The Impacts of Longwall Mining on Groundwater Systems Over Thin Overburden in a Coal Mine of Appalachia Coalfield in United States
定 價(jià)：30 元
- 作者：LiYang(李楊)
- 出版時(shí)間：2016/1/1
- ISBN：9787502471125
- 出 版 社：冶金工業(yè)出版社
- 中圖法分類：TD823.4
- 頁碼：113
- 紙張：膠版紙
- 版次：B1
- 開本：32開
美國東部的阿巴拉契亞煤田（Appalachia Coalfield）大部分為淺埋煤層，但在美國地下長壁開采并沒有淺埋煤層概念。《美國阿拉巴契亞煤田淺埋煤層長壁開采對地下水影響研究（英文版）》研究區(qū)域?qū)儆诖嗣禾�，位于賓夕法尼亞州與西弗吉尼亞州交界處，雖然埋深較淺575ft（175m），但大部分為基巖，工作面長度達(dá)1430ft（435m），《美國阿拉巴契亞煤田淺埋煤層長壁開采對地下水影響研究（英文版）》以上覆巖層地質(zhì)構(gòu)造與水文地質(zhì)條件進(jìn)行評價(jià)、現(xiàn)場觀測、數(shù)值模擬為基礎(chǔ)，采用材料力學(xué)、彈性力學(xué)和損傷力學(xué)等固體力學(xué)理論，較全面與系統(tǒng)地研究了在采動(dòng)影響下在淺埋深超長工作面條件下上覆巖層移動(dòng)特點(diǎn)與對地下水流影響，建立了地下水流采動(dòng)影響的預(yù)測模型，《美國阿拉巴契亞煤田淺埋煤層長壁開采對地下水影響研究（英文版）》為以后我國西部淺埋煤層超長工作面開采提供了實(shí)踐經(jīng)驗(yàn)與理論基礎(chǔ)。
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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