本文關鍵詞：京西煤田沖擊地壓的地質動力環(huán)境，由筆耕文化傳播整理發(fā)布。

京西煤田沖擊地壓的地質動力環(huán)境

Geodynamic environment of rockburst in western Beijing coalfield

[1] [2] [3] [4]

HAN Jun,ZHANG Hong-wei,LAN Tian-wei,LI Sheng （College of Mining Engineering ,Liaoning Technical University , Fuxin 123000,China）

遼寧工程技術大學礦業(yè)學院,遼寧阜新123000

文章摘要：為了確定京西煤田沖擊地壓災害發(fā)生的地質動力環(huán)境,分析了京西煤田的地質構造、新構造運動、地應力場、地殼應變能,計算了京西煤田各礦井構造反差強度,定量評估了京西煤田的地質動力環(huán)境,討論了京西煤田沖擊地壓的形成機制。研究表明,京西煤田屬于現(xiàn)代地殼隆升區(qū),新構造運動強烈;煤田最大主應力明顯高于全國平均水平,且最大主應力與最小主應力的差別顯著;京西煤田處于地殼高應變密度能區(qū)域,地殼積累了高的彈性應變能;京西構造凹地反差強度大于0.5,該區(qū)域具有發(fā)生沖擊地壓的地質動力環(huán)境,各礦井具有發(fā)生沖擊地壓的地質動力條件。京西煤田地質動力環(huán)境下的沖擊地壓是煤巖體在高構造應力條件下以塊體整體突然破壞而快速釋放能量的過程。

Abstr：To determine the rockburst＇s geodynamic environment of western Beijing coalfield,analyzed geological structure,the neo-tectonic movement,stress field,crustal strain energy,calculated contrast of tectonic concave,assess of the geodynamic environment,and discussed the mechanism of rockburst. Research shows that western Beijing coalfield belongs to modern crustal uplift areas,the neo-tectonic movement is intensive; maximum principal stress is significantly higher than the average value,and the difference of maximum principal stress and minimum principal stress is significant; and the crustal strain energy density is higher than others because of high elastic strain energy. The contrast of tectonic concave is greater than 0. 5,it shows that western Beijing coalfield has the geodynamic condition of rock burst. The rockburst of western Beijing coalfield is coal and rock sudden and rapid damage and release of energy as a whole block at high tectonic stress conditions.

文章關鍵詞：

Keyword：:rockburst geodynamic environment stress field tectonic concave

課題項目：國家自然科學基金資助項目（51104085）; 遼寧省自然科學基金資助項目（201204407）; 遼寧省高等學校優(yōu)秀人才支持計劃資助項目（LJQ2013035）

作者信息：會員可見

  本文關鍵詞：京西煤田沖擊地壓的地質動力環(huán)境，由筆耕文化傳播整理發(fā)布。