Ventilation-cooling method for high-geothermal deeply-buried diversion tunnel construction

Abstract

The invention provides a ventilation-cooling method for high-geothermal deeply-buried diversion tunnel construction. The ventilation-cooling method comprises the following steps: I, carrying out health management of people; II, ventilation-cooling; III, cooling blast holes; IV, making ice to cool; and V, cooling measurement equipment. According to the ventilation-cooling method, a ventilation technology and a low-temperature cold water technology are integrated so as to construct in high temperature environment, so that the heatstroke symptoms of constructors in high temperature environment are reduced; the wearing of mechanical parts caused by engine oil temperature increase, viscosity drop and lubrication effect reduction of a construction machine is prevented; pipe burst, oil leakage of a joint and solenoid valve coil burning caused by high temperature are prevented; the accelerated aging of a sealing member is prevented; the emulsion explosive failure in high temperature environment is also prevented and the phenomena of nonel softening and misfire are avoided; the normal use of monitoring equipment in high temperature environment is guaranteed.

Description

technical field [0001] The invention relates to a construction method of a deep-buried diversion tunnel, in particular to a ventilation and cooling method for the construction of a deep-buried diversion tunnel with high ground temperature. Background technique [0002] With the implementation of my country's western development strategy, the infrastructure construction in the western region is changing with each passing day. Due to the needs of water conservancy and transportation construction, it is often necessary to construct deep tunnels. Due to the rich geothermal resources in many areas in the west, high ground temperature may be encountered in the construction of deep tunnels. For example, the maximum temperature of the rock wall in the 3# branch of the diversion tunnel of the Bulunkou-Gonger Hydropower Station in Xinjiang reached 105°C, and the air temperature reached 72°C. The temperature of the rock wall in the high ground temperature phenomenon is as high as 110°...

AI Technical Summary

Problems solved by technology

For example, the maximum temperature of the rock wall in the 3# branch of the diversion tunnel of the Bulunkou-Gonger Hydropower Station in Xinjiang reached 105°C, and the air temperature reached 72°C. The temperature of the rock wall in the high ground temperature phenomenon is as high as 110°C, the surrounding rock fracture zone is accompanied by high-pressure steam ejection, the gas temperature reaches 160°C-170°C, and the air temperature is as high as 70°C. At present, the construction technology of high ground temperature tunnels is a difficult point. Research in this area is relatively rare