Title:
STAGED VENTILATION METHOD BASED ON CONSTRUCTION OF COMPLEX CAVERN GROUP
Document Type and Number:
WIPO Patent Application WO/2021/196707
Kind Code:
A1
Abstract:
A staged ventilation method based on the construction of a complex cavern group, comprising the following steps: perform press-in ventilation while digging in inclined shaft channels, and air supply stopping points reach the entrance of a third sub-channel (6) and the exit of a fourth sub-channel (7); S2: the air supply stopping points reach the entrance of a second sub-channel (5), the exit of a seventh sub-channel (10), and the exit of a triple arch section (2) close to the fourth sub-channel (7); S3: the air supply stopping point of the ath inclined shaft channel (11) directly reaches a tunnel section (1) at a corresponding end, and further reaches the triple arch section (2) and the tunnel section (1) at the corresponding end through the second sub-channel (5) and a sixth sub-channel (9), and the air supply stopping point of the bth inclined shaft channel (12) reaches the tunnel section (1) at a corresponding end and the triple arch section (2) through the seventh sub-channel (10) and the fourth sub-channel (7); S4: form a tunnel-type full-air-pressure ventilation system of a main through air flow tunnel; S5: continue to perform full-air-pressure ventilation while digging; and S6: combine the full-air-pressure ventilation while digging and exhaust ventilation while digging. The method has the advantages of ensuring a construction period, improving construction quality and construction safety, satisfying the ventilation requirement of construction work in all stages, and saving energy and reducing consumption.
Inventors:
CHEN BIN (CN)
ZHOU HAO (CN)
TAN GUANGZONG (CN)
LIU ZHENWU (CN)
NI PAI (CN)
ZHOU HAO (CN)
TAN GUANGZONG (CN)
LIU ZHENWU (CN)
NI PAI (CN)
Application Number:
PCT/CN2020/134536
Publication Date:
October 07, 2021
Filing Date:
December 08, 2020
Export Citation:
Assignee:
CHINA RAILWAY NO 5 ENG GROUP (CN)
CHINA RAILWAY WUJU GROUP NO 4 ENG CO LTD (CN)
CHINA RAILWAY WUJU GROUP NO 4 ENG CO LTD (CN)
International Classes:
E21D9/14; E21F1/00
Foreign References:
| CN111365056A | 2020-07-03 | |||
| CN104314600A | 2015-01-28 | |||
| CN209115139U | 2019-07-16 | |||
| CN205101265U | 2016-03-23 | |||
| RU2685004C1 | 2019-04-16 | |||
| JP2006348696A | 2006-12-28 | |||
| RU2653206C1 | 2018-05-07 |
Other References:
CHEN BIN: "Mining Excavation Technology for Super-large Cross-section Transition Section of Badaling Great Wall Station", TUNNEL CONSTRUCTION, vol. 38, no. Sup. 2, 31 December 2018 (2018-12-31), pages 261 - 267, XP055856892, ISSN: 2096-4498
Attorney, Agent or Firm:
CHANGSHA ZONEYOUNG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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