邹庄井田水文地质条件分析研究

Analytic Investigation of Hydrogeological Condition in Zouzhuang Minefield

通过对井田内水文地质条件及可采煤层赋存情况的分析,对井田内含水层和隔水层进行了划分,并对各主要含、隔水层(组、段)的岩性、厚度、埋藏条件、分布规律及水位、水质、富水性和补给、径流、排泄条件及各含水层(组、段)之间的水力联系进行了详细阐述。分析研究了矿井的充水因素,指出在留设防水(砂)煤岩柱条件下,开采3～10煤层时,新生界第四含水层(组)为间接充水含水层,直接充水水源为二叠系主采煤层顶底板砂岩裂隙水;开采10煤层时,正常情况下太原组1灰距10煤底板较远,对开采10煤层无直接影响,但在由断层作用导致断层间距缩短或对口的部位有突水危险。此结果为矿井今后煤层开采过程中降低水害威胁、制定防治水对策提供了帮助。

Based on the hydrogeological condition and mineable coal seam hosting situation analysis,separated out aquifers and aquifuges in the minefield and expounded lithology,thickness,burying condition,distribution pattern of each main aquifer（group,sect） and aquifuge（group,sect） in the minefield,water level,water quality,water yield property and recharge,runoff,discharge conditions,as well as hydraulic connection between aquifers（groups,sects） in detail.Analytically investigated mine water filling factors,pointed out during the mining of Nos.3~10 coal seams under safety pillar leaving against water（sand） condition,Cenozoic No.4 aquifer（group） is indirect water filling aquifer,while the immediate water filling source is from Permian main mineable coal floor sandstone fissure water;during the mining of No.10 coal seam,under the normal condition,since the interval between Taiyuan Formation No.1 limestone and No.10 coal floor is rather large,thus no direct impact from the aquifer,but because of faulting caused interval shortening even if lined up may have water bursting hazard.The result can help setting down of water control measures to reduce water disaster threatening henceforth.