Double-liquid grouting system and shield machine

Abstract

The utility model discloses a kind of double-liquid grouting system and shield machine, including A liquid tank, B liquid tank, double-liquid grouting head, cleaning pipeline, flushing mechanism and for collecting flushing sewage sewage tank, A liquid tank is communicated with double-liquid grouting head by A liquid grouting pipeline, B liquid tank is communicated with double-liquid grouting head by B liquid grouting pipeline, cleaning pipeline is communicated with double-liquid grouting head, A liquid grouting pipeline and B liquid grouting pipeline respectively, flushing mechanism includes the flushing water tank for supplying flushing water for cleaning pipeline and the pressure-increasing assembly for keeping the preset pressure value in flushing water tank;It fills gas into flushing water tank by pressure-increasing assembly, so that the pressure in flushing water tank keeps at preset pressure value, and the preset pressure in flushing water tank can ensure that flushing water has enough pressure to flush double-liquid grouting pipeline, to timely handle double-liquid grouting pipe cleaning problem under emergency, avoid pipeline blockage, improve construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment technology, and in particular, to a dual-liquid grouting system. Furthermore, this utility model also relates to a tunnel boring machine including the aforementioned dual-liquid grouting system. Background Technology

[0002] Currently, with the large-scale construction of subways both domestically and internationally, tunnel boring machine (TBM) excavation has gradually become the main method for urban underground construction due to its inherent advantages. During the TBM's construction process, as the shield advances, gaps will form between the excavated geology and the tunnel segments. In order to fill and compact these gaps in a very short time, thereby providing timely support to the surrounding soil and rock, effectively preventing soil collapse, and controlling surface settlement, grouting operations need to be carried out simultaneously during the TBM's advancement.

[0003] For example, Chinese patent CN203925519U discloses a dual-liquid synchronous grouting control system. This system controls two grouting cylinders on a grouting pump to alternately inject and pump grout, ensuring continuous grout injection into the grout pipeline. Simultaneously, it controls the accelerator pump to operate synchronously with the grouting pump, stabilizing the mixing ratio of grout and accelerator. This significantly reduces pipe blockage and uneven mixing during the grouting process, improving the injection effect of the dual-liquid grout. The grouting operator can activate the grouting cleaning system to flush the grout pipeline with high-pressure water, removing grout adhering to the pipeline walls and preventing blockage caused by grout solidification and accumulation. However, in cases of power outages or malfunctions of the flushing pump, pipeline cleaning cannot be completed, increasing the risk of blockage and impacting construction efficiency. Utility Model Content

[0004] This invention provides a dual-liquid grouting system and a tunnel boring machine (TBM) to solve the technical problem that existing dual-liquid grouting systems cannot clean the pipelines when the TBM is powered off or the flushing water pump malfunctions.

[0005] According to one aspect of the present invention, a dual-liquid grouting system is provided, comprising an A-liquid tank, a B-liquid tank, a dual-liquid grouting head, a cleaning pipeline, a flushing mechanism, and a wastewater tank for collecting flushing wastewater. The A-liquid tank is connected to the dual-liquid grouting head via the A-liquid grouting pipeline, and the B-liquid tank is connected to the dual-liquid grouting head via the B-liquid grouting pipeline. The cleaning pipeline is connected to the dual-liquid grouting head, the A-liquid grouting pipeline, and the B-liquid grouting pipeline, respectively. The flushing mechanism includes a flushing water tank for supplying flushing water to the cleaning pipeline and a pressurizing component for maintaining a preset pressure value in the flushing water tank.

[0006] Furthermore, the A-liquid grouting pipeline includes a front section and a rear section of the A-liquid grouting pipe, the B-liquid grouting pipeline includes a front section and a rear section of the B-liquid grouting pipe, and the cleaning pipeline includes a main flushing pipeline whose inlet end is connected to the flushing water tank, a first flushing pipeline for connecting the outlet end of the main flushing pipeline to the dual-liquid grouting head, a second flushing pipeline for connecting the outlet end of the main flushing pipeline to the inlet end of the rear section of the B-liquid grouting pipe, a third flushing pipeline for connecting the outlet end of the main flushing pipeline to the inlet end of the front section of the A-liquid grouting pipe, and a fourth flushing pipeline for connecting the outlet end of the main flushing pipeline to the inlet end of the front section of the B-liquid grouting pipe. The outlet end of the front section of the A-liquid grouting pipe and the inlet end of the rear section of the A-liquid grouting pipe are both connected to the sewage tank through a first sewage pipe, and the outlet end of the front section of the B-liquid grouting pipe and the inlet end of the rear section of the B-liquid grouting pipe are both connected to the sewage tank through a second sewage pipe.

[0007] Furthermore, each of the main flushing pipeline, the second flushing pipeline, the third flushing pipeline, the fourth flushing pipeline, the front section of the A-liquid grouting pipe, the rear section of the A-liquid grouting pipe, the front section of the B-liquid grouting pipe, the first sewage pipe, and the second sewage pipe is equipped with a shut-off valve. A one-way valve connecting the inlet end to the outlet end of the rear section of the B-liquid grouting pipe is installed on the rear section of the B-liquid grouting pipe. The A-liquid tank is connected to the inlet end of the front section of the A-liquid grouting pipe via the A-liquid supply pipe. An A-liquid pump and a shut-off valve are installed on the A-liquid supply pipe. The B-liquid tank is connected to the inlet end of the front section of the B-liquid grouting pipe via the B-liquid supply pipe. A B-liquid pump and a shut-off valve are installed on the B-liquid supply pipe.

[0008] Furthermore, the A liquid supply pipe is equipped with a water supply pipe for providing external water and an on / off valve for preventing external water from entering the A liquid tank. The water supply pipe is equipped with an on / off valve, and / or

[0009] The supply pipe for liquid B is equipped with a water supply pipe for providing external water and an on / off valve for preventing external water from entering the liquid B tank. The supply pipe is equipped with the on / off valve.

[0010] Furthermore, the pressure sensor and / or flow meter are respectively installed on the main flushing pipe, the front section of the A liquid grouting pipe, and the front section of the B liquid grouting pipe.

[0011] Furthermore, the flushing mechanism also includes a flushing water pump, which is connected to the inlet end of the main flushing pipeline via an on / off valve.

[0012] Furthermore, the flushing water tank is equipped with a water supply pipe and at least one liquid level sensor, and the water supply pipe is equipped with an on / off valve.

[0013] Furthermore, the flushing water tank is equipped with a pressure sensor and a pressure relief valve.

[0014] Furthermore, the pressurization assembly includes an air handling unit, a pressure reducing valve, a pneumatic controller, a pressure transmitter, a pneumatic intake regulating valve, and a pneumatic exhaust regulating valve. An air source is connected to the air inlet of the air handling unit and the air inlet of the pneumatic intake regulating valve. The air outlet of the air handling unit is connected to the air inlet of the pressure reducing valve, the Z-port of the pneumatic intake regulating valve, and the Z-port of the pneumatic exhaust regulating valve. The air outlet of the pressure reducing valve is connected to the Z-port of the pressure transmitter and the Z-port of the pneumatic controller. The pressure transmitter is connected to the top of the flushing water tank. The A-port of the pressure transmitter is connected to the X-port of the pneumatic controller. The Y-port of the pneumatic controller is connected to the E-port of the pneumatic intake regulating valve and the E-port of the pneumatic exhaust regulating valve. The air outlet of the pneumatic intake regulating valve and the air inlet of the pneumatic exhaust regulating valve are connected to the top of the flushing water tank.

[0015] According to another aspect of the present invention, a tunnel boring machine is also provided, which includes the above-described dual-liquid grouting system.

[0016] This utility model has the following beneficial effects:

[0017] This utility model's dual-liquid grouting system stores sufficient flushing water in a flushing tank, and then injects gas into the flushing tank through a pressurization component, maintaining the pressure in the flushing tank at a preset pressure value. When the tunnel boring machine loses power or the flushing water pump malfunctions, the preset pressure in the flushing tank ensures that the flushing water has sufficient pressure to flush the dual-liquid grouting pipeline, thereby promptly addressing the dual-liquid grouting pipeline cleaning problem in emergency situations, preventing pipeline blockage, and improving construction efficiency.

[0018] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 This is one of the structural schematic diagrams of the preferred embodiment of the dual-liquid grouting system of this utility model;

[0021] Figure 2 This is a schematic diagram of the rinsing mechanism according to a preferred embodiment of the present invention;

[0022] Figure 3This is the second schematic diagram of the structure of the preferred embodiment of the dual-liquid grouting system of this utility model;

[0023] Figure 4 This is a schematic diagram of the pressurization component according to a preferred embodiment of the present invention.

[0024] Legend:

[0025] 1. Liquid A tank; 11. Liquid A supply pipe; 111. Liquid A pump; 112. First pneumatic valve; 113. Third manual valve; 12. Front section of Liquid A grouting pipe; 121. Second pneumatic valve; 122. First flow meter; 123. First pressure sensor; 13. Rear section of Liquid A grouting pipe; 131. Third pneumatic valve; 132. Second pressure sensor; 2. Liquid B tank; 21. Liquid B supply pipe; 211. Liquid B pump; 212. Fourth pneumatic valve; 213. Fourth manual valve; 22. Front section of B-liquid grouting pipe; 221. Fifth pneumatic valve; 222. Second flow meter; 223. Third pressure sensor; 23. Rear section of B-liquid grouting pipe; 231. First check valve; 232. Fourth pressure sensor; 24. Water supply pipe; 241. Fifth manual valve; 3. Dual-liquid grouting head; 4. Flushing mechanism; 40. Flushing water tank; 401. Water supply pipe; 402. Liquid level sensor; 403. Sixth pneumatic valve; 404. Fifth pressure sensor Force sensor; 405, pressure relief valve; 41, main flushing line; 411, seventh pneumatic valve; 412, third flow meter; 413, sixth pressure sensor; 414, second check valve; 415, first manual valve; 416, eighth pneumatic valve; 417, third check valve; 418, second manual valve; 42, first flushing line; 43, second flushing line; 431, ninth pneumatic valve; 44, third flushing line; 441, tenth pneumatic valve ; 45. Fourth flushing pipe; 451. Eleventh pneumatic valve; 46. Flushing water pump; 5. Sewage tank; 51. First sewage pipe; 511. Twelfth pneumatic valve; 52. Second sewage pipe; 521. Thirteenth pneumatic valve; 53. Fourth check valve; 6. Pressurization assembly; 61. Air handling unit; 62. Pressure reducing valve; 63. Pneumatic controller; 64. Pressure transmitter; 65. Pneumatic intake regulating valve; 66. Pneumatic exhaust regulating valve; 67. Silencer. Detailed Implementation

[0026] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0027] Please refer to the following: Figures 1 to 4The dual-liquid grouting system of this embodiment includes an A-liquid tank 1, a B-liquid tank 2, a dual-liquid grouting head 3, a cleaning pipeline, a flushing mechanism 4, and a wastewater tank 5 for collecting flushing wastewater. The A-liquid tank 1 is connected to the dual-liquid grouting head 3 through the A-liquid grouting pipeline, and the B-liquid tank 2 is connected to the dual-liquid grouting head 3 through the B-liquid grouting pipeline. The cleaning pipeline is connected to the dual-liquid grouting head 3, the A-liquid grouting pipeline, and the B-liquid grouting pipeline, respectively. The flushing mechanism 4 includes a flushing water tank 40 for supplying flushing water to the cleaning pipeline and a pressurizing component 6 for maintaining a preset pressure value in the flushing water tank 40.

[0028] In this embodiment of the dual-liquid grouting system, sufficient flushing water is stored in the flushing water tank 40. Then, gas is injected into the flushing water tank 40 through the pressurization component 6, maintaining the pressure in the flushing water tank 40 at a preset pressure value. When the tunnel boring machine experiences a power outage or the flushing water pump 46 malfunctions, the preset pressure value in the flushing water tank 40 ensures that the flushing water has sufficient pressure to flush the dual-liquid grouting pipeline, thus promptly addressing the dual-liquid grouting pipeline cleaning issue in emergency situations, preventing pipeline blockage, and improving construction efficiency. Optionally, the preset pressure value in the flushing water tank 40 is 0-10 bar.

[0029] like Figure 1 and Figure 2 As shown, in this embodiment, the A-liquid grouting pipeline includes a front section 12 and a rear section 13 of the A-liquid grouting pipe, the B-liquid grouting pipeline includes a front section 22 and a rear section 23 of the B-liquid grouting pipe, and the cleaning pipeline includes a main flushing pipeline 41 whose inlet end is connected to the flushing water tank 40, a first flushing pipeline 42 connecting the outlet end of the main flushing pipeline 41 to the dual-liquid grouting head 3, a second flushing pipeline 43 connecting the outlet end of the main flushing pipeline 41 to the inlet end of the rear section 23 of the B-liquid grouting pipe, a third flushing pipeline 44 connecting the outlet end of the main flushing pipeline 41 to the inlet end of the front section 12 of the A-liquid grouting pipe, and a fourth flushing pipeline 45 connecting the outlet end of the main flushing pipeline 41 to the inlet end of the front section 22 of the B-liquid grouting pipe. The outlet end of the front section 12 of the liquid grouting pipe and the inlet end of the rear section 13 of the A-liquid grouting pipe are both connected to the sewage tank 5 through the first sewage pipe 51. The outlet end of the front section 22 of the B-liquid grouting pipe and the inlet end of the rear section 23 of the B-liquid grouting pipe are both connected to the sewage tank 5 through the second sewage pipe 52. The A-liquid grouting pipe is divided into the front section 12 and the rear section 13 of the A-liquid grouting pipe through the cleaning pipeline, and the B-liquid grouting pipe is divided into the front section 22 and the rear section 23 of the B-liquid grouting pipe, so as to realize the segmented flushing of the dual-liquid grouting pipe. This can shorten the pipeline distance for a single flush and reduce the pressure required for flushing. On the one hand, it reduces the requirements of the flushing water tank 40 and reduces the manufacturing cost. On the other hand, it reduces the energy consumption of the pressurization component 6 and reduces the operating cost.

[0030] like Figure 1 and Figure 2As shown, in this embodiment, the main flushing pipeline 41, the second flushing pipeline 43, the third flushing pipeline 44, the fourth flushing pipeline 45, the front section 12 of the A-liquid grouting pipe, the rear section 13 of the A-liquid grouting pipe, the front section 22 of the B-liquid grouting pipe, the first sewage pipe 51, and the second sewage pipe 52 are each equipped with a shut-off valve. A one-way valve connecting the inlet end to the outlet end of the rear section 23 of the B-liquid grouting pipe is installed on the rear section 23 of the B-liquid grouting pipe. The A-liquid tank 1 is connected to the inlet end of the front section 12 of the A-liquid grouting pipe via the A-liquid supply pipe 11. The A-liquid supply pipe 11 is equipped with an A-liquid pump 111 and a shut-off valve. The B-liquid tank 2 is connected to the inlet end of the front section 22 of the B-liquid grouting pipe via the B-liquid supply pipe 21. A B-liquid pump 211 and an on / off valve are installed on the supply pipe 21; an A-liquid pump 111 and a first pneumatic valve 112 are installed on the A-liquid supply pipe 11; a second pneumatic valve 121 is installed on the front section 12 of the A-liquid grouting pipe; a third pneumatic valve 131 is installed on the rear section 13 of the A-liquid grouting pipe; a B-liquid pump 211 and a fourth pneumatic valve 212 are installed on the B-liquid supply pipe 21; a fifth pneumatic valve 221 is installed on the front section 22 of the B-liquid grouting pipe; a first check valve 231 is installed on the rear section 23 of the B-liquid grouting pipe; a seventh pneumatic valve 411 is installed on the main flushing pipe 41; a ninth pneumatic valve 431 is installed on the second flushing pipe 43; and a tenth pneumatic valve is installed on the third flushing pipe 44. 441. An eleventh pneumatic valve 451 is installed on the fourth flushing pipe 45, a twelfth pneumatic valve 511 is installed on the first sewage pipe 51, and a thirteenth pneumatic valve 521 is installed on the second sewage pipe 52. When the tunnel boring machine loses power or the flushing water pump 46 malfunctions, the second pneumatic valve 121, the ninth pneumatic valve 431, the tenth pneumatic valve 441, the eleventh pneumatic valve 451, and the thirteenth pneumatic valve 521 are closed, and the seventh pneumatic valve 411, the third pneumatic valve 131, and the twelfth pneumatic valve 511 are opened, so that the flushing water in the flushing water tank 40 flows sequentially through the main flushing pipe 41, the first flushing pipe 42, the dual-liquid grouting head 3, the rear section 13 of the A-liquid grouting pipe, and the first sewage pipe. 51. Finally, the water enters the sewage tank 5 to achieve backwashing of the rear section 13 of the A-liquid grouting pipe. When the shield machine loses power or the flushing water pump 46 fails, the first pneumatic valve 112, the third pneumatic valve 131, the ninth pneumatic valve 431, the eleventh pneumatic valve 451 and the thirteenth pneumatic valve 521 are closed, and the seventh pneumatic valve 411, the tenth pneumatic valve 441, the second pneumatic valve 121 and the twelfth pneumatic valve 511 are opened, so that the flushing water in the flushing water tank 40 flows sequentially through the main flushing pipeline 41, the second flushing pipeline 43, the third flushing pipeline 44, the front section 12 of the A-liquid grouting pipe and the first sewage pipe 51, and finally enters the sewage tank 5 to complete the forward flushing of the front section 12 of the A-liquid grouting pipe.When the tunnel boring machine (TBM) experiences a power outage or the flushing water pump 46 malfunctions, the fifth pneumatic valve 221, the tenth pneumatic valve 441, the eleventh pneumatic valve 451, and the thirteenth pneumatic valve 521 are closed, while the seventh pneumatic valve 411, the ninth pneumatic valve 431, the third pneumatic valve 131, and the twelfth pneumatic valve 511 are opened. This allows the flushing water in the flushing water tank 40 to flow sequentially through the main flushing pipeline 41, the second flushing pipeline 43, the rear section 23 of the B-liquid grouting pipe, the dual-liquid grouting head 3, the rear section 13 of the A-liquid grouting pipe, and the first sewage pipe 51, ultimately entering the sewage tank 5, thus achieving positive flushing of the rear section 23 of the B-liquid grouting pipe. When the TBM experiences a power outage or the flushing water pump 46 malfunctions... Close the fourth pneumatic valve 212, the ninth pneumatic valve 431, the tenth pneumatic valve 441, the third pneumatic valve 131, and the twelfth pneumatic valve 511, and open the seventh pneumatic valve 411, the eleventh pneumatic valve 451, the fifth pneumatic valve 221, and the thirteenth pneumatic valve 521. This allows the flushing water in the flushing water tank 40 to flow sequentially through the main flushing pipe 41, the second flushing pipe 43, the fourth flushing pipe 45, the front section 22 of the B-liquid grouting pipe, and the second sewage pipe 52, finally entering the sewage tank 5, thus achieving positive flushing of the front section 22 of the B-liquid grouting pipe. This segmented flushing allows for quick and accurate location of pipe blockages, facilitating subsequent maintenance. Optionally, the first sewage pipe 51 and the second sewage pipe 52 are connected to the sewage tank 5 via the fourth one-way valve 53 to prevent backflow of sewage collected in the sewage tank 5. Optionally, the flushing water tank 40 is connected to the inlet end of the main flushing pipeline 41 via an eighth pneumatic valve 416, and the flushing water tank 40 is also connected to the inlet end of the main flushing pipeline 41 via a first manual valve 415. When the eighth pneumatic valve 416 malfunctions and cannot be controlled from the cab, the first manual valve 415 can be manually opened to ensure normal flushing. Optionally, a second check valve 414 is installed at the outlet end of the main flushing pipeline 41 to prevent backflow of flushing water.

[0031] like Figure 1 and Figure 2As shown, in this embodiment, the A liquid supply pipe 11 is equipped with a water supply pipe 24 for providing external water and a third manual valve 113 for preventing external water from entering the A liquid tank 1. The water supply pipe 24 is equipped with a fifth manual valve 241. When the flushing water pump 46 fails but the tunnel boring machine is not powered off, the fifth manual valve 241 is opened and the third manual valve 113 is closed. The external water provided by the water supply pipe 24 can be used to flush the A liquid grouting pipeline through the A liquid pump 111. The B liquid supply pipe 21 is equipped with a water supply pipe 24 for providing external water and a fourth manual valve 213 for preventing external water from entering the B liquid tank 2. The water supply pipe 24 is equipped with a fifth manual valve 241. When the flushing water pump 46 fails, the fifth manual valve 241 is opened and the fourth manual valve 213 is closed. The external water provided by the water supply pipe 24 can be used to flush the B liquid grouting pipeline through the B liquid pump 211. Optionally, the third manual valve 113 and the fourth manual valve 213 can also be check valves. Optionally, the fifth manual valve 241 can also be a solenoid valve or a pneumatic valve.

[0032] like Figure 1 and Figure 2 As shown, in this embodiment, a first pressure sensor 123 and a first flow meter 122 are installed on the front section 12 of the A-liquid grouting pipe. When the front section 12 of the A-liquid grouting pipe is flushed, the first pressure sensor 123 and the first flow meter 122 are observed to determine whether the front section 12 of the A-liquid grouting pipe is blocked (if the pressure is high, the flow meter reading is 0, indicating blockage; otherwise, it is not blocked). A third pressure sensor 223 and a second flow meter 222 are installed on the front section 22 of the B-liquid grouting pipe. When the front section 22 of the B-liquid grouting pipe is flushed, the first pressure sensor 123 and the first flow meter 122 are observed to determine whether the front section 12 of the A-liquid grouting pipe is blocked (if the pressure is high, the flow meter reading is 0, indicating blockage; otherwise, it is not blocked). A pressure sensor 223 and a second flow meter 222 are used to determine whether the front section 22 of the B-liquid grouting pipe is blocked (if the pressure is high, the flow meter reading is 0, indicating blockage; otherwise, it is not blocked). A sixth pressure sensor 413 and a third flow meter 412 are installed on the main flushing pipeline 41. When backflushing the rear section 13 of the A-liquid grouting pipe or forward flushing the rear section 23 of the B-liquid grouting pipe, the sixth pressure sensor 413 and the third flow meter 412 are observed to determine whether the pipeline is blocked (if the pressure is high, the flow meter reading is 0, indicating blockage; otherwise, it is not blocked). Optionally, a second pressure sensor 132 is installed on the rear section 13 of the A-liquid grouting pipe. When backflushing the rear section 13 of the A-liquid grouting pipe, the second pressure sensor 132 and the third flow meter 412 are observed to determine whether the pipeline is blocked (if the pressure is high, the flow meter reading is 0, indicating blockage; otherwise, it is not blocked). Optionally, a fourth pressure sensor 232 is installed on the downstream section 23 of the B-liquid grouting pipe. When the downstream section 23 of the B-liquid grouting pipe is flushed, the pipe is checked by observing the fourth pressure sensor 232 and the third flow meter 412 to determine whether the pipe is blocked (if the pressure is high, the flow meter reading is 0, then it is blocked; otherwise, it is not blocked).

[0033] like Figure 1 and Figure 2 As shown, in this embodiment, the flushing mechanism 4 also includes a flushing water pump 46. The flushing water pump 46 is connected to the inlet end of the flushing main pipeline 41 through a third one-way valve 417. When the tunnel boring machine finishes normal operation, the flushing water pump 46 can flush the dual-liquid grouting pipeline without using the flushing water in the flushing water tank 40. When flushing the flushing water in the flushing water tank 40, the third one-way valve 417 can prevent the flushing water in the flushing water tank 40 from flowing out from the flushing water pump 46 side and causing waste. Optionally, the third one-way valve 417 can also be a second manual valve 418.

[0034] like Figure 1 and Figure 2 As shown, in this embodiment, the flushing water tank 40 is equipped with a water supply pipe 401 and two liquid level sensors 402. The water supply pipe 401 is equipped with a sixth pneumatic valve 403. The two liquid level sensors 402 are used to detect high and low liquid levels, respectively. When the liquid level of the flushing water tank 40 is lower than the liquid level sensor 402 at the low liquid level, the sixth pneumatic valve 403 is opened to replenish water to the flushing water tank 40. When the liquid level of the flushing water tank 40 reaches the liquid level sensor 402 at the high liquid level, the sixth pneumatic valve 403 is closed to stop replenishing water to the flushing water tank 40.

[0035] like Figure 1 and Figure 2 As shown, in this embodiment, a fifth pressure sensor 404 and a pressure relief valve 405 are installed on the flushing water tank 40. The fifth pressure sensor 404 monitors the pressure inside the flushing water tank 40 in real time. When the pressure inside the flushing water tank 40 is higher than the preset pressure value, the pressure relief valve 405 releases pressure. When the pressure inside the flushing water tank 40 is lower than the preset pressure value, the pressurization component 6 is turned on to inflate the flushing water tank 40, which can ensure that the pressure inside the flushing water tank 40 is stable.

[0036] like Figure 3 and Figure 4As shown, in this embodiment, the booster assembly 6 includes an air handling unit 61, a pressure reducing valve 62, a pneumatic controller 63, a pressure transmitter 64, a pneumatic intake regulating valve 65, and a pneumatic exhaust regulating valve 66. The air source is connected to the air inlet of the air handling unit 61 and the air inlet of the pneumatic intake regulating valve 65, respectively. The air outlet of the air handling unit 61 is connected to the air inlet of the pressure reducing valve 62, the Z-port of the pneumatic intake regulating valve 65, and the Z-port of the pneumatic exhaust regulating valve 66, respectively. The air outlet of the pressure reducing valve 62 is connected to the Z-port of the pressure transmitter 64 and the pneumatic exhaust regulating valve 66, respectively. The Z port of controller 63 is connected, the pressure transmitter 64 is connected to the top of the flushing water tank 40, the A port of pressure transmitter 64 is connected to the X port of pneumatic controller 63, the Y port of pneumatic controller 63 is connected to the E port of pneumatic intake regulating valve 65 and the E port of pneumatic exhaust regulating valve 66 respectively, and the air outlet of pneumatic intake regulating valve 65 and the air inlet of pneumatic exhaust regulating valve 66 are respectively connected to the top of flushing water tank 40; the air source provides a 4 bar airflow through air handling unit 61, which is connected to pneumatic intake regulating valve 65 through pipelines. The Z-port of the air handling unit 61 is connected to the Z-port of the pneumatic exhaust regulating valve 66, thereby providing a power source for the pneumatic intake regulating valve 65 and the pneumatic exhaust regulating valve 66; the air handling unit 61 also provides a 4 bar airflow that is reduced to 1.4 bar through the pressure reducing valve 62, and the 1.4 bar airflow is connected to the Z-port of the pressure transmitter 64 and the Z-port of the pneumatic controller 63 through pipelines, respectively, providing a power source for the pressure transmitter 64 and the pneumatic controller 63; the pressure transmitter 64 is connected to the top of the flushing water tank 40 through a pipeline, and the pressure transmitter 64 provides real-time power to the pressure transmitter 64 and the pneumatic controller 63. The pressure at the top of the flushing water tank 40 is transmitted by 0.2-1 bar to the X port of the pneumatic controller 63 through the A port of the pressure transmitter 64. The pneumatic controller 63 compares the preset pressure with the pressure fed back by the pressure transmitter 64 and outputs an air pressure of 0.2-1 bar. The air pressure is connected to the E port of the pneumatic air intake regulating valve 65 and the E port of the pneumatic air exhaust regulating valve 66 through the Y port of the pneumatic controller 63, thereby adjusting the opening of the pneumatic air intake regulating valve 65 and the pneumatic air exhaust regulating valve 66 to ensure that the air pressure at the top of the flushing water tank 40 is maintained at the preset pressure. When the pressure at the top of the flushing water tank 40 is higher than the preset pressure, the pneumatic air inlet regulating valve 65 closes and the pneumatic air outlet regulating valve 66 opens, allowing the gas at the top of the flushing water tank 40 to be discharged through the pneumatic air outlet regulating valve 66. When the pressure at the top of the flushing water tank 40 is lower than the preset pressure, the pneumatic air inlet regulating valve 65 opens and the pneumatic air outlet regulating valve 66 closes, allowing the gas supplied by the air source to enter the top of the flushing water tank 40 through the pneumatic air inlet regulating valve 65, ensuring that the air pressure at the top of the flushing water tank 40 is maintained at the preset pressure. Optionally, a silencer 67 is provided on the outlet of the pneumatic air outlet regulating valve 66.

[0037] A tunnel boring machine (TBM) includes the aforementioned dual-liquid grouting system. When the TBM finishes normal operation, the dual-liquid grouting pipeline can be flushed by a flushing water pump 46, eliminating the need to use the flushing water in the flushing water tank 40. When the flushing water in the flushing water tank 40 needs to be used, a third check valve 417 prevents the flushing water in the flushing water tank 40 from leaking out from the flushing water pump 46 side, thus avoiding waste. When the flushing water pump 46 malfunctions but the TBM is not powered off, the fifth manual valve 241 is opened and the third manual valve 113 is closed, and the water supply pipe 24 provides... The external water source can be used to flush the A-liquid grouting pipeline via the A-liquid pump 111. The B-liquid supply pipe 21 is equipped with a water supply pipe 24 for providing external water and a fourth manual valve 213 to prevent external water from entering the B-liquid tank 2. A fifth manual valve 241 is installed on the water supply pipe 24. When the flushing water pump 46 malfunctions but the tunnel boring machine is not powered off, the fifth manual valve 241 is opened and the fourth manual valve 213 is closed. The external water source provided by the water supply pipe 24 can then be used to flush the B-liquid grouting pipeline via the B-liquid pump 211. Optionally, the third manual valve 113 and the fourth manual valve 213 can also be one-way valves.Optionally, the fifth manual valve 241 can also be a solenoid valve or a pneumatic valve; when the tunnel boring machine loses power or the flushing water pump 46 malfunctions, the second pneumatic valve 121, the ninth pneumatic valve 431, the tenth pneumatic valve 441, the eleventh pneumatic valve 451 and the thirteenth pneumatic valve 521 are closed, and the seventh pneumatic valve 411, the third pneumatic valve 131 and the twelfth pneumatic valve 511 are opened, so that the flushing water in the flushing water tank 40 flows sequentially through the main flushing pipeline 41, the first flushing pipeline 42, the dual-liquid grouting head 3, the rear section 13 of the A-liquid grouting pipe and the first sewage pipe 51, and finally enters the sewage tank 5, realizing the backwashing of the rear section 13 of the A-liquid grouting pipe; when the tunnel boring machine loses power or the flushing water pump 46 malfunctions, the first pneumatic valve 11 is closed. 2. The third pneumatic valve 131, the ninth pneumatic valve 431, the eleventh pneumatic valve 451, and the thirteenth pneumatic valve 521 are opened, and the seventh pneumatic valve 411, the tenth pneumatic valve 441, the second pneumatic valve 121, and the twelfth pneumatic valve 511 are opened, so that the flushing water in the flushing water tank 40 flows sequentially through the main flushing pipeline 41, the second branch flushing pipeline 43, the third branch flushing pipeline 44, the front section 12 of the A-liquid grouting pipe 41, and the first sewage pipe 51, and finally enters the sewage tank 5, completing the forward flushing of the front section 12 of the A-liquid grouting pipe; when the shield machine loses power or the flushing water pump 46 malfunctions, the fifth pneumatic valve 221, the tenth pneumatic valve 441, the eleventh pneumatic valve 451, and the thirteenth pneumatic valve 521 are closed, and the seventh pneumatic valve 411, the tenth pneumatic valve 441, the eleventh pneumatic valve 451, and the thirteenth pneumatic valve 521 are opened. 11. The ninth pneumatic valve 431, the third pneumatic valve 131, and the twelfth pneumatic valve 511 allow the flushing water in the flushing water tank 40 to flow sequentially through the main flushing pipeline 41, the second branch flushing pipeline 43, the rear section 23 of the B-liquid grouting pipe, the dual-liquid grouting head 3, the rear section 13 of the A-liquid grouting pipe, and the first sewage pipe 51, finally entering the sewage tank 5, thus achieving positive flushing of the rear section 23 of the B-liquid grouting pipe; when the tunnel boring machine loses power or the flushing water pump 46 malfunctions, the fourth pneumatic valve 212, the ninth pneumatic valve 431, the tenth pneumatic valve 441, the third pneumatic valve 131, and the twelfth pneumatic valve 511 are closed, and the seventh pneumatic valve 411, the eleventh pneumatic valve 451, the fifth pneumatic valve 221, and the thirteenth pneumatic valve 521 are opened, allowing... The flushing water in the flushing water tank 40 flows sequentially through the main flushing pipeline 41, the second flushing pipeline 43, the fourth flushing pipeline 45, the front section 22 of the B-liquid grouting pipe, and the second sewage pipe 52, finally entering the sewage tank 5, thus achieving positive flushing of the front section 22 of the B-liquid grouting pipe. The dual-liquid grouting system can directly adjust the pressure of the flushing water tank remotely in the main control room of the tunnel boring machine through the control pneumatic controller 63, making pipeline cleaning work more convenient. In the event of a power outage of the tunnel boring machine or malfunction of the flushing water pump 46, the dual-liquid grouting pipeline cleaning function can be realized, ensuring that the AB-liquid pipeline flushing is thorough and reducing the risk of pipe blockage. Through the health of the pressure sensor and flow meter, the pipeline dredging status can be more accurately controlled, which can improve construction efficiency.

[0038] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-liquid grouting system, characterized in that, The system includes an A liquid tank (1), a B liquid tank (2), a dual-liquid grouting head (3), a cleaning pipeline, a flushing mechanism (4), and a wastewater tank (5) for collecting flushing wastewater. The A liquid tank (1) is connected to the dual-liquid grouting head (3) through the A liquid grouting pipeline, and the B liquid tank (2) is connected to the dual-liquid grouting head (3) through the B liquid grouting pipeline. The cleaning pipeline is connected to the dual-liquid grouting head (3), the A liquid grouting pipeline, and the B liquid grouting pipeline, respectively. The flushing mechanism (4) includes a flushing water tank (40) for supplying flushing water to the cleaning pipeline and a pressurizing component (6) for maintaining a preset pressure value in the flushing water tank (40).

2. The dual-liquid grouting system according to claim 1, characterized in that, The A-liquid grouting pipeline includes a front section (12) and a rear section (13) of the A-liquid grouting pipe. The B-liquid grouting pipeline includes a front section (22) and a rear section (23) of the B-liquid grouting pipe. The cleaning pipeline includes a main flushing pipeline (41) whose inlet end is connected to the flushing water tank (40), a first flushing pipeline (42) for connecting the outlet end of the main flushing pipeline (41) to the dual-liquid grouting head (3), a second flushing pipeline (43) for connecting the outlet end of the main flushing pipeline (41) to the inlet end of the rear section (23) of the B-liquid grouting pipe, and a pipeline for connecting the main flushing pipeline. The outlet end of the flushing pipe (41) is connected to the inlet end of the front section (12) of the A liquid grouting pipe, and the fourth flushing pipe (45) is connected to the outlet end of the flushing main pipe (41) and the inlet end of the front section (22) of the B liquid grouting pipe. The outlet end of the front section (12) of the A liquid grouting pipe and the inlet end of the rear section (13) of the A liquid grouting pipe are both connected to the sewage tank (5) through the first sewage pipe (51). The outlet end of the front section (22) of the B liquid grouting pipe and the inlet end of the rear section (23) of the B liquid grouting pipe are both connected to the sewage tank (5) through the second sewage pipe (52).

3. The dual-liquid grouting system according to claim 2, characterized in that, The main flushing pipeline (41), the second flushing pipeline (43), the third flushing pipeline (44), the fourth flushing pipeline (45), the front section (12) of the A-liquid grouting pipe, the rear section (13) of the A-liquid grouting pipe, the front section (22) of the B-liquid grouting pipe, the first sewage pipe (51), and the second sewage pipe (52) are each equipped with a shut-off valve. The rear section (23) of the B-liquid grouting pipe is equipped with a valve for grouting by the B-liquid. The inlet end of the pipe section (23) is connected to the outlet end by a one-way valve. The A liquid tank (1) is connected to the inlet end of the front section (12) of the A liquid grouting pipe through the A liquid supply pipe (11). The A liquid supply pipe (11) is equipped with an A liquid pump (111) and an on / off valve. The B liquid tank (2) is connected to the inlet end of the front section (22) of the B liquid grouting pipe through the B liquid supply pipe (21). The B liquid supply pipe (21) is equipped with a B liquid pump (211) and an on / off valve.

4. The dual-liquid grouting system according to claim 3, characterized in that, The A liquid supply pipe (11) is equipped with a water supply pipe (24) for providing external water and an on / off valve for preventing external water from entering the A liquid tank (1). The water supply pipe (24) is equipped with an on / off valve, and / or The supply pipe (21) for liquid B is provided with a water supply pipe (24) for providing external water and a shut-off valve for preventing external water from entering the liquid B tank (2). The supply pipe (24) is provided with a shut-off valve.

5. The dual-liquid grouting system according to any one of claims 2 to 4, characterized in that, Pressure sensors and / or flow meters are respectively installed on the main flushing pipeline (41), the front section (12) of the A liquid grouting pipe, and the front section (22) of the B liquid grouting pipe.

6. The dual-liquid grouting system according to claim 5, characterized in that, The flushing mechanism (4) also includes a flushing water pump (46), which is connected to the inlet end of the flushing main pipeline (41) via an on / off valve.

7. The dual-liquid grouting system according to claim 5, characterized in that, The flushing water tank (40) is equipped with a water supply pipe (401) and at least one liquid level sensor, and the water supply pipe (401) is equipped with an on / off valve.

8. The dual-liquid grouting system according to claim 5, characterized in that, The flushing water tank (40) is equipped with a pressure sensor and a pressure relief valve.

9. The dual-liquid grouting system according to claim 1, characterized in that, The booster assembly (6) includes an air handling unit (61), a pressure reducing valve (62), a pneumatic controller (63), a pressure transmitter (64), a pneumatic intake regulating valve (65), and a pneumatic exhaust regulating valve (66). An air source is connected to the air inlet of the air handling unit (61) and the air inlet of the pneumatic intake regulating valve (65). The air outlet of the air handling unit (61) is connected to the air inlet of the pressure reducing valve (62), the Z-port of the pneumatic intake regulating valve (65), and the Z-port of the pneumatic exhaust regulating valve (66). The air outlet of the pressure reducing valve (62) is... The pressure transmitter (64) is connected to the Z port of the pressure transmitter (64) and the Z port of the pneumatic controller (63) respectively. The pressure transmitter (64) is connected to the top of the flushing water tank (40). The A port of the pressure transmitter (64) is connected to the X port of the pneumatic controller (63). The Y port of the pneumatic controller (63) is connected to the E port of the pneumatic air intake regulating valve (65) and the E port of the pneumatic air exhaust regulating valve (66) respectively. The air outlet of the pneumatic air intake regulating valve (65) and the air inlet of the pneumatic air exhaust regulating valve (66) are respectively connected to the top of the flushing water tank (40).

10. A tunnel boring machine, characterized in that, The system includes the dual-liquid grouting system according to any one of claims 1 to 9.

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