Excavation and construction method of underground cavity ball coronary dome
A construction method and underground cavern technology, which is applied in underground caverns, earthwork drilling, wellbore lining, etc., can solve the problems of lack of engineering precedents, and achieve the effects of convenient and accurate work, high construction efficiency, and increased construction space
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[0022] Such as Figure 1-3 As shown, an underground cavern spherical coronal dome with a lateral span of 27.5m and a height of 8.3m is taken as an example to introduce the excavation construction method of the underground cavern spherical coronal dome provided by the present invention, with a width of 3.9m and a height of The 4.3m channel is connected to it. The surrounding rock has developed joints and contains faults. The faults are rich in groundwater. The integrity of the surrounding rock is poor and construction risks are high. In order to solve the problem of the excavation and construction of the spherical crown dome under poor geological conditions, the excavation construction method provided by the present invention is adopted.
[0023] (1) The construction of passage 4 provides passages for construction personnel, materials, and machinery.
[0024] (2) Excavation and construction of dome Ⅰ part 1 with plain shotcrete as the initial support, the geological conditions of t...
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