中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2015年
2期
32-36,56
,共6页
矿井涌水量预测%大井法%水平廊道法%比拟法%对比分析
礦井湧水量預測%大井法%水平廊道法%比擬法%對比分析
광정용수량예측%대정법%수평랑도법%비의법%대비분석
mine water inflow prediction%virtual large-diameter well method%horizontal collector gallery method%analogue method%comparative analysis
核桃峪煤矿是目前甘肃陇东煤田在建的规模最大矿井，设计单位要求地质勘查部门提交采用不同计算方法对井田先期开采地段正常涌水量和最大涌水量进行预测。通过分析矿井水文地质条件，分别采用了大井法、水平廊道法和比拟法对矿井涌水量做出了预测，并对预测结果进行了对比分析。结果表明：（1）解析法采用实测影响半径计算的涌水量与比拟法的结果相对接近，选用较大值，即为比拟法的结果，先期开采地段最大涌水量为28800m3/d，正常涌水量为20160m3/d；（2）在矿井涌水量预测中，用经验公式计算的承压水影响半径偏小，导致预算的涌水量结果偏大。在对各种预测方法应用条件分析比较的前提下，建议若有条件采用比拟法，应首选比拟法预算矿井涌水量。
覈桃峪煤礦是目前甘肅隴東煤田在建的規模最大礦井，設計單位要求地質勘查部門提交採用不同計算方法對井田先期開採地段正常湧水量和最大湧水量進行預測。通過分析礦井水文地質條件，分彆採用瞭大井法、水平廊道法和比擬法對礦井湧水量做齣瞭預測，併對預測結果進行瞭對比分析。結果錶明：（1）解析法採用實測影響半徑計算的湧水量與比擬法的結果相對接近，選用較大值，即為比擬法的結果，先期開採地段最大湧水量為28800m3/d，正常湧水量為20160m3/d；（2）在礦井湧水量預測中，用經驗公式計算的承壓水影響半徑偏小，導緻預算的湧水量結果偏大。在對各種預測方法應用條件分析比較的前提下，建議若有條件採用比擬法，應首選比擬法預算礦井湧水量。
핵도욕매광시목전감숙롱동매전재건적규모최대광정，설계단위요구지질감사부문제교채용불동계산방법대정전선기개채지단정상용수량화최대용수량진행예측。통과분석광정수문지질조건，분별채용료대정법、수평랑도법화비의법대광정용수량주출료예측，병대예측결과진행료대비분석。결과표명：（1）해석법채용실측영향반경계산적용수량여비의법적결과상대접근，선용교대치，즉위비의법적결과，선기개채지단최대용수량위28800m3/d，정상용수량위20160m3/d；（2）재광정용수량예측중，용경험공식계산적승압수영향반경편소，도치예산적용수량결과편대。재대각충예측방법응용조건분석비교적전제하，건의약유조건채용비의법，응수선비의법예산광정용수량。
The Hetaoyu coalmine is the largest coalmine under construction in the Longdong coalfield, Gansu at present. The designer has demanded the geological exploration party to carry out prediction of normal and maximum mine water inflows of mining district in advance through different estimation methods. Through mine hydrogeological condition analysis, virtual large-diameter well method, horizontal collector gallery method and analogue method have been used to predict mine water inflow respectively and then compara?tively analyzed prediction results. The result has shown:(1) The analytic method uses measured radius of influence estimated water in?flow relatively close to analogue method estimated, using the larger value—a result from analogue method predicted maximum mine in?flow of mining district in advance is 28 800m3/d, normal mine inflow 20 160m3/d. (2) In mine water inflow prediction, confined water ra?dius of influence from empirical formula is on the small side, thus brings on estimated mine inflow on the large side. Under the premise of comparative analysis of each method applied conditions, if conditions permitted, the analogue method should be preferred to estimate mine water inflow.
