Assembly type prefabricated maintenance working well pipe gallery system and construction method

Abstract

The invention provides an assembly type prefabricated overhaul work well pipe gallery system and a construction method, and relates to the technical field of assembly type prefabricated pipe galleries. The inspection well comprises a groove body, the inner bottom face of the groove body is fixedly connected with a first layer of concrete, the upper surface of the first layer of concrete is fixedly connected with a second layer of concrete, the structural strength of the inspection well is improved through a chamfer structure arranged in a shell, and the service life of the inspection well is prolonged through a grounding ring arranged at the bottom of the inspection well. The cable rack is used for installing a ground wire, guiding current to the ground and guaranteeing the safety of personnel entering a maintenance well, meanwhile, an iron ring structure at the top is used for guiding the current to the ground and preventing the current from hurting the maintenance personnel, and the cable rack is connected through vertical welding or punching bolts to form a three-layer cable rack. The cable of the cable duct bank connected with the two ends is divided into two parts to be placed on the cable rack, a passage for people to pass through is reserved in the middle of a working well, people can go down to overhaul conveniently, the overhaul wells which are cast in advance are spliced and connected, and the installation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of an assembled prefabricated maintenance manhole pipe gallery system and a construction method, and in particular to an assembled prefabricated maintenance manhole pipe gallery system and a construction method. Background Art

[0002] With the progress of industrialization and urbanization, more and more infrastructure and equipment need regular inspection and maintenance to ensure their normal operation. Many pipelines, transmission systems, underground facilities, etc. are usually located underground or in difficult-to-access places, and traditional ground operations often fail to meet the requirements. Inspection wells have therefore emerged as a necessary place for maintenance and inspection of equipment. The design of inspection wells is to provide a safe and convenient working environment to avoid potential safety risks for workers due to entering inaccessible places. Inspection wells are usually equipped with ladders, platforms or passages to facilitate workers to enter and perform related operations. Inspection wells are widely used in various types of infrastructure, including but not limited to public facilities such as electricity, communications, water supply, drainage, and gas. Especially in urban infrastructure construction, inspection wells are an important part of daily management, emergency maintenance, equipment replacement, and troubleshooting.

[0003] The existing cable inspection wells are manufactured by on-site casting, which takes a long time to build. In addition, the cast-in-place wells have limitations and are affected by geographical conditions. The existing prefabricated wells are in the form of separate parts, including covers and side walls, with small volumes, narrow scope of application, weak structures, and troublesome construction. Summary of the invention

[0004] The purpose of the present invention is to provide an assembled prefabricated maintenance manhole corridor system and a construction method, which solves the problems of long construction time, geographical restrictions and weak split structure.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] The assembled prefabricated maintenance well pipe gallery system comprises a groove body, a cable pipe arrangement mechanism and a maintenance well mechanism. A low-potential groove is further provided in the groove body, and a maintenance well mechanism is arranged in the low-potential groove. The cable pipe arrangement mechanism is symmetrically connected at both ends of the upper part of the maintenance well mechanism. The bottom surface position of the cable pipe arrangement mechanism is higher than the bottom surface position of the maintenance well mechanism. The maintenance well mechanism comprises a cushion layer and a maintenance well. The cushion layer comprises a first layer of concrete, a maintenance well support frame and a second layer of concrete. The first layer of concrete is paved on the inner bottom surface of the low-potential groove. The upper surface of the first layer of concrete is provided with A maintenance well support frame is provided and fixed by a second layer of concrete, both ends of the maintenance well support frame are tightly fixed to the trough wall, the upper surface of the second layer of concrete is equipped with a maintenance well, the cable pipe arrangement mechanism includes a cushion layer and a cable pipe, the cushion layer includes a first layer of concrete, a pipe support frame and a second layer of concrete, a pipe support frame is provided on the upper surface of the first layer of concrete, one end of the pipe support frame is inserted into the side wall of the maintenance well for positioning, and is fixed by the second layer of concrete, and a cable pipe is installed on the upper surface of the pipe support frame, so that the cable pipe can be slidably inserted on both sides of the maintenance well.

[0007] Moreover, the inspection well includes two installation walls and a plurality of unit inspection wells, a pipe installation opening is formed in the middle of the installation wall, and a plug-in limit opening for inserting and limiting the end of the pipe support frame is also opened at the lower position of the pipe installation opening; a plurality of unit inspection wells are arranged between the two installation walls to form a whole.

[0008] Moreover, the unit inspection well includes a shell, a wiring piece, an iron ring structure, a mounting groove, an annular groove, a cable rack, a grounding ring, a chamfered block, a bolt hole and a lifting ring. The shell is installed on the upper surface of the second layer of concrete. The mounting groove is opened at the rear end of the shell. A protrusion corresponding to the shell is opened at the front end of the shell. The annular groove is opened on the side surface of the mounting groove. The chamfered block is fixedly connected to the inner four corner edges of the shell.

[0009] Moreover, the cable rack is fixedly connected to the inner surface of the shell, the grounding ring is fixedly connected to the inner bottom surface of the shell, the iron ring structure is fixedly connected to the upper surface of the shell, the hanging ring is fixedly connected to the upper surface of the shell, the wiring piece is fixedly connected to the front edge of the shell, and the bolt hole is opened on the inner surface of the chamfered block.

[0010] The construction method proposed for the prefabricated maintenance manhole corridor system includes the following steps:

[0011] Step 1: Dig out a groove body on the bottom surface, and then dig a low-potential groove in the groove body, and lay the first layer of concrete on the bottom surface of the low-potential groove. After laying, wait for the first layer of concrete to dry.

[0012] Step 2: Place the manhole support frame on the first layer of concrete in the low-potential groove, and then cast a second layer of concrete on the manhole support frame. The casting height of the second layer of concrete is consistent with the height of the manhole support frame and is kept horizontal. The smooth surface of the manhole support frame is kept exposed, and then the second layer of concrete is allowed to dry.

[0013] Step 3: First, lift the prefabricated multiple unit inspection wells and installation walls to be assembled onto the inspection well support frame through lifting rings, slide the multiple unit inspection wells and installation walls together on the inspection well support frame, fit the installation grooves and protrusions, place sealing rings on the annular grooves between them to prevent water leakage, and then use long bolts to fasten the unit inspection wells and installation walls to form a whole.

[0014] Step 4: After the installation of the inspection well is completed, a cushion layer is laid in the groove body on both sides of the low-potential groove. The upper surface of the cushion layer is at the same height as the lower end of the pipe installation port of the inspection well. The cushion layer includes a first layer of concrete. A pipe support frame is placed on the first layer of concrete. The end of the pipe support frame is inserted into the insertion limit opening of the installation wall. Then, a second layer of concrete is cast on the cable pipe support frame. The casting height of the second layer of concrete is consistent with the height of the pipe support frame and is kept horizontal. Then, the second layer of concrete is waited for to dry.

[0015] Step 5: Lift the cable conduit on both sides of the inspection well and perform sliding lifting, plug-in and assembly.

[0016] The advantages and positive effects of the present invention are:

[0017] 1. The installation efficiency is improved by assembling and connecting multiple pre-cast unit inspection wells and installation walls. The inspection well is more convenient to install by lifting the lifting ring. The ring groove is used to install the sealing ring to prevent water leakage. The chamfered structure inside the shell increases the structural strength of the inspection well.

[0018] 2. The grounding ring installed at the bottom of the inspection well is used to install the ground wire to guide the current to the ground to ensure the safety of personnel entering the inspection well. At the same time, the iron ring structure on the top is also used to lead the current underground to prevent the current from harming the maintenance personnel.

[0019] 3. Connect the cable rack by vertical welding or punching bolts to form a three-layer cable rack. Divide the cables of the cable pipes connected at both ends into two and place them on the cable rack. Reserve a passage for people in the middle of the working shaft to facilitate maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the assembled prefabricated maintenance manhole pipe gallery system and the construction method proposed in the present invention;

[0021] Figure 2 A schematic diagram of the pipe gallery structure of the assembled prefabricated maintenance manhole pipe gallery system and the construction method proposed in the present invention;

[0022] Figure 3 A schematic diagram of the second-layer concrete structure of the assembled prefabricated maintenance manhole pipe gallery system and construction method proposed in the present invention;

[0023] Figure 4 A schematic diagram of the support frame structure of the assembled prefabricated maintenance manhole pipe gallery system and the construction method proposed in the present invention;

[0024] Figure 5 This is a schematic diagram of the unit maintenance well structure of the assembled prefabricated maintenance well corridor system and construction method proposed in the present invention.

[0025] Among them, 1. groove body; 2. first layer of concrete; 3. second layer of concrete; 4. cable pipe; 5. inspection well; 5-1. shell; 5-2. terminal block; 5-3. grounding ring; 5-4. installation groove; 5-5. ring groove; 5-6. cable rack; 5-7. grounding ring; 5-8. chamfered block; 5-9. bolt hole; 5-10. lifting ring; 5-11. water collecting trough; 6. supporting frame. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figure 1-5As shown, an embodiment of the present invention provides an assembled prefabricated maintenance well pipe gallery system, including a groove body 1, a cable pipe arrangement mechanism and a maintenance well mechanism. A low-potential groove is also provided in the groove body 1, and a maintenance well mechanism is arranged in the low-potential groove. The cable pipe arrangement mechanism is symmetrically connected at both ends of the upper part of the maintenance well mechanism. The bottom surface position of the cable pipe arrangement mechanism is higher than the bottom surface position of the maintenance well mechanism. The maintenance well mechanism includes a cushion layer and a maintenance well. The cushion layer includes a first layer of concrete 2, a maintenance well support frame and a second layer of concrete 3. The inner bottom surface of the low-potential groove is paved with a first layer of concrete 2, and the upper surface of the first layer of concrete 2 is A maintenance well support frame is provided on the surface and is fixed by a second layer of concrete 3. Both ends of the maintenance well support frame are tightly fixed to the trough wall. A maintenance well 5 is installed on the upper surface of the second layer of concrete 3. The cable pipe arrangement mechanism includes a cushion layer and a cable pipe. The cushion layer includes a first layer of concrete 2, a pipe arrangement support frame and a second layer of concrete 3. A pipe arrangement support frame is provided on the upper surface of the first layer of concrete 2 and is fixed by a second layer of concrete 3. One end of the pipe arrangement support frame is inserted into the side wall of the maintenance well for positioning. A cable pipe 5 is installed on the upper surface of the second layer of concrete 3 to enable the cable pipe to be better slidably inserted on both sides of the maintenance well.

[0028] The cable conduit 4 is a common existing conduit. Different specifications of the cable conduit 4 can be selected according to the cables of different specifications.

[0029] The groove body 1 is a groove excavated on the ground, in which a low-potential groove is arranged. The low-potential groove is used to set up a maintenance well mechanism. A first layer of concrete 2 is laid on the bottom surface of the low-potential groove. After laying, the first layer of concrete 2 is waited for to dry, and then a maintenance well support frame is placed on the first layer of concrete 2. Then, a second layer of concrete 3 is poured on the maintenance well support frame. The pouring height of the second layer of concrete 3 is consistent with the height of the maintenance well support frame and is kept horizontal. Then, the second layer of concrete 3 is waited for to dry, and then multiple unit maintenance wells are hoisted to the maintenance well support frame through lifting rings 5-10, and the multiple unit maintenance wells are slidably connected together on the maintenance well support frame.

[0030] The height of the second layer of concrete 3 is the same as that of the pipe support frame and the inspection well support frame, and the smooth upper surfaces of the pipe support frame and the inspection well support frame are exposed; the pipe support frame and the inspection well support frame have the same structure, and the support frame 6 is provided on the one hand to allow the second layer of concrete 3 to have better supporting force, and on the other hand to facilitate the sliding installation of the inspection well and the cable pipe, and the unit inspection wells are connected by long bolts;

[0031] The inspection well includes two installation walls and multiple unit inspection wells, a pipe installation opening is formed in the middle of the installation wall, and a plug-in limit opening for the end of the pipe support frame is also opened at the lower position of the pipe installation opening; multiple unit inspection wells are arranged between the two installation walls to form a whole, and the unit inspection well includes a shell 5-1, a wiring piece 5-2, a grounding ring 5-3, a mounting groove 5-4, a ring groove 5-5, a cable rack 5-6, a grounding wire 5-7, a chamfered block 5-8, a bolt hole 5-9 and a lifting ring 5-10, the shell 5-1 is installed on the upper surface of the second layer of concrete 3, and the mounting groove 5-4 is opened on the shell One end of the shell 5-1, the other end of the shell 5-1 is provided with a protrusion corresponding to the shell 5-1, the annular groove 5-5 is provided on the side surface of the mounting groove 5-4, the chamfered block 5-8 is fixedly connected to the inner four corner edges of the shell 5-1, the cable rack 5-6 is fixedly connected to the inner surface of the shell 5-1, the grounding wire 5-7 is fixedly connected to the inner bottom surface of the shell 5-1, the grounding ring 5-3 is fixedly connected to the upper surface of the shell 5-1, the lifting ring 5-10 is fixedly connected to the upper surface of the shell 5-1, the terminal piece 5-2 is fixedly connected to the front edge of the shell 5-1, and the bolt hole 5-9 is provided on the inner surface of the chamfered block 5-8.

[0032] The upper surface of the bottom of the shell is provided with a water collecting tank 5-11. The water collecting tank 5-11 can prevent water accumulation in the well, and its device can discharge the accumulated water to ensure the stability of the environment in the well.

[0033] The cable rack 5-6 can also be installed inside the shell 5-1 by welding. The installation groove 5-4 and the protrusion are engaged, and a sealing ring is placed on the annular groove 5-5 between them to prevent water leakage. Then, long bolts are used to connect the unit inspection wells together. After the inspection well 5 is installed, the cable rack 5-6 is installed inside the shell 5-1 by bolts, and then cable pipes 4 are installed at both ends to place cables. The cables passing through the shell 5-1 in the middle are placed on the cable rack 5-6 for arrangement.

[0034] The construction method of the assembled prefabricated maintenance manhole pipe gallery system includes the following steps:

[0035] Step 1: dig a groove body 1 on the bottom surface, dig a low-potential groove in the groove body, lay a first layer of concrete 2 on the bottom surface of the low-potential groove, and wait for the first layer of concrete 2 to dry after laying.

[0036] Step 2: Place the manhole support frame 6 on the first layer of concrete 2 in the low-potential groove, and then cast a second layer of concrete 3 on the manhole support frame 6. The casting height of the second layer of concrete 3 is consistent with the height of the manhole support frame 6 and is kept horizontal. The smooth surface of the manhole support frame is kept exposed, and then the second layer of concrete 3 is left to dry.

[0037] Step 3: First, lift the prefabricated multiple unit inspection wells to be assembled onto the inspection well support frame through the lifting rings 5-10, slide the multiple unit inspection wells together on the inspection well support frame, fit the installation grooves 5-4 and the protrusions, place a sealing ring on the annular groove 5-5 between them to prevent water leakage, and then use long bolts to fasten the unit inspection wells and the installation walls at both ends to form a whole.

[0038] Step 4: After the inspection well 5 is installed, a cushion layer is laid in the groove body on both sides of the low-potential groove. The upper surface of the cushion layer is at the same height as the lower end of the pipe installation port of the inspection well. The cushion layer includes a first layer of concrete 2. A pipe support frame is placed on the first layer of concrete 2. The end of the pipe support frame is inserted into the insertion limit port of the installation wall. Then, a second layer of concrete 3 is cast on the cable pipe support frame. The casting height of the second layer of concrete 3 is consistent with the height of the pipe support frame 6 and is kept horizontal. Then, the second layer of concrete 3 is waited for to dry.

[0039] Step 5: Lift the cable conduit on both sides of the inspection well and perform sliding lifting, plug-in and assembly.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled prefabricated maintenance well pipe gallery system, comprising a groove body (1), a cable pipe arrangement mechanism and a maintenance well mechanism, wherein a low potential groove is further provided in the groove body (1), the maintenance well mechanism is arranged in the low potential groove, the cable pipe arrangement mechanism is symmetrically connected and arranged at both ends of the upper part of the maintenance well mechanism, the bottom surface of the cable pipe arrangement mechanism is higher than the bottom surface of the maintenance well mechanism, the maintenance well mechanism comprises a cushion layer and a maintenance well, the cushion layer comprises a first layer of concrete (2), a maintenance well support frame and a second layer of concrete (3), the inner bottom surface of the low potential groove is paved with a first layer of concrete (2), and the upper surface of the first layer of concrete (2) is provided with a maintenance well. The maintenance well support frame is fixed by a second layer of concrete (3), the two ends of the maintenance well support frame are tightly fixed to the trough wall, the upper surface of the second layer of concrete (3) is equipped with a maintenance well 5, the cable pipe arrangement mechanism comprises a cushion layer and a cable pipe (4), the cushion layer comprises a first layer of concrete (2), a pipe arrangement support frame and a second layer of concrete (3), the upper surface of the first layer of concrete (2) is provided with a pipe arrangement support frame, one end of the pipe arrangement support frame is inserted into the side wall of the maintenance well for positioning, and is fixed by the second layer of concrete (3), the upper surface of the pipe arrangement support frame is equipped with a cable pipe (4), so that the cable pipe (4) can be slidably inserted on both sides of the maintenance well.

2. The prefabricated maintenance manhole pipe gallery system according to claim 1 is characterized in that: The inspection well includes two installation walls and multiple unit inspection wells. A pipe installation opening is formed in the middle of the installation wall, and an insertion limit opening for inserting and limiting the end of the pipe support frame is also opened at the lower position of the pipe installation opening; multiple unit inspection wells are arranged between the two installation walls to form a whole.

3. The prefabricated maintenance manhole corridor system according to claim 2 is characterized in that: The unit inspection well comprises a shell (5-1), a terminal piece (5-2), an iron ring structure (5-3), a mounting groove (5-4), an annular groove (5-5), a cable rack (5-6), a grounding ring (5-7), a chamfered block (5-8), a bolt hole (5-9) and a lifting ring (5-10); the shell (5-1) is installed on the upper surface of the second layer of concrete (3); the mounting groove (5-4) is provided at the rear end of the shell (5-1); a protrusion corresponding to the shell (5-1) is provided at the front end of the shell (5-1); the annular groove (5-5) is provided on the side surface of the mounting groove (5-4); and the chamfered blocks (5-8) are fixedly connected to the inner four corner edges of the shell (5-1).

4. The assembled prefabricated maintenance manhole corridor system according to claim 3 is characterized in that: The cable rack (5-6) is fixedly connected to the inner surface of the shell (5-1), the grounding ring (5-7) is fixedly connected to the inner bottom surface of the shell (5-1), the iron ring structure (5-3) is fixedly connected to the upper surface of the shell (5-1), the lifting ring (5-10) is fixedly connected to the upper surface of the shell (5-1), the wiring piece (5-2) is fixedly connected to the front edge of the shell (5-1), and the bolt hole (5-9) is opened on the inner surface of the chamfered block (5-8).

5. The construction method proposed according to any one of claims 1 to 4 is characterized in that: The following steps are involved: Step 1: dig out a groove body (1) on the bottom surface, dig out a low-potential groove in the groove body, lay a first layer of concrete (2) on the bottom surface of the low-potential groove, and wait for the first layer of concrete (2) to dry after laying. Step 2: Place the manhole support frame on the first layer of concrete (2) in the low-potential groove, and then cast a second layer of concrete (3) on the manhole support frame. The casting height of the second layer of concrete (3) is consistent with the height of the manhole support frame and is kept horizontal. The smooth surface of the manhole support frame is kept exposed, and then the second layer of concrete (3) is allowed to dry. Step 3: First, the prefabricated multiple unit inspection wells and installation walls to be assembled are hoisted onto the inspection well support frame through the lifting ring (5-10), and the multiple unit inspection wells and installation walls are slidably connected together on the inspection well support frame, and the installation grooves (5-4) and the protrusions are engaged, and a sealing ring is placed on the annular groove (5-5) therebetween to prevent water leakage, and then the unit inspection wells and the installation walls are fastened and connected to form a whole using long bolts. Step 4: After the inspection well (5) is installed, a cushion layer is laid in the groove body on both sides of the low-potential groove, the upper surface of the cushion layer is at the same height as the lower end of the pipe installation port of the inspection well, the cushion layer includes a first layer of concrete (2), a pipe support frame is placed on the first layer of concrete (2), the end of the pipe support frame is inserted into the insertion limit opening of the installation wall, and then a second layer of concrete (3) is cast on the cable pipe support frame, the casting height of the second layer of concrete (3) is consistent with the height of the pipe support frame and kept horizontal, and then the second layer of concrete (3) is waited for to dry; Step 5: Lift the cable conduit (4) on both sides of the inspection well (5) and perform sliding lifting, plugging and assembly.

Images