1Study on Double Control of Groundwater Quantity and Level in Taiyuan BasinMEI Zi-teng, KANG Ai-qing, GUO Wei-wei, ZHANG Yun-xin5-8,122Comprehensive Treatment of Black and Odorous Water Body in Northern Area ——Case Study of Dazhangzhuang Alkaline Drainage Ditch in Xiong'an New AreaWANG Shi-jing, ZHENG Ming-ke22-253Evaluation of Groundwater Over-Exploitation Area and Analysis of Comprehensive Treatment Effect in TianjinLI Hua, DONG Xiao-min, ZHANG Wei32-354Research on the Performance of Flood Storage and Detention of Improved Grass SwaleLIU Yu-zhu, PENG Jing, LI Xin-yan, HE Ya-qing75-77,825Precipitation Analysis in Tai'an Based on M-K Method and SPI IndexZHANG Yao-xin, YAO Chuan-hui, WANG Gang97-1006Application of Statistical Test and Processing Method in Groundwater Monitoring DataKANG Cai-qin105-1077Feasibility Study of Soil Density Method Applied to Sediment Stratification in Rivers and LakesCHAI Zhi-yong, WANG Bin108-1108Research on Key Technology of Pipe Jacking Construction in Hard RockHAN Hong, LI Yun-long, WANG Wei, QI Fei119-123