Machine for constructing grouting gravel piles in tunnel and constructing method

A technology of construction machinery and construction methods, which is applied in drilling equipment and methods, sheet pile walls, earthwork drilling and mining, etc., can solve the problems of large workload in construction space, solve the difficulties of one-time drilling and pile formation, overcome the Height limit and insufficient space, the effect of improving shear resistance

Pending Publication Date: 2020-02-21
CHONGQING UNIV +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limited space in the tunnel, it is necessary to carry out repeated entry and construction of various machines, which puts great demands on the construction space and the workload is relatively large.

Method used

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  • Machine for constructing grouting gravel piles in tunnel and constructing method
  • Machine for constructing grouting gravel piles in tunnel and constructing method
  • Machine for constructing grouting gravel piles in tunnel and constructing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment discloses a construction machine for slurry-solidified gravel piles in tunnels, including a drilling system, a grouting system, a travel control room 1 and a crawler belt system 2 .

[0034] see figure 1 , the drilling system, the grouting system and the walking control room 1 are all set on the crawler system 2 .

[0035] The drilling system includes a winch 3 , a main engine 4 , a construction frame 5 , a drilling rod 6 and a motor system 7 .

[0036] see figure 2 Or 3, the winch 3 is connected to the construction frame 5, and the drill pipe 6 is connected to the construction frame 5. The construction frame 5 includes an inclined sliding slot 501 , a hydraulic motor 504 is connected to the upper end of the sliding slot 501 , and a transmission chain is wound between the output end of the hydraulic motor 504 and the lower end of the sliding slot 501 .

[0037] A sliding block 503 is arranged on the transmission chain, and the sliding block 503 is in...

Embodiment 2

[0048] This embodiment discloses a construction method based on the construction machinery of slurry-solidified gravel piles in tunnels described in Embodiment 1, see Figure 4 , including the following steps:

[0049] 1) Construction positioning: the construction machine advances to the designed position, opens each of the corner supports 14, supports them to the ground, performs lofting at the designed position, and reviews and positions them.

[0050]2) Drilling construction: after the review is correct, use the drill rod 6 to carry out mechanical drilling. When drilling, drill in slow gear to ensure that the inclination angle of the drilling hole remains unchanged, and the maximum deviation does not exceed 1%.

[0051] 3) Connection construction: when the construction of the drill pipe of the Nth section is completed, the drill pipe 6 described in the N+1 section is connected with the drill pipe 6 of the Nth section with male and female buckles, and the thin-walled casing...

Embodiment 3

[0056] This embodiment discloses a construction machine for slurry-solidified gravel piles in tunnels, including a drilling system, a grouting system, a travel control room 1 and a crawler belt system 2 .

[0057] The drilling system, the grouting system and the walking control room 1 are all arranged on the crawler belt system 2 .

[0058] The drilling system includes a winch 3 , a main engine 4 , a construction frame 5 , a drilling rod 6 and a motor system 7 . The winch 3 is connected with a construction frame 5, on which a drill pipe 6 is connected. see figure 2 , the outer surface of the drill pipe 6 is provided with a thin-walled steel casing 8 .

[0059] see figure 1 , the grouting system includes a grouting pressure system 9 , a delivery hose 10 and a grout storage system 11 . The grout storage system 11 is connected to the grouting pressure system 9 . The grouting pressure system 9 is connected with a delivery hose 10 .

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Abstract

The invention discloses a machine for constructing grouting gravel piles in a tunnel and a constructing method. The machine for constructing the grouting gravel piles in the tunnel comprises a drilling system, a grouting system, a walking control room and a crawler system. The drilling system comprises a winch, a host, a constructing machine frame, a drill stem and a motor system. The winch is connected with the constructing machine frame. The drill stem is connected with the constructing machine frame. A thin-walled steel sleeve is arranged on the outer surface of the drill stem. The groutingsystem comprises a grouting pressure system, a conveying hose and a grout storing system. The operation method of the constructing machine includes the steps of constructing positioning, drilling constructing, connecting constructing, gravel putting-in, grouting constructing and machine moving. The machine for constructing the grouting gravel piles in the tunnel integrates a drilling constructingmachine and a grouting machine, overcomes the difficulties of height limit and space deficiency in the tunnel, solves the problem of once drilling and pile-forming difficulties in the prior art, meanwhile avoids the problem of the high hole collapsing probability in the oblique file-forming process, and further improves the shear capacity of the grouting gravel piles.

Description

technical field [0001] The invention relates to the field of civil construction engineering, in particular to a construction machine and a construction method for slurry-solidified gravel piles in tunnels. Background technique [0002] Pile foundations are widely used in projects such as bridges, tunnels and roads. At present, sand piles, gravel piles and other bulk material piles are one of the most common pile foundation forms. Due to its relatively low vertical bearing capacity, there are many ways to increase its stiffness. Among them, grouting and curing gravel piles is an effective measure, and the solidified piles are grouted gravel piles. [0003] The construction of slurry-consolidated gravel piles in tunnels is often limited by the height of the tunnel itself. Existing conventional drilling frame drilling is generally a one-time drilling, and there is a height requirement for the height occupied by the frame itself. And if the grouted gravel pile in the tunnel i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/02E21B7/04E21B7/20E02D5/34
CPCE02D5/34E02D2250/0023E21B7/02E21B7/04E21B7/20
Inventor 马新民刘赪刘俊平刘汉龙孔宪斌魏绍刚谢君泰刘韫鑫杨长青于介白明禄孔纲强王成龙
Owner CHONGQING UNIV
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