本文選題：寧正礦區(qū)　切入點：白堊系砂巖　出處：《河北工程大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：白堊系砂巖在鄂爾多斯盆地廣泛分布，其中洛河組水文地質(zhì)條件特殊。下部侏羅系煤層開采形成頂板冒落裂隙將溝通上覆洛河組含水層，礦井遭受頂板水害威脅。因此，系統(tǒng)研究白堊系砂巖的水文地質(zhì)特征及其頂板涌水危險性進行評價，具有重要現(xiàn)實意義。 本文從寧正礦區(qū)煤田地質(zhì)勘探資料入手，結(jié)合區(qū)域地質(zhì)條件，分析白堊系砂巖的水文地質(zhì)特征，洛河組砂巖在礦區(qū)東、西部滲透性弱，中部為中等滲透性；礦區(qū)大部分為中等富水區(qū)，中部分布強富水區(qū)；洛河組地下水礦化度高，循環(huán)交替緩慢，以靜儲量為主。通過計算，8#煤開采形成的導(dǎo)水裂隙帶將導(dǎo)通上部洛河組含水層，，砂巖水將沿裂隙帶涌入礦井，采用“大井法”和比擬法計算了礦井涌水量，礦井系統(tǒng)面臨洛河組砂巖水的頂板水害威脅。 運用“三圖法”對礦區(qū)洛河組承壓水頂板水害危險性進行分區(qū)，礦區(qū)西部主要為較危險區(qū)，中部強富水區(qū)為危險區(qū)，呈東西向帶狀分布，向東由于富水性變?nèi)踝優(yōu)檩^危險和較安全區(qū)；在礦區(qū)東南部，為主要的較危險區(qū)，安全區(qū)則為導(dǎo)水裂隙帶未導(dǎo)通上部含水層的區(qū)域。評價結(jié)果對礦井防治水工作提供了指導(dǎo)，對區(qū)域內(nèi)相似礦區(qū)具有借鑒意義。
[Abstract]:The Cretaceous sandstone is widely distributed in the Ordos basin, among which the Luohe formation has special hydrogeological conditions. The roof caving fissure formed in the lower Jurassic coal seam will communicate with the upper overlying Luohe formation aquifer, and the mine will be threatened by roof water disaster. It is of great practical significance to systematically study the hydrogeological characteristics of the Cretaceous sandstone and the assessment of the roof water inrush hazard. Based on the data of coalfield geological exploration in Ningzheng mining area and combined with regional geological conditions, this paper analyzes the hydrogeological characteristics of Cretaceous sandstone. The sandstone of Luohe formation has weak permeability in the east and west of the mining area, but medium permeability in the middle part. Most of the mining areas are medium water-rich areas with strong water-rich areas in the central part, the groundwater mineralization degree of Luohe formation is high, the circulation is slow, and the static reserves are the main one. Through the calculation of the water-conducting fissure zone formed by the coal mining of Guan8#, the upper Luohe formation aquifer will be diverted. The sandstone water will flow into the mine along the fissure zone. The mine water discharge is calculated by using the "large well method" and the analogy method. The mine system is faced with the roof water hazard threat of the sandstone water in the Luohe formation. In this paper, the risk of water hazard of confined water roof of Luohe formation in mining area is divided by "three maps method". The west part of mining area is mainly dangerous area, and the strong water rich area in the middle area is dangerous area, which is distributed in the east and west direction. Eastward, due to the weakening of water enrichment into more dangerous and safer areas; in the southeast of the mining area, the main dangerous area, and the safety zone is the area where the upper aquifer of the water-conducting fissure zone is not diverted. The evaluation results provide guidance for the prevention and control of mine water. It can be used for reference for similar mining areas in the region.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TD745

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