CAJ | 학술논문

广州地铁某盾构区间联络通道在开挖过程中发生塌方,为尽快把塌方后回填的松散地层及开挖轮廓线外一定范围内的地层进行加固止水,先后选择了地面深孔袖阀管注浆、地面三重管高压旋喷桩、洞内WSS工法注浆3种地层加固方案,并采取了左线盾构隧道两端封堵及向隧道内灌水的措施,最终使加固后的地层强度和渗透系数达到了设计要求,为联络通道开挖提供了条件。
엄주지철모순구구간련락통도재개알과정중발생탑방,위진쾌파탑방후회전적송산지층급개알륜곽선외일정범위내적지층진행가고지수,선후선택료지면심공수벌관주장、지면삼중관고압선분장、동내WSS공법주장3충지층가고방안,병채취료좌선순구수도량단봉도급향수도내관수적조시,최종사가고후적지층강도화삼투계수체도료설계요구,위련락통도개알제공료조건。
Collapse occurred during the excavation of a connection gallery of a shield-bored tunnel of Guangzhou Metro.Programs such as deep-hole Soletanche grouting executed from the ground surface,triple-fluid high-pressure jet grouting columns executed from the ground surface and WSS grouting executed from inside the gallery are selected and countermeasures including installing sealing walls in the left tube of the tunnel and filling water into the tunnel are taken,so as to consolidate the back-filled materials in the collapse area and consolidate the ground around the excavation contour.In the end,the strength and permeability of the consolidated ground meet the design requirements,which provides prerequisite for the further excavation of the connection gallery.