考虑注浆圈情况下的任意形状隧道渗流场研究

Study on seepage into arbitrary shape tunnel considering grouting ring

对于水下隧道目前多采取"堵水限排"的处理方法,通过注浆和设置排水衬砌来减小隧道渗水量和降低衬砌所承受的水压。为了适应各种工程建设的需要,非圆形的隧道在工程实际中很常见,但目前对于考虑注浆圈情况下非圆形隧道的渗流场研究却很少。结合复变函数中的保角变换方法,推导毛洞在注浆圈和衬砌共同作用下水下任意形隧道渗流场的解。并通过FLAC3D本例解相比较,证明了本文的有效性,为实际的工程需要提供了一种快速、准确的方法。

The treatment method of "water blocking and limiting" is adopted in underwater tunnels at present. The water seepage volume of the tunnel and the water pressure of the lining are reduced by grouting and the drainage lining. In order to meet the needs of various engineering constructions, non-circular tunnels are very common in engineering practice. But at present, there are few studies on seepage into non-circular tunnels considering the case of grouting. In this paper, combined with the conformal mapping method, the solution of the seepage into the arbitrary-shape underwater tunnel with the grouting ring and the lining was presented. The comparison with FLAC3D validates the proposed approach which provides a fast and accurate method for engineering requirements.