Inclined shaft feeding and discharging and single transverse channel combined highway tunnel ventilation system and method

Abstract

The invention discloses an inclined shaft feeding and discharging and single transverse channel combined highway tunnel ventilation system and method. According to the key point of the technical scheme, the inclined shaft feeding and discharging and single transverse channel combined highway tunnel ventilation system comprises a right-line tunnel, a left-line tunnel, a right-line ventilation inclined shaft and a left-line ventilation inclined shaft, and the right-line ventilation inclined shaft is opposite to the left-line ventilation inclined shaft. The right-line ventilation inclined shaft comprises a right-line inclined shaft fan room, a right-line main air duct, a right-line bottom connection air supply duct, a right-line bottom connection air exhaust duct and a right-line smoke exhaust duct, one end of the right-line main air duct communicates with the right-line inclined shaft fan room, and the other end of the right-line main air duct correspondingly communicates with the right-line bottom connection air supply duct, the right-line bottom connection air exhaust duct and the right-line smoke exhaust duct. The right-line bottom connection air supply duct and the right-line bottom connection air exhaust duct communicate with the right-line tunnel, the right-line smoke exhaust duct communicates with the left-line tunnel, the left-line ventilation inclined shaft is similar tothe right line ventilation inclined shaft, only one ventilation inclined shaft needs to be arranged in a right-line uphill tunnel, one vertical / inclined shaft, a related connection air duct, a fan room and a ventilation electromechanical facility are reduced, and the investment of vertical / inclined shafts and affiliated civil engineering and electromechanical engineering is reduced.

Description

technical field [0001] The invention relates to the technical field of ventilation for extra-long highway tunnels, in particular to a ventilation system and method for highway tunnels with a combination of inclined shaft conveying and rowing and single transverse passage. Background technique [0002] In the 1990s, a large number of expressway tunnels appeared in our country, and its ventilation mode has undergone a process of evolution from semi-horizontal to longitudinal. In 1990, through the investigation to Japan and the consultation and demonstration of Chinese and foreign experts, the full-jet longitudinal ventilation technology was applied to the downhill tunnel (3103m) of Zhongliang Mountain in Chengdu-Chongqing Expressway for the first time in China. Later, the Tanyugou Tunnel (3470m), Muyucao Tunnel (3610m), and Beibei Tunnel (4025m) adopted longitudinal ventilation. Nearly 30 years of operation have shown that this ventilation method is very successful, and the l...

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Problems solved by technology

[0005] In a highway tunnel with a large longitudinal slope of about 10km in length, when the traffic volume is heavy, due to the influence of operating ventilation wind speed, energy consumption and fire smoke exhaust length, the uphill tunnel often adopts the combined ventilation method of two vertical / inclined shafts , the investment in ventilation civil engineering is large, the configuration of electromechanical system is complicated, and the energy consumption of operation is high

In these tunnels, the vertical / inclined shaft delivery and double-hole complementary ventilation method is adopted, which reduces the number of vertical / inclined shafts and reduces the investment in civil engineering. The ventilation system is complex, the configuration of mechanical and electrical equipment is still large, and the reduction in energy consumption is not obvious

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