Mine water deep well recharge method

• Main Authors: XU YANHUI, WANG GUANGHAO, HAN XUE, ZHOU HAIRUI, ZHANG JIANYIN, ZHANG HAO, ZHANG YU, ZHU KAICHENG, LI YI, SHENG XINLI
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The invention discloses a mine water deep well recharge method. The method comprises the steps of 1, determining a recharge target layer; 2, the water injection rate is predicted; thirdly, the position of a recharge well is selected; 4, designing the position and depth of a final hole; 5, designing a well bore structure; sixthly, a recharge well water injection test is conducted, and the recharge capacity of a target layer is determined; in the third step, a certain safe distance needs to be kept between the drilling track of the recharge well position and the underground roadway and the underground chamber; in the fourth step, a sandstone layer with good permeability is generally selected as a final hole layer. According to the method, the mine water passes through the drilling well with the casing pipe, the deep sandstone aquifer with good fracture development and permeability is selected for reinjection, the mine water treatment pressure is relieved, reinjection cannot generate adverse effects on the ore-b