煤田地质与勘探2011，Vol.39Issue(5)：11-14,4.DOI:10.3969/j.issn.1001-1986.2011.05.003
褶皱中和面位置确定及其在六盘水涝河向斜中的应用
Locating neutral surface of fold and its application in Laohe syncline in Liupanshui area
顾宏星 1傅雪海 1季明 2陈莉1
作者信息
- 1. 中国矿业大学资源与地球科学学院,江苏 徐州 221008
- 2. 中国矿业大学矿业工程学院,江苏 徐州 221008
- 折叠
摘要
Abstract
The paper supposed that the rock formations of bending flowage fold is heterogeneous board agglutinated by many isotropic thin layers. Based on elastic thin plate theory, we have studied the questions about locating neutral surface of fold when the rock formation of fold is under pure buckling only, and obtained the location formula of neutral surface of fold with main parameters of modulus of elasticity, Poisson's ratio, and thickness of each rock formation. Combined with Laohe syncline of Liupanshui coalfield in Guizhou province, the neutral surface of Laohe syncline was Located in the fine sandstone of coal seam 9* floor of Longtan Formation, as far as 966m from the bottom of Maokou Formation. The nearer the distance of coal seam to neutral surface was , the less the fold structure influence on gas occurrence was, resulting in less difference between the gas content of coal seam near neutral surface and that of wing of syncline. Our research results have certain steering effects on coal bed methane exploitation and preventing coal and gas outburst.关键词
褶皱中和面/纯弯曲/弹性模量/涝河向斜/瓦斯含量Key words
neutral surface of fold/ pure bending/ modulus of elasticity/ Laohe syncline/ gas content分类
天文与地球科学引用本文复制引用
顾宏星,傅雪海,季明,陈莉..褶皱中和面位置确定及其在六盘水涝河向斜中的应用[J].煤田地质与勘探,2011,39(5):11-14,4.
