中国煤炭地质
中國煤炭地質
중국매탄지질
Coal Geology of China
2015年
10期
65-69
,共5页
瞬变电磁法%富水性%岩层标定%砂岩与泥岩厚度比值参数
瞬變電磁法%富水性%巖層標定%砂巖與泥巖厚度比值參數
순변전자법%부수성%암층표정%사암여니암후도비치삼수
TEM%water yield property%strata demarcating%sandstone/mudstone thickness ratio parameter
在陕北侏罗纪煤田榆横矿区,直罗组砂岩含水层直接影响到2煤的安全开采,为查明其富水性,采用对低阻体反映灵敏的TEM方法结合测井数据、钻探资料、岩性特征来圈定低阻异常富水区:即利用测井数据标定层位、利用砂岩与泥岩厚度比值参数结合视电阻率低阻异常推断富水区.实例表明,在全区推断的6处砂岩富水区中,经钻孔验证,与实际揭露情况较吻合.
在陝北侏囉紀煤田榆橫礦區,直囉組砂巖含水層直接影響到2煤的安全開採,為查明其富水性,採用對低阻體反映靈敏的TEM方法結閤測井數據、鑽探資料、巖性特徵來圈定低阻異常富水區:即利用測井數據標定層位、利用砂巖與泥巖厚度比值參數結閤視電阻率低阻異常推斷富水區.實例錶明,在全區推斷的6處砂巖富水區中,經鑽孔驗證,與實際揭露情況較吻閤.
재협북주라기매전유횡광구,직라조사암함수층직접영향도2매적안전개채,위사명기부수성,채용대저조체반영령민적TEM방법결합측정수거、찬탐자료、암성특정래권정저조이상부수구:즉이용측정수거표정층위、이용사암여니암후도비치삼수결합시전조솔저조이상추단부수구.실례표명,재전구추단적6처사암부수구중,경찬공험증,여실제게로정황교문합.
In the Yuyang-Hengshan mining area, northern Shaanxi Jurassic coalfield, the Zhiluo Formation sandstone aquifer has di-rectly impacted the safe winning of coal No.2. To find out water yield property, using the low-resistivity body sensitive TEM combined with well logging, drilling data and strata features delineated water enrichment area low-resistivity anomalies. That is to use well log-ging data marked horizons, sandstone/mudstone thickness ratio parameters combined with apparent resistivity low-resistivity anomaly deduced water enrichment areas. Case studies have shown that after drilling verification, totally deduced 6 sandstone water enrichment areas are rather accord with practically revealed instances.
