| 急斜放顶煤开采围岩破坏规律立体模拟研究 |
| |
| 引用本文： | 邵小平,石平五.急斜放顶煤开采围岩破坏规律立体模拟研究[J].采矿与安全工程学报,2006,23(1):107-110. |
| |
| 作者姓名： | 邵小平 石平五 |
| |
| 作者单位： | 西安科技大学,能源学院,陕西,西安,710054 |
| |
| 基金项目： | 国家自然科学基金资助项目(50274058)，高等学校博士点专项基金资助项目(20040704002) |
| |
| 摘 要： | 通过大型组合堆体立体模拟架，对急斜煤层开采过程中围岩及上覆层变形破坏特征进行了模拟研究．研究发现急斜水平分段放顶煤开采围岩破坏主要向顶煤和顶板两个方向发展．顶煤在冒放过程中可能成拱．随着工作面的推进和顶煤的放出，破坏向上发展．煤层开采后形成的沉陷由最初在地表生成的孔洞发展为孔洞间的贯通．形成塌陷坑．随着塌陷坑周边岩体的垮落，最终形成主要沿顶板及走向发展的深槽形塌陷坑．沉陷表现为反复多次沉陷，塌陷坑内垮落体整体呈现为由底板侧朝顶板侧的台阶式下降分布．
|
| 关 键 词： | 水平分段放顶煤 离层裂隙 孔间贯通 深槽型塌陷坑 |
| 文章编号： | 1673-3363(2006)01-0107-04 |
| 修稿时间： | 2005年9月30日 |
Solid Simulation Study of Failure Law of Surrounding Rock in Mining Steep Seams |
| |
| SHAO Xiao-ping,SHI Ping-wu.Solid Simulation Study of Failure Law of Surrounding Rock in Mining Steep Seams[J].Journal of Mining and Safety Engineering,2006,23(1):107-110. |
| |
| Authors: | SHAO Xiao-ping SHI Ping-wu |
| |
| Abstract: | Destruction characters of surrounding rock and overlying bed were researched by means of the large solid experiment frame in mining steep seams.It was discovered that the destruction of surrounding rock develops towards roof and upper coal,which is possible to form an arch in surrounding rock in mining process.The subsidence of steep seams is different from the subsidence of gently inclined seams.The holes which appear initially will be transfixed and form a surface collapse pit in the process of mining steep seams.The collapse degree of the rocks near roof is greater than that of the rocks near bottom. The surface subsidence is characterized by repeated and collapse rock is a declined step-like distribution as mining inferior sections.Therefore,the collapse pit with deep groove will be formed at last. |
| |
| Keywords: | horizontal section top coal caving layer cranny transfixion in the middle of holes collapse pit with deep groove |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
