Groove-pipe combined exhaust technology for joint grouting for normal concrete arch dam

A technology of concrete arches and grouting grooves, applied in new technical fields, can solve problems such as blocked irrigation areas, blockage of exhaust systems, and affecting the quality of joint grouting

Active Publication Date: 2012-09-19
POWERCHINA XIBEI ENG
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  • Claims
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Problems solved by technology

[0003] At present, there are many designs and construction techniques for the joint grouting exhaust system of normal concrete arch dams in water conservancy and hydropower projects. Gas and tee pipes, etc., due to the easy-flowing characteristics of the concrete itself and the disturbance of construction vi

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  • Groove-pipe combined exhaust technology for joint grouting for normal concrete arch dam
  • Groove-pipe combined exhaust technology for joint grouting for normal concrete arch dam
  • Groove-pipe combined exhaust technology for joint grouting for normal concrete arch dam

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Embodiment Construction

[0020] The structures not described in detail in the embodiments are the same as the existing known structures.

[0021] Such as figure 1 , figure 2 Shown: The joint grouting of the normal concrete arch dam and the combination of groove and pipe exhaust technology The groove and pipe combined exhaust system consists of exhaust groove 1, exhaust main pipe 2, exhaust hole 3, hole sealing kraft paper 4, and exhaust pipe 6 , Sealing tank composed of 5 galvanized iron sheets. The grooved pipe combined with the exhaust system is to form a triangular exhaust groove 1 on the top of the irrigation area on the side of the first poured block 10 when the concrete is poured first, and the exhaust main pipe 2 is made with vent holes 3 and sealed with kraft paper 4. After the hole is installed in the exhaust groove 1, the two ends of the exhaust main pipe 2 are connected to the exhaust pipe 6 through the elbow 8, and the groove-sealing galvanized iron sheet 5 is installed to seal the outl...

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Abstract

The invention discloses a groove-pipe combined exhaust technology for joint grouting for a normal concrete arch dam. An exhaust system adopted in the technology comprises a triangular exhaust groove, an exhaust main pipe, exhaust holes, hole sealing kraft paper, exhaust pipes and groove sealing galvanized sheet iron. The implementation process mainly comprises the steps as follows: forming the triangular exhaust groove on the side surface of a concrete pre-cast block; punching holes on the exhaust main pipe at equal intervals in a stagger manner; sealing the holes with the hole sealing kraft paper; mounting the exhaust main pipe before casting a post-cast block; connecting the exhaust main pipe with the exhaust pipes through elbows; and sealing the mouth of the exhaust groove with the galvanized sheet iron after the exhaust pipes are mounted, so as to form the pipe-groove combined exhaust system. The invention has the advantages as follows: the construction is simple, convenient and practicable and has higher reliability; and compared with other exhaust technologies, the groove-pipe combined exhaust technology can effectively prevent blockage of an exhaust pipeline system in the joint grouting arrangement of the arch dam in the concrete casting process.

Description

technical field [0001] The invention relates to a normal concrete arch dam joint grouting exhaust technology in water conservancy and hydropower projects—the exhaust technology combined with grooves and pipes. Novel technology for clogging. Background technique [0002] According to the requirements of temperature control and anti-cracking and concrete construction strength, concrete arch dams must be equipped with transverse joints, and those with large thickness must be equipped with longitudinal joints. To ensure the safe operation of the dam and the power station, the joint grouting system of each joint of the arch dam consists of an inlet and return grout system and an exhaust system. [0003] At present, there are many designs and construction techniques for the joint grouting exhaust system of normal concrete arch dams in water conservancy and hydropower projects. Gas and tee pipes, etc., due to the easy-flowing characteristics of the concrete itself and the disturb...

Claims

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Application Information

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IPC IPC(8): E02D15/00E02B3/16
Inventor 程俊在陈永福姚栓喜蔡云鹏李蒲健白兴平石立刘莉
Owner POWERCHINA XIBEI ENG
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