本文關(guān)鍵詞：京西煤田沖擊地壓的地質(zhì)動(dòng)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(zhì)動(dòng)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(shù)大學(xué)礦業(yè)學(xué)院,遼寧阜新123000

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

Keyword：:rockburst geodynamic environment stress field tectonic concave

課題項(xiàng)目：國(guó)家自然科學(xué)基金資助項(xiàng)目（51104085）; 遼寧省自然科學(xué)基金資助項(xiàng)目（201204407）; 遼寧省高等學(xué)校優(yōu)秀人才支持計(jì)劃資助項(xiàng)目（LJQ2013035）

作者信息：會(huì)員可見(jiàn)

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