CAJ | 학술논문

大南湖北露天煤矿首采区东南部需要揭露Ⅲ火烧岩区一部分，这使得烧变岩水成为露天煤矿矿井充水的主要水源。资源勘探阶段的水文地质资料表明，烧变岩区赋水空间发育、透水能力强，储存量非常可观，但由于受资源勘探阶段水文地质勘探工程量制约，水文地质条件未能详细查明，现有水文地质成果尚不能满足首采区对烧变岩水疏排设计的要求。对烧变岩地下水资源进行模拟开采性抽水试验，获取Ⅲ火烧区的水文地质参数，利用数值模拟的方法，运用MODFLOW软件建立了III火烧区地下水数值模型，并模拟计算出了Ⅲ火烧区地下水储存量。经验证，本次模拟所取得成果与煤矿实际情况相符，能够作为首采区矿坑疏排水设计依据。
대남호북로천매광수채구동남부수요게로Ⅲ화소암구일부분，저사득소변암수성위로천매광광정충수적주요수원。자원감탐계단적수문지질자료표명，소변암구부수공간발육、투수능력강，저존량비상가관，단유우수자원감탐계단수문지질감탐공정량제약，수문지질조건미능상세사명，현유수문지질성과상불능만족수채구대소변암수소배설계적요구。대소변암지하수자원진행모의개채성추수시험，획취Ⅲ화소구적수문지질삼수，이용수치모의적방법，운용MODFLOW연건건립료III화소구지하수수치모형，병모의계산출료Ⅲ화소구지하수저존량。경험증，본차모의소취득성과여매광실제정황상부，능구작위수채구광갱소배수설계의거。
A portion of zone III of burnt rocks is needed to be exposed in the southeast of the first mining area in Dananhu northern surface mine, making the water in burnt rocks become the main source of mine water recharge. Hydrogeological data in exploration stage show that water bearing space is developed, the permeability is high, the water reserves are large. But because of the constraints of hydrogeological exploration engineering amount, hydrogeological conditions could not be investigated in detail. The available hydrogeological data could not meet the requirements for the design of water drainage in burnt rocks in first mining zone. Simulated pumping test was conducted for groundwater resources of the burnt rocks, we obtained the hydrogeological parameters of burnt zone III. By using the numerical simulation method and MODFLOW software, we built the numerical model of groundwater in burnt zone III, calculated the groundwater reserves in burnt zone III. Through verification, the simulation results coincided with the actual situation of the mine, and can be used as the dewatering design basis in the first mining zone.