Layout structure and construction method of pressure pipes and drainage corridors suitable for tbm construction
A technology of drainage corridors and pressure pipes, applied in water conservancy projects, hydroelectric power generation, hydroelectric power stations, etc., can solve the problems of weakened external water effect and difficulty in forming a closed drainage area, so as to reduce project investment and construction difficulty, and improve the efficiency of transportation. Simple way, increase the effect of adding ring spacing
Active Publication Date: 2022-03-18
POWERCHINA HUADONG ENG COPORATION LTD
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Problems solved by technology
In this design, there are deep drainage holes on only one side above the flat holes in the pressure pipes on both sides, making it difficult to form a closed drainage area, and the effect of reducing external water is weakened
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[0035] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the preferred embodiments of the present invention will be described below in conjunction with specific examples, but it should be understood that the accompanying drawings are for illustrative purposes only, and cannot be interpreted as an explanation of this patent. Restrictions; In order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, some known structures and their descriptions in the drawings may Omissions are understandable. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.
[0036] Such as figure 1 As shown, an arrangement structure of pressure pipes and drainage corridors suitable for TBM construction includes cons...
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The invention discloses a layout structure and a construction method of pressure pipes and drainage corridors suitable for TBM construction, including construction branch holes for constructing flat holes in a plurality of parallel pressure pipes, and excavating drainage holes on the construction branch holes The starting point of the corridor is set as point a, and the excavation at point a forms the first drainage corridor and the second drainage corridor connected in sequence, and the drainage corridor between the first drainage corridor and the second drainage corridor The inflection point of the connection is set as point b, and the end of the second section of drainage corridor is set as point c; the end of the second section of drainage gallery is connected with a serpentine drainage gallery arranged above the flat hole in the pressure pipe. The tail end of the serpentine drainage corridor is set as point d; the tail end of the serpentine drainage corridor is connected with the point b of the first drainage corridor through the seventh drainage corridor. The invention has a simple structure, and has the advantage of rationally arranging the layout of drainage corridor chambers according to the construction characteristics of TBM machinery, arranging the entry and transition of construction machinery, and avoiding problems such as construction obstruction.
Description
technical field [0001] The invention belongs to the technical field of water conservancy and hydropower engineering, and in particular relates to an arrangement structure and a construction method of pressure pipes and drainage corridors suitable for TBM construction. Background technique [0002] Steel plate lining is generally used in the design of hydropower station pressure pipelines. It is well known that steel plate lining has many advantages such as high strength, good internal water resistance, and good seepage resistance, but it also has an Achilles heel against external water pressure difference. In response to this weakness, drainage corridors will be set up around the high-pressure pipelines, the purpose of which is to reduce the groundwater level near the high-pressure pipelines. The excavation section of the drainage corridor is generally very small, and it is very difficult to use the drill and blast method for construction, and it is difficult to guarantee th...
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IPC IPC(8): E02B9/06
CPCE02B9/06Y02E10/20
Inventor 吴都田钊李志雨张圣章梦捷
Owner POWERCHINA HUADONG ENG COPORATION LTD