A method for synchronous construction of shaft lining and mid-plate

Abstract

The present application relates to the technical field of tunnel engineering, in particular to a method for synchronous construction of shaft body secondary lining and mid-plate, comprising the following steps: S1: construction preparation, installing a hoist platform and a mid-plate in the well bottom, and lifting the hoist platform to a preset height in the well bottom; S2: assembling two half-moon-shaped hydraulic templates at the well bottom, after the assembly is completed, suspending the two half-moon-shaped hydraulic templates by a plurality of stabilizers; S3: the secondary lining and the mid-plate are divided into a plurality of segments from bottom to top, binding the first segment of the secondary lining steel and the mid-plate steel from bottom to top around the periphery of the half-moon-shaped hydraulic template, pouring the first segment of the secondary lining and the mid-plate concrete and curing; S4: chiseling the top surface of the second segment of concrete, and binding the second segment of the secondary lining steel and the mid-plate steel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel engineering, in particular to a method for synchronous construction of shaft body secondary lining and mid-plate. BACKGROUND

[0002] A 22.2 km long highway tunnel in Xinjiang adopts a design scheme of 3 holes + 4 shafts, and adopts 4-shaft longitudinal ventilation in 5 sections during construction and ventilation. In order to meet the needs of air supply and exhaust in each section during operation, a "double cavity" type ventilation shaft is arranged in each shaft, a certain thickness of concrete mid-plate is arranged in the shaft, and synchronous slip-form construction technology of shaft secondary lining and mid-plate is adopted in the shaft body secondary lining of No. 1 and No. 2 shafts. After the slip-form is assembled at the bottom of the shaft, it is lifted along the climbing rod arranged on the shaft wall and the mid-plate by means of multiple ball-type jacks, and the construction efficiency of 6 m per day is achieved, the construction speed is fast, the labor intensity is small, the integrity of the shaft secondary lining and the mid-plate structure is stronger, the construction process is simplified, the construction progress is faster, the shaft construction period is shortened, and the shaft construction cost is greatly reduced. However, the investment in climbing rod materials is increased, the technical requirements during the slip-form lifting process are high, it is difficult to adjust the inclination during the slip-form lifting process, the process is complex, the appearance quality is poor, especially the slip-form lifting speed does not match the strength of the concrete, which is easy to cause the cracking of the concrete, the construction quality is difficult to guarantee, the repair cost in the later period is increased, and therefore how to solve the above-mentioned disadvantages of slip-form construction is a technical problem to be solved for the "double cavity" type ventilation shaft. SUMMARY

[0003] The present application aims to provide a method for synchronous construction of shaft body secondary lining and mid-plate, which is used to solve the above-mentioned problems.

[0004] The present application is implemented by the following technical scheme:

[0005] A method for synchronous construction of shaft body secondary lining and mid-plate, comprising the following steps:

[0006] S1: construction preparation, installing a hoist platform in the shaft bottom, lifting the hoist platform to a preset height from the shaft bottom;

[0007] S2: assembling 2 half-moon shaped hydraulic forms at the shaft bottom, after the assembly is completed, suspending the 2 half-moon shaped hydraulic forms by a plurality of stabilizers;

[0008] S3: the secondary lining and the mid-plate are divided into a plurality of sections from bottom to top, the first section of secondary lining steel bars and mid-plate steel bars in the direction from bottom to top are bound around the hydraulic forms, and the first section of secondary lining and mid-plate concrete is poured and maintained;

[0009] S4: chiseling the top surface of the first section of concrete, and binding the second section of secondary lining steel bars and mid-plate steel bars;

[0010] S5: at the first segment position, the two semi-monthly hydraulic templates are removed;

[0011] S6: the two semi-monthly hydraulic templates of the first segment are lifted to the second segment position by the stabilizer, and the mold is closed;

[0012] S7: pouring the second lining and the middle partition plate concrete of the second segment and curing;

[0013] Repeat the above steps S4 to S7, and cycle from bottom to top to complete the construction of the well body.

[0014] Further, the hanging platform in S1 includes a safety platform and a working platform arranged in sequence from top to bottom, the safety platform and the working platform are welded by a plurality of steel members, the vertical distance L between the safety platform and the working platform is greater than or equal to 5m, and the safety platform and the working platform are located above the two semi-monthly hydraulic templates, and the distance between the bottom of the working platform and the top of the two semi-monthly hydraulic templates is at least 2m.

[0015] Further, when the two semi-monthly hydraulic templates are lifted to a height of 6m from the well bottom, two semi-monthly anti-falling protection platforms are arranged at a height of 2m from the bottom of the two semi-monthly hydraulic templates, and the anti-falling protection platforms are connected with the working platform by a plurality of steel members.

[0016] Further, the hydraulic template and the well body first lining concrete form a well body second lining concrete pouring space, the straight edge steel template of the hydraulic template forms a well body middle partition plate pouring space, and the top end of the hydraulic template is uniformly provided with four lifting points, and is lifted and lowered by the stabilizer through the steel wire rope, the shaft sinking derrick, the top head sheave, and the lifting points.

[0017] Further, the outer wall diameter of the hydraulic template is D1, the design inner diameter of the well body second lining is D2, and D1-D2 is greater than or equal to 50mm, the height of the hydraulic template is H, and after the positioning and installation of the high template of the second segment are completed, the lap height with the first segment high well body second lining and middle partition plate concrete is at least 0.2m;

[0018] Each hydraulic template includes a plurality of second lining arc steel templates, middle partition plate straight edge steel templates, sharp corner steel templates, and four extension systems arranged outside the second lining arc steel templates and the middle partition plate straight edge steel templates, each extension system includes a T-shaped steel template, a plurality of limiting movable devices, a plurality of hydraulic telescopic cylinders, a plurality of steel rail sliding grooves, and arc-shaped steel templates and straight edge steel templates on the left and right sides of the T-shaped steel template;

[0019] The several steel rail grooves are arranged in the same direction, the fixed ends and the telescopic ends of the several hydraulic telescopic cylinders are arranged on the arc-shaped steel templates and the straight edge steel templates on the left and right sides of the T-shaped steel template respectively, and the T-shaped steel template is arranged close to the outer sides of the arc-shaped steel templates and the straight edge steel templates;

[0020] The concrete pouring windows are further arranged on the arc-shaped steel templates and the straight edge steel templates of the second lining of the wellbore and the middle partition plate, the window height is ≤2m from the bottom of the template, the observation port is further arranged from the bottom of the pouring window, and the plurality of attached vibrators are uniformly arranged on the arc-shaped steel templates and the straight edge steel templates of the middle partition plate.

[0021] Further, in S2, the assembly sequence of the well bottom is that the second lining arc-shaped steel template provided with a lifting point is first installed, then the second lining arc-shaped steel templates provided with a lifting point on both sides of the second lining arc-shaped steel template are sequentially installed, until the installation of the second lining arc-shaped steel template is completed, then the sharp corner template is installed, and finally the middle partition plate straight edge steel template is installed, and after the assembly is completed, the isolation agent is brushed on the contact surface of the template and the concrete.

[0022] Further, after the second segment secondary lining steel and the middle partition plate steel are bound, the two half moon-shaped hydraulic templates are lifted to the second segment by starting the stabilizer, the positioning steel wire with a hammer ball is hung at the center position of the wellbore design of the derrick crown block platform, the positioning steel wire with a hammer ball passes through the positioning steel wire reserved hole at the top of the template, and the template is accurately positioned and closed by the positioning steel wire with a hammer ball.

[0023] The closing step is as follows:

[0024] S4.1: loosen the several limiting movable devices of each telescopic system;

[0025] S4.2: connect the power supply of the hydraulic demolding electric pump and the oil pipes of the several hydraulic telescopic cylinders of the telescopic system, start the hydraulic demolding electric pump to make the several hydraulic telescopic cylinders open, and promote the second lining arc-shaped steel template and the middle partition plate straight edge steel template to move outward relative to the T-shaped steel template along the steel rail groove (18) and expand to the preset distance;

[0026] S4.3: fix the several limiting movable devices of each telescopic system and the several limiting movable devices at the top of the middle partition plate straight edge steel template;

[0027] S4.4: tighten the several jacks at the ends of the two layers of several metal tightening devices in the cavities of the two half moon-shaped hydraulic templates, and fully pave the scaffolds on the several metal tightening devices as the concrete pouring platform.

[0028] Further, S3 further includes the following sub-steps:

[0029] S3.1: The concrete is mixed at a wellhead mixing station, and after mixing is completed, the material is discharged into a bottom discharge bucket, transported vertically to a collection hopper on the working disc through a stable vehicle, and through a plurality of chutes and a plurality of distribution pipes with a diameter D to be layered and symmetrically poured into the mold, wherein D is greater than or equal to 200 mm;

[0030] S3.2: A plurality of distribution pipes are provided with a buffer device;

[0031] S3.3: When the first concrete pouring of each segment is completed, the discharge outlets of the plurality of distribution pipes are connected to a plurality of pouring windows, and when the top surface of the concrete is 500 mm away from the pouring window, the lifting platform is raised to place the discharge outlets of the plurality of distribution pipes at the top of the two semi-lunar hydraulic formworks;

[0032] S3.4: During the concrete pouring process, the main vibration is carried out by inserting the vibrating rod, and the auxiliary vibration is carried out by the attached vibrator provided on the whole body of the shaft lining integral upward hydraulic metal steel formwork.

[0033] Further, in step S5, when the strength of the concrete stone reaches a preset strength, the formwork can be removed for curing, and the removal steps are as follows:

[0034] S5.1: Loosen the movable connection device at the top end of the partition plate, and loosen the plurality of limiting movable devices at the extension system;

[0035] S5.2: Loosen the plurality of metal tensioning device end jacks in the two chambers of the two semi-lunar hydraulic formworks;

[0036] S5.3: Connect the hydraulic demolding electric pump to the power supply and the plurality of hydraulic telescopic oil cylinders on each extension system, start the hydraulic demolding electric pump to make the plurality of hydraulic telescopic oil cylinders contract, and make the second lining arc-shaped steel formwork and the partition plate straight edge-shaped steel formwork tightly adhere to the T-shaped steel formwork, and relatively move inwards along the steel rail chute to realize the removal of the formwork.

[0037] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0038] 1: After the formwork in the well is assembled, the well drilling derrick is used, the winch is used to stabilize the vehicle, the steel wire rope is lifted through the plurality of lifting points at the top of the formwork, a large amount of investment cost of climbing rod and ball type jacks is saved, the construction cost is low, the safety risk is low, and the stability is high;

[0039] 2: The plurality of hydraulic support devices are synchronously telescoped, so that the arc-shaped formwork and the straight edge-shaped steel formwork relatively move along the steel rail chute, the degree of mechanization is high, the purpose of rapid molding and demolding is achieved, the construction operation is simple, the inclination is easy to control, and the technical risk is low;

[0040] 3、The concrete strength reaches the prescribed strength requirement, and the formwork can be removed and the concrete is continuously maintained, and the cracking of the concrete after the formwork is removed is avoided, and the maintenance cost in the later period is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0041] The drawings described herein are intended to provide further understanding of the embodiments of the present application, form a part of the present application, and do not constitute a limitation on the embodiments of the present application. In the drawings:

[0042] Fig. 1 is a vertical section view of the wellbore secondary lining construction according to the present application;

[0043] Fig. 2 is a horizontal section view of the secondary lining overall up-type hydraulic metal formwork according to the present application;

[0044] Fig. 3 is an unfolded view along the outer contour of the wellbore secondary lining circular arc steel formwork according to the present application;

[0045] Fig. 4 is an unfolded view along the outer contour of the wellbore secondary lining straight edge steel formwork according to the present application;

[0046] Fig. 5 is an unfolded view along the outer contour of the wellbore secondary lining straight edge steel formwork according to the present application;

[0047] Fig. 6 is an unfolded view along the outer contour of the wellbore secondary lining circular arc steel formwork according to the present application;

[0048] Fig. 7 is a vertical section view of the movable connection device at the top of the partition according to the present application;

[0049] Fig. 8 is a plan view of the movable connection device at the top of the partition according to the present application;

[0050] Fig. 9 is a vertical section view of the telescopic system according to the present application;

[0051] Fig. 10 is a horizontal section view of the telescopic system at the wellbore secondary lining circular arc steel formwork according to the present application;

[0052] Fig. 11 is a horizontal section view of the telescopic system at the wellbore secondary lining straight edge steel formwork according to the present application.

[0053] Markings in the drawings and corresponding names of parts:

[0054] 1-well drilling derrick; 2-stable car; 3-steel wire rope; 4-head sheave; 5-primary lining concrete; 6-safety disc; 7-working disc; 8-falling protection disc; 9-hydraulic formwork; 10-secondary lining concrete; 11-tightening device; 12-hoisting point; 13-positioning steel wire reserved hole; 14-movable connection device; 15-telescopic system; 16-limiting movable device; 17-hydraulic telescopic oil cylinder; 18-steel rail sliding groove; 19-pouring window; 21-T-shaped steel formwork; 22-secondary lining circular arc steel formwork; 23-wellbore secondary lining straight edge steel formwork; 24-bottom discharge type bucket; 25-gathering hopper; 26-distributing pipe. DETAILED DESCRIPTION

[0055] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0056] Example:

[0057] like Figures 1 to 11 As shown, a method for simultaneous construction of the secondary lining and the intermediate diaphragm of a vertical shaft includes the following steps:

[0058] S1: Construction preparation, install the hoisting platform inside the well bottom, and lift the hoisting platform to the preset height from the bottom of the well;

[0059] S2: Assemble two crescent-shaped hydraulic templates 9 at the bottom of the well. After assembly, several stabilizer vehicles 2 suspend the two crescent-shaped hydraulic templates 9.

[0060] S3: The secondary lining and diaphragm are divided into several sections from bottom to top. The reinforcement bars of the first section of the secondary lining and the diaphragm are tied around the perimeter of the hydraulic formwork 9 from bottom to top. The concrete of the first section of the secondary lining and the diaphragm is poured and cured.

[0061] S4: Roughen the top surface of the first concrete section, and tie the reinforcement of the second secondary lining and the reinforcement of the middle diaphragm plate.

[0062] S5: At the first segment position, disassemble the two crescent-shaped hydraulic templates 9;

[0063] S6: Use the stabilizer 2 to lift the two crescent-shaped hydraulic templates 9 of the first section to the second section and close the mold;

[0064] S7: Pour the concrete for the second secondary lining and the middle diaphragm and cure it;

[0065] Repeat steps S4 to S7 above, and carry out the construction from bottom to top until the wellhead is reached to complete the secondary lining of the well body and the construction of the middle partition plate.

[0066] After the template well is assembled in this invention, it is lifted through multiple lifting points on the top of the template by a well drilling frame, with the help of a winch and wire rope. This saves a lot of investment costs for climbing poles and ball-bearing jacks, resulting in low construction costs, low safety risks, and high stability.

[0067] It should be noted that the hoisting platform in S1 includes a safety plate 6 and a working plate 7 arranged sequentially from top to bottom. The safety plate 6 and the working plate 7 are welded together by several steel components. The vertical distance L between the safety plate 6 and the working plate 7 is ≥5m. The safety plate 6 and the working plate 7 are located on two crescent-shaped hydraulic templates 9. The distance between the bottom of the working plate 7 and the top of the two crescent-shaped hydraulic templates 9 is at least 2m.

[0068] It should be noted that when the two semi-monthly hydraulic templates 9 are lifted to a height of 6 m from the bottom of the well, two semi-monthly anti-falling protection discs 8 are arranged at a height of 2 m from the bottom of the two semi-monthly hydraulic templates 9, and the anti-falling protection discs 8 are connected to the working disc 7 through a plurality of steel members; the geometric size of the two semi-monthly anti-falling protection discs 8 is smaller than the geometric size of the inner chamber of the two semi-monthly hydraulic templates 9, and can realize vertical up and down movement; the vertical distance between the two semi-monthly anti-falling protection discs 8 and the working disc 7 is greater than the height of the two semi-monthly hydraulic templates 9, and is not less than 15 m. The safety disc 6, the working disc 7 and the anti-falling protection disc 8 are all processed from I-shaped steel and patterned steel plates.

[0069] It should be noted that the two semi-monthly hydraulic templates 9 form a well body secondary lining concrete 10 pouring space with the well body primary lining concrete 5, and the straight edge steel templates of the two semi-monthly hydraulic templates 9 form a well body partition plate pouring space, each semi-monthly hydraulic template 9 is uniformly provided with four lifting points 12, and is lifted and lowered through the corresponding number of stabilizers 2, steel wire ropes 3, sinking derricks 1, top sheaves 4 and lifting points 12 in sequence.

[0070] It should be noted that the outer wall diameter of the two semi-monthly hydraulic templates 9 is D1, the design inner diameter of the well body secondary lining is D2, and D1-D2 is greater than or equal to 50 mm, the height of the two semi-monthly hydraulic templates 9 is H, and after the positioning and installation of the second high template, the lap height with the first high poured well body secondary lining and partition plate concrete is at least 0.2 m;

[0071] The well shaft secondary lining overall uplink hydraulic metal steel template is composed of 40 circular steel templates, straight edge steel templates, sharp angle steel templates and telescopic systems 15. The circular steel templates, straight edge steel templates, sharp angle steel templates and telescopic systems 15 are connected by high-strength bolts to form vertical rectangles or vertical circular arcs with a height of H, and the adjacent vertical rectangles or vertical circular arcs are connected by vertical flanges with a height of H to form an integral whole.

[0072] Each semi-monthly hydraulic template 9 includes a plurality of secondary lining circular arc steel templates 22, partition plate straight edge steel templates 23, sharp angle steel templates and four telescopic systems 15 arranged outside the secondary lining circular arc steel templates 22 and the partition plate straight edge steel templates 23, and the secondary lining circular arc steel templates 22 and the partition plate straight edge steel templates 23 are connected by high-strength bolts between a plurality of circular arc shapes and straight edge shapes;

[0073] The arc-shaped steel formwork and the straight edge steel formwork of the two semi-monthly hydraulic formworks 9 are provided with two telescopic systems 15, each telescopic system 15 comprises a T-shaped steel formwork 21, a plurality of limiting movable devices 16, a plurality of hydraulic telescopic oil cylinders 17, a plurality of steel rail sliding grooves 18, and the arc-shaped steel formwork and the straight edge steel formwork on the left and right sides of the T-shaped steel formwork 21;

[0074] The plurality of steel rail sliding grooves 18 are arranged in the same direction, and the fixed end and the telescopic end of the plurality of hydraulic telescopic oil cylinders 17 are arranged on the arc-shaped steel formwork and the straight edge steel formwork on the left and right sides of the T-shaped steel formwork 21, and the T-shaped steel formwork 21 is arranged close to the outside of the arc-shaped steel formwork and the straight edge steel formwork on the left and right sides;

[0075] The concrete pouring window 19 is further arranged on the wellbore second lining arc-shaped steel formwork 22 and the middle partition plate straight edge steel formwork 23, the height of the window is less than or equal to 2 m from the bottom of the formwork, and the observation port is further arranged at the bottom of the pouring window 19, and a plurality of attached vibrators are uniformly arranged on the arc-shaped steel formwork and the middle partition plate straight edge steel formwork.

[0076] The plurality of hydraulic telescopic oil cylinders 17 are synchronously telescoped, so that the arc-shaped formwork and the straight edge steel formwork are relatively moved along the steel rail sliding groove, the degree of mechanization is high, the purpose of rapid assembly and disassembly of the mold is achieved, the operation is simple, the inclination is easy to control, and the technical risk is low.

[0077] It should be noted that in S2, the well bottom assembly sequence is to first install the second lining arc-shaped steel formwork 22 provided with the lifting point 12, then sequentially install the second lining arc-shaped steel formwork 22 provided with the lifting point 12 on both sides of the second lining arc-shaped steel formwork 22, until the installation of the second lining arc-shaped steel formwork 22 is completed, after the installation of the second lining arc-shaped steel formwork 22 is completed, the pointed corner formwork is installed, and finally the middle partition plate straight edge steel formwork 23 is installed, after the assembly is completed, the formwork and the concrete contact surface are brushed with a release agent. The installation sequence of the middle partition plate straight edge steel formwork 23 is the same as the installation method of the second lining arc-shaped steel formwork.

[0078] It should be noted that after the second lining steel reinforcement and the middle partition plate steel reinforcement in the second section are bound, the stabilizer 2 is started to lift the two semi-monthly hydraulic formworks 9 to the second section, the positioning steel wire with a hammer ball is suspended at the well head crown block 4 platform wellbore design center position, the positioning steel wire with a hammer ball passes through the positioning steel wire reserved hole 13 arranged at the top of the formwork, and the formwork is accurately positioned and assembled by the positioning steel wire with a hammer ball;

[0079] The assembly steps are as follows:

[0080] S4.1: loosen the plurality of limiting movable devices 16 at each telescopic system 15;

[0081] S4.2: connect the power supply and the telescopic system 15 of the hydraulic demolding electric pump, connect the oil pipes of the several hydraulic telescopic oil cylinders 17, start the hydraulic demolding electric pump to make the several hydraulic telescopic oil cylinders 17 open, and make the two-liner arc-shaped steel formwork and the straight-edge steel formwork of the middle partition plate tightly adhere to the T-shaped steel formwork 21 and relatively move outward along the steel rail sliding groove 18(18) to the preset distance;

[0082] S4.3: fix the several limiting movable devices 16 of the telescopic system 15 at each position and the several limiting movable devices 16 at the top end of the straight-edge steel formwork of the middle partition plate;

[0083] S4.4: tighten the several jacks at the end of the several metal tightening devices 11 of the two layers in the two half-moon-shaped hydraulic formworks 9, and fully pave the scaffolding boards on the several metal tightening devices 11 as the concrete pouring platform.

[0084] It should be noted that the following sub-steps are also included in S3:

[0085] S3.1: the concrete is mixed at the wellhead mixing station, after mixing, the concrete is discharged into the bottom discharge bucket 24, and then is vertically transported to the collecting hopper 25 on the working disc 7 through the stable car 2, and is symmetrically layered into the mold through several chutes and several distribution pipes 26 with a diameter D, wherein D≥200 mm;

[0086] S3.2: a buffer device is installed on the several distribution pipes 26;

[0087] S3.3: when the first concrete pouring of the Nth section is performed, the discharge outlets of the several distribution pipes 26 are connected with the several pouring windows 19, when the top surface of the concrete is 500 mm away from the pouring window 19, the lifting platform is used to move the discharge outlets of the several distribution pipes 26 to the top opening of the two half-moon-shaped hydraulic formworks 9; the height of the formwork is 4.7 m, and the effective pouring height is 4.5 m, if the pouring is performed from the top opening, the concrete falling height is greater than or equal to 2 m, which is easy to cause the segregation of the concrete, therefore, the formwork is provided with a certain number of pouring windows, and the distance between the windows is set to be 2 m away from the bottom end of the formwork upward, which is not easy to cause the segregation of the concrete.

[0088] S3.4: during the concrete pouring process, the main vibration mode is the plug-in type vibrating rod, and the auxiliary vibration mode is the attached vibrator provided on the whole body of the shaft lining integral upward hydraulic metal steel formwork.

[0089] It should be noted that in step S5, the formwork can be removed and the concrete can be cured after the strength of the concrete stone reaches the preset strength, and the removal steps are as follows:

[0090] S5.1: loosen the movable connection device 14 at the top end of the middle partition plate and the several limiting movable devices 16 at the telescopic system 15;

[0091] S5.2: loosen 2 layers of several metal supporting devices 11 at the ends of several jacks in the 2 semi-monthly hydraulic formwork 9 chambers;

[0092] S5.3: connect the hydraulic demolding electric pump to the power supply and several hydraulic telescopic oil cylinders 17 on each telescopic system 15, start the hydraulic demolding electric pump to make several hydraulic telescopic oil cylinders 17 contract, and make the two-liner arc-shaped steel formwork and the mid-plate straight-edged steel formwork tightly adhere to the T-shaped steel formwork 21, relatively move inward along the steel rail sliding groove 18 to contract and realize form removal.

[0093] The N hydraulic telescopic oil cylinders arranged at the two-liner arc-shaped steel formwork and the mid-plate straight-edged steel formwork are preferably synchronously operated.

[0094] The concrete can be removed only when the strength of the concrete reaches the specified strength, and the concrete does not show signs of cracking after demolding, thereby reducing the maintenance cost in the later period.

[0095] The above specific embodiments further specifically describe the purposes, technical solutions and beneficial effects of the present application, and it should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for synchronous construction of shaft lining and diaphragm, characterized in that, Comprising the following steps: S1: construction preparation, install a hanging platform in the well bottom, lift the hanging platform to a preset height from the well bottom; S2: assemble 2 half-moon-shaped hydraulic templates (9) at the well bottom, after assembly, several stabilizing vehicles (2) suspend the 2 half-moon-shaped hydraulic templates (9); S3: the secondary lining and the mid-plate are divided into several sections from bottom to top, the first section of the secondary lining steel and the mid-plate steel from bottom to top are bound around the hydraulic template (9), the first section of the secondary lining and the mid-plate concrete is poured and cured; S4: the first section of the concrete top surface is chiseled, the second section of the secondary lining steel and the mid-plate steel is bound; S5: at the first section position, the 2 half-moon-shaped hydraulic templates (9) are demoulded; S6: the 2 half-moon-shaped hydraulic templates (9) of the first section are lifted to the second section position by the stabilizing vehicle (2) and are combined; S7: the second section of the secondary lining and the mid-plate concrete is poured and cured; The above steps of S4 to S7 are repeated, and the construction is circularly performed from bottom to top to the well mouth to complete the secondary lining and the mid-plate construction of the well body; The outer wall diameter of the hydraulic template (9) is D1, the designed inner diameter of the well body secondary lining is D2, and D1-D2 is greater than or equal to 50 mm, the height of the hydraulic template (9) is H, and after the positioning and installation of the second section high template are completed, the lap height with the first section high well body secondary lining and mid-plate concrete is at least 0.2 m; Each hydraulic template (9) comprises several secondary lining arc steel templates (22), mid-plate straight edge steel templates (23), sharp corner steel templates, and 4 extension systems (15) arranged closely outside the secondary lining arc steel templates (22) and the mid-plate straight edge steel templates (23), each extension system (15) comprises a T-shaped steel template (21), several limiting movable devices (16), several hydraulic telescopic oil cylinders (17), several steel rail sliding grooves (18), and arc-shaped steel templates and straight edge steel templates on the left and right sides of the T-shaped steel template (21); The several steel rail sliding grooves (18) are arranged in the same direction, the fixed ends and the telescopic ends of the several hydraulic telescopic oil cylinders (17) are respectively arranged on the arc-shaped steel templates and the straight edge steel templates on the left and right sides of the T-shaped steel template (21), and the T-shaped steel template (21) is arranged closely outside the arc-shaped steel templates and the straight edge steel templates on the two sides; The well body secondary lining arc steel templates (22) and the mid-plate straight edge steel templates (23) are also provided with concrete pouring windows (19), the window height is ≤2 m from the template bottom, and an observation port is arranged at a distance from the pouring window (19) bottom, and a plurality of attached vibrators are uniformly arranged on the arc-shaped steel templates and the mid-plate straight edge steel templates.

2. A method for synchronous construction of the second lining and the diaphragm of a shaft well according to claim 1, characterized in that, The hanging platform in S1 comprises a safety platform (6) and a working platform (7) arranged in sequence from top to bottom, the safety platform (6) and the working platform (7) are welded by several steel members, the vertical distance L between the safety platform (6) and the working platform (7) is ≥5 m, and the safety platform (6) and the working platform (7) are located above the 2 half-moon-shaped hydraulic templates (9), and the distance between the bottom of the working platform (7) and the top of the 2 half-moon-shaped hydraulic templates (9) is at least 2 m.

3. A method of constructing a shaft lining and a diaphragm simultaneously according to claim 2, characterized in that, Two semi-monthly hydraulic templates (9) are lifted to a height of 6 m from the bottom of the well, and two semi-monthly anti-falling protection discs (8) are arranged at a height of 2 m from the bottom of the two semi-monthly hydraulic templates (9). The anti-falling protection disc (8) is connected to the working disc (7) by a plurality of steel members.

4. A method for synchronous construction of the second lining and the diaphragm in a shaft well according to claim 1, characterized in that, The hydraulic template (9) and the well body primary lining concrete (5) form a well body secondary lining concrete (10) pouring space, and the straight edge steel template of the hydraulic template (9) forms a well body partition plate pouring space. The top end of the hydraulic template (9) is uniformly provided with four lifting points (12), and is sequentially lifted and lowered through the corresponding number of stable cars (2) via steel wire ropes (3), shaft sinking derricks (1), top sheaves (4), and lifting points (12).

5. A method for synchronous construction of the second lining and the diaphragm in a shaft well according to claim 1, characterized in that, In S2, the bottom of the well is assembled in the following order: first, install the two-lining arc steel template (22) provided with the lifting point (12), then install the two-lining arc steel template (22) on both sides of the two-lining arc steel template (22) provided with the lifting point (12), until the two-lining arc steel template (22) is installed. After the installation of the two-lining arc steel template (22) is completed, the sharp corner template is installed, and finally the straight edge steel template (23) of the partition plate is installed. After the assembly is completed, the template and the concrete contact surface are coated with a release agent.

6. A method for synchronous construction of the second lining and the diaphragm in a shaft well according to claim 1, characterized in that, After the second section of secondary lining steel and partition plate steel is bound, the stable car (2) is started to lift the two semi-monthly hydraulic templates (9) to the second section. A positioning steel wire with a hammer ball is suspended at the center of the well design on the derrick sheave platform. The top of the template is provided with a positioning steel wire reserved hole (13). The positioning steel wire with a hammer ball passes through the positioning steel wire reserved hole (13) at the top of the template to accurately position the template and close the mold. The mold closing steps are as follows: S4.1: loosen the limiting movable devices (16) at each telescopic system (15); S4.2: connect the hydraulic demolding electric pump to the power supply and the oil pipe of the telescopic system (15) several hydraulic telescopic oil cylinders (17), start the hydraulic demolding electric pump to make the several hydraulic telescopic oil cylinders (17) open, and make the two-lining arc steel template and the straight edge steel template of the partition plate tightly adhere to the T-shaped steel template (21) and relatively move outward along the steel rail chute (18) to the preset distance; S4.3: fix the limiting movable devices (16) at each telescopic system (15) and the limiting movable devices (16) at the top of the straight edge steel template of the partition plate; S4.4: tighten the several jacks at the end of the several metal tightening devices (11) in the cavity of the two semi-monthly hydraulic templates (9), and fully pave the scaffolding on the several metal tightening devices (11) as a concrete pouring platform.

7. A method of lining a shaft in two stages simultaneously with the installation of a diaphragm according to claim 1, characterised in that, S3 further includes the following sub-steps: S3.1: The concrete is mixed at the wellhead mixing station. After mixing, it is placed into the bottom discharge bucket (24), which is vertically transported to the aggregate hopper (25) on the working disc (7) by the stable car (2), and is layered and symmetrically poured into the mold through several chutes and several D-diameter distribution pipes (26), wherein D≥200 mm; S3.2: A buffer device is installed on the several distribution pipes (26); S3.3: When the first time of pouring concrete, the outlet of several distribution pipes (26) is connected with several pouring windows (19), when the top surface of the concrete is 500mm away from the pouring window (19), the lifting platform is lifted to place the outlet of several distribution pipes (26) on the top of the two semi-monthly hydraulic templates (9); S3.4: During the process of pouring concrete, the main method is to use the inserted vibrating rod, and the auxiliary method is to use the attached vibrator installed on the whole body of the shaft lining integral upward hydraulic metal steel template.

8. A method for synchronous construction of the second lining and the diaphragm in a shaft well according to claim 1, characterized in that, In step S5, when the strength of the concrete stone reaches the preset strength, the formwork can be removed for curing, and the steps of removing the formwork are as follows: S5.1: Loosen the movable connection device (14) at the top end of the partition plate, and loosen the several limiting movable devices (16) at the telescopic system (15); S5.2: Loosen the several metal tensioning devices (11) at the end of the two layers in the chamber of the two semi-monthly hydraulic templates (9); S5.3: Connect the hydraulic demolding electric pump with the power supply and the several hydraulic telescopic oil cylinders (17) on each telescopic system (15), start the hydraulic demolding electric pump to make the several hydraulic telescopic oil cylinders (17) contract, make the second lining arc steel template and the partition plate straight edge steel template tightly adhere to the T-shaped steel template (21), and relatively move inward along the steel rail sliding groove (18) to realize the removal of the formwork.

Images