|
|||||
|
|
| 软岩厚度对层状顶板破坏特征影响分析 | |
| 引用本文： | 黄旭,马念杰,贾安立,成彦惠,孙即超.软岩厚度对层状顶板破坏特征影响分析[J].岩土力学,2007,28(2):343-346. |
| 作者姓名： | 黄旭 马念杰 贾安立 成彦惠 孙即超 |
| 作者单位： | 1. 中国矿业大学(北京)资源与安全工程学院,北京,100083 2. 湖南省城市学院(朝阳校区)城市管理系,湖南,益阳,413000 3. 中国矿业大学(北京)力学与建筑工程学院,北京,100083 |
| 摘 要： | 顶板冒落是煤矿生产的五大灾害之一。顶板冒落主要与顶板岩层性质、赋存状态等因素有关，其中软弱岩层赋存的厚度变化是顶板冒落的主要原因之一。利用东北大学岩石破裂过程分析系统（RFPA2D），针对煤矿沉积岩层顶板破坏进行力学分析，并对赋存不同厚度软岩的层状顶板的破坏情况进行了数值计算。探讨了不同厚度的软弱岩层对巷道稳定性的影响，得出了不同厚度软弱岩层在巷道开挖后的破坏过程和最后冒落的形状，提出了对不同厚度软弱岩层的层状顶板巷道有针对性的支护措施。该结果对现场施工和试验具有重要的参考价值。 |
| 关 键 词： | 数值模拟 软岩层 层状顶板 稳定性 |
| 文章编号： | 1000-7598-（2007）02-0343-04 |
| 收稿时间： | 2005-03-16 |
| 修稿时间： | 2005-03-16 |
Analysis of influence of weak weak terrain thicknesses on feature of strata roof |
|
| HUANG Xu,MA Nian-jie,JIA An-li,CHENG Yan-hui,SUN Ji-chao.Analysis of influence of weak weak terrain thicknesses on feature of strata roof[J].Rock and Soil Mechanics,2007,28(2):343-346. | |
| Authors: | HUANG Xu MA Nian-jie JIA An-li CHENG Yan-hui SUN Ji-chao |
| Institution: | 1. School of Resoures and Safety Engineering, China University of Mining and Technology, Beijing 100083, China; 2. City Management Department, Hunan City University (Chaoyang Campus), Yiyang 413000, China; 3. School of Mechanics and Civil Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China |
| Abstract: | Roof collapse accidents,potentially in the association with lithology and occurrence of roof terrane etc.,are termed to be one of the most severe calamities in the coal mine exploitation activities.The thickness of weak terrain as one of the most critical elements in roof collapse accidents is discussed in detail here.After carrying out the mechanics analysis for roof failure in coal mines employing rock failure process analysis system(RFPA2D) developed by Northeast University,this paper conducts subsequently the numerical calculation for varying roof failure instances under different weak terrain thicknesses and probes into the impact of weak terrain thicknesses on laneway stability,concluding in the situation of different weak terrain thickness both failure processes after exploiting laneways and shapes formed ultimately by roof collapse.Roof supporting methods for weak terrain in different thicknesses are also listed finally.It is believed that conclusions from this paper are of significant reference not only to construction on site but also for experiments. |
| Keywords: | numerical simulation weak terrain stratiform roof stability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《岩土力学》浏览原始摘要信息 | |
| 点击此处可从《岩土力学》下载免费的PDF全文 | |