Movable squatting beam counter-force pushing sliding rail type TBM stepping system

Abstract

The utility model discloses a movable squat beam counter-force pushing slide rail type TBM stepping system, which relates to the technical field of full-section tunnel boring and comprises a track roadbed for hoisting and transporting rear corollary equipment, a main engine starting platform roadbed and an inclined shaft slope ramp in-tunnel slide rail roadbed. The cross section of the main engine starting platform roadbed is of an isosceles trapezoid structure, a concave arc-shaped inverted arch is arranged on the top plane of an isosceles trapezoid, and shoulders are symmetrically arranged on the two sides of the inverted arch. A slide rail and a guide rail are arranged in the inverted arch; pile holes are uniformly formed in the inner side of the slide rail along the longitudinal direction of the rail; the TBM host is arranged on the inverted arch inner sliding rail; the tail end of the TBM main machine is connected with a stepping oil cylinder, the stepping oil cylinder acts on a squatting beam counter-force beam, and the squatting beam counter-force beam is inserted into a pile hole. According to the utility model, the immature mine TBM launching construction method technology at present can be completed, and the engineering technical problems of poor reliability, low efficiency, high cost and the like in the existing construction technology are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of full-section tunnel excavation, in particular to a movable squat beam reaction-force jacking slide rail type TBM stepping system. Background Art

[0002] Tunnel Boring Machine (TBM) tunnel or roadway construction, a full-section tunneling technology, has rapidly developed in recent years in my country's transportation, water conservancy, and mining construction projects, becoming a hot topic in geotechnical engineering construction. The large-scale use of TBMs in mining construction is also a general trend, including mine construction, mining area roadways, and underground transportation tunnels. Inclined shafts or ramps are key elements of mine shaft and roadway development and dominate the mine construction phase.

[0003] The start of TBM in a mine is the first step in large-scale mining projects such as mine inclined shafts, ramps, and underground tunnels. It is also a temporary project. It should be designed systematically based on the special conditions and needs of mine construction to gradually form a standardized temporary project, thereby promoting the development of the mine TBM technology system.

[0004] TBM stepping processes or technologies are usually related to engineering conditions such as TBM starting or transfer construction. Different fields and projects have different types or methods of TBM stepping. There are many processes for TBM or shield stepping construction, such as vehicle-mounted, skateboard, tank, tunneling, and so on. The slide rail stepping process is a more common choice among these stepping processes. Its principle is to place the TBM main machine and its subsequent supporting equipment on a linear track and slide them to the target working surface. Its advantage is that the friction resistance is low due to the contact between steel and steel rails, making it very easy to adopt. However, there are application limitations such as the continuous track laying elevation and high track foundation requirements. There are also problems such as a lack of professional supporting equipment and slow stepping speed. As a result, there are scientific management issues such as poor construction reliability, low construction efficiency, and unreasonable cost. Utility Model Content

[0005] In order to solve the above technical problems existing in the prior art, the embodiment of the present invention provides a movable squat beam reaction push slide rail type TBM stepping system. The technical solution is as follows:

[0006] On the one hand, a movable squat beam reaction-pushing slide rail type TBM stepping system is provided, comprising: a rear supporting equipment hoisting movable track roadbed, a main engine starting platform roadbed and a slide rail roadbed in the inclined shaft ramp; wherein the cross section of the main engine starting platform roadbed is based on an isosceles trapezoidal structure, an arc-shaped concave inverted arch is set on the top surface of the isosceles trapezoid, and shoulders are symmetrically provided on both sides of the inverted arch; the inverted arch matches the arc at the bottom end of the cutter head of the TBM main engine; a slide rail and a guide rail are set inside the inverted arch, and the inner side of the slide rail moves along the longitudinal direction according to the oil cylinder. Pile holes are evenly arranged along the entire process, and the pile holes are symmetrically arranged along the center line of the slide rail; the TBM main machine is erected in the invert arch, on the slide rail and the guide rail; the tail end of the TBM main machine is connected to one end of the stepping cylinder at the slide rail position, and the other end of the stepping cylinder acts on the squat beam reaction beam, and the squat beam reaction beam is inserted into the pile hole; a removable anti-slip pile is arranged in the pile hole closest to the front end of the TBM main machine; the squat beam reaction beam is composed of a short beam with a rectangular thin-walled section and two standing piles with a rectangular thin-walled section welded together.

[0007] Furthermore, the main engine starting platform roadbed takes the main engine starting platform rail surface as the highest point and smoothly transitions to the highest rail surface elevation of the inclined shaft ramp tunnel entrance; the main engine starting platform roadbed and the main engine starting platform rail surface elevation are extended by the rear supporting equipment hoisting mobile track roadbed and road elevation.

[0008] Furthermore, the main engine starting platform roadbed is made of cast-in-place concrete, and double-layer steel bars are arranged at the bottom to form a reinforced concrete extended foundation structure.

[0009] Furthermore, the bottom width of the main engine starting platform roadbed meets the following conditions:

[0010]

[0011] The bottom width of the mobile track subgrade for hoisting of the ancillary equipment shall meet the following conditions:

[0012]

[0013] Among them, W b is the bottom width of the main engine starting platform roadbed, W hb G is the bottom width of the track subgrade for the auxiliary equipment hoisting. m is the weight of the TBM mainframe, G b , G hb are the weight of the platform and the back-up concrete foundation, f k L is the bearing capacity of the foundation of the host starting platform or the supporting roadbed. b is the length of the main engine starting platform roadbed, G h , G hb 、fhk 、L h They are respectively the weight of the supporting bicycle, foundation weight, foundation bearing capacity and bicycle length.

[0014] Furthermore, the slide rail is arranged on the inner side of the guide rail; the row spacing of the slide rail includes:

[0015] S r =2(R m +δ)×sin(α)

[0016] Among them, S r is the row spacing, R m is the radius of the TBM mainframe, δ is the gap between the cutter head of the TBM mainframe and the foundation surface, and α is the center angle of the inner slide rail.

[0017] Furthermore, the shoulder width of the main engine starting platform roadbed meets the following conditions:

[0018]

[0019] Among them, W d is the shoulder width of the shoulder, W b H is the bottom width of the main engine starting platform roadbed, b is the platform height of the main engine starting platform roadbed, and β is the increased angle of the outer slide rail.

[0020] Furthermore, a lug for connecting a stepping cylinder is welded on the side of the short beam at the standing pile position.

[0021] The embodiment of the utility model provides a movable squat beam reaction-pushing slide rail type TBM stepping system, which adopts a trapezoidal platform with an inverted arch table to provide a reliable and economical reinforced concrete expansion foundation for the TBM main machine to start; through the design of the squat beam reaction beam, a quick-installed mobile stepping power structure is provided, which is simple and convenient, and has fast construction. It can complete the currently immature mining TBM starting method technology and solve the engineering and technical problems of existing construction technology such as poor engineering construction reliability, low construction efficiency and high cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1This is a schematic diagram of the overall structure of a movable squat beam reaction-pushing slide rail type TBM stepping system provided by an embodiment of the utility model;

[0024] Figure 2 This is a front cross-sectional schematic diagram of a main engine launching platform roadbed provided by an embodiment of the utility model;

[0025] Figure 3 This is a top view of a movable squat beam reaction-pushing slide rail type TBM stepping system provided by an embodiment of the utility model;

[0026] Figure 4 This is a front cross-sectional schematic diagram of a rear supporting equipment hoisting track roadbed provided by an embodiment of the utility model;

[0027] Figure 5 This is a front view of a squat beam reaction beam provided by an embodiment of the utility model;

[0028] Figure 6 It is a side view of a squat beam reaction beam provided by an embodiment of the utility model;

[0029] Figure 7 This is a top view of a squat beam reaction beam provided by an embodiment of the utility model;

[0030] Figure 8 This is a flow chart of a movable squat beam reaction-pushing slide rail type TBM stepping method provided by an embodiment of the utility model.

[0031] In the figure: 1. Mobile track roadbed for hoisting of rear supporting equipment, 2. Roadbed for the starting platform of the main machine, 3. Sliding rail roadbed in the inclined shaft and ramp, 4. TBM main machine, 5. Slide rail, 6. Pile hole, 7. Squatting beam reaction beam, 8. Stepping cylinder, 9. Short beam, 10. Standing pile, 11. Hanging lug, 12. Anti-slip pile, 13. Guide rail. DETAILED DESCRIPTION

[0032] The technical solution of the present utility model is described below in conjunction with the accompanying drawings.

[0033] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as an "exemplary" in the present invention should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of the word "exemplary" is intended to present concepts in a concrete manner. Furthermore, in the embodiments of the present invention, the expression "and / or" can mean both or either of the two.

[0034] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0035] Example 1

[0036] Figure 1 This is a schematic diagram of the overall structure of a movable squat beam reaction push slide rail type TBM stepping system provided according to an embodiment of the utility model. Figure 1 As shown, the system includes: a rear supporting equipment hoisting mobile track roadbed 1, a main engine starting platform roadbed 2 and a inclined shaft ramp tunnel sliding track roadbed 3.

[0037] Figure 2 This is a front cross-sectional schematic diagram of a host launching platform roadbed provided according to an embodiment of the present utility model. Figure 2 As shown, the cross section of the main machine starting platform roadbed 2 is based on an isosceles trapezoidal structure, with an arc-shaped concave inverted arch set on the top plane of the isosceles trapezoid, and shoulders are symmetrically provided on both sides of the inverted arch; the inverted arch matches the arc at the bottom end of the cutterhead of the TBM main machine 4.

[0038] In an optional implementation provided by an embodiment of the present invention, the cross-section of the main engine starting platform roadbed is a 45° isosceles trapezoid after the area difference of the TBM main engine cutterhead is collected, that is, the main engine starting platform roadbed is a circular arc (i.e., an inverted arch) of the cutterhead circle plus symmetrical shoulders on both sides, the bottom surface of the pedestal is flat, and the two sides are sloped at 45°; the main engine starting platform roadbed is buried at a depth of 300-400mm, and the main engine starting platform roadbed takes the main engine starting platform rail surface as the highest point, and smoothly transitions to the highest rail surface elevation of the inclined shaft ramp tunnel; the main engine starting platform roadbed and the main engine starting platform rail surface elevation are extended to the supporting equipment hoisting mobile track roadbed and road elevation.

[0039] Figure 3 This is a top view of a movable squat beam reaction push slide rail type TBM stepping system provided according to an embodiment of the utility model. Figure 3 As shown, a slide rail 5 and a guide rail 13 are provided inside the inverted arch, and pile holes 6 are evenly arranged on the inner side of the slide rail 5 along the longitudinal direction according to the cylinder stroke. The pile holes 6 are symmetrically arranged along the center line of the slide rail; the TBM main machine 4 is mounted inside the inverted arch, on the slide rail 5 and the guide rail 13.

[0040] Specifically, such as Figure 1 As shown, the tail end of the TBM main machine 4 is connected to one end of the stepping cylinder 8 at the position of the slide rail 5, and the other end of the stepping cylinder 8 acts on the squatting beam reaction beam 7, and the squatting beam reaction beam 7 is inserted into the pile hole 6.

[0041] Alternatively, as Figure 1 As shown, a removable anti-slip pile 12 is arranged in the pile hole 6 closest to the front end of the TBM main machine 4.

[0042] In an optional implementation provided by an embodiment of the present utility model, the main engine starting platform roadbed is made of cast-in-place concrete, and double-layer steel bars are arranged at the bottom to form a reinforced concrete extended foundation structure.

[0043] Figure 4 This is a front cross-sectional diagram of a rear supporting equipment hoisting track roadbed according to an embodiment of the present utility model. Figure 4 As shown, the track subgrade for hoisting supporting equipment can be based on the minimum thickness H of the bottom of the starting pedestal. a and load width W hb , reinforced concrete extended foundation, buried depth 200-400mm.

[0044] In such Figure 3 In the top view shown, the foundation width W of the main engine starting platform roadbed b With length L b , depends on the TBM mainframe weight G m , concrete foundation weight G b And the foundation bearing capacity f at the installation location k :

[0045]

[0046] Where: R b is the foundation surface stress, unit is MPa.

[0047] Preferably, the bottom width of the roadbed of the host launching platform meets the following conditions:

[0048]

[0049] The bottom width of the track subgrade for hoisting of the supporting equipment must meet the following conditions:

[0050]

[0051] Among them, W b is the bottom width of the main engine starting platform roadbed, W hb The bottom width of the track subgrade for the subsequent supporting equipment hoisting, G m is the weight of the TBM mainframe, G b , G hb are the weight of the platform and the back-up concrete foundation, f k L is the foundation bearing capacity of the host starting platform or the subsequent supporting roadbed location, b is the length of the roadbed of the host starting platform, G h , G hb 、f hk 、L h They are respectively the weight of the supporting bicycle, foundation weight, foundation bearing capacity and bicycle length.

[0052] Specifically, such as Figure 2 As shown, the slide rail 5 is arranged on the inner side of the guide rail 13; the spacing of the slide rail 5 includes:

[0053] S r =2(R m +δ)×sin(α)

[0054] Among them, S r is the row spacing, R m is the radius of the TBM mainframe, δ is the gap between the cutter head of the TBM mainframe and the foundation surface, and α is the center angle of the slide rail.

[0055] The two pile holes are arranged symmetrically, with the center of the pile hole 750mm away from the driving track. Therefore, the distance between the pile holes is:

[0056] S h =2(R m +δ)×sin(α)-1500

[0057] Specifically, the shoulder width of the main engine launching platform roadbed must meet the following conditions:

[0058]

[0059] Among them, W d is the shoulder width, W b H is the bottom width of the main engine starting platform roadbed, b is the platform height of the host starting platform roadbed, and β is the increased angle of the outer slide rail.

[0060] The guide rail 13 assists the main machine to step to the hole, plays an auxiliary guiding role, and extends from the guide platform to the hole.

[0061] Pile holes should be reserved on the guide platform foundation and arranged symmetrically along the center line of the track to serve the longitudinal advancement of the TBM and facilitate the installation of the squat beam reaction beam and step-by-step advancement operation. However, the foundation should be safe and the force should be reasonable. The distance between the pile holes in the longitudinal direction of the track is called the step-by-step distance S. s , determined by the stroke of the stepping cylinder, generally 1300mm.

[0062] Figure 5 This is a front view of a squat beam reaction beam provided according to an embodiment of the utility model. Figure 6 This is a side view of a squat beam reaction beam provided according to an embodiment of the utility model. Figure 7 This is a top view of a squat beam reaction beam provided according to an embodiment of the present utility model. Figure 5-7 As shown, the squat beam reaction beam 7 is composed of a short beam 9 with a rectangular thin-walled cross-section and two standing piles 10 with a rectangular thin-walled cross-section welded together; wherein, a hanging ear 11 for connecting the stepping cylinder 8 is welded on the side of the short beam 9 at the position of the standing pile 10.

[0063] In the embodiment of the present invention, the rectangular cross-section of the squat beam reaction beam 7 is simple to process, which is convenient for standardized design and calculation; the thin-walled steel structure is easy to reduce weight and lightweight, and is convenient for mobile construction.

[0064] In an optional implementation provided by the embodiment of the present utility model, the main parameters of the squat beam reaction beam 7 are as follows:

[0065] L be — beam length, in mm, preferably 3380 mm; W be —Beam width, in mm, preferably 250 mm; H be —Beam height, in mm, preferably 630 mm; W hs —Width between pile holes, in mm, preferably 20-20 mm; L hs —Length between pile holes, in mm, preferably 3000 mm; H h —pile hole depth, in mm, preferably 631 mm; W p —side length of the standing pile, in mm, preferably 300 mm; H p —Standing depth, unit: mm, preferably 632mm.

[0066] In an optional implementation provided by the embodiment of the present invention, the load and constraint conditions of the squat beam reaction beam 7 are as follows:

[0067] (1) Stepper cylinder starting force F sp :

[0068] Starting force F s and the self-weight sliding force G s The sum is greater than the static friction F sf :

[0069] F sp +G sl ≥F sf →F sp ≥F sf -G sl

[0070] (2) General propulsion force F after the stepping cylinder is started np :

[0071] General propulsion force F np and the self-weight sliding force G s The sum is greater than the sliding friction F sl :

[0072] F np +G sl ≥F slf →F np ≥F sl -G slf

[0073] Among them, the host's own sliding force: G sl =G*sin(arctan(i));

[0074] Host normal force: G n =G*cos(arctan(i));

[0075] Static friction of the main engine: F sf =F n μ stf ;

[0076] Host sliding friction: F slf =F n μ sl f;

[0077] The starting thrust calculation of the steel-steel slide stepping cylinder is shown in Table 1:

[0078] Table 1 Calculation of the thrust of the steel-steel slide cylinder of the foundation TBM at different downward slopes

[0079]

[0080] The starting thrust calculation of the steel-concrete slide stepping cylinder is shown in Table 2:

[0081] Table 2 Calculation table of thrust of steel-concrete sliding static friction starting cylinder

[0082]

[0083] Table 2 can be used to set up mixed concrete-rail sliding in each continuous downhill section to solve the risk of rolling stock.

[0084] In an optional implementation provided by the embodiment of the present invention, the force analysis of the short beam and the standing pile is as follows:

[0085] (1) Calculation of stepping cylinder thrust:

[0086] The squat beam reaction beam is made of welded steel plates. The stepping cylinder acts directly at the center of the pile. The rectangular steel squat beam is calculated according to the shear mechanics model. Four jacks are designed. Considering the adoption of safety measures, the concrete-assisted friction method is used. The maximum static friction push is taken to calculate the thrust of each jack cylinder.

[0087]

[0088] 200 / 160-1500x4 stepper cylinders are selected, each with a maximum thrust of 100 tons and a maximum stroke of 1500mm.

[0089] (2) Calculation of shear force of squat beam reaction beam standing pile:

[0090] According to the symmetry of the squat beam reaction beam structure, the forces acting on the squat beam reaction beam are all near the pile support twice, the transverse bending moment can be ignored, and the squat beam section is designed according to shear resistance. The maximum shear force Q of the squat beam is b_max =F′ sp .

[0091] The maximum shear force calculation of the pile is as follows: the height of the buried section of the pile in the hole and the upper section of the pile are equal, which is H p , the maximum shear force is the maximum force R at the top of the hole p _max, calculated based on the moment balance at the bottom of the hole:

[0092]

[0093] Q p_max =4F′ sp

[0094] (3) Calculation of wall thickness of short beam and standing pile sections:

[0095] The wall thickness calculation of short beams and pile rectangular tube sections can be designed and calculated based on the maximum shear stress:

[0096]

[0097] From this, the wall thickness calculation formula of the rectangular tube beam can be obtained:

[0098]

[0099] Where: [τ s ]----Required shear strength of rectangular tube wall material / MPa;

[0100] I z ----The moment of inertia of the rectangular tube wall cross section about the neutral axis;

[0101] --The static moment of the area on one side of the neutral axis of the cross section about the neutral axis

[0102] For a squat beam with a rectangular tube cross-section, there are neutral moments of inertia and area moments of statics:

[0103]

[0104] For the square tube cross-section standing pile, there are neutral moment of inertia and area moment of static:

[0105]

[0106] From this we can see that the parameter δ p , δ b Implicit in the formula, a simple calculation method can be used by empirical trial calculation.

[0107] (4) Pile hole depth and hole wall support thickness:

[0108] The hole depth of the standing pile is 1.2 times the thickness of the foundation. Since concrete cannot bear the concentrated reaction force of jacking, the pile hole is supported by steel plates. The tolerance between the inner size of the pile hole and the outer size of the steel pile is 1 to 2 mm, and the thickness of the steel plate can be equal.

[0109] In an optional implementation provided by the embodiment of the present utility model, the thickness of the roadbed base of the host launching platform is designed as follows:

[0110] Bending moment Mn per unit length of guide platform AA section A-A and shear force Q A-A :

[0111]

[0112] Maximum bending stress of AA foundation section:

[0113]

[0114] Get the foundation slab height H a :

[0115]

[0116] or:

[0117]

[0118] 2) Parameter verification and reinforcement

[0119]

[0120] Example 2

[0121] Figure 8 This is a flow chart of a movable squat beam reaction force push slide rail TBM stepping method provided by an embodiment of the utility model, which is applied to a movable squat beam reaction force push slide rail TBM stepping system provided by an embodiment of the utility model. Figure 8 As shown, the method specifically includes the following steps:

[0122] Step S802: The TBM mainframe is placed on the slide rail inside the inverted arch of the mainframe starting platform roadbed, a squat beam reaction beam is installed in the rear end pile hole of the TBM mainframe, and an anti-sliding pile is placed in front of the TBM mainframe.

[0123] Step S804: Install a stepping cylinder on the squat beam reaction beam, and connect the front end of the stepping cylinder to the rear end of the TBM mainframe.

[0124] Step S806: Push the TBM main machine forward a stepping stroke using the stepping cylinder.

[0125] Step S808, determining whether the TBM host has reached the target position; if not, executing step S810.

[0126] Step S810, lift the squat beam reaction beam and anti-slip pile, and move the subsequent supporting equipment forward one step and install the next squat beam reaction beam.

[0127] The stepping method provided in the embodiment of the present invention has the following preparations before the stepping:

[0128] 1) Before advancing, inspect the starting tunnel section. If there is any intrusion, process it in advance to prevent the shield from being unable to pass through.

[0129] 2) The accuracy of the embedded slide rails and reaction holes is very important and requires a second review.

[0130] 3) Communication in front of the cutter disc must be unobstructed, and operators and inspectors should be equipped with walkie-talkies.

[0131] 4) Maintain normal lighting, pumping and drainage in the tunnel, and avoid obstruction by the TBM shield.

[0132] In an optional implementation provided by the embodiment of the present invention, intelligent safety monitoring is added during the TBM stepping process, specifically including:

[0133] (1) Pulse electronic fences are laid along the TBM mainframe and its supporting equipment; abnormal objects and people are strictly prohibited from entering the construction area.

[0134] (2) Set up TBM attitude parameter (direction, inclination) reading instrument; and 360° monitoring video.

[0135] (3) At the end of each step of the process, each shift shall have a dedicated person to operate the wedge-shaped track guidance blocks and anti-slip piles.

[0136] (4) There is one main driver, video and voice control and monitoring system in front of the main head, and a full-time operator.

[0137] As can be seen from the above description, the embodiment of the present invention provides a movable squat beam reaction-pushing slide rail TBM stepping system, which has the following technical effects compared with the prior art:

[0138] Utilizing the downward slope trend and jack power greatly simplifies the stepping power requirements and reduces the project cost. The squat beam reaction beam design provides a quick-install mobile stepping power structure that is simple, convenient, and quick to construct. A trapezoidal platform with a 45° inverted arch table and double-layer steel bars at the bottom provide a solid, reliable, and economical reinforced concrete expansion foundation for the TBM launch. The dual-track arrangement on the ground guide platform and the digital attitude indicator ensure the stability of the TBM stepping guidance. Based on modern advanced sensing, electronic fencing, video, and voice control, a construction stepping safety control technology method is constructed.

[0139] It should be understood that in various embodiments of the present invention, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0140] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0141] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described equipment, devices and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0142] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0143] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0144] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A movable squat beam reaction push slide rail TBM stepping system, characterized in that: include: The supporting equipment then hoists the mobile track roadbed, the main engine starting platform roadbed and the sliding track roadbed in the inclined shaft ramp; among them, The cross section of the main machine starting platform roadbed is based on an isosceles trapezoidal structure, with an arc-shaped concave inverted arch set on the top surface of the isosceles trapezoid, and shoulders are symmetrically provided on both sides of the inverted arch; the inverted arch matches the arc at the bottom end of the cutterhead of the TBM main machine; Slide rails and guide rails are provided inside the inverted arch, pile holes are evenly arranged on the inner side of the slide rails along the longitudinal direction according to the stroke of the oil cylinder, and the pile holes are symmetrically arranged along the center line of the slide rails; the TBM mainframe is mounted inside the inverted arch and on the slide rails and guide rails; The tail end of the TBM main machine is connected to one end of a stepping cylinder at the position of the slide rail, and the other end of the stepping cylinder acts on the squat beam reaction beam, and the squat beam reaction beam is inserted into the pile hole; The squat beam reaction beam is formed by welding a short beam with a rectangular thin-walled section and two standing beams with rectangular thin-walled sections; Removable anti-slip piles are arranged in the pile hole closest to the front end of the TBM main machine.

2. The system according to claim 1, wherein: The main engine starting platform roadbed takes the main engine starting platform rail surface as the highest point and smoothly transitions to the highest rail surface elevation of the inclined shaft ramp entrance; the main engine starting platform roadbed and the main engine starting platform rail surface elevation extend to the rear supporting equipment hoisting and moving track roadbed and road elevation.

3. The system according to claim 1, wherein: The main engine starting platform roadbed is made of cast-in-place concrete, and double-layer steel bars are arranged at the bottom to form a reinforced concrete extended foundation structure.

4. The system according to claim 1, wherein: The bottom width of the main engine starting platform roadbed must meet the following conditions: The bottom width of the mobile track subgrade for hoisting of the ancillary equipment shall meet the following conditions: Among them, W b is the bottom width of the main engine starting platform roadbed, W hb G is the bottom width of the track subgrade for the auxiliary equipment hoisting. m is the weight of the TBM mainframe, G b , G hb are the weight of the platform and the back-up concrete foundation, f k L is the bearing capacity of the foundation of the host starting platform or the supporting roadbed. b is the length of the main engine starting platform roadbed, G h , G hb 、f hk 、L h They are respectively the weight of the supporting bicycle, foundation weight, foundation bearing capacity and bicycle length.

5. The system according to claim 1, wherein: The slide rail is arranged on the inner side of the guide rail; the spacing of the slide rail includes: S r =2(R m +δ)×sin(α) Among them, S r is the row spacing, R m is the radius of the TBM mainframe, δ is the gap between the cutter head of the TBM mainframe and the foundation surface, and α is the center angle of the inner slide rail.

6. The system according to claim 5, characterized in that The shoulder width of the main engine starting platform roadbed must meet the following conditions: Among them, W d is the shoulder width of the shoulder, W b H is the bottom width of the main engine starting platform roadbed, b is the platform height of the main engine starting platform roadbed, and β is the increased angle of the outer slide rail.

7. The system according to claim 1, characterized in that; A hanging lug for connecting a stepping cylinder is welded on the side surface of the short beam at the station position.

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