In order to meet the construction requirement for the
shaft of the Gaoligong mountains, comprehensive tunnel environment and well
capacity requirements, in accordance with the shaft well, wellbore, the
underground three aspects as a whole to consider the overall design train of
thought, puts forward solutions to key problems in the design of railway tunnel
shaft:（1）according to the wellhead conditions of
landform and physiognomy and lifting equipment, wellhead yard layout,
reasonable arrangement of well field flat;（2）According to the vertical shaft function positioning, the vertical
shaft should adopt the main and auxiliary shaft mode;（3）Comprehensively consider the cross section size of the shaft
according to the amount of slag, quantity of materials and quantity of
personnel in and out of the underground construction;（4）When geological and hydrogeological conditions permit, the mixed
operation method of shortsection excavation and laying
of the shaft is suitable for construction, and a single layer of molded
concrete lining is set;（5）The
hoisting equipment of vertical shaft should be considered according to the
requirements during downhole construction, and the capabilities of each
equipment should be matched during well construction;（6）The construction capacity of the shaft shall meet the requirements
of slags and feedstock during underground construction and leave a surplus；（7）The vehicle yard at the bottom of the well
shall be determined according to the mode of transportation and functional
requirements such as feeding and slag discharge;（8）The safety of vertical shaft should first solve the problem of
groundwater. The results show that the railway tunnel shaft is feasible
according to the above design methods and ideas. At present, the main shaft of
No.1 shaft in Gaoligongshan Tunnel have been successfully constructed.
LIU Li
,
ZHANG Ping
,
WANG Huanlong
,
YANG Changyu
. Design and Analysis of No.1 Shaft in Gaoligongshan
Tunnel[J]. Tunnel Construction, 2020
, 40(S2)
: 188
-195
.
DOI: 10.3973/j.issn.2096-4498.2020.S2.024
