Underground large-scale cave depot project sphere-cylinder combination excavation method

A combination and engineering technology, which is applied in underground chambers, earth cube drilling, mining equipment, etc., can solve the problems of prolonged construction period, excessive accumulation of muck, labor and time-consuming, etc., and achieve project schedule guarantee, good molding, and cost saving Effect

Inactive Publication Date: 2014-04-16
CHINA RAILWAY NO 3 GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 1) The excavation height of the spherical crown-shaped tank cap is 7m, and the one-time excavation height is too large. During the excavation process, a scaffolding construction platform needs to be erected, which is labor-intensive and time-consuming. Net installation and sprayed concrete construction; straight strip excavation from the middle passage to both sides, because the excavation line of the tank roof is a curve, the curvature is always changing, and it is difficult to control the excavation l

Method used

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  • Underground large-scale cave depot project sphere-cylinder combination excavation method
  • Underground large-scale cave depot project sphere-cylinder combination excavation method
  • Underground large-scale cave depot project sphere-cylinder combination excavation method

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Embodiment

[0031] Embodiment: 1, the present situation of underground large-scale cavern construction.

[0032] The project is 6 underground 10000m 3 For the oil storage tank, there are two upper and lower passages in the tank chamber. The cross-sections of the passages are both horseshoe-shaped. The cross-section of the upper passage is 2.8m×4.36m, and the cross-section of the lower passage is 4.0m×3.86m. The grade of the surrounding rock of the tank chamber and the channel is grade II micro-weathered granite gneiss. The total excavation height of the tank chamber of the cavern is 23.463 m. The tank cap of the tank chamber is a spherical crown with a radius of 29.7 m. The diameter of the lower opening of the spherical crown is 32.6 m and the height of the slope is 4.873 m. The tank body is a cylinder with a height of 18.59 m and a diameter of 31 m. A ring beam with a width of 0.8 m and a height of 1.344 m is embedded in the bedrock 0.8 m around.

[0033] Since the combination of sphe...

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Abstract

The invention belongs to the technical field of large-scale cave depot project sphere-cylinder combination excavation, particularly relates to an underground large-scale cave depot project sphere-cylinder combination excavation method, and solves the problems about excavation and muck removal of an underground large-scale cave depot sphere-cylinder combination. The method includes the steps: (1) for passage excavation, excavating an upper passage and a lower passage, and excavating a spherical-crown-shaped loading space in the lower part of a tank chamber; (2) for tank cap excavation, excavating downwards from the center of a tank cap to form a shaft to have the tank chamber vertically communicated, directly pushing muck into the shaft, raking the muck in a matched manner, and conveying the muck to a muck disposal area with a dumper from the lower passage, wherein tank cap excavation is carried out in upper and lower parts; (3) for tank body excavation, adopting a down-hole drill to excavate inner rock mass in the middle of a tank body by a method for excavating from the center to the periphery radially step by step, and adopting an air driving drilling machine to excavate the edge of the tank body. All processes are linked orderly, equilibrium in production is realized, multi-process synchronous construction and parallel operation can be carried out, and time limit for a project is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of excavating a ball-column combination for large-scale cavern engineering, and in particular relates to an excavation method for a ball-column combination for underground large-scale cavern engineering. Background technique [0002] For the excavation construction of the ball-column combination in the large-scale cavern project, the method currently adopted is: the tank cap is excavated from the middle passage to the straight strips on both sides at full height, and the tank body is excavated step by step. The disadvantages of this method are: [0003] 1) The excavation height of the spherical crown-shaped tank cap is 7m, and the one-time excavation height is too large. During the excavation process, a scaffolding construction platform needs to be erected, which is labor-intensive and time-consuming. Net installation and sprayed concrete construction; straight strip excavation from the middle passage to bo...

Claims

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Application Information

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IPC IPC(8): E21D13/02
Inventor 梁志民
Owner CHINA RAILWAY NO 3 GRP CO LTD
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