Series mold bag retrusive type subsection slip casting device and slip casting method

A segmented grouting and retreating technology, which is applied in the fields of soil protection, construction, and infrastructure engineering, etc., can solve the problems of small reinforcement range, poor effect, and inability to directly segmental grouting, so as to ensure the grouting effect Effect

Inactive Publication Date: 2017-05-17
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the commonly used methods of segmental grouting are: (1) Sleeve valve grouting, the process is complicated, the operation is troublesome, and the casing material of the sleeve valve sleeve cannot be constructed when the hole is at an elevation angle; (2) Mold bag grouting, the current The mold bag grouting process has a certain effect in the segmental grouting, but it can only form a layer of shielding wall, the reinforcement range is small, and the reinforcement strength is low. A single mold bag is firm and the grouting pipe can be squeezed and reinforced for the ground , The effect of controlling the spread of grout is poor, and it is impossible to directly inject grout in sections

Method used

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  • Series mold bag retrusive type subsection slip casting device and slip casting method
  • Series mold bag retrusive type subsection slip casting device and slip casting method
  • Series mold bag retrusive type subsection slip casting device and slip casting method

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] The device disclosed by the present invention includes a series of film bag retreat segmental grouting devices, which include a galvanized steel casing, and a plurality of mold bag grouting steel pipes of different lengths are arranged on the outer ring of the galvanized steel casing. The axis of the bag grouted steel pipe is parallel to the axis of the galvanized steel casing, and the end of each mold bag grouted steel pipe corresponds to a mold bag, and the end of each mold bag grouted steel pipe extends into the corresponding mold bag , realize the stretching of the mold bag, the stratum is squeezed during the mold bag stretching process, and a protective shell is formed; at the same time, the middle and lower mold bags are prevented from being too large on the ground surface during the stretching process; a plurality of the mold bags are set i...

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Abstract

The invention relates to a series mold bag retrusive type subsection slip casting device and slip casting method. The series mold bag retrusive type subsection slip casting device comprises a series mold bag device, a retrusive type slip casting pipe and the like; the series mold bag device is composed of three different-length mold bag slip casting steel pipes outside galvanized steel sleeves, an upper mold bag, a middle mold bag and a lower mold bag; slurry outlet holes are distributed in non-mold-bag zones of the galvanized steel sleeves, the mold bag slip casting steel pipes are bundled to the galvanized steel sleeves through iron wires, each slip casting steel pipe corresponds to one corresponding mold bag, the mold bags include the upper mold bag, the middle mold bag and the lower mold bag, and the mold bags are bundled to the galvanized steel sleeves through iron wires; and the retrusive type slip casting pipe is composed of a slip casting pipe, a slurry stopping plug and the like. The invention further discloses a using method of the device. According to the characteristics of retrusive type subsection slip casting, after the mold bags are supported through slip casting, a stratum is naturally divided into three slip casting sections, and conditions are provided for retrusive type subsection slip casting slurry diffusion; and meanwhile, the stratum is extruded in the mold bag supporting process, and subsection slip casting is facilitated.

Description

technical field [0001] The invention relates to the field of grouting, in particular to a device and method for segmented grouting of a series of retreating mold bags. Background technique [0002] Grouting has always been an effective method to deal with bad geology, and has achieved good treatment effects. At present, the commonly used methods of segmental grouting are: (1) Sleeve valve grouting, the process is complicated, the operation is troublesome, and the casing material of the sleeve valve sleeve cannot be constructed when the hole is at an elevation angle; (2) Mold bag grouting, the current The mold bag grouting process has a certain effect in the segmental grouting, but it can only form a layer of shielding wall, the reinforcement range is small, and the reinforcement strength is low. A single mold bag is firm and the grouting pipe can be squeezed and reinforced for the ground , control of grout diffusion, etc. are poor, and direct segmental grouting cannot be pe...

Claims

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Application Information

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IPC IPC(8): E02D3/12
CPCE02D3/12E02D2250/003
Inventor 刘人太王洪波张庆松李术才张乐文朱光轩姜鹏
Owner SHANDONG UNIV
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