淮南煤田潘谢矿区构造控水特征研究

发布时间：2018-01-09 14:00

本文关键词：淮南煤田潘谢矿区构造控水特征研究　出处：《安徽理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：潘谢矿区位于安徽省中西部,是淮南煤田的重要组成部分。本文运用构造、水文地质及构造控水理论知识,采取逐级分块、构造演化及逐渐控制的方法手段对潘谢矿区勘探资料展开深入研究,分析概括矿区构造发育规律及水文地质特征,研究总结潘谢矿区构造控水特征,主要得到以下几点结论.(1)潘谢矿区主体复向斜内部发育以NWW～NW走向褶皱为主,矿区发育的断层主要是NW向张性断层、NEE-NE向斜切正断层及近EW向断层,总体以正断层为主。矿区构造主要经历印支期(受NS向挤压)、燕山期(早期受NW-SE向挤压,晚期转变为拉张作用)及喜山期(主要ES向WN倾伏的不均衡沉降)等改造影响共同作用形成如今形态。(2)潘谢矿区地下水主要包括松散层、煤系砂岩、太灰、奥灰等含水层(组),各含水层(组)之间有一定隔水层,且各含水层水主要以静储量为主,被采矿抽排水不断消耗,矿区内地下水整体自西向东发生缓慢径流。其中煤系砂岩水富水性弱,太灰富水性弱-中等,但水压过高,而奥灰富水性弱-强,极其不均一,不同地段差异很大。(3)潘谢矿区含水层初步形成于加里东、华力西期,后经印支、燕山、喜山等运动改造逐渐形成现存状态,矿区周边区域大中断层的阻水作用,使潘谢矿区处于一个较封闭独立的水文地质单元中。潘谢矿区除局部断层裂隙较发育处富水较强外,总体断层富水性差,绝大多数为隔水断层,但在开采扰动情况下,一些隔水断层可能活化成导水通道。最后指出易发断层突水情况:大落差断层切割A组煤及太灰附近,需注意下部紧邻的太灰水井下采掘扰动可能使断层发生活化,以及断层切割煤层与灰岩对口部位为抗压薄弱带难以抵抗太灰高水压等情况,可能使隔水断层变为导水断层,从而发生突水。提出疏水降压、断层带注浆加固,以及留设安全煤岩柱等措施及建议。
[Abstract]:Panxie Mining Area in Anhui Province, is an important part of the Huainan coalfield. This paper uses water control structure, hydrogeological and tectonic theory knowledge, take step by step block, tectonic evolution and control methods gradually to conduct in-depth study of Panxie Mining exploration data, analysis of the characteristics and hydrogeological structure of mining area development, research summary Panxie mine water control structure characteristics, mainly get the following conclusions. (1) the main synclinorium developed inside the Panxie Mining Area at NWW ~ NW trending folds, faults of the mining area is mainly NW to Zhang Xingduan to NEE-NE layer, oblique normal fault and EW trending fault, the normal faults. The tectonic main experience the Indosinian (by NS to the Yanshan period (early extrusion), NW-SE compression, advanced into the role of tension) and Himalayan period (mainly ES to WN plunging uneven settlement) reconstruction effect Now the formation of form. (2) Panxie Mining Area Groundwater mainly including loose layer, coal and sandstone, limestone, etc. the ash Austria aquifer (Group), each aquifer (Group) between a water resisting layer, and the aquifer water mainly in the static reserves mainly by mining drainage time consumption, mine groundwater the whole West slowly to the East. The runoff coal sandstone rich water is too weak, grey water rich weak medium, but the water pressure is too high, and the Ordovician limestone water rich weak strong, extremely uneven, lots of different differences. (3) aquifer in Panxie Mining Area initially formed in Variscan, east of Gary, after the Indosinian, Yanshan and Himalayan movement transformation gradually formed the existing state, water resistance and fault area surrounding the mine, the Panxie Mining Area is in a relatively closed independent hydrogeological unit in Panxie Mining Area. In addition to the local fault fissure is developed at the water rich and strong, the overall poor water rich fault For the vast majority of water, fault, but in the case of mining disturbance, some water into the water channel fault may be activated. Finally, prone to water inrush: large gap fault cutting coal group A and ash too near, the need to pay attention to too close to lower ash wells under mining disturbance may make the fault of life, and the fault cutting coal seam and limestone site with weak compressive counterpart can not resist too gray high pressure etc., may make the water into the water conductive fault fault, and water inrush. The hydrophobic buck, grouting strengthening, and leaving the safety of coal pillar and other measures and suggestions.

【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P641.461

【参考文献】