4Birger Jansson. Water and sewage in caverns and tunnels: thirty years experience in sweden. Underground space[J] , vol.4. No. 1.Pp47 - 51,1989.
5Lr.a.m.meskets, the dokhaven: an underground plant for sewage treatment in rotterdam, Underground space[J], vol.8 no. 1 1984 ,p18 - 23.
6F. medbo and f. loser. Subsurface location of a major water pollution control plant presently under construction in the oalo area. Norwegian hard rock tunneling[J]. Norwegian soil and reek engineering assoeiaton. Publication no. 1.55 - 60.
7Gsaetersmoen,consulting cngincer,Undergroud water treatment plant and reaervoirs in solo.Norwegian hard rock tunneling[J].Norwegian soil and rock engineering associaton,Publication no.1.81-82.
8K.garshol. Excavation, support and pre- grouting of tbm - driven sewer tunnel. Norweging tunelling technology[J]. Norwegian soil and rock engineering association. Publication No.2.21 - 28.
9K. garshol.Underground excavation and support of a major sewage.treatment plant for the aslo area.Norweging tunnelling technology [J].Norwegian soil rock engineering association.Publication No.2.45-49.
10Gunnar asting,consulting cngincer,Expericnces with pregrouting in sewage tunnels in the oslo area.Norweging tunnelling technology [J].Norwegian soil and rock engineering association Publication No.2.57-64.
