Simulation jacking tube for model test
A model test and pipe jacking technology, applied in soil material testing, material inspection products, etc., can solve the problems of no simultaneous research, no simulation of pipe jacking production method, description of operation method, etc., to achieve simple structure, convenient operation, and prevention of outflow. Effect
Inactive Publication Date: 2014-08-20
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology
Neither of these two patents simultaneously studied the effects of formation loss and grouting drag reduction on pipe jacking construction, and did not describe the fabrication method and operation mode of simulated pipe jacking in model tests
It can be seen that there is currently no simulated pipe jacking that can be used to simulate the formation deformation caused by pipe jacking construction and the model test of grouting drag reduction effect.
Method used
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Embodiment 1
[0036] The present invention will be described in further detail below according to accompanying drawing:
[0037] Such as figure 1 , figure 2 , image 3 As shown, a simulated pipe jacking for model test consists of A-type steel pipe 1, B-type steel pipe 2, horizontal loading plate 3, pipe jacking support frame 4, first O-ring 6, second O-ring 7. Reaction frame support 8, ground anchor 9, jack 10, jack pressure sensor 11, mud delivery pipe 12, mud pressure sensor 13, grouting pump 14, mud bucket 15, etc. It is characterized in that: the left end of A-type steel pipe 1 and the right end of B-type steel pipe 2 are welded together, and the central axis of A-type steel pipe 1 and B-type steel pipe 2 coincide; Circular hole, B-type steel pipe 2 passes through the circular hole on the left side wall of the model test box, and keeps the A-type steel pipe 1 and B-type steel pipe 2 horizontal; seal the first O-shaped sealing ring 6 and the second O-shaped The circle 7 is respectiv...
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Abstract
The invention discloses a simulation jacking tube for model tests. The left end of an A-type steel tube is welded with the right end of a B-type steel tube; a central axis of the A-type steel tube is overlapped with a central axis of the B-type steel tube; the A-type steel tube penetrates through a round hole in a right side wall of a model testing box; the B-type steel tube 2 penetrates through a round hole in a left side wall of the model testing box; the A-type steel tube and the B-type steel tube are kept horizontal; O-shaped sealing rings are respectively embedded into preserved round hole grooves in the right side wall and the left side wall of the model testing box; a horizontal loading plate is welded to the left end of the B-type steel tube; a counter-force rack is mounted at the left end of the B-type steel tube; a jack is welded on the counter-force rack and props against the horizontal loading plate; a gap of the B-type steel tube and a soil body is filled with slurry; the slurry filling pressure is tested by using a pressure sensor. The simulation jacking tube is reasonable and simple in structure and convenient to operate, and can be applied to model tests on ground deformation caused by pipe-jacking excavation, and then the jacking and slurry filling process of the jacking tube in practical construction situation can be simulated.
Description
technical field [0001] The invention relates to the technical field of rock and soil mechanics tests, and more particularly relates to a simulated pipe jacking used for model tests, which is suitable for pipe jacking construction model tests simulating site conditions. Background technique [0002] The pipe jacking construction technology is a non-excavation underground pipeline laying construction technology that uses hydraulic pressure as the power to jack the pipe jacking machine and the pipe joints to be laid underground one by one until the pipe jacking receiving well. It has the following advantages: high construction precision, wide application of soil quality, wide range of applicable pipe diameters, low construction cost, and small impact on the surrounding environment. With the acceleration of urbanization in my country, pipe jacking technology is widely used in urban water supply and drainage, gas, electric power, communication and other underground pipe networks,...
Claims
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Login to View More IPC IPC(8): G01N33/24
Inventor 陈善雄程刘勇许锡昌王星运
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI