摘要
《煤炭矿井防治水设计规范》中规定评价含水层富水性,是利用以孔径91 mm、抽水水位降深10 m为准的钻孔单位涌水量来进行评价,而在应用过程时常面临抽水孔径和抽水水位降深不统一的问题。在传统的单位涌水量的换算方法中,通常对3次抽水试验资料进行拟合修正降深,之后进行井径的换算,并且为方便计算假定R_(91)与R_(孔)相同,其计算误差有待于进一步验证。本研究基于前人3次抽水试验实测数据,提出首先采用迭代计算进行井径的换算,并分别计算R_(91)和R_(孔),之后采用MATLAB软件进行Q-S曲线的拟合展开分析。探究结果表明:提出的方法能够分别计算出R_(91)和R_(孔),两种方法计算的单位涌水量分别为0.148 L/(s·m)和0.1303L/(s·m),结果表明将R_(91)与R_(孔)等效处理,会存在一定的误差。
The Code for the Design of Water Prevention and Control in Coal Mines stipulates that the evaluation of water richness ofaquifers is to evaluatespecific yieldbased on a well diameter of 91mm and a depth of 10m of pumping water level.But the application process often faces the problem of inconsistency in pumping aperture and pumping water level reduction.In the traditional conversion method of specific yield,the three pumping test data are usually fitted and corrected to reduce the depth,and then the well diameter is converted.And the calculation error needs to be further verified in order to facilitate the calculation assuming that R_(91) and R_(孔)the same.Based on the measured data of three pumping tests,it is proposed that the conversion of well diameter is first calculated by iterative calculation,and R_(91) and R_(孔)are calculated respectively.Then the Q-S curve is fitted and analyzed by MATLAB software.The results show that the proposed method can calculate the R_(91) and R_(孔)respectively,and the unit water inflow calculated by the two methods is 0.148 L/(s·m)and 0.1303 L/(s·m).The results show that there will be certain errors when R_(91) and R_(孔)are equivalently treated.
作者
周立涛
李旭
ZHOU Li-tao;LI Xu(School of earth and environment,Anhui university of science and technology,Huainan 232001,Anhui,China)
出处
《地下水》
2024年第1期5-7,37,共4页
Ground water
基金
安徽省自然科学青年项目(2108085QD165)
安徽省大学生创新创业训练项目(S202210361013)。
