Method for treating rock section in pipe jacking construction

A treatment method and technology in construction, which can be applied to earthwork drilling, mining equipment, tunnels, etc., and can solve problems such as increasing construction costs, failure of pipe jacking machines, and encountering rocks

Inactive Publication Date: 2019-04-16
POWERCHINA HUADONG ENG COPORATION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to changes in geological conditions, some rocks may be encountered during the pipe jacking construction process, resulting in the inability of the pipe jacking machine to jack. However, it is difficult to use blasting operations that can be used in the field when operating underground in cities, so it can only be avoided by design. increase construction cost

Method used

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  • Method for treating rock section in pipe jacking construction
  • Method for treating rock section in pipe jacking construction

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Embodiment Construction

[0017] Refer to attached picture. According to the processing construction method of the rock section in the pipe jacking construction of the present invention, when the pipe jacking construction is constructed to the rock section along the design path, the following steps are included:

[0018] (1). Drill peripheral holes: use manual air drill to press figure 1 As shown, peripheral holes 1 are drilled at intervals of about 30 to 50 cm along the pipeline design contour line, so that the excavated part and the reserved part 100 become independent blocks bounded by the peripheral holes 1 to ensure the structural section.

[0019] (2). Drilling hollow holes: use a hand-held core drill to press figure 1 As shown, a hollow hole 2 is drilled at a suitable position in the middle of the excavation surface. The hollow hole 2 is synthesized by drilling holes of a plurality of hand-held core drills. The diameter of the drill hole of the hand-held core drill is Φ150mm. The depth is 1.50...

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Abstract

The invention provides a method for treating a rock section in pipe jacking construction, which comprises the following steps of: (1). drilling a peripheral hole when the pipe jacking construction isconstructed to the rock section along a design path, namely drilling the peripheral hole along a contour line by adopting a hand air drill according to a certain interval; (2). drilling a hollow hole,namely drilling a hollow hole at a proper position in the middle of the excavation surface by adopting a hand-held core drill; (3). drilling split holes, namely drilling a plurality of split holes byadopting a hand air drill and taking the hollow hole as a circle center to the periphery according to a certain interval, wherein the depth of the hollow hole is deeper than that of the split hole; (4). splitting excavation, namely sequentially carrying out splitting excavation from inside to outside by adopting a hydraulic splitter. The method fully considers the operability, the safety, the environmental protection, the accuracy and the like of the construction without exploding which has any influence on urban over ground buildings, can be quickly, efficiently, safely and accurately constructed by adopting the conventional machinery, and provides a new method for treating local rock sections in pipe jacking construction.

Description

technical field [0001] The invention relates to a method for treating rock sections in pipe jacking construction, which is mainly used for treating rock sections in pipe jacking construction of municipal pipe networks. Background technique [0002] Accelerating the construction and transformation of urban sewage treatment facilities, comprehensively strengthening the construction of supporting pipe networks, and solving the problems of poor water environment quality, severely damaged water ecology, and many environmental hazards in some areas of our country are one of the priorities of our work in recent years. In the construction of supporting pipe network, pipe jacking construction is a common process. However, due to changes in geological conditions, some rocks may be encountered during the pipe jacking construction process, resulting in the inability of the pipe jacking machine to jack. However, it is difficult to use blasting operations that can be used in the field whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10
CPCE21D9/10
Inventor 王凤军施雨曾鸣唐留贵喻周吴土林
Owner POWERCHINA HUADONG ENG COPORATION LTD
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