本文選題：水文地質(zhì)條件 + 水文地質(zhì)參數(shù)　； 參考：《東華理工大學》2015年碩士論文

【摘要】：礦井涌水量是礦山安全生產(chǎn)設計、合理開發(fā)的重要依據(jù),其涌水量預測的可靠程度直接影響礦床開采的合理性和安全性。目前涌水量預測主要利用水文地質(zhì)參數(shù)進行計算,不同水文地質(zhì)條件決定了不同的水文地質(zhì)參數(shù),因此,水文地質(zhì)參數(shù)的對比分析對礦井涌水量預測有重要意義。本文以地質(zhì)條件相似、地貌條件不同的峽口、長臺螢石礦區(qū)為例,采用抽水試驗法確定水文地質(zhì)參數(shù),用綜合分析法對比分析水文地質(zhì)參數(shù),并用“大井法”、“集水廊道法”、“比擬法”預測涌水量。主要結(jié)論如下:(1)在研究區(qū)域內(nèi)地下水共劃分為3類:松散巖類孔隙水;基巖風化裂隙水;構(gòu)造裂隙水。區(qū)域地下水位埋深較淺,地下水水位受地形變化和降雨量變化的影響較大,地下水流向與地形坡向大致一致,地下水分水嶺與地表水分水嶺一致。峽口礦區(qū)地下水補給水源以大氣降水入滲補給為主,為HCO3-Ca型水,水文地質(zhì)條件簡單。長臺礦區(qū)有大面積溶蝕塌陷,地下水補給以大氣降水和地表徑流入滲補給為主,為HCO3-Ca-Na型水,水文地質(zhì)條件復雜。礦井充水水源為大氣降水、地表水、裂隙水和采空區(qū)積水,充水通道為人工通道、導水鉆孔、各類裂隙。(2)峽口礦區(qū)混合滲透系數(shù)為0.0446m/d,導水系數(shù)為4.9 m2/d,彈性釋水系數(shù)為5.04×10-3,單位涌水量(110 mm孔徑)為0.0849L/s·m;長臺礦區(qū)混合滲透系數(shù)為0.0337m/d,導水系數(shù)為1.93m2/d,彈性釋水系數(shù)為1.08×10-4,單位涌水量(91mm孔徑)為0.0291 L/s·m。峽口礦區(qū)位于補給區(qū),地下水運動呈非穩(wěn)定態(tài);長臺礦區(qū)位于徑流區(qū),地下水運動呈穩(wěn)定態(tài)。兩礦區(qū)含水層(帶)均為弱富水性,弱透水性,峽口礦區(qū)含水層(帶)滲透性、富水性強于長臺礦區(qū)。(3)根據(jù)礦區(qū)水文地質(zhì)條件,并結(jié)合老采區(qū)涌水量變化規(guī)律,選取“集水廊道法”預測涌水量為未來礦井最小涌水量,“比擬法”預測涌水量為最大涌水量。峽口礦區(qū)243 m、203 m、163 m標高最小涌水量分別為為29 m3/d、196.24 m3/d、252.66 m3/d,最大涌水量分別為73.16 m3/d、206 m3/d、371 m3/d。長臺礦區(qū)74 m、-36 m標高最小涌水量分別為228.62 m3/d、190.70 m3/d,最大涌水量分別為1734 m3/d、3726 m3/d。
[Abstract]:Mine water discharge is an important basis for the design and rational development of mine safety production. The reliability of its water inflow prediction directly affects the rationality and safety of mining.At present, hydrogeological parameters are mainly used to calculate water inflow, and different hydrogeological conditions determine different hydrogeological parameters. Therefore, the comparative analysis of hydrogeological parameters is of great significance to the prediction of mine water inflow.Taking the Xiakou and Changtai fluorite ore areas with similar geological conditions and different geomorphological conditions as examples, the hydrogeological parameters are determined by pumping test method, the hydrogeological parameters are analyzed by comprehensive analysis method, and the "large well method" is used to analyze the hydrogeological parameters.The method of catchment corridor and the method of analogy are used to predict the inflow of water.The main conclusions are as follows: (1) groundwater in the study area is divided into three categories: loose rock pore water, bedrock weathered fissure water and tectonic fissure water.The groundwater level is affected greatly by the changes of topography and rainfall, the direction of groundwater flow is roughly consistent with the slope of topography, and the watershed of groundwater is consistent with the watershed of surface water.The groundwater recharge source in Xiakou mining area is dominated by atmospheric precipitation infiltration recharge, which is HCO3-Ca type water, and the hydrogeological conditions are simple.There is a large area of dissolution and collapse in Changtai mining area, and the recharge of groundwater is dominated by atmospheric precipitation and surface runoff infiltration, which is HCO3-Ca-Na type water, and the hydrogeological conditions are complex.The water source for mine water filling is precipitation, surface water, fissure water and water in goaf.The mixed permeability coefficient of Xiakou mining area is 0.0446 m / d, the water conductivity coefficient is 4.9 m ~ 2 / d, the elastic water release coefficient is 5.04 脳 10 ~ (-3), the pore diameter of unit inflow is 110mm), the mixing permeability coefficient of Changtai mining area is 0.0337 mm / d, the water conductivity coefficient is 1.93 m ~ (-2) d, and the elastic water release coefficient is 1.08 脳 10 ~ (-4).The pore diameter per unit inflow is 0.0291 L / s / s m.Xiakou mining area is located in recharge area, groundwater movement is unstable, Changtai mining area is located in runoff area, and groundwater movement is stable.The aquifer (zone) of the two mining areas is both weakly water-rich and weak permeable, and the aquifer (zone) of Xiakou mining area is permeable, which is stronger than that of Changtai mining area. (3) according to the hydrogeological conditions of the mining area and combined with the law of water discharge in the old mining area,The "catchment corridor method" is chosen as the minimum water inflow in the future, and the "analogy method" is used to predict the maximum water inflow.In Xiakou mining area, the minimum water inflow at the elevation height of 243 m ~ (3 / d) and 163 m ~ (-1) is 29 m3 / d ~ 196.24 m ~ (3 / d) ~ (252.66) m ~ (3 / d), respectively, and the maximum discharge is 73.16 m ~ (-3) / d ~ (-1) ~ (206) m ~ (3 / d) ~ (-1) m ~ (3 / d).The minimum water inflow at the elevation of 74 m ~ 36 m in Changtai mining area is 228.62 m3 / d ~ 190.70 m ~ (3 / d), respectively, and the maximum water inflow is 1734 m ~ (3 / d) ~ 3 726 m ~ (3 / d) 路d ~ (-1) respectively.
【學位授予單位】：東華理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P641.4

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本文編號：1756832