准则的力学模型，然后根据微震监测得到的数据确定力学模型所需的力学参数，最后由数值模拟得围岩应力集中区及峰值应力值。

结果表明：采用该方法所获得的数值模拟结果与塔山煤矿8103工作面现场监测值有较好的一致性，为进行下一步煤层开采和超前支护方案的设计提供了依据，也为有效利用微震监测资料提供了新思路。

【总页数】8页(P78-85)
【作者】田茂霖;肖洪天;赵军
【作者单位】山东科技大学土木工程与建筑学院，山东青岛 266590; 山东科技大学山东省土木工程防灾减灾重点实验室，山东青岛 266590;山东科技大学土木工程与建筑学院，山东青岛 266590; 山东科技大学山东省土木工程防灾减灾重点实验室，山东青岛 266590;同煤集团技术中心，山西大同 037003
【正文语种】中文
【中图分类】TD323
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