深部承压水上开采煤层底板破坏特征  

Failure characteristics of coal seam floor in deep confined water

作　　者：刘伟韬 王东辉 穆殿瑞 

机构地区：[1]山东科技大学矿业与安全工程学院,山东青岛266590

出　　处：《辽宁工程技术大学学报（自然科学版）》2017年第9期920-926,共7页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金(51274135;51428401)

摘　　要：为研究深部承压水上开采煤层底板破坏特征,以梁宝寺煤矿2~#井3501工作面采场条件为工程背景,基于FLAC3D数值仿真软件,建立承压水上煤层深部开采的流-固耦合数值模型,对工作面回采过程中煤层底板破坏特征进行分析研究.研究结果表明:煤层开采后底板承压水导升高度明显增高,最终达到峰值19 m,煤层底板破坏深度先增大后趋于平缓,且当工作面推进至120 m时达到最大值为18 m,通过理论计算与现场实测的进一步验证,模拟结果与理论计算和现场实测值较为接近,由此可见FLAC3D数值仿真软件可以用于深部承压水上开采煤层底板破坏特征的研究.In order to study failure characteristics of coal seam floor in deep confined water, this paper established the fluid solid coupling numerical model to analyze the failure characteristics of coal seam floor in the mining process of the working face based on the engineering background of the 3501 working face of No. 2 well in the coal mine of Liang Baosi Coal Mining Group by using the FLAC3D numerical simulation software. The results of studies show that after mining in the coal seam floor, confined water conductivity significantly increased and eventually reached a peak of 19 m. The failure depth of coal seam floor first increased and then leveled off. When the working face advanced to 120 m, it reached a maximum of 18 m. Through the theoretical calculation and the further validation of field measurement, the simulation results are close to the theoretical calculation and field measured value. Thus the FLAC3D numerical simulation software can be used in the study of failure characteristics of coal seam floor in deep confined water.

关 键 词：承压水 深部开采 流固耦合 底板破坏 煤层底板 

分 类 号：TD745[矿业工程—矿井通风与安全]