CAJ | 학술논문

为了给下组煤层的安全开采提供理论指导，在华北地层奥陶系顶部存在隔水层的理论基础上，对东滩煤矿奥陶系顶部岩层的隔水性进行论证分析。利用揭露奥灰的地质钻探资料和地质水文试验以及钻孔测井等手段，分析奥陶系顶部结构特征和岩溶裂隙发育情况，结合奥灰含水层井下放水试验过程中的钻孔出水量，并借助测井资料的反复对比、验证，从而确定奥灰顶部隔水层的厚度。研究结果对于东滩煤矿高水压下的下组煤开采有借鉴意义，能够更加准确地评价奥灰底板突水危险性，为下组煤开采的防治水工作提供参考。
위료급하조매층적안전개채제공이론지도，재화북지층오도계정부존재격수층적이론기출상，대동탄매광오도계정부암층적격수성진행론증분석。이용게로오회적지질찬탐자료화지질수문시험이급찬공측정등수단，분석오도계정부결구특정화암용렬극발육정황，결합오회함수층정하방수시험과정중적찬공출수량，병차조측정자료적반복대비、험증，종이학정오회정부격수층적후도。연구결과대우동탄매광고수압하적하조매개채유차감의의，능구경가준학지평개오회저판돌수위험성，위하조매개채적방치수공작제공삼고。
In order to provide theoretical guidance for the safe mining of the lower coal group, demonstration analysis was made on the water-resisting property of the rock stratum on the top of the Ordovician system based on the theory that the water-resisting layers existed on the top of the Ordoviciansystem in North China. Analysis was carried out on the structural characteristics and the karst fissure development of the top strata of the Ordovician system according to the geological drilling data of Ordovician system,the hydro-geologic tests and borehole logging data. Based on water yield from boreholes in the process of water discharging tests in Ordovician water-resisting layers and through repeated comparison and verification of the logging data,the thickness of the water-resisting layer on the top of the Ordovician system was determined. This research result has reference significance for the safe mining of the lower coal group under high water pressure in Dongtan Mine,can be used to accurately evaluate the Ordovician floor water-inrush risk and provide reference for the water hazard prevention during the mining of the lower coal group.