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白集煤矿井筒开挖的数值模拟分析
发表时间：2011-07-31 浏览量：1546 下载量：662
| 全部作者： | 杨嫣，邵鹏，刘霞，杨大兵，任广学，范芝宇 |
| 作者单位： | 中国矿业大学深部岩土力学与地下工程国家重点实验室；中国矿业大学力学与建筑工程学院 |
| 摘 要： | 连云港市煤炭工业公司白集煤矿三水平主副斜井均为穿层井筒，采用先主后副的开挖方式。其中，-760～-660 m标高段断层节理发育，围岩极其破碎。为研究此标高段内副井开挖对主井稳定性的影响，应用FLAC3D 程序分析副井开挖时主井围岩位移场及应力场的变化规律。结果表明：副井开挖对主井围岩稳定性影响较大，得出的影响规律可为支护设计和施工提供定量依据。 |
| 关 键 词： | 数值模拟；FLAC3D；主副井；开挖影响；位移场；应力场 |
| Title： | Numerical simulation analysis of shaft excavation of Baiji Mine |
| Author： | YANG Yan, SHAO Peng, LIU Xia, YANG Dabing, REN Guangxue, FAN Zhiyu |
| Organization： | State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology; School of Mechanics and Engineering, China University of Mining and Technology |
| Abstract： | The three level main and auxiliary shafts of Baiji Mine of Lianyungang Coal Industry Company are all throughout shafts. Its excavation sequence is first the main shaft and then the auxiliary shaft. There are a great number of faults and rock joints, so the surrounding rock between -760 m m and -660 m are seriously broken. For studying the affects of main shaft stability which influenced by auxiliary shaft excavation in these broken rock mass, this paper uses the FLAC3D software to analyze the change rule of the displacement field and the stress field of main shaft�s surrounding rock when excavating the auxiliary shaft. The results show that the excavation of auxiliary shaft would cause great influence on the stability of main shaft�s surrounding rock. This paper comes up with this influence law providing quantitative basis for support design and construction. |
| Key words： | numerical simulation； FLAC3D； main and auxiliary shaft； excavation effect； displacement field； stress field |
| 发表期数： | 2011年7月第14期 |
| 引用格式： | 杨嫣，邵鹏，刘霞，等. 白集煤矿井筒开挖的数值模拟分析[J]. 中国科技论文在线精品论文，2011，4（14）：1258-1263. |
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