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Blasting Demolition of 110 m Cooling Tower in Complex Environment
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Shun-xiang XU1a, Sai-ge WU1a, Peng LUO1b, 2, wei WANG2, 3, De-zhi CHEN2, 3, Guang-bo XIE1a
Blasting | 2023, 40(3) : 129 - 133
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Blasting | 2023, 40(3): 129-133
• EXPLOSIVE DEMOLITION •
Blasting Demolition of 110 m Cooling Tower in Complex Environment
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Shun-xiang XU1a, Sai-ge WU1a, Peng LUO1b, 2, wei WANG2, 3, De-zhi CHEN2, 3, Guang-bo XIE1a
Affiliations
  • 1a.School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
  • 1b.College of Science, Wuhan University of Science and Technology, Wuhan 430081, China
  • 2.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China
  • 3.Wuhan Explosion and Blasting Co., Ltd., Wuhan 430056, China
Published: 2023-09-01 doi: 10.3963/j.issn.1001-487X.2023.03.018
Outline
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A 110 m thin wall reinforced concrete cooling tower has been demolished by controlled blasting. Aiming at the characteristics of large height, thin wall and large bottom diameter of the cooling tower, the blasting scheme of “opening window, breaking steel bar and reserving supporting plate” was adopted. In the pre-demolition process, two simplified directional windows were set up along the edge of the blasting zone by optimizing the blasting incision of the cooling tower. In the blasting area, only the bottom and top of the herringbone column of the cooling tower were blasted, and the blasting incision was divided into 5 blasting areas using the non-electric millisecond delay initiation technology. In order to control the damage effect of blasting, laying buffer soil layer and steel plate in the collapse direction of the cooling tower for double protection effectively reduced the collapse touch vibration. The protective measures combined with mesh and geogrid covering at the blasting incision effectively controlled the flying stones without causing damage to the surrounding structures. The blasting effect shows that setting two simplified directional windows on the edge of the blasting incision not only cuts down the drilling and related workload, reduces the safety hazard and the difficulty of protection, but also improves the structural stability of the pre-treatment part and prevents the blasting incision from falling. Through the simplified design of the directional window, the cooling tower distorts and disintegrates fully in the collapse process, with a concentrated explosion pile and small ground vibration.

cooling tower  /  blasting demolition  /  directional blasting
Shun-xiang XU, Sai-ge WU, Peng LUO, wei WANG, De-zhi CHEN, Guang-bo XIE. Blasting Demolition of 110 m Cooling Tower in Complex Environment[J]. Blasting, 2023 , 40 (3) : 129 -133 . DOI: 10.3963/j.issn.1001-487X.2023.03.018
Funding
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  • Key Project of Hubei Natural Science Fund(创新群体2020CFA043)
  • Hubei Provincial Key R&D Plan Project(2020BCA084)
Appendix
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Year 2023 volume 40 Issue 3
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83
38
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Article Info
doi: 10.3963/j.issn.1001-487X.2023.03.018
  • Receive Date：2022-10-04
  • Online Date：2026-03-20
  • Published：2023-09-01
Article Data
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History
  • Received：2022-10-04
Funding
Key Project of Hubei Natural Science Fund(创新群体2020CFA043)
Hubei Provincial Key R&D Plan Project(2020BCA084)
Affiliations
    1a.School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
    1b.College of Science, Wuhan University of Science and Technology, Wuhan 430081, China
    2.State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China
    3.Wuhan Explosion and Blasting Co., Ltd., Wuhan 430056, China

Corresponding:

CHEN De-zhi (1970-), male, Ph. D, senior engineer, mainly engaged in blasting engineering and blasting technology research and development, (E-Mail) .
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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