煤田地质与勘探
煤田地質與勘探
매전지질여감탐
COAL GEOLOGY & EXPLORATION
2015年
3期
61-65
,共5页
邱梅%施龙青%滕超%邢同菊%于放
邱梅%施龍青%滕超%邢同菊%于放
구매%시룡청%등초%형동국%우방
煤层底板突水%危险性评价%脆弱性指数%层次分析法
煤層底闆突水%危險性評價%脆弱性指數%層次分析法
매층저판돌수%위험성평개%취약성지수%층차분석법
water inrush of coal seam floor%risk evaluation%vulnerability index%analytic hierarchy process
从地质构造、含水层、隔水层、开采条件等方面详细分析了赵官井田10煤层底板突水的影响因素,确定了断层强度指数、褶皱分维值、“底板充水含水层组”水压、“底板充水含水层组”富水性、奥灰富水性、隔水层厚度、泥岩比率、底板破坏深度8个主控因素作为10煤层底板突水危险性评价的决策指标,并建立了各主控因素专题图;运用层次分析法(AHP)确定了各主控因素的权重系数,建立了基于“脆弱性指数法”的底板突水危险性评价模型,对10煤层底板突水危险性进行了定量评价,结果表明:在井田的南部煤层露头处脆弱性指数小,突水可能性较小;在井田的北部,特别是在井田东北部,脆弱性指数大,突水危险性较大。
從地質構造、含水層、隔水層、開採條件等方麵詳細分析瞭趙官井田10煤層底闆突水的影響因素,確定瞭斷層彊度指數、褶皺分維值、“底闆充水含水層組”水壓、“底闆充水含水層組”富水性、奧灰富水性、隔水層厚度、泥巖比率、底闆破壞深度8箇主控因素作為10煤層底闆突水危險性評價的決策指標,併建立瞭各主控因素專題圖;運用層次分析法(AHP)確定瞭各主控因素的權重繫數,建立瞭基于“脆弱性指數法”的底闆突水危險性評價模型,對10煤層底闆突水危險性進行瞭定量評價,結果錶明:在井田的南部煤層露頭處脆弱性指數小,突水可能性較小;在井田的北部,特彆是在井田東北部,脆弱性指數大,突水危險性較大。
종지질구조、함수층、격수층、개채조건등방면상세분석료조관정전10매층저판돌수적영향인소,학정료단층강도지수、습추분유치、“저판충수함수층조”수압、“저판충수함수층조”부수성、오회부수성、격수층후도、니암비솔、저판파배심도8개주공인소작위10매층저판돌수위험성평개적결책지표,병건립료각주공인소전제도;운용층차분석법(AHP)학정료각주공인소적권중계수,건립료기우“취약성지수법”적저판돌수위험성평개모형,대10매층저판돌수위험성진행료정량평개,결과표명:재정전적남부매층로두처취약성지수소,돌수가능성교소;재정전적북부,특별시재정전동북부,취약성지수대,돌수위험성교대。
The main factors influencing the water inrush of seam floor are studied based on geologic structure, aq-uifer, aquiclude and mining conditions. Eight parameters are taken as indexes for forecasting the water inrush risk, including fault intensity index, fold fractal dimension, water pressure, water abundance of “lower aquifers”, water abundance of Ordovician limestone, aquiclude thickness, the percentage of mudstone and the depth of destroyed floor caused by coal mining. The paper uses analytic hierarchy process (AHP) method to sequence the main con-trolling factors, and then to establish the vulnerability index for evaluating water inrush risk in the floor of coal seam 10. The evaluation results show that the value of vulnerability index and water inrush risk are small in the southern part and high in the northeast of the minefield.