The Impacts of Longwall Mining on Groundwater Systems Over Thin Overburden in a Coal Mine of Appalachia Coalfield in United States
定 价：30 元
- 作者：LiYang(李杨)
- 出版时间：2016/1/1
- ISBN：9787502471125
- 出 版 社：冶金工业出版社
- 中图法分类：TD823.4
- 页码：113
- 纸张：胶版纸
- 版次：B1
- 开本：32开
美国东部的阿巴拉契亚煤田（Appalachia Coalfield）大部分为浅埋煤层，但在美国地下长壁开采并没有浅埋煤层概念。《美国阿拉巴契亚煤田浅埋煤层长壁开采对地下水影响研究（英文版）》研究区域属于此煤田，位于宾夕法尼亚州与西弗吉尼亚州交界处，虽然埋深较浅575ft（175m），但大部分为基岩，工作面长度达1430ft（435m），《美国阿拉巴契亚煤田浅埋煤层长壁开采对地下水影响研究（英文版）》以上覆岩层地质构造与水文地质条件进行评价、现场观测、数值模拟为基础，采用材料力学、弹性力学和损伤力学等固体力学理论，较全面与系统地研究了在采动影响下在浅埋深超长工作面条件下上覆岩层移动特点与对地下水流影响，建立了地下水流采动影响的预测模型，《美国阿拉巴契亚煤田浅埋煤层长壁开采对地下水影响研究（英文版）》为以后我国西部浅埋煤层超长工作面开采提供了实践经验与理论基础。
CHAPTER 1 INTRODUCTION
1．1 Longwall Mining
1．2 Purpose and Scope
1．2．1 Purpose
1．2．2 The scope of study area
1．3 Literature Review
1．3．1 Aquifer protection in ]ongwall mining
1．3．2 Effect of overburden depth
1．3．3 Hydraulic effect of panel width to overburden depth ratio
1．3．4 Groundwater modeling
1．4 Research Purpose and Methodology
CHAPTER 2 GEOLOGY
2．1 Characterization of Regional and Local Geology of Study Area
2．1．1 Permian-Dunkard Group
2．1．2 Pennsylvanian age-Monongahela Group
2．1．3 Quaternary system
2．1．4 Hydrogeology
2．2 Lithologic and Strength Characteristics of the Overburden Strata
2．3 Description and Construction of Study Area
2．3．1 Mining conditions
2．3．2 Site description
CHAPTER 3 DETERMINATION OF HYDRAULIC PARAMETERS
3．1 Introduction
3．2 Construction and Installation of Water Wells
3．2．1 WI water well
3．2．2 W2 water well
3．2．3 W3 water well
3．2．4 W4 water well
3．3 The Installation of Water Elevation Data Logger
3．4 Slug Test to Determine the Hydraulic Conductivity
3．5 Water Level Data before Mining Panel B6
3．6 Post Mining Panel B6 Water Levels
3．7 Slug Tests to Determine the Post-mining of Panel B6 Hydraulic Conductivity
3．8 Summary
3．8．1 Before mining Panel B6
3．8．2 Post mining Panel B6
CHAPTER 4 GROUNDWATER MODELING
4．1 Purpose of Groundwater Modeling
4．2 Groundwater Modeling Program
4．3 Theory of Groundwater Modeling
4．4 Concept Model and Grid Design
4．4．1 Concept model design
4．4．2 FEM mesh generate and boundary conditions
4．5 Pre-subsidence Groundwater Flow System in Panel B6 and B5
4．5．1 Pre-subsidence hydraulic conductivities selection in model
4．5．2 Pre-subsidence boundary condition and water table in model
4．6 Post-subsidence Groundwater Flow System
4．7 Summary and Conclusions
CHAPTER 5 SUMMARY AND CONCLUSIONS
REFERENCES
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