山东煤炭科技
山東煤炭科技
산동매탄과기
Shandong Coal Science and Technology
2015年
6期
175-176,179
,共3页
烧变岩%疏干降水井%抽水试验%非均质性
燒變巖%疏榦降水井%抽水試驗%非均質性
소변암%소간강수정%추수시험%비균질성
burnt rocks%precipitation dewatering wells%pumping test%heterogeneity
大南湖二号煤矿矿区内中侏罗系西山窑组浅部煤层自燃，导致煤层顶底板围岩烧变，形成孔隙裂隙发育的烧变岩，在地质历史时期内由于大气降水及丰水期地表径流的补给，使得烧变岩孔隙内充满了水。烧变岩含水层对下部煤层的剥离开采是巨大的限制，需要预先疏干烧变岩的水以降低采坑排水压力。成井后的降水井水文地质参数显示烧变岩含水层渗透性极好，为极强富水性岩层，层内水力关系密切，烧变岩含水层的非均质性极强。
大南湖二號煤礦礦區內中侏囉繫西山窯組淺部煤層自燃，導緻煤層頂底闆圍巖燒變，形成孔隙裂隙髮育的燒變巖，在地質歷史時期內由于大氣降水及豐水期地錶徑流的補給，使得燒變巖孔隙內充滿瞭水。燒變巖含水層對下部煤層的剝離開採是巨大的限製，需要預先疏榦燒變巖的水以降低採坑排水壓力。成井後的降水井水文地質參數顯示燒變巖含水層滲透性極好，為極彊富水性巖層，層內水力關繫密切，燒變巖含水層的非均質性極彊。
대남호이호매광광구내중주라계서산요조천부매층자연，도치매층정저판위암소변，형성공극렬극발육적소변암，재지질역사시기내유우대기강수급봉수기지표경류적보급，사득소변암공극내충만료수。소변암함수층대하부매층적박리개채시거대적한제，수요예선소간소변암적수이강저채갱배수압력。성정후적강수정수문지질삼수현시소변암함수층삼투성겁호，위겁강부수성암층，층내수력관계밀절，소변암함수층적비균질성겁강。
The Coal seam in Colliery The Xishanyao Formation of Middle Jurassic spontaneous combustion, leading to the coal seam roof and lfoor rock burnt, The formation pore and fracture development of burnt rocks, In the geological time due to atmospheric precipitation and the abundant water period runoff recharge, Making the burnt rock pores iflled with water. Burnt rock aquifer on the lower coal seam mining stripping is a huge limitation and need to pre dewatering burnt rock water drainage to reduce the pressure of mining pit. The precipitation well hydrogeological parameter well of the display after the burnt rock aquifer permeability good, strong water rich rock, layer hydraulic closely, burnt rock heterogeneity of the aquifer is extremely strong.
