Construction method for temporary water cut-off of prototype room

Abstract

The invention discloses a construction method for temporary water break of a prototype room. Comprising a ground water cut-off method for constructing a ground water cut-off structure on the ground of an upper floor of a prototype room, a hole water cut-off method for constructing a hole water cut-off structure on a reserved hole of the upper floor of the prototype room, and a piping shaft water cut-off method for constructing a piping shaft water cut-off structure on a piping shaft of the upper floor of the prototype room. According to the elevator shaft water breaking method, the elevator shaft water breaking structure is constructed on an elevator shaft of the upper floor of the prototype room, and according to the floor edge overhanging eave water breaking method, the overhanging eave water breaking structure is constructed on the ground of the upper floor of the prototype room and connected with the hole water breaking structure. The invention relates to the technical field of building construction, and can solve the problem that in the prior art, accumulated water on an upper floor permeates or flows into a prototype room, or external rainwater floats into the prototype room, so that the prototype room is polluted.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a construction method for temporarily cutting off water supply in a model room. Background Art

[0002] In construction projects, based on the sales requirements of the construction unit, it is often necessary to construct a model room on a certain floor during the construction process. Since the main body of the building structure has not been completed and the exterior walls have not been closed, water accumulation is inevitable in the main body of the building structure. The accumulated water on the floors above the model room will seep into or flow into the model room. At the same time, rainwater from the outside of the floor may drift into the model room, thereby polluting the model room and affecting the construction quality of the model room. Therefore, it is necessary to provide a construction method for temporarily cutting off the water supply to the model room, which can solve the problem of pollution of the model room caused by accumulated water on the upper floors seeping into or flowing into the model room or external rainwater drifting into the model room in the prior art. Summary of the invention

[0003] The purpose of the present invention is to provide a construction method for temporarily cutting off water supply to a model room, which can solve the problem in the prior art that accumulated water from upper floors seeps into or flows into the model room or external rainwater drifts into the model room, causing pollution to the model room.

[0004] The present invention is achieved in that:

[0005] A construction method for temporary water cutoff of a model room comprises: a ground water cutoff method in which a ground water cutoff structure is constructed on the ground of a floor above the model room, a hole water cutoff method in which a hole water cutoff structure is constructed on a reserved hole of a floor above the model room, a pipe well water cutoff method in which a pipe well water cutoff structure is constructed on the pipe well of a floor above the model room, an elevator well water cutoff method in which an elevator well water cutoff structure is constructed on the elevator well of a floor above the model room, and a floor edge overhang eaves water cutoff method in which an overhang eaves water cutoff structure is constructed on the ground of a floor above the model room and connected to the hole water cutoff structure.

[0006] The ground water cut-off method comprises the following steps:

[0007] Step 1.1: Apply the construction ground waterproof coating on the floor of the upper floor of the model room;

[0008] Step 1.2: Lay the ground waterproof membrane on the ground waterproof coating to form a ground water-breaking structure. The ground water-breaking structure can be connected with the eaves water-breaking structure constructed by the eaves water-breaking method on the edge of the floor.

[0009] The ground waterproof coating is a 3mm thick modified asphalt waterproof coating, which has a good water-breaking effect, and the ground waterproof coating turns up when encountering walls and columns; the ground waterproof roll is a 3mm thick modified asphalt waterproof roll, which has a good water-breaking effect, and the ground waterproof roll turns up when encountering walls and columns.

[0010] The method for cutting off water supply at the edge of the floor and the overhanging eaves comprises the following steps:

[0011] Step 2.1: Build the eaves along the edge of the floor above the model room;

[0012] Step 2.2: Fold up the ground waterproof coating and ground waterproof membrane of the ground water-blocking structure to the top of the overhanging eaves;

[0013] Step 2.3: Install a flashing board on the eaves to form an eaves water-blocking structure; one end of the flashing board is connected to the ground water-blocking structure, and the other end of the flashing board extends to the outside of the main building structure.

[0014] The cross-section of the flashing board is an L-shaped structure, the vertical section of the flashing board is fixed on the side of the overhanging eaves facing the interior of the main building structure, the horizontal section of the flashing board is 2% sloped laterally outward, and the horizontal section of the flashing board is fixed on the top surface of the overhanging eaves and extends from the overhanging eaves to the outside of the main building structure.

[0015] The method for cutting off water supply at the cave entrance comprises the following steps:

[0016] Step 3.1: Build the counterslope along the edge of the reserved opening;

[0017] Step 3.2: Apply waterproof mortar to the outer wall of the cave entrance;

[0018] Step 3.3: Apply a waterproof coating on the outer wall of the waterproof mortar surface of the hole, and the waterproof coating is extended and connected to the ground outside the reserved hole;

[0019] Step 3.4: construct the opening waterproofing membrane on the outer wall of the opening waterproof coating, and the opening waterproofing membrane is extended and connected to the ground outside the reserved opening;

[0020] Step 3.5: Set a hole sealing plate on the top of the hole counter-ridge, so that the hole sealing plate and the hole counter-ridge close the reserved hole;

[0021] Step 3.6: Construct the sealing board waterproof mortar surface on the top of the hole sealing board. The sealing board waterproof mortar surface has a slope of 2% from the middle to the surrounding areas. The sealing board waterproof mortar surface extends downward along the hole waterproof membrane and connects to the ground outside the reserved hole.

[0022] The pipeline well water cut-off method comprises the following steps:

[0023] Step 4.1: Build the pipe well counter-edge around the pipe well in the circumferential direction;

[0024] Step 4.2: Construct the pipeline well waterproof mortar plastering on the outer wall of the pipeline well counter-slope, and the pipeline well waterproof mortar plastering is extended and connected to the ground outside the pipeline well;

[0025] Step 4.3: Install a closing box in the counter-embankment of the pipeline well, so that the pipeline in the pipeline well passes through the closing box upward;

[0026] Step 4.4: construct a pipeline well waterproof coating on the outer wall of the pipeline well waterproof mortar surface and the top of the closing box, and the pipeline well waterproof coating is extended and connected to the ground outside the pipeline well;

[0027] Step 4.5: Construct the pipeline well waterproofing membrane on the outer wall of the pipeline well waterproofing coating. The water of the pipeline well waterproofing membrane extends downward and is connected to the ground outside the pipeline well. The water of the pipeline well waterproofing membrane turns upward to the outer wall of the pipeline.

[0028] The elevator shaft water cut-off method comprises the following steps:

[0029] Step 5.1: Build the elevator shaft counter-edge at the edge of the elevator shaft;

[0030] Step 5.2: construct the elevator shaft waterproof mortar plastering on the outer wall of the elevator shaft counter-slope;

[0031] Step 5.3: Set up a bracket with one end low and the other end high at the entrance of the elevator shaft. The lower end of the bracket is set on the top of the elevator shaft anti-slope, and the higher end of the bracket is set on the elevator shaft shear wall;

[0032] Step 5.4: Lay the elevator shaft sealing plate on the bracket so that the elevator shaft sealing plate closes the shaft opening of the elevator shaft;

[0033] Step 5.5: construct the elevator shaft waterproof coating on the top of the elevator shaft sealing plate, and the elevator shaft waterproof coating extends downward and connects to the ground outside the elevator shaft;

[0034] Step 5.6: Lay the elevator shaft waterproof membrane on the elevator shaft waterproof coating. The elevator shaft waterproof membrane extends downward and connects to the ground outside the elevator shaft.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention ensures a temporary water-cutting effect between the upper floor and the model room due to the construction of ground water-cutting structure, hole water-cutting structure, pipe well water-cutting structure, elevator shaft water-cutting structure and overhanging eaves water-cutting structure. The ground water-cutting structure can effectively prevent the accumulated water on the upper floor from seeping into the model room through the ground. The hole water-cutting structure, pipe well water-cutting structure and elevator shaft water-cutting structure can effectively prevent the accumulated water on the upper floor from flowing into the model room through the hole. The overhanging eaves water-cutting structure can prevent rainwater outside the floor from drifting into the model room, thereby avoiding pollution of the model room and ensuring the construction quality of the model room.

[0037] 2. The construction method of the present invention is simple, effectively solves the water shortage problem in the model room, is easy to obtain materials and construct, has low cost, fast construction speed, and does not affect the construction of the main body of the building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a construction schematic diagram of the cantilevered eaves water-breaking structure in the construction method of temporary water-breaking in the model room of the present invention;

[0039] Figure 2 It is a construction schematic diagram of a water cut-off structure for a cave entrance in a construction method for temporary water cut-off of a model room of the present invention;

[0040] Figure 3 yes Figure 2 Cross-sectional structural diagram;

[0041] Figure 4 It is a construction cross-sectional schematic diagram of a pipeline well water-cutting structure in a construction method for temporary water-cutting of a model room of the present invention;

[0042] Figure 5 It is a construction cross-sectional schematic diagram of the elevator shaft water cut-off structure in the construction method of temporary water cut-off of the model room of the present invention (the elevator shaft sealing plate is not laid);

[0043] Figure 6 It is a construction cross-sectional schematic diagram of the elevator shaft water-off structure in the construction method for temporary water-off in the model room of the present invention (laying of the elevator shaft sealing plate).

[0044] In the figure, 1 is the floor of the upper floor of the model room, 2 is the eaves counter-ridge, 3 is the ground water-blocking structure, 4 is the rainproof board, 5 is the hole counter-ridge, 6 is the waterproof mortar finishing at the hole, 7 is the hole waterproof structure, 8 is the reserved hole outside ground, 9 is the hole sealing board, 10 is the sealing board waterproof mortar finishing, 11 is the pipe shaft counter-ridge, 12 is the pipe shaft waterproof mortar finishing, 13 is the closing box, 14 is the pipe, 15 is the pipe shaft outside ground, 16 is the pipe shaft waterproof structure, 17 is the elevator shaft counter-ridge, 18 is the bracket, 19 is the elevator shaft shear wall, 20 is the elevator shaft sealing board. DETAILED DESCRIPTION

[0045] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0046] A construction method for temporary water cutoff of a model room comprises: a ground water cutoff method in which a ground water cutoff structure is constructed on the ground of a floor above the model room, a hole water cutoff method in which a hole water cutoff structure is constructed on a reserved hole of a floor above the model room, a pipe well water cutoff method in which a pipe well water cutoff structure is constructed on the pipe well of a floor above the model room, an elevator well water cutoff method in which an elevator well water cutoff structure is constructed on the elevator well of a floor above the model room, and a floor edge overhang eaves water cutoff method in which an overhang eaves water cutoff structure is constructed on the ground of a floor above the model room and connected to the hole water cutoff structure.

[0047] Since the main body of the building structure is not enclosed, rainwater will enter the main body of the building structure and may seep into the model room through the ground of the floor above the model room, or flow into the model room through holes, pipe wells, and elevator wells on the floor above the model room, or drift into the model room from the surrounding floors, causing pollution to the model room and affecting the construction quality of the model room. Therefore, through the construction of ground water-blocking structures, hole water-blocking structures, pipe well water-blocking structures, elevator well water-blocking structures, and eaves water-blocking structures, the accumulated water on the upper floor can be effectively prevented from seeping into or flowing into the model room, and the external rainwater can also be effectively blocked from drifting into the model room.

[0048] The ground water cut-off method comprises the following steps:

[0049] Step 1.1: Apply the construction floor waterproof coating on the floor of the upper floor of the model room.

[0050] Preferably, the ground waterproof coating is a 3 mm thick modified asphalt waterproof coating, which has a good water-blocking effect, and the ground waterproof coating flips up when encountering walls and columns.

[0051] Preferably, the upward turning height of the ground waterproof coating is not less than 300 mm.

[0052] Before the construction of the ground waterproof coating, the floor of the floor above the model room should be polished first to eliminate uneven areas, clean up garbage and floating dust, and avoid affecting the construction quality and waterproofing effect of the ground water-breaking structure.

[0053] Step 1.2: Lay the ground waterproof membrane on the ground waterproof coating to form a ground water-breaking structure 3. The ground water-breaking structure 3 can be connected with the eaves water-breaking structure constructed by the eaves water-breaking method on the edge of the floor.

[0054] Preferably, the ground waterproofing membrane is a 3 mm thick modified asphalt waterproofing membrane, which has a good water-blocking effect, and the ground waterproofing membrane flips up when encountering walls and columns.

[0055] Preferably, the upward folding height of the ground waterproofing membrane is not less than 300 mm.

[0056] Please see attached Figure 1 The method for cutting off water supply at the edge of the floor comprises the following steps:

[0057] Step 2.1: Build the cantilever eaves 2 along the edge of the ground 1 of the upper floor of the model room.

[0058] Preferably, the height of the overhanging eaves 2 is 500 mm.

[0059] Step 2.2: Fold up the ground waterproof coating and ground waterproof membrane of the ground water-blocking structure 3 to the top of the overhanging eaves 2.

[0060] Step 2.3: Install a flashboard 4 on the eaves 2 to form an eaves water-blocking structure; one end of the flashboard 4 is connected to the ground water-blocking structure 3, and the other end of the flashboard 4 extends to the outside of the main building structure.

[0061] The cross-section of the flashing board 4 is an L-shaped structure, the vertical section of the flashing board 4 is fixed on the side of the overhanging eaves 2 facing the interior of the main building structure, the horizontal section of the flashing board 4 is 2% sloped laterally outward, and the horizontal section of the flashing board 4 is fixed on the top surface of the overhanging eaves 2 and extends from the overhanging eaves 2 to the outside of the main building structure.

[0062] Preferably, the outer end surface of the cantilevered eaves 2 is flush with the outer end surface of the floor 1 of the upper floor of the model room, and the flashing board 4 can be made of iron sheet, and the horizontal section of the flashing board 4 extends to 500mm outside the cantilevered eaves 2. Since there is no shear wall around the floor, the flashing board 4 can play a role of water blocking, preventing the external rainwater around the floor from drifting into the floor of the model room.

[0063] Please see attached Figure 2 and attached Figure 3 The method for cutting off water supply at the cave entrance comprises the following steps:

[0064] Step 3.1: Build the opening counter-edge 5 along the edge of the reserved opening.

[0065] Preferably, the height of the hole opening anti-ridge 5 is 300 mm, and it can be formed by cement brick masonry as a water retaining measure at the reserved hole opening.

[0066] Step 3.2: construct a hole waterproof mortar plastering 6 on the outer wall of the hole counter-rim 5 (the side located inside the reserved hole is the inner side, and the side located outside the reserved hole is the outer side).

[0067] Preferably, the thickness of the waterproof mortar plastering 6 of the opening is 15 mm, and it is constructed using a conventional plastering process.

[0068] Step 3.3: construct a hole opening waterproof coating on the outer wall of the hole opening waterproof mortar plastering 6, and the hole opening waterproof coating is extended and connected to the ground 8 outside the reserved hole opening.

[0069] Preferably, the cave opening waterproof coating is a 3 mm thick modified asphalt waterproof coating with good water-blocking effect, and the extended connection width between the cave opening waterproof coating and the reserved cave opening outer side ground 8 is 500 mm.

[0070] Step 3.4: construct the opening waterproofing membrane on the outer wall of the opening waterproof coating, and the opening waterproofing membrane is extended and connected to the ground 8 outside the reserved opening.

[0071] Preferably, the cave opening waterproofing membrane is a 3mm thick modified asphalt waterproofing membrane with good water-blocking effect. The extended connection width between the cave opening waterproofing membrane and the reserved cave opening outer side ground 8 is 500mm, that is, the cave opening waterproofing membrane completely covers the cave opening waterproof coating.

[0072] The cave opening waterproof coating and the cave opening waterproof coiled material constitute the cave opening waterproof structure 7, which can play the role of waterproofing and anti-seepage.

[0073] Step 3.5: A hole sealing plate 9 is arranged on the top of the hole anti-ridge 5, so that the hole sealing plate 9 and the hole anti-ridge 5 close the reserved hole.

[0074] Preferably, the hole sealing plate 9 can be made of a wooden mold according to the size of the hole.

[0075] Step 3.6: Construct a sealing board waterproof mortar surface 10 on the top of the hole sealing board 9. The sealing board waterproof mortar surface 10 has a slope of 2% from the middle to the surrounding areas. The sealing board waterproof mortar surface 10 extends downward along the hole waterproof membrane and is connected to the ground 8 outside the reserved hole.

[0076] Preferably, the thickness of the sealing waterproof mortar surface 10 is 15 mm, and the extended connection width between the sealing waterproof mortar surface 10 and the outer side ground 8 of the reserved opening is 500 mm, that is, the sealing waterproof mortar surface 10 completely covers the opening waterproof membrane and the opening sealing plate 9.

[0077] Please see attached Figure 4 The pipeline well water cut-off method comprises the following steps:

[0078] Step 4.1: Build the pipeline well anti-ridge 11 around the pipeline well in the circumferential direction.

[0079] Preferably, the height of the pipe well anti-ridge 11 is 300 mm, and it can be formed by cement brick masonry as a water retaining measure at the pipe well.

[0080] Step 4.2: Construct a pipeline well waterproof mortar plastering 12 on the outer wall of the pipeline well counter-ridge 11 (the side located inside the pipeline well is the inner side, and the side located outside the pipeline well is the outer side), and the pipeline well waterproof mortar plastering 12 is extended and connected to the ground 15 outside the pipeline well.

[0081] Preferably, the thickness of the pipeline well waterproof mortar surface 12 is 15 mm, and it is constructed using a conventional plastering process. The extended connection width between the pipeline well waterproof mortar surface 12 and the ground 15 outside the pipeline well is 500 mm.

[0082] Step 4.3: Install the closing box 13 in the pipe well counter-edge 11, so that the pipe 14 in the pipe well passes through the closing box 13 upwards.

[0083] Preferably, the closing box 13 is a hollow box structure with an opening at the bottom, which can be made of a wooden mold. The cross-sectional dimensions of the closing box 13 are consistent with the internal cross-sectional dimensions of the pipeline well anti-ridge 11, so that the closing box 13 can be embedded in the pipeline well anti-ridge 11 and close the opening of the pipeline well. A through hole matching the size of the pipeline 14 is reserved at the top of the closing box 13 to ensure that the pipeline 14 can just pass through the closing box 13.

[0084] Step 4.4: construct a pipeline well waterproof coating on the outer wall of the pipeline well waterproof mortar surface 12 and the top of the closing box 13, and the pipeline well waterproof coating is extended and connected to the ground 15 outside the pipeline well.

[0085] Preferably, the pipeline well waterproof coating is a 3mm thick modified asphalt waterproof coating, which has a good water-cutting effect, and the extended connection width between the pipeline well waterproof coating and the ground 15 outside the pipeline well is 500mm.

[0086] Step 4.5: Construct the pipeline well waterproofing membrane on the outer wall of the pipeline well waterproof coating. The water of the pipeline well waterproofing membrane extends downward and connects to the ground 15 outside the pipeline well. The water of the pipeline well waterproofing membrane turns upward to the outer wall of the pipeline 14.

[0087] Preferably, the pipeline well waterproofing membrane is a 3mm thick modified asphalt waterproofing membrane with good water-cutting effect. The extended connection width between the pipeline well waterproofing membrane and the ground 15 outside the pipeline well is 500mm, that is, the pipeline well waterproofing membrane is completely covered on the pipeline well waterproofing coating, and the upward folding height of the pipeline well waterproofing membrane on the pipeline 14 is 300mm.

[0088] The pipeline well waterproof coating and the pipeline well waterproof membrane constitute the pipeline well waterproof structure 16, which can play a role in waterproofing and anti-seepage.

[0089] Please see attached Figure 5 and attached Figure 6 The elevator shaft water cut-off method comprises the following steps:

[0090] Step 5.1: Build the elevator shaft counter-edge 17 at the edge of the elevator shaft.

[0091] Preferably, the height of the elevator shaft anti-slope 17 is 300 mm, and it can be formed by cement brick masonry as a water retaining measure at the elevator shaft.

[0092] Step 5.2: The elevator shaft waterproof mortar surface is constructed on the outer wall of the elevator shaft counter-ridge 17 (the side located inside the elevator shaft is the inner side, and the side located outside the elevator shaft is the outer side).

[0093] Preferably, the thickness of the elevator shaft waterproof mortar plaster is 15 mm.

[0094] Step 5.3: A bracket 18 with one end low and the other end high is set up at the hoistway entrance of the elevator shaft. The lower end of the bracket 18 is set up on the top of the elevator shaft anti-step 17, and the high end of the bracket 18 is set up on the elevator shaft shear wall 19.

[0095] Preferably, the bracket 18 is composed of a plurality of steel pipes, which are parallel to each other and are erected between the elevator shaft counter-step 17 and the elevator shaft shear wall 19. The angle between the steel pipe and the horizontal ground is 30°, ensuring the stable erection of the bracket 18.

[0096] Step 5.4: Lay the elevator shaft sealing plate 20 on the bracket 18 so that the elevator shaft sealing plate 20 closes the shaft opening of the elevator shaft.

[0097] Preferably, the elevator shaft sealing plate 20 can be made of a wooden mold according to the size of the elevator shaft opening and the inclination angle of the steel pipe.

[0098] Step 5.5: construct an elevator shaft waterproof coating on the top of the elevator shaft sealing plate 20, and the elevator shaft waterproof coating extends downward and is connected to the ground outside the elevator shaft.

[0099] Preferably, the elevator shaft waterproof coating is a 3mm thick modified asphalt waterproof coating with good water-blocking effect, and the extended connection width between the elevator shaft waterproof coating and the ground outside the elevator shaft is 500mm.

[0100] Step 5.6: Lay the elevator shaft waterproof membrane on the elevator shaft waterproof coating. The elevator shaft waterproof membrane extends downward and connects to the ground outside the elevator shaft.

[0101] Preferably, the elevator shaft waterproofing membrane is a 3mm thick modified asphalt waterproofing membrane with good water-breaking effect. The extension width of the connection between the elevator shaft waterproofing membrane and the ground outside the elevator shaft is 500mm, that is, the elevator shaft waterproofing membrane completely covers the elevator shaft waterproofing coating.

[0102] By carrying out the above-mentioned temporary water-cutting construction on the floor, reserved openings, pipe shafts, elevator shafts, and eaves of the floor above the model room, it is possible to prevent rainwater from entering the model room from the floor, reserved openings, pipe shafts, and elevator shafts of the upper floor after entering the main building structure and causing pollution to the model room. It is also possible to prevent external rainwater from drifting into the model room and causing pollution to the model room, thereby ensuring the construction quality of the model room.

[0103] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A construction method for temporary water cutoff in a model room, characterized by: include: A ground water-cutting method comprising constructing a ground water-cutting structure on the ground of the floor above the model room, a hole water-cutting method comprising constructing a hole water-cutting structure on the reserved hole of the floor above the model room, a pipe well water-cutting method comprising constructing a pipe well water-cutting structure on the pipe well of the floor above the model room, an elevator shaft water-cutting method comprising constructing an elevator shaft water-cutting structure on the elevator shaft of the floor above the model room, and a floor edge eaves water-cutting method comprising constructing an eaves water-cutting structure on the ground of the floor above the model room and connecting it to the hole water-cutting structure.

2. The construction method for temporary water cutoff in a model room according to claim 1 is characterized by: The ground water cut-off method comprises the following steps: Step 1.1: Apply the construction ground waterproof coating on the floor of the upper floor of the model room; Step 1.2: Lay the ground waterproofing membrane on the ground waterproof coating to form a ground water-blocking structure (3). The ground water-blocking structure (3) can be connected with the eaves water-blocking structure constructed by the eaves water-blocking method at the edge of the floor.

3. The construction method for temporary water cutoff in a model room according to claim 2 is characterized by: The ground waterproof coating is a modified asphalt waterproof coating, and the ground waterproof coating turns up when encountering walls and columns; the ground waterproof roll material is a modified asphalt waterproof roll material, and the ground waterproof roll material turns up when encountering walls and columns.

4. The construction method for temporary water cutoff in a model room according to claim 2 is characterized by: The method for cutting off water supply at the edge of the floor and the overhanging eaves comprises the following steps: Step 2.1: Build the cantilever eaves (2) along the edge of the floor (1) of the upper floor of the model room; Step 2.2: Fold the ground waterproof coating and ground waterproof membrane of the ground water-blocking structure (3) up to the top of the overhanging eaves (2); Step 2.3: Install a flashboard (4) on the eaves (2) to form an eaves water-blocking structure; one end of the flashboard (4) is connected to the ground water-blocking structure (3), and the other end of the flashboard (4) extends to the outside of the main building structure.

5. The construction method for temporary water cutoff in a model room according to claim 4 is characterized by: The cross section of the flashing board (4) is an L-shaped structure. The vertical section of the flashing board (4) is fixed on the side of the overhanging eaves (2) facing the interior of the main building structure. The horizontal section of the flashing board (4) is 2% laterally sloped outward. The horizontal section of the flashing board (4) is fixed on the top surface of the overhanging eaves (2) and extends from the overhanging eaves (2) to the outside of the main building structure.

6. The construction method for temporary water cutoff in a model room according to claim 1 is characterized by: The method for cutting off water supply at the cave entrance comprises the following steps: Step 3.1: Build the hole counter-edge (5) along the edge of the reserved hole; Step 3.2: constructing a waterproof mortar plastering (6) on the outer wall of the hole counter-embankment (5); Step 3.3: constructing a hole waterproof coating on the outer wall of the hole waterproof mortar plastering (6), and the hole waterproof coating is extended and connected to the outer side ground of the reserved hole (8); Step 3.4: constructing a hole waterproofing membrane on the outer wall of the hole waterproof coating, and the hole waterproofing membrane is extended and connected to the ground outside the reserved hole (8); Step 3.5: Arrange a hole sealing plate (9) on the top of the hole anti-ridge (5), so that the hole sealing plate (9) and the hole anti-ridge (5) close the reserved hole; Step 3.6: construct a sealing board waterproof mortar plastering (10) on the top of the hole sealing board (9), the sealing board waterproof mortar plastering (10) has a slope of 2% from the middle to the surroundings, and the sealing board waterproof mortar plastering (10) extends downward along the hole waterproof membrane and is connected to the ground outside the reserved hole (8).

7. The construction method for temporary water cutoff in a model room according to claim 1 is characterized by: The pipeline well water cut-off method comprises the following steps: Step 4.1: Building a pipe well anti-ridge (11) around the pipe well in the circumferential direction; Step 4.2: constructing a pipeline well waterproof mortar plastering (12) on the outer wall of the pipeline well anti-ridge (11), and the pipeline well waterproof mortar plastering (12) is extended and connected to the ground outside the pipeline well (15); Step 4.3: Install a sealing box (13) in the pipe well counter-ridge (11), so that the pipe (14) in the pipe well passes through the sealing box (13) upwards; Step 4.4: constructing a pipeline well waterproof coating on the outer wall of the pipeline well waterproof mortar plastering (12) and the top of the closing box (13), and the pipeline well waterproof coating is extended and connected to the ground outside the pipeline well (15); Step 4.5: Construct a pipeline well waterproofing membrane on the outer wall of the pipeline well waterproof coating, the pipeline well waterproofing membrane water extends downward and connects to the ground outside the pipeline well (15), and the pipeline well waterproofing membrane water turns upward to the outer wall of the pipeline (14).

8. The construction method for temporary water cutoff in a model room according to claim 1 is characterized by: The elevator shaft water cut-off method comprises the following steps: Step 5.1: Building an elevator shaft counter-edge (17) at the edge of the elevator shaft; Step 5.2: constructing the elevator shaft waterproof mortar plastering on the outer wall of the elevator shaft counter-ridge (17); Step 5.3: A bracket (18) with one end lower and the other end higher is set up at the hoistway opening of the elevator shaft, the lower end of the bracket (18) is set up on the top of the elevator shaft anti-step (17), and the upper end of the bracket (18) is set up on the elevator shaft shear wall (19); Step 5.4: Lay the elevator shaft sealing plate (20) on the bracket (18) so that the elevator shaft sealing plate (20) seals the shaft opening of the elevator shaft; Step 5.5: constructing an elevator shaft waterproof coating on the top of the elevator shaft sealing plate (20), and the elevator shaft waterproof coating extends downward and is connected to the ground outside the elevator shaft; Step 5.6: Lay the elevator shaft waterproof membrane on the elevator shaft waterproof coating. The elevator shaft waterproof membrane extends downward and connects to the ground outside the elevator shaft.

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