Pipe wall jacking post-grouting system

Abstract

The utility model provides a grouting system after pipe wall jacking, and relates to the technical field of pipe jacking machine construction grouting. The pipe-jacking wall post-grouting system comprises a slurry preparation and storage device, a pumping device, a monitoring device and a control device, the slurry preparation and storage device is used for preparing cement slurry required by grouting, and the pumping device is used for conveying the cement slurry prepared by the slurry preparation and storage device to grouting points behind all pipe-jacking walls for grouting; the monitoring device is used for monitoring the pressure of grout in the grouting points behind the pipe wall in real time, and the control device is used for controlling the pumping device to stop grouting the grouting points behind the pipe wall when the monitoring device monitors that the pressure of the grout in the grouting points behind the pipe wall reaches a preset threshold value. Based on the technical scheme of the utility model, the pipe wall jacking post-grouting system can automatically carry out grouting operation on the pipe wall jacking post-grouting system so as to prevent ground subsidence.

Description

Technical Field

[0001] The utility model relates to the technical field of grouting in pipe jacking machine construction, in particular to a pipe jacking machine wall back grouting system. Background Art

[0002] With the advancement of urbanization, ground resources and developable space are increasingly restricted, and the development of underground space is an inevitable trend. The problems encountered in the process of urban underground construction are becoming more and more complex, crossing busy urban roads, existing railways, various obstacles, etc., and the requirements for the ground environment are becoming increasingly stringent.

[0003] At present, the main tunnel construction methods under existing structures in China are shield method and pipe jacking method. More and more cases of using pipe jacking machine for construction are being carried out. This method is very important for controlling ground settlement, especially when crossing important railways, highways and important buildings. If the ground settlement is too large, it is easy to cause ground or building collapse and casualties. The settlement control measures can be divided into two stages: during the jacking process and after the jacking is completed. During the jacking process, the settlement is reduced by controlling the over-excavation amount, jacking speed and slag discharge amount. After the jacking is completed, the grouting is backfilled behind the jacking wall to prevent ground settlement. In the existing backfill grouting operation, it is usually necessary to manually pour the prepared cement slurry into the jacking wall and then perform grouting operations on the jacking wall, which is inconvenient to operate. Therefore, it is necessary to design a grouting system behind the jacking wall that can automatically perform grouting operations on the jacking wall. Utility Model Content

[0004] In view of the above problems in the prior art, the present application proposes a grouting system behind the top pipe wall, which can automatically perform grouting operations behind the top pipe wall to prevent ground settlement.

[0005] The utility model provides a grouting system behind the top pipe wall, which comprises a slurry storage device, a pumping device, a monitoring device and a control device. The slurry storage device is used to prepare cement slurry required for grouting, the pumping device is used to transport the cement slurry prepared by the slurry storage device to grouting points behind each top pipe wall for grouting, the monitoring device is used to monitor the pressure of the slurry in the grouting points behind each top pipe wall in real time, and the control device is used to control the pumping device to close grouting to the grouting point behind the top pipe wall when the monitoring device detects that the pressure of the slurry in the grouting point behind the top pipe wall reaches a preset threshold.

[0006] As a further improvement of the above technical solution:

[0007] The above-mentioned grouting system behind the top pipe wall, further, the control device includes an air compressor station and a plurality of pneumatic ball valves, the plurality of pneumatic ball valves are installed on the grouting pipeline of the pumping device, and are used to control the grouting pipeline one by one to grout the grouting points behind each top pipe wall, the air compressor station is used to drive the pneumatic ball valve to close or open, when the monitoring device detects that the pressure of the slurry in the grouting point behind the top pipe wall reaches a preset threshold, the corresponding pneumatic ball valve is closed to control the pumping device to close the grouting to the grouting point behind the top pipe wall.

[0008] The above-mentioned grouting system behind the top pipe wall further has grouting points behind the top pipe wall arranged at even intervals along the extension direction behind the top pipe wall, and the grouting pipeline of the pumping device is connected to each grouting point behind the top pipe wall in a one-to-one correspondence.

[0009] The above-mentioned top pipe wall rear grouting system, further, the slurry making and storage device includes a water supply mechanism, a mixing silo and a stirring silo, the water supply mechanism is used to supply water to the mixing silo, the mixing silo is used to mix cement and water, the mixing silo is equipped with a conveying mechanism, the conveying mechanism is used to convey the mixture of cement and water in the mixing silo to the stirring silo, and the stirring silo is used to stir and store the mixture of cement and water.

[0010] The above-mentioned top pipe wall rear grouting system, further, the water supply mechanism is provided with three water outlet pipes, the three water outlet pipes are respectively installed on the upper side and the lower side of the mixing material silo and the conveying mechanism, the three water outlet pipes respectively supply water to the inner top and the inner bottom of the mixing material silo and the conveying mechanism.

[0011] The above technical features can be combined in various suitable ways or replaced by equivalent technical features as long as the purpose of the utility model can be achieved.

[0012] The utility model provides a grouting system behind the top pipe wall, which has at least the following beneficial effects compared with the prior art: during the top pipe construction, the pumping device transports the cement slurry prepared by the slurry storage device to the grouting points behind each top pipe wall for grouting, and the monitoring device monitors the pressure of the slurry in the grouting points behind each top pipe wall in real time. When the monitoring device detects that the pressure of the slurry in the grouting point behind the top pipe wall reaches a preset threshold, the pumping device is controlled to close the grouting to the grouting point behind the top pipe wall. The grouting system behind the top pipe wall can automatically perform grouting operations behind the top pipe wall to prevent ground subsidence.

[0013] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0016] Figure 1 The schematic diagram of the structure of the pipe top wall back grouting system provided by the embodiment of the utility model is shown;

[0017] Figure 2 The schematic diagram of the structure of the slurry storage device of the top pipe wall rear grouting system provided by the embodiment of the utility model is shown.

[0018] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0019] Description of reference numerals:

[0020] 100- grouting system behind the top pipe wall, 110- slurry preparation and storage device, 111- water supply mechanism, 112- mixing silo, 113- stirring silo, 114- conveying mechanism, 115- water outlet pipe, 120- pumping device, 130- monitoring device, 140- control device, 141- air compressor station, 142- pneumatic ball valve. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] The utility model will be further described below in conjunction with the accompanying drawings.

[0027] The embodiment of the utility model provides a pipe jacking wall rear grouting system 100, which can automatically perform grouting operations on the rear of the pipe jacking wall to prevent ground settlement.

[0028] See also Figure 1 The embodiment of the utility model provides a grouting system 100 behind the top pipe wall, which includes a slurry storage device 110, a pumping device 120, a monitoring device 130 and a control device 140. The slurry storage device 110 is used to prepare cement slurry required for grouting, the pumping device 120 is used to transport the cement slurry prepared by the slurry storage device 110 to each grouting point behind the top pipe wall for grouting, the monitoring device 130 is used to monitor the pressure of the slurry in the grouting point behind the top pipe wall in real time, and the control device 140 is used to control the pumping device 120 to close grouting to the grouting point behind the top pipe wall when the monitoring device 130 detects that the pressure of the slurry in the grouting point behind the top pipe wall reaches a preset threshold.

[0029] During the pipe jacking construction, the pumping device 120 transports the cement slurry prepared by the slurry preparation and storage device 110 to the grouting points behind each pipe jacking wall for grouting, and the monitoring device 130 monitors the pressure of the slurry in the grouting points behind each pipe jacking wall in real time. When the monitoring device 130 detects that the pressure of the slurry in the grouting point behind the pipe jacking wall reaches a preset threshold, the pumping device 120 is controlled to close the grouting to the grouting point behind the pipe jacking wall. The pipe jacking wall back grouting system 100 provided by the embodiment of the utility model can automatically perform grouting operations behind the pipe jacking wall to prevent ground settlement.

[0030] The pipe top wall back grouting system 100 provided in the embodiment of the present utility model, further, please refer to Figure 1 The control device 140 includes an air compressor station 141 and a plurality of pneumatic ball valves 142. The plurality of pneumatic ball valves 142 are installed on the slurry delivery pipeline of the pumping device 120 and are used to control the slurry delivery pipeline to grout the grouting points behind each top pipe wall one by one. The air compressor station 141 is used to drive the pneumatic ball valve 142 to close or open. When the monitoring device 130 detects that the pressure of the slurry in the grouting point behind the top pipe wall reaches a preset threshold, the corresponding pneumatic ball valve 142 is closed to control the pumping device 120 to close the grouting to the grouting point behind the top pipe wall.

[0031] During the pipe jacking construction, the pumping device 120 transports the cement slurry prepared by the slurry preparation and storage device 110 to the grouting points behind each pipe jacking wall for grouting, and the monitoring device 130 monitors the pressure of the slurry in the grouting points behind each pipe jacking wall in real time. When the monitoring device 130 detects that the pressure of the slurry in the grouting point behind the pipe jacking wall reaches a preset threshold, the corresponding pneumatic ball valve 142 is closed to control the pumping device 120 to close the grouting to the grouting point behind the pipe jacking wall. In the case of secondary grouting or emergency, the pneumatic ball valve 142 can be manually driven to open or close.

[0032] The grouting system 100 behind the top pipe wall provided by the embodiment of the utility model further has the grouting points behind the top pipe wall arranged at even intervals along the extension direction behind the top pipe wall, and the grouting pipeline of the pumping device 120 is connected to each grouting point behind the top pipe wall in a one-to-one correspondence. Figure 2 The slurry storage device 110 includes a water supply mechanism 111, a mixing silo 112 and a stirring silo 113. The water supply mechanism 111 is used to supply water to the mixing silo 112. The mixing silo 112 is used to mix cement and water. A conveying mechanism 114 is installed on the mixing silo 112. The conveying mechanism 114 is used to convey the mixture of cement and water in the mixing silo 112 to the stirring silo 113. The stirring silo 113 is used to stir and store the mixture of cement and water.

[0033] When cement slurry needs to be prepared, cement is added to the mixing bin 112, the water supply mechanism 111 supplies water to the mixing bin 112, the mixing bin 112 mixes cement and water, and the conveying mechanism 114 conveys the mixture of cement and water in the mixing bin 112 to the mixing bin 113, which is used to mix and store the mixture of cement and water for use by the pumping device 120. In this embodiment, the water supply mechanism 111 is provided with three water outlet pipes 115, which are respectively installed on the upper side and the lower side of the mixing bin 112 and the conveying mechanism 114, and the three water outlet pipes 115 supply water to the inner top and the inner bottom of the mixing bin 112 and the conveying mechanism 114, respectively. Two of the water outlet pipes 115 supply water to the inner top and inner bottom of the mixing silo 112 respectively, which can speed up the mixing of water and cement. The other water outlet pipe 115 supplies water to the conveying mechanism 114, which can enhance the fluidity of the cement and water mixture conveyed by the conveying mechanism 114 and facilitate the conveying mechanism 114 to convey the cement and water mixture.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0035] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.

Claims

1. A pipe top wall post grouting system, characterized in that: The grouting system behind the top pipe wall includes a slurry preparation and storage device, a pumping device, a monitoring device and a control device. The slurry preparation and storage device is used to prepare the cement slurry required for grouting. The pumping device is used to transport the cement slurry prepared by the slurry preparation and storage device to the grouting points behind each top pipe wall for grouting. The monitoring device is used to monitor the pressure of the slurry in the grouting points behind each top pipe wall in real time. The control device is used to control the pumping device to close the grouting to the grouting point behind the top pipe wall when the monitoring device detects that the pressure of the slurry in the grouting point behind the top pipe wall reaches a preset threshold.

2. The back grouting system for the top pipe wall according to claim 1, characterized in that: The control device includes an air compressor station and multiple pneumatic ball valves. The multiple pneumatic ball valves are installed on the slurry delivery pipeline of the pumping device and are used to control the slurry delivery pipeline to grout into the grouting points behind each top pipe wall one by one. The air compressor station is used to drive the pneumatic ball valve to close or open. When the monitoring device detects that the pressure of the slurry in the grouting point behind the top pipe wall reaches a preset threshold, the corresponding pneumatic ball valve is closed to control the pumping device to close the grouting to the grouting point behind the top pipe wall.

3. The back grouting system for the top pipe wall according to claim 1, characterized in that: The grouting points behind the top pipe wall are evenly spaced along the extension direction behind the top pipe wall, and the grouting pipeline of the pumping device is connected to the grouting points behind each top pipe wall in a one-to-one correspondence.

4. The pipe top wall post grouting system according to claim 1, characterized in that: The slurry making and storage device includes a water supply mechanism, a mixing silo and a stirring silo. The water supply mechanism is used to supply water to the mixing silo. The mixing silo is used to mix cement and water. A conveying mechanism is installed on the mixing silo. The conveying mechanism is used to convey the mixture of cement and water in the mixing silo to the stirring silo. The stirring silo is used to stir and store the mixture of cement and water.

5. The back grouting system for the top pipe wall according to claim 4, characterized in that: The water supply mechanism is provided with three water outlet pipes, which are respectively installed on the upper side and the lower side of the mixing silo and the conveying mechanism, and supply water to the inner top and the inner bottom of the mixing silo and the conveying mechanism respectively.

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