Methods for protecting ancient buildings when tunnel boring machines pass through them

Abstract

This invention discloses a method for protecting ancient buildings when a tunnel boring machine (TBM) passes through them. The method includes determining the impact range of the TBM's tunnel excavation on the ancient building; identifying grouting points within the impact range; installing grouting pipes at these points; monitoring the settlement parameters of the ancient building while the TBM is passing through it; determining a grouting strategy based on these parameters; controlling a grouting device to inject grout into the ground through the grouting pipes according to the grouting strategy; determining a tunneling strategy based on the settlement parameters; adjusting the TBM's tunneling parameters according to the tunneling strategy; and controlling the TBM's passage through the ancient building according to these parameters. This invention provides a method for protecting ancient buildings when a TBM is passing through them, which can stabilize the foundation of the ancient building during tunneling and minimize the impact of the TBM's excavation, thus achieving the goal of protecting the ancient building during the tunneling process.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, and in particular to a method for protecting ancient buildings when a tunnel boring machine passes through them. Background Technology

[0002] When tunnel boring machines (TBMs) are excavating tunnels, they inevitably affect buildings on the ground. In particular, when TBMs pass through ancient building complexes, how to protect the ancient building complexes on the ground when the TBM passes through the strata where the ancient building complexes are located has become an urgent problem to be solved in tunnel construction. Summary of the Invention

[0003] The main objective of this invention is to provide a method for protecting ancient buildings when a tunnel boring machine (TBM) passes through them, specifically a method for protecting the ancient buildings on the ground when the TBM passes through the underground of an ancient building complex.

[0004] To achieve the above objectives, the present invention proposes a method for protecting ancient buildings when a tunnel boring machine passes through them, comprising the following steps:

[0005] S10. Determine the range of impact of tunnel excavation by the tunnel boring machine on ancient buildings;

[0006] S20. After determining the pipe laying point within the affected area, a grouting pipe is laid at the pipe laying point.

[0007] S30. When the tunnel boring machine passes through an ancient building, monitor the settlement parameters of the ancient building.

[0008] S40. Determine the grouting strategy based on the settlement parameters, and control the grouting device to inject grout into the formation through the grouting pipe according to the grouting strategy;

[0009] S50. Determine the tunneling strategy based on the settlement parameters, adjust the tunneling parameters of the tunnel boring machine based on the tunneling strategy, and control the tunnel boring machine to pass through ancient buildings based on the tunneling parameters.

[0010] Optionally, determining the impact range of the tunnel excavation by the tunnel boring machine on ancient buildings includes:

[0011] S101. Calculate the width of the impact on the ground when the tunnel boring machine excavates the tunnel, based on the tunnel depth and the internal friction angle of the surrounding strata.

[0012] S102. Compare the width of the influence with the width of the ancient building to determine the range of influence of the tunnel excavation by the tunnel boring machine on the ancient building.

[0013] Optionally, the width of the impact on the ground during tunnel excavation by the tunnel boring machine can be calculated using the following formula, based on the tunnel depth and the internal friction angle of the surrounding strata:

[0014] ;

[0015] Where W represents the width of the impact on the ground when the tunnel boring machine is excavating the tunnel;

[0016] Z represents the tunnel depth;

[0017] β is the internal friction angle of the strata surrounding the tunnel.

[0018] Optionally, the grouting pipe is installed at the burial point, including the following steps:

[0019] S201. At the buried pipe point, a first buried pipe hole segment is formed by drilling a hole to a first preset depth;

[0020] S202. Install the prefabricated protective wall into the first buried pipe section;

[0021] S203. Continue drilling the buried pipe hole at the first preset depth so that the installed prefabricated protective wall slowly sinks and a second buried pipe hole segment is formed above the prefabricated protective wall.

[0022] S204. Continue to install the prefabricated retaining wall into the second buried pipe section;

[0023] S205. Repeat steps S203 to S204 above until the embedded pipe hole is formed;

[0024] S206. Install the grouting pipe into the buried pipe hole.

[0025] Optionally, before installing the grouting pipe into the buried pipe hole, the method further includes:

[0026] S2071. Prepare hydraulic pump, hydraulic hoses, multiple sleeve valve hoses, multiple PVC hoses, fly ash, bentonite, cement and water;

[0027] S2072. The shell material is prepared by mixing fly ash, bentonite, cement and water.

[0028] S2073. Before the casing material solidifies, the casing material is injected from the bottom of the buried pipe hole through the hydraulic pump and hydraulic pipe until the casing material is injected out from the opening of the buried pipe hole.

[0029] S2073. Connect each of the sleeve valve pipes through the polyvinyl chloride pipe to form the grouting pipe.

[0030] Optionally, after connecting each of the sleeve valve pipes through the polyvinyl chloride pipe to form the grouting pipe, the method further includes:

[0031] S2074, Provide sealing plugs;

[0032] S2075. A sealing plug is provided at the end of the grouting pipe facing the bottom wall of the buried pipe hole;

[0033] S2076. Water is introduced into the grouting pipe through the end of the grouting pipe away from the bottom wall of the buried pipe hole.

[0034] Optionally, before determining the grouting strategy based on the settlement parameters and controlling the grouting device to inject grout into the formation through the grouting pipe according to the grouting strategy, the method further includes:

[0035] S801 provides water, cement ash, and water glass;

[0036] S802. Prepare the water and cement ash according to the first preset mass ratio to form cement slurry;

[0037] S803. The cement slurry and the water glass are prepared according to the second preset mass ratio to form the slurry.

[0038] Optionally, the first preset mass ratio is A, where 4 / 5 ≤ A ≤ 1; and / or,

[0039] The second preset mass ratio is B, where 1 / 3 ≤ B ≤ 1 / 2.

[0040] Optionally, after the grouting pipe is installed at the burial point, the method further includes:

[0041] S901, providing I-beams;

[0042] S902. The I-beams are placed inside the door and window openings of the ancient building to reinforce the door and window openings.

[0043] Optionally, the tunneling parameters of the tunnel boring machine are adjusted according to the tunneling strategy:

[0044] Adjust the cutterhead rotation speed of the tunnel boring machine to a first preset range, where the first preset range is C, 0.8 rpm ≤ C ≤ 1.0 rpm; and / or,

[0045] Adjust the cutterhead torque of the tunnel boring machine to a second preset range, where the second preset range is D, 1200 kN·m ≤ D ≤ 3800 kN·m; and / or,

[0046] Adjust the tunnel boring machine's advance speed to a third preset range, where the third preset range is E, 20mm·min≤E≤30mm·min.

[0047] This invention proposes a method for protecting ancient buildings when a tunnel boring machine (TBM) passes through them. The method includes determining the impact range of the TBM's tunnel excavation on the ancient buildings, then identifying pipe-laying points within this range, and finally installing grouting pipes at these points. During the TBM's passage through the ancient buildings, the method monitors the settlement parameters of the buildings, determines a grouting strategy based on these parameters, and controls a grouting device to inject grout into the ground through the grouting pipes to maintain the stability of the ancient building complex's foundation. Then, based on the settlement parameters, a tunneling strategy is determined, and the TBM's tunneling parameters are adjusted accordingly. Finally, the method controls the TBM's passage through the ancient buildings based on these tunneling parameters. This minimizes the impact of the TBM tunneling on the ancient buildings, achieving the goal of protecting the ancient building complex. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0049] Figure 1 This is a first flowchart illustrating an embodiment of the method for protecting ancient buildings when a tunnel boring machine passes through ancient buildings provided by the present invention.

[0050] Figure 2 This is a second flowchart illustrating an embodiment of the method for protecting ancient buildings when a tunnel boring machine passes through ancient buildings provided by the present invention.

[0051] Figure 3 This is a third flowchart illustrating an embodiment of the method for protecting ancient buildings when a tunnel boring machine passes through ancient buildings provided by the present invention.

[0052] Figure 4 This is a fourth flowchart of an embodiment of the method for protecting ancient buildings when a tunnel boring machine passes through ancient buildings provided by the present invention.

[0053] Figure 5 This is a fifth flowchart illustrating an embodiment of the method for protecting ancient buildings when a tunnel boring machine passes through ancient buildings provided by the present invention.

[0054] Figure 6 This is a sixth flowchart illustrating an embodiment of the method for protecting ancient buildings when a tunnel boring machine passes through ancient buildings provided by the present invention.

[0055] Figure 7 This is a seventh flowchart illustrating an embodiment of the method for protecting ancient buildings when a tunnel boring machine passes through ancient buildings provided by the present invention.

[0056] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0058] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0059] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0060] When tunnel boring machines (TBMs) are excavating tunnels, they inevitably affect buildings on the ground. In particular, when TBMs pass through ancient building complexes, how to protect the ancient building complexes on the ground when the TBM passes through the strata where the ancient building complexes are located has become an urgent problem to be solved in tunnel construction.

[0061] To address the aforementioned problems, this invention proposes a method for protecting ancient buildings when a tunnel boring machine (TBM) passes through them. The aim is to provide a method for protecting the ancient buildings on the ground when a TBM passes beneath an ancient building complex. Figure 1 to

[0062] Please refer to Figure 1 , Figure 1 This is a first flowchart illustrating an embodiment of the method for protecting ancient buildings when a tunnel boring machine (TBM) passes through ancient buildings provided by the present invention. The method for protecting ancient buildings when a TBM passes through ancient buildings includes the following steps:

[0063] S10. Determine the range of impact of tunnel excavation by the tunnel boring machine on ancient buildings.

[0064] S20. After determining the pipe laying point within the affected area, grouting pipes are laid at the pipe laying point.

[0065] S30. When the tunnel boring machine passes through an ancient building, monitor the settlement parameters of the ancient building.

[0066] S40. Determine the grouting strategy based on the settlement parameters, and control the grouting device to inject grout into the formation through the grouting pipe according to the grouting strategy.

[0067] S50. Determine the tunneling strategy based on the settlement parameters, adjust the tunneling parameters of the tunnel boring machine based on the tunneling strategy, and control the tunnel boring machine to pass through ancient buildings based on the tunneling parameters.

[0068] This invention proposes a method for protecting ancient buildings when a tunnel boring machine (TBM) passes through them. The method includes determining the impact range of the TBM's tunnel excavation on the ancient buildings, then identifying pipe-laying points within this range, and finally installing grouting pipes at these points. During the TBM's passage through the ancient buildings, the method monitors the settlement parameters of the buildings, determines a grouting strategy based on these parameters, and controls a grouting device to inject grout into the ground through the grouting pipes to maintain the stability of the ancient building complex's foundation. Then, based on the settlement parameters, a tunneling strategy is determined, and the TBM's tunneling parameters are adjusted accordingly. Finally, the method controls the TBM's passage through the ancient buildings based on these tunneling parameters. This minimizes the impact of the TBM tunneling on the ancient buildings, achieving the goal of protecting the ancient building complex.

[0069] Please refer to Figure 2 , Figure 2 This is a second flowchart illustrating an embodiment of the method for protecting ancient buildings when a tunnel boring machine (TBM) passes through ancient buildings provided by the present invention. The step of determining the impact range of the TBM tunnel excavation on the ancient building includes:

[0070] S101. Calculate the width of the impact on the ground when the tunnel boring machine excavates the tunnel, based on the tunnel depth and the internal friction angle of the surrounding strata.

[0071] S102. Compare the width of the influence with the width of the ancient building to determine the range of influence of the tunnel excavation by the tunnel boring machine on the ancient building.

[0072] In this embodiment, the impact range of tunnel excavation on the ground can be calculated using an empirical formula on the impact of tunnel excavation on ground settlement. This impact range can then be compared with the area of ​​ancient buildings to obtain the range of impact of tunnel excavation on ancient buildings.

[0073] Furthermore, the extent of the impact of tunnel excavation on the ground can be determined using the formula... The calculation is performed, where W is the width of the impact on the ground when the tunnel boring machine excavates the tunnel, Z is the tunnel depth, and β is the internal friction angle of the strata surrounding the tunnel.

[0074] Please refer to Figure 3 , Figure 3 This is a third flowchart illustrating an embodiment of the ancient building protection method provided by the present invention for tunnel boring machines passing through ancient buildings. The method involves embedding a grouting pipe at the burial point, and includes the following steps:

[0075] S201. At the buried pipe point, a first buried pipe section is formed by drilling a hole to a first preset depth.

[0076] S202. Install the prefabricated protective wall into the first buried pipe section.

[0077] S203. Continue drilling the buried pipe hole at the first preset depth so that the installed prefabricated protective wall slowly sinks and forms a second buried pipe hole section above the prefabricated protective wall.

[0078] S204. Continue to install the prefabricated retaining wall into the second buried pipe section.

[0079] S205. Repeat steps S203 to S204 above until the embedded pipe hole is formed.

[0080] S206. Install the grouting pipe into the buried pipe hole.

[0081] In this embodiment, the installation of the grouting pipe at the pipe embedding point includes the following steps: First, a first pipe embedding section is formed by drilling a hole at the pipe embedding point to a first preset depth using a drilling rig. At the same time, in order to prevent the borehole from collapsing, a guard arm is set in the first pipe embedding section after it is formed, and the second pipe embedding section is drilled downward until the depth of the pipe embedding section can accommodate the second guard arm. At this time, the first guard arm sinks with the hole. Then, the above steps are repeated until the pipe embedding hole is completely formed. Finally, the grouting pipe is installed into the pipe embedding hole.

[0082] It should be explained that the value of the first preset depth should be determined based on the rock strata where the ancient building complex is located and the depth of the tunnel. If the rock strata where the ancient building complex is located is prone to collapse, then the first preset depth can be one-fifth of the length of the buried pipe hole. If the rock strata where the ancient building complex is located is not prone to collapse and the tunnel is relatively deep from the ancient building complex, then the preset depth can be one-third of the length of the buried pipe hole.

[0083] Please refer to Figure 4 , Figure 4 This is a fourth process diagram of an embodiment of the ancient building protection method provided by the present invention when a tunnel boring machine passes through an ancient building. Before installing the grouting pipe into the buried pipe hole, the method further includes:

[0084] S2071. Prepare hydraulic pump, hydraulic hoses, multiple sleeve valve hoses, multiple PVC hoses, fly ash, bentonite, cement and water;

[0085] S2072. The shell material is prepared by mixing fly ash, bentonite, cement and water.

[0086] S2073. Before the casing material solidifies, the casing material is injected from the bottom of the buried pipe hole through the hydraulic pump and hydraulic pipe until the casing material is injected out from the opening of the buried pipe hole.

[0087] S2073. Connect each of the sleeve valve pipes through the polyvinyl chloride pipe to form the grouting pipe.

[0088] In this embodiment, fly ash, bentonite, cement, and water are mixed to form a casing material. Before the casing material solidifies, it is injected into the bottom of the borehole using a hydraulic pump and hydraulic pipe until it exits through the borehole opening. This ensures that the casing material completely replaces the soil within the borehole. The casing material effectively fills the gap between the sleeve valve pipe and the surrounding rock strata, preventing grout leakage during grouting. Simultaneously with the casing material's penetration into the borehole, the sleeve valve pipe can be assembled. Due to the high cost of mass-produced sleeve valve pipes, polyvinyl chloride (PVC) pipes (PP pipes) are typically used to connect them to save costs.

[0089] Please refer to Figure 5 , Figure 5 This is a fifth process diagram of an embodiment of the method for protecting ancient buildings when a tunnel boring machine passes through ancient buildings provided by the present invention. After connecting each of the sleeve valve pipes through the polyvinyl chloride pipe to form the grouting pipe, the method further includes:

[0090] S2074, Provide sealing plugs;

[0091] S2075. A sealing plug is provided at the end of the grouting pipe facing the bottom wall of the buried pipe hole;

[0092] S2076. Water is introduced into the grouting pipe through the end of the grouting pipe away from the bottom wall of the buried pipe hole.

[0093] In this embodiment, before the grouting pipe is embedded in the hole, it needs to be filled with clean water to ensure that the grouting pipe will not bend when it comes into contact with the casing material. Therefore, firstly, a sealing plug is used to block one side of the grouting pipe, and then clean water is poured into the grouting hole to improve the strength of the grouting pipe. Finally, the grouting pipe is embedded in the hole. This ensures that the grouting pipe will not deform and break due to the pressure of the casing material after being embedded in the hole. When grouting begins, the pressure in the grouting hole can break through the sealing plug and inject grout downwards.

[0094] Please refer to Figure 6 , Figure 6 This is a sixth flowchart illustrating an embodiment of the ancient building protection method provided by the present invention when a tunnel boring machine passes through an ancient building. Before determining the grouting strategy based on the settlement parameters and controlling the grouting device to inject grout into the stratum through the grouting pipe according to the grouting strategy, the method further includes:

[0095] S801 provides water, cement ash, and water glass;

[0096] S802. Prepare the water and cement ash according to the first preset mass ratio to form cement slurry;

[0097] S803. The cement slurry and the water glass are prepared according to the second preset mass ratio to form the slurry.

[0098] This embodiment provides a method for preparing a slurry, which is formed by mixing water, cement ash, and water glass. The water and cement ash support the slurry's bulk, while the water glass acts as a coagulant to accelerate its solidification. Further, the water and cement ash are prepared according to a first preset mass ratio to form a cement slurry, and the cement slurry and water glass are prepared according to a second preset mass ratio to form the final slurry. Further, the first preset mass ratio is A, where 4 / 5 ≤ A ≤ 1, with A = 1 yielding the best results; the second preset mass ratio is B, where 1 / 3 ≤ B ≤ 1 / 2, with B = 1 / 2 yielding the best results.

[0099] Please refer to Figure 7 , Figure 7 The seventh flowchart of an embodiment of the ancient building protection method for tunnel boring machines passing through ancient buildings provided by the present invention includes, after the grouting pipe is buried at the burial point, the method further includes:

[0100] S901, providing I-beams;

[0101] S902. The I-beams are placed inside the door and window openings of the ancient building to reinforce the door and window openings.

[0102] Understandably, in addition to stabilizing the foundation of ancient buildings, the reinforcement of ancient buildings can also stabilize weak and easily collapsed areas such as city gates or window openings. Therefore, in this embodiment, after the grouting pipe is buried at the pipe burial point, it also includes providing I-beams and placing the I-beams in the door and window openings of the ancient buildings to reinforce them. In this way, the I-beams are used to support the door and window openings of the ancient buildings, improving the structural strength of the ancient buildings and reducing the impact on the door and window openings of the ancient buildings during tunnel boring machine excavation.

[0103] To minimize the impact of tunnel boring machine (TBM) excavation on ancient buildings, in one embodiment of the present invention, the excavation parameters of the TBM are adjusted according to the excavation strategy. This includes adjusting the TBM cutterhead rotation speed to a first preset range, where the first preset range is C (0.8 rpm ≤ C ≤ 1.0 rpm), adjusting the TBM cutterhead torque to a second preset range, where the second preset range is D (1200 KN·m ≤ D ≤ 3800 KN·m), and adjusting the TBM advance speed to a third preset range, where the third preset range is E (20 mm·min ≤ E ≤ 30 mm·min). This reduces the impact of TBM excavation on the ground.

[0104] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for protecting an ancient building when a tunneling machine passes through the ancient building, characterized in that, The method comprises the following steps: S10, determining an influence interval of a tunneling shield machine on an ancient building; S20, after determining a pipe-embedding point in the influence interval, embedding a grouting pipe at the pipe-embedding point; S30, monitoring a settlement parameter of the ancient building when the tunneling shield machine passes through the ancient building; S40, determining a grouting strategy according to the settlement parameter, and controlling a grouting device to inject grout into a stratum through the grouting pipe according to the grouting strategy; S50, determining a tunneling strategy according to the settlement parameter, adjusting a tunneling parameter of the tunneling shield machine according to the tunneling strategy, and controlling the tunneling shield machine to pass through the ancient building according to the tunneling parameter; The determination of the influence interval of the tunneling shield machine on the ancient building comprises: S101, calculating an influence width on the ground when the tunneling shield machine tunnels according to a tunnel depth and an internal friction angle of a stratum around the tunnel; S102, comparing the influence width with a width of the ancient building to determine the influence interval of the tunneling shield machine on the ancient building; The influence width on the ground when the tunneling shield machine tunnels is calculated according to the tunnel depth and the internal friction angle of the stratum around the tunnel by the following formula: ； Wherein, W is the influence width on the ground when the tunneling shield machine tunnels; Z is the tunnel depth; β is the internal friction angle of the stratum around the tunnel; In the adjustment of the tunneling parameter of the tunneling shield machine according to the tunneling strategy: The rotating speed of a cutter head of the tunneling shield machine is adjusted to a first preset range, and the first preset range is C, 0.8 rpm≤C≤1.0 rpm; The torque of the cutter head of the tunneling shield machine is adjusted to a second preset range, and the second preset range is D, 1200 KN·m≤D≤3800 KN·m; The advancing speed of the tunneling shield machine is adjusted to a third preset range, and the third preset range is E, 20 mm·min≤E≤30 mm·min.

2. The method of protecting an ancient building during a tunneling machine crossing of the ancient building of claim 1, wherein, The embedding of the grouting pipe at the pipe-embedding point comprises the following steps: S201, drilling a first pipe-embedding hole section at a first preset depth at the pipe-embedding point; S202, installing a prefabricated casing into the first pipe-embedding hole section; S203, continuing to drill the first pipe-embedding hole section at the first preset depth, so that the installed prefabricated casing slowly sinks, and a second pipe-embedding hole section is formed above the prefabricated casing; S204, continuing to install a prefabricated casing into the second pipe-embedding hole section; S205, repeating the steps of S203-S204 until the pipe-embedding hole is formed; S206, installing the grouting pipe into the pipe-embedding hole.

3. The method of claim 2, wherein the shield tunneling machine is a tunnel boring machine. Before the installation of the grouting pipe into the pipe-embedding hole, further comprising: S2071, preparing a hydraulic pump, a hydraulic pipe, a plurality of sleeve valve pipes, a plurality of polyvinyl chloride pipes, fly ash, bentonite, cement, and water; S2072, stirring the fly ash, bentonite, cement, and water to make a casing material; S2073, before the casing material solidifies, pouring the casing material from the bottom of the pipe-embedding hole through the hydraulic pump and the hydraulic pipe until the casing material is poured out from the opening of the pipe-embedding hole; S2073, connecting each sleeve valve pipe through the polyvinyl chloride pipe to form the grouting pipe.

4. The method of claim 3, wherein the shield tunneling machine is a tunnel boring machine. The connecting each sleeve valve pipe through the polyvinyl chloride pipe to form the grouting pipe further comprises: S2074, providing a sealing plug; S2075, providing a sealing plug at the end of the grouting pipe towards the bottom wall of the buried pipe hole; S2076, introducing clean water into the grouting pipe through the end of the grouting pipe away from the bottom wall of the buried pipe hole.

5. The method of protecting an ancient building during a tunneling machine crossing of the ancient building of claim 1, wherein, The determining a grouting strategy according to the settlement parameter, and controlling a grouting device to inject slurry into the stratum through the grouting pipe according to the grouting strategy further comprises: S801, providing water, cement ash and water glass; S802, configuring the water and cement ash according to a first preset mass ratio to form cement slurry; S803, configuring the cement slurry and the water glass according to a second preset mass ratio to form the slurry.

6. The method of protecting an ancient building during a tunneling machine crossing of the ancient building of claim 5, wherein, The first preset mass ratio is A, and 4 / 5≤A≤1; The second preset mass ratio is B, and 1 / 3≤B≤1 / 2.

7. The method of protecting an ancient building during a tunneling machine crossing of the ancient building of claim 1, wherein, After the grouting pipe is buried at the buried pipe point, further comprising: S901, providing a H-shaped steel; S902, arranging the H-shaped steel in the door hole and window hole of the ancient building to reinforce the door hole and window hole of the ancient building.

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