Underground water-sealing cave depot trolley and construction method

Abstract

The invention relates to an underground water-sealed cave depot trolley and a construction method, and relates to the technical field of underground water-sealed cave depot construction. The underground water-sealed cave depot trolley comprises a frame assembly, a side operation platform, a top operation platform and an anti-falling platform. The side operation platforms are arranged on the two sides of the frame assembly respectively and comprise a plurality of layer operation platforms, and the layer operation platforms are arranged at intervals in the height direction; the top operation platform is arranged at the top of the frame assembly; the anti-falling platform is arranged in the frame assembly, and the anti-falling platform is located between every two adjacent layer operation platforms. According to the technical scheme, the operation requirements of different construction procedures can be met, the time cost is saved while the economic cost of leasing climbing equipment is saved, the construction efficiency is greatly improved, meanwhile, multiple trolleys and climbing equipment do not need to be arranged, and the space occupied by the equipment is saved.

Description

Technical Field

[0001] This invention relates to the field of underground water-sealed cavern construction technology, and particularly to an underground water-sealed cavern trolley and construction method. Background Technology

[0002] A water-sealed underground cavern is an oil and gas storage facility that is constructed by excavating underground caverns in rock masses at a certain depth below a stable low water level. It utilizes the immiscibility of oil, gas, and water, and employs the water-sealing effect of groundwater to seal and store petroleum and liquefied gas.

[0003] The construction of underground water-sealed caverns includes excavation, support, and grouting operations. Excavation is typically carried out manually with drilling and blasting, assisted by an excavation trolley for drilling and explosive loading. Simultaneously, anchor bolts are installed manually for shotcrete support, and articulated boom lifts and other aerial work platforms are used to assist in installation and grouting. However, existing construction methods suffer from the following problems: limited underground working space, the large space required for aerial work platforms and excavation trolleys, and the need for multiple ascents and descents to these devices, resulting in low construction efficiency and a low safety factor. Summary of the Invention

[0004] This application provides an underground water-sealed cavern trolley and construction method that can meet the operational requirements of different construction procedures. It saves economic costs by eliminating the need to rent aerial work platforms, while also saving time costs and greatly improving construction efficiency. At the same time, it eliminates the need to equip multiple trolleys and aerial work platforms, saving space occupied by the equipment.

[0005] In a first aspect, embodiments of this application provide an underground water-sealed cavern trolley, comprising:

[0006] Framework components;

[0007] Side operation platforms are respectively disposed on both sides of the frame component. The side operation platform includes multiple layer operation platforms, which are arranged at intervals along the height direction.

[0008] A top operating platform is located at the top of the frame components;

[0009] A fall-prevention platform is disposed within the frame assembly, and the fall-prevention platform is located between two adjacent layer operation platforms.

[0010] In one implementation, the framework component includes:

[0011] Multiple gantry frames are arranged at intervals along the width direction;

[0012] A frame beam is connected to the bottom of the plurality of gantry frames, and the frame beam is located on both sides of the gantry frames respectively;

[0013] A frame bracing group is located on both sides of the gantry. The frame bracing group includes multiple frame bracing columns, which are spaced apart along the width direction. Each frame bracing column is located between two adjacent gantry frames and its two ends are connected to the adjacent gantry frames respectively. Each frame bracing column includes multiple frame braces, which are spaced apart along the height direction. Each frame brace is located between two adjacent layer operating platforms.

[0014] In one embodiment, the side operating platform includes four layer operating platforms, which are spaced apart along the height direction; wherein the anti-fall platform is located between the two middle layer operating platforms.

[0015] In one embodiment, the layer operation platform includes:

[0016] A support portion is disposed on the frame assembly;

[0017] A platform footboard is mounted on the support portion;

[0018] Multiple platform diagonal braces are arranged at intervals along the width direction. One end of each platform diagonal brace is connected to the support part and the other end is connected to the frame assembly.

[0019] In one embodiment, the layer operation platform further includes:

[0020] Multiple sleeves are disposed at the bottom of the support portion, and the multiple sleeves are spaced apart along the width direction;

[0021] Multiple telescopic rods are respectively associated with multiple sleeves, and the telescopic rods are movably disposed in the corresponding sleeves, and the telescopic rods are movable along the length direction;

[0022] The movable mesh is placed on the platform's footplate.

[0023] In one embodiment, the fall-prevention platform includes:

[0024] Multiple support pillars, one end of which is connected to the frame body, are spaced apart along the width direction and extend along the height direction;

[0025] The platform body is connected to the end of the support column that is furthest from the frame body;

[0026] A bracket is disposed at the bottom of the platform body, the bracket extends along the width direction, and both ends of the bracket extend out of the platform body.

[0027] In one embodiment, the two ends of the bracket extend 50 cm beyond the platform body.

[0028] In one embodiment, the anti-fall platform further includes an anti-fall brace assembly, which is located on both sides of the anti-fall platform. The anti-fall brace assembly includes multiple anti-fall braces, which correspond one-to-one with multiple gantry frames. One end of each anti-fall brace is connected to the corresponding gantry frame, and the other end is connected to the bottom of the platform body.

[0029] In one embodiment, the trolley further includes lighting equipment and a gas monitoring device disposed on the frame assembly.

[0030] In one embodiment, the telescopic rod is 1.2 meters long, and some of the multiple layer operating platforms are 3.2 meters long.

[0031] Secondly, this application also provides a construction method using the underground water-sealed cavern trolley as described above, including:

[0032] Move the trolley to the working face;

[0033] The drilling operation is carried out on the working face through the layer operating platform and the top operating platform of the trolley to obtain multiple blast holes covering the working face, and explosives are loaded into the blast holes and connected to the wires for detonation.

[0034] Anchor bolts are installed into the anchor bolt holes on the working face through the layer operation platform and the top operation platform;

[0035] Grout is injected into the grouting holes of the working face through the layer operation platform and the top operation platform.

[0036] In one embodiment, the installation of anchor bolts into the anchor bolt holes at the working face via the layer operating platform and the top operating platform includes:

[0037] The upper layer operating platform is placed close to the side profile of the working face;

[0038] Pull out the telescopic rod of the lower layer operation platform and install the movable mesh on the telescopic rod;

[0039] The operating platform located below receives the anchor rod from the ground, adjusts the angle of the anchor rod, inserts it into the anchor rod hole at the arching position of the working face, and injects mortar.

[0040] Open the movable mesh of the top operating platform, receive the anchor bolts transferred from the ground on the anti-fall platform and adjust the angle of the anchor bolts, receive the anchor bolts transferred from the anti-fall platform on the top operating platform, insert them into the anchor bolts at the top arch position of the working face and inject mortar.

[0041] Compared with existing technologies, the advantages of this application's embodiments are that by setting up multiple layered operating platforms, various different construction heights are provided for construction personnel. During construction, personnel can select operating platforms at different heights as needed, thereby achieving construction coverage of the entire working face. The trolley of this invention can meet the operational requirements of different construction procedures, saving both the economic cost of renting aerial work platforms and time costs, greatly improving construction efficiency. Furthermore, it eliminates the need for multiple trolleys and aerial work platforms, saving space. By setting up anti-fall platforms, the risk of falling objects from heights is reduced, thereby improving safety. Attached Figure Description

[0042] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0043] Figure 1 This is a front view of an underground water-sealed cavern trolley provided in an embodiment of the present invention;

[0044] Figure 2 yes Figure 1 A front view of the telescopic rod of the underground water-sealed cavern trolley provided in the Chinese embodiment when it is extended;

[0045] Figure 3 yes Figure 1 Side view of the underground water-sealed cavern trolley provided in the Chinese embodiment;

[0046] Figure 4 This is a flowchart of a construction method provided in another embodiment of the present invention;

[0047] Figure 5 yes Figure 4 The trolley construction status diagram provided in the embodiment;

[0048] Figure 6 yes Figure 4 A schematic diagram of the structure during grouting operation provided in the embodiment;

[0049] Figure 7 yes Figure 4 Another structural diagram of the grouting operation provided in the embodiment;

[0050] Figure 8 yes Figure 4 A schematic diagram of the anchor bolt installation provided in the Chinese embodiment.

[0051] Figure label:

[0052] 10. Frame assembly; 110. Portal frame; 120. Frame beam; 130. Frame brace assembly; 1301. Frame brace row; 1302. Frame brace;

[0053] 20. Side operating platform; 210. First-level operating platform; 220. Second-level operating platform; 230. Third-level operating platform; 240. Fourth-level operating platform; 250. Support unit; 270. Platform diagonal brace; 280. Movable mesh panel;

[0054] 30. Top operating platform;

[0055] 40. Fall arrest platform; 410. Support column; 420. Platform body; 430. Bracket; 440. Fall arrest diagonal bracing assembly.

[0056] 50. Anchor bolt;

[0057] 60. Grouting hole. Detailed Implementation

[0058] The invention will now be further described with reference to the accompanying drawings.

[0059] The construction of underground water-sealed caverns includes excavation, support, and grouting operations. Excavation is typically carried out manually with drilling and blasting, assisted by an excavation trolley for drilling and explosive loading. Simultaneously, anchor bolts are installed manually for shotcrete support, and articulated boom lifts and other aerial work platforms are used to assist in installation and grouting. However, existing construction methods suffer from the following problems: limited underground working space, the large space occupied by both aerial work platforms and excavation trolleys, the limited load-bearing capacity of the aerial work platforms (often supporting only two workers), and the need for multiple ascents and descents during construction leading to accumulated wear and tear on the equipment. This results in both low construction efficiency and a low safety factor.

[0060] Example 1

[0061] like Figures 1-3 As shown, this embodiment of the invention provides an underground water-sealed cavern trolley, including a frame assembly 10, a side operating platform 20, a top operating platform 30, and a fall-prevention platform 40; the side operating platforms 20 are respectively disposed on both sides of the frame assembly 10, and the side operating platforms 20 include multiple layer operating platforms, which are spaced apart along the height direction; the top operating platform 30 is disposed on the top of the frame assembly 10; the fall-prevention platform 40 is disposed inside the frame assembly 10, and the fall-prevention platform 40 is located between two adjacent layer operating platforms.

[0062] As can be seen from the above, by setting up multiple operating platforms, various working heights are provided for construction personnel. During construction, personnel can select operating platforms at different heights as needed, thereby achieving construction coverage of the entire working face. The trolley of this invention can meet the operational requirements of different construction processes, saving both the economic cost of renting aerial work platforms and time costs, greatly improving construction efficiency. Furthermore, it eliminates the need for multiple trolleys and aerial work platforms, saving space. The inclusion of a fall-prevention platform 40 reduces the risk of falling objects from heights, thus improving safety.

[0063] It should be noted that, as Figure 1 , Figure 3 As shown, the height direction is parallel to the Z direction, the length direction is parallel to the X direction, the width direction is parallel to the Y direction, and the height, length, and width directions are perpendicular to each other.

[0064] It should also be noted that the distance between two adjacent layer operating platforms in the height direction can be equal or unequal, depending on the specific needs.

[0065] It should also be noted that the side operating platform 20, the top operating platform 30 and the anti-fall platform 40 are welded to the frame assembly 10 respectively.

[0066] It should also be noted that the trolley also includes a staircase welded to the frame assembly 10, through which construction workers can access each floor's operating platform and the top operating platform 30; in addition, handrails are welded onto the staircase to ensure the safety of construction workers going up and down the stairs.

[0067] It should also be noted that the top operating platform 30 is formed by laying a movable mesh 280, which is connected to the frame assembly 10 by means of cable ties, including but not limited to, so as to facilitate the disassembly of the movable mesh 280.

[0068] Example 2

[0069] like Figures 1-3 As shown, the underground water-sealed cavern trolley includes a frame assembly 10, a side operating platform 20, a top operating platform 30, and a fall-prevention platform 40. The side operating platforms 20 are respectively set on both sides of the frame assembly 10, and the side operating platforms 20 include multiple layer operating platforms, which are arranged at intervals along the height direction. The top operating platform 30 is set on the top of the frame assembly 10. The fall-prevention platform 40 is set inside the frame assembly 10, and the fall-prevention platform 40 is located between two adjacent layer operating platforms.

[0070] By setting up multiple layered operating platforms, various working heights are provided for construction workers. During construction, workers can select operating platforms at different heights as needed, thus achieving construction coverage of the entire working face. The trolley of this invention can meet the operational requirements of different construction processes, saving both the economic cost of renting aerial work platforms and time costs, greatly improving construction efficiency. Furthermore, it eliminates the need for multiple trolleys and aerial work platforms, saving space. The inclusion of a fall arrestor platform 40 reduces the risk of falling objects from height, thereby improving safety.

[0071] It should be noted that, as Figure 3 As shown, the height direction is parallel to the Z direction, the length direction is parallel to the X direction, the width direction is parallel to the Y direction, and the height, length, and width directions are perpendicular to each other.

[0072] It should also be noted that the distance between two adjacent layer operating platforms in the height direction can be equal or unequal, depending on the specific needs.

[0073] It should also be noted that the side operating platform 20, the top operating platform 30 and the anti-fall platform 40 are welded to the frame assembly 10 respectively.

[0074] It should also be noted that the trolley also includes a staircase welded to the frame assembly 10, through which construction workers can access each floor's operating platform and the top operating platform 30; in addition, handrails are welded onto the staircase to ensure the safety of construction workers going up and down the stairs.

[0075] It should also be noted that the top operating platform 30 is formed by laying a movable mesh 280, which is connected to the frame assembly 10 by means of cable ties, including but not limited to, so as to facilitate the disassembly of the movable mesh 280.

[0076] like Figures 1-3 As shown, in some embodiments, the frame assembly 10 includes a plurality of gantry frames 110, frame beams 120, and frame bracing groups 130; the plurality of gantry frames 110 are spaced apart along the width direction; the frame beams 120 are connected to the bottom of the plurality of gantry frames 110, and the frame beams 120 are respectively located on both sides of the gantry frames 110; the frame bracing groups 130 are respectively located on both sides of the gantry frames 110, the frame bracing groups 130 include a plurality of frame bracing columns 1301, the plurality of frame bracing columns 1301 are spaced apart along the width direction, the frame bracing columns 1301 are located between two adjacent gantry frames 110 and their two ends are respectively connected to the adjacent gantry frames 110, the frame bracing columns 1301 include a plurality of frame bracing 1302, the plurality of frame bracing 1302 are spaced apart along the height direction, and the frame bracing 1302 are located between two adjacent layer operating platforms.

[0077] By setting the gantry 110, the frame assembly 10 becomes a portal structure, which does not affect the passage of construction equipment and vehicles, and saves space to the maximum extent. The frame beams 120 and the frame bracing group 130 are connected to multiple gantry 110 respectively, which not only makes multiple gantry 110 form a whole, but also improves the overall strength and stability.

[0078] It should be noted that the number of gantry 110 is set according to specific needs. For example, the number of gantry 110 is 4, and the number of frame diagonal bracing columns 1301 set on each side of gantry 110 is 3. In addition, gantry 110 includes a first gantry 110 segment and a second gantry 110 segment welded to both ends of the first gantry 110 segment. The first gantry 110 segment and the second gantry 110 segment include, but are not limited to, I-beams.

[0079] It should also be noted that the frame diagonal brace 1302 is set at an angle, and the frame diagonal brace 1302 has an angle with the width direction, which is greater than 0° and less than 90°; in addition, the angles between two adjacent frame diagonal braces 1302 in the height direction and the width direction can be equal or unequal, and this application does not impose specific restrictions.

[0080] like Figures 1-3 As shown, in some embodiments, the side operating platform 20 includes four layer operating platforms, which are arranged at intervals along the height direction; wherein, the anti-fall platform 40 is located between the two middle layer operating platforms.

[0081] By setting up an anti-fall platform 40 between the two intermediate operating platforms, it can prevent objects from falling from above the trolley and also serve as a buffer platform for personnel to walk on.

[0082] It should be noted that, as Figure 1 As shown, the four operating platforms, from bottom to top in the height direction, are the first operating platform 210, the second operating platform 220, the third operating platform 230, and the fourth operating platform 240. The distance between the first operating platform 210 and the ground is L1, the distance between the first operating platform 210 and the second operating platform 220 is L1, the distance between the second operating platform 220 and the third operating platform 230 is L2, and the distance between the third operating platform 230 and the top operating platform 30 is L3. Among them, L1 is 2200mm, L2 is 1800mm, and L3 is 1100mm.

[0083] It should also be noted that, such as Figure 1 As shown, the anti-fall platform 40 is located between the second-level operating platform 220 and the second-level operating platform 220.

[0084] like Figures 1-3As shown, in some embodiments, the layer operation platform includes a support 250, a platform pedal, and multiple platform braces 270; the support 250 is disposed on the frame assembly 10; the platform pedal is disposed on the support 250; the multiple platform braces 270 are arranged at intervals along the width direction, one end of the platform brace 270 is connected to the support 250 and the other end is connected to the frame assembly 10.

[0085] By setting up the support 250 and platform treads to form a layered operating platform, a walking passage and construction position are provided for construction personnel; by setting up the platform diagonal brace 270, the strength and stability of the layered operating platform are improved.

[0086] It should be noted that the support part 250 is connected to the frame assembly 10 by welding, and the platform tread is a steel mesh, which is also connected to the support part 250 by welding.

[0087] It should also be noted that the platform diagonal brace 270 has an angle with the height direction, which is greater than 0° and less than 90°.

[0088] like Figures 1-3 As shown, in some embodiments, the layer operation platform further includes multiple sleeves, multiple telescopic rods, and a movable mesh; multiple sleeves are disposed at the bottom of the support 250, and the multiple sleeves are spaced apart along the width direction; multiple telescopic rods correspond one-to-one with multiple sleeves, the telescopic rods are movably disposed in the corresponding sleeves, and the telescopic rods can move along the length direction; the movable mesh is placed on the platform pedal.

[0089] By setting up sleeves, telescopic rods, and movable mesh to provide a structural foundation for extending the layer operation platform in the length direction, the telescopic rods can be pulled out from the sleeves and the movable mesh can be unfolded and laid on the telescopic rods, thus extending the layer operation platform in the length direction.

[0090] It should be noted that when the extended working platform is not needed, the movable mesh can be rolled up and placed on the platform tread for storage; when the extended working platform is needed, the movable mesh can be unfolded and laid on the telescopic pole, including but not limited to connecting the movable mesh to the telescopic pole with cable ties, thereby preventing the movable mesh from falling off and improving the safety of construction personnel walking and working.

[0091] It should also be noted that the sleeve has a hollow structure, and the end of the sleeve away from the frame assembly 10 is provided with a through hole so that the telescopic rod can be inserted into the sleeve; in addition, the end of the telescopic rod close to the frame assembly 10 is provided with a limiting member to limit the telescopic rod and control the stroke of the telescopic rod. When the limiting member abuts against the end of the sleeve away from the frame assembly 10, the telescopic rod has been pulled out to its maximum stroke.

[0092] like Figures 1-3As shown, in some embodiments, the fall-prevention platform 40 includes a plurality of support columns 410, a platform body 420, and a bracket 430; one end of the plurality of support columns 410 is connected to the frame body, the plurality of support columns 410 are spaced apart along the width direction, and the support columns 410 extend along the height direction; the platform body 420 is connected to the end of the support columns 410 away from the frame body; the bracket 430 is disposed at the bottom of the platform body 420, the bracket 430 extends along the width direction, and both ends of the bracket 430 extend out of the platform body 420.

[0093] By setting multiple support pillars 410 to install the platform body 420, the reliability of the connection can be improved; by setting a bracket 430, the trolley can be moved, and the loader can move the trolley by lifting the bracket 430.

[0094] It should be noted that the anti-fall body is formed by welding, and the anti-fall body is connected to the frame component 10 by welding.

[0095] It should also be noted that the height of support column 410 is 1835mm.

[0096] In some embodiments, the distance by which both ends of the bracket 430 extend beyond the platform body 420 is 50cm.

[0097] like Figures 1-3 As shown, in some embodiments, the anti-fall platform 40 also includes an anti-fall brace group 440, which is located on both sides of the anti-fall platform 40. The anti-fall brace group 440 includes multiple anti-fall braces, which correspond one-to-one with multiple gantry frames 110. One end of the anti-fall brace is connected to the corresponding gantry frame 110 and the other end is connected to the bottom of the platform body 420.

[0098] The stability, reliability, and strength of the trolley are improved by setting up multiple anti-falling diagonal braces.

[0099] It should be noted that the anti-fall diagonal brace has an angle with the height direction, which is greater than 0° and less than 90°.

[0100] In some embodiments, the trolley also includes lighting equipment and a gas monitoring device disposed on the frame assembly 10.

[0101] Lighting equipment is installed to ensure illumination during construction, and gas monitoring devices are used to monitor the air quality inside the tunnel at any time. An alarm is issued when the air quality inside the tunnel does not meet the standards, reminding construction personnel to evacuate in time.

[0102] It should be noted that lighting equipment can be installed at different locations on the trolley as needed to provide illumination for the working environment.

[0103] It should also be noted that the trolley also includes a power distribution box and a transformer. In addition, the construction site provides a 220V power supply. The power distribution box is electrically connected to the transformer and the 220V power supply. The transformer is electrically connected to the lighting fixtures. The transformer converts the 220V voltage to 36V voltage to power the lighting fixtures.

[0104] It should also be noted that the gas detection device is located at the front of the trolley, which can detect the air quality at any time during construction, thereby improving the safety of construction.

[0105] It should also be noted that the trolley also includes an axial flow fan installed on top of the frame assembly 10, which serves to dissipate heat and reduce dust, thereby improving the working environment for personnel.

[0106] In some embodiments, the telescopic rod is 1.2 meters long, and some of the multi-layer operating platforms are 3.2 meters long.

[0107] It should be noted that the lengths of the multiple layer operation platforms are not exactly the same; the length of the upper layer operation platform is shorter than the length of the lower layer operation platform. For example, as shown... Figure 1 As shown, the lengths of the first-layer operating platform 210, the second-layer operating platform 220, and the third-layer operating platform 230 are all equal, at 3.2 meters. The length of the fourth-layer operating platform 240 is 2 meters, which is less than the length of the first-layer operating platform 210.

[0108] Example 3

[0109] like Figure 4 As shown, this embodiment of the invention provides a construction method, characterized by using an underground water-sealed cavern trolley as described in any embodiment, including:

[0110] S101: Move the trolley to the working face;

[0111] It should be noted that the tunnel face is a term used in tunnel construction. It refers to the working face that is continuously advanced during tunnel excavation (in coal mining, mining, or tunnel engineering), and is the interface between the excavated and unexcavated rock strata.

[0112] It should also be noted that the outline of the working face is arched, and this invention includes, but is not limited to, moving the trolley to the working face using a loader; such as Figure 4 As shown, the trolley is moved to a suitable position on the working face, that is, the distance between the trolley and the left contour line of the working face and the distance between the trolley and the right contour line of the working face are equal, and the distance between the top operating platform 30 of the trolley and the top arch position of the working face can ensure that a person of height can pass through.

[0113] S102: Drilling operations are performed on the working face using the layer operating platform and top operating platform 30 of the trolley to obtain multiple blast holes covering the working face, and explosives are loaded into the blast holes and connected to the holes for detonation.

[0114] It should be noted that drilling operations on the working face using the trolley's layer operating platform and top operating platform 30 include: pulling out the telescopic rod of the layer operating platform and installing a movable mesh on the telescopic rod. This completes the extension of the layer operating platform in the length direction.

[0115] It should also be noted that construction workers can drill holes at multiple locations on the working face from the layer operating platform and the top operating platform 30; after the explosives are loaded and the wiring is completed, the trolley is moved to a safe location at least 200m away from the working face, and then the detonation is carried out.

[0116] It should also be noted that the trolley includes a first-level operating platform 210, a second-level operating platform 220, a third-level operating platform 230, and a fourth-level operating platform 240. The lengths of the first-level operating platform 210, the second-level operating platform 220, and the third-level operating platform 230 are all 3.2 meters, and the length of the fourth-level operating platform 240 is 2 meters. By installing a movable mesh through a telescopic rod, the lengths of the first-level operating platform 210, the second-level operating platform 220, and the third-level operating platform 230 can be extended by 1.2 meters, and the length of the fourth-level operating platform 240 can be extended by 0.8 meters.

[0117] S103: Anchor bolts 50 are installed into the anchor bolt holes of the working face through the layer operation platform and the top operation platform 30.

[0118] In some embodiments, the installation of anchor bolts 50 into the anchor bolt holes on the working face via the layer operating platform and the top operating platform 30 includes:

[0119] The upper layer operating platform is placed close to the side profile of the working face;

[0120] Pull out the telescopic rod of the lower layer operation platform and install the movable mesh on the telescopic rod;

[0121] The lower layer operating platform receives the anchor bolt 50 from the ground, adjusts the angle of the anchor bolt 50, inserts it into the anchor bolt hole at the arching position of the working face, and injects mortar.

[0122] Open the movable mesh of the top operating platform 30, receive the anchor rod 50 from the ground on the anti-fall platform 40 and adjust the angle of the anchor rod 50, receive the anchor rod 50 transferred from the anti-fall platform 40 on the top operating platform 30, insert it into the anchor rod 50 at the top arch position of the working face and inject mortar.

[0123] It should be noted that the installation of anchor bolts 50 by the trolley is divided into the top arch position and the arching position of the working face. The arching position of the working face includes the left arching position and the right arching position. Therefore, the upper layer operating platform can be placed close to the right side outline of the working face first to complete the installation of anchor bolts 50 at the right arching position. Then, the upper layer operating platform can be placed close to the left side outline of the working face to complete the installation of anchor bolts 50 at the left arching position.

[0124] It should also be noted that the telescopic rod of the lower layer operating platform is pulled out and a movable mesh is installed on the telescopic rod because when the upper layer operating platform is close to the side contour line of the working face, the distance between the lower layer operating platform and the side contour line of the working face is too far, making it difficult for construction workers to carry out construction smoothly.

[0125] It should also be noted that when there are four layers of operating platform, the upper layer operating platform refers to the third layer operating platform 230 and the fourth layer operating platform 240, and the lower layer operating platform refers to the first layer operating platform 210 and the second layer operating platform 220.

[0126] When installing the anchor bolts 50 at the arching position of the working face, construction personnel stand on the first operating platform 210, the second operating platform 220, the third operating platform 230, the fourth operating platform 240, and the top operating platform 30, respectively. When working on the first and second operating platforms 210 and 220, the anchor bolts 50 can be directly passed from the ground. The anchor bolts 50 pass through the gaps between the gantry frames, and after adjusting the angle of the anchor bolts 50, mortar can be injected to complete the installation. When working on the third and fourth operating platforms 230 and 240, the position of the trolley can be adjusted as needed to ensure that there is a gap between the third and fourth operating platforms 230 and the outline of the working face, so that the anchor bolts 50 can be passed smoothly.

[0127] like Figure 8As shown, when installing the anchor bolt 50 at the top arch position of the working face, the work is carried out on the top operating platform 30. Due to the limited distance between the top operating platform 30 and the top arch position, the anchor bolt 50 cannot be adjusted at the angle to be installed in the anchor bolt hole. Therefore, it is necessary to open the movable mesh on the top operating platform 30 to form an opening. The anchor bolt 50 is first transferred to the anti-fall platform 40. One construction worker stands on the anti-fall platform 40 and adjusts the angle to hand the anchor bolt 50 from the opening to the construction worker on the top operating platform 30. The two construction workers work together to insert the anchor bolt 50 into the anchor bolt hole to complete the installation of the anchor bolt 50.

[0128] S104: Grout is injected into the grouting hole 60 of the working face through the layer operation platform and the top operation platform 30.

[0129] It should be noted that the grouting holes 60 are arranged at intervals along the outline of the working face. Construction personnel select appropriate operating platforms and top operating platforms 30 according to the position of the grouting holes 60 to perform operations such as installing plugs, connecting grouting pipes, and caulking after grout leakage.

[0130] It should also be noted that grouting includes pre-grouting and post-grouting. Pre-grouting is carried out before blasting at the tunnel face, and blasting is carried out after pre-grouting at the tunnel face. Post-grouting is carried out after the anchor bolts are installed. Of course, if water comes out of the anchor bolt holes, post-grouting needs to be carried out before the anchor bolts are installed.

[0131] Pre-grouting operations include grouting operations at the working face of the central pilot tunnel and grouting operations at the working face of the enlarged excavation section;

[0132] like Figure 7 As shown, during the grouting operation at the working face of the central tunnel, the telescopic rods of the third-level operating platform 230 and the fourth-level operating platform 240 are pulled out, and movable mesh is installed on the telescopic rods. Construction workers stand on the third-level operating platform 230, the fourth-level operating platform 240, and the top operating platform 30 to perform grouting, thereby covering all the grouting holes 60 in the central tunnel.

[0133] Grouting operations at the face of the excavated section include grouting on the left half and grouting on the right half. Taking the grouting on the right half as an example, the trolley is moved so that the third-level operating platform 230 and the fourth-level operating platform 240 are only close to the right outline of the face of the excavated section. The telescopic rods of the first-level operating platform 210 and the second-level operating platform 220 are pulled out, and movable mesh is installed on the telescopic rods. Construction personnel stand on the first-level operating platform 210, the second-level operating platform 220, the third-level operating platform 230, and the fourth-level operating platform 240 to perform grouting, thereby covering all the grouting holes 60 of the excavated section.

[0134] In addition, the grouting hole 60 in the pre-grouting operation is not the same grouting hole 60 as the grouting hole 60 in the post-grouting operation.

[0135] It should also be noted that the central pilot tunnel has a length dimension of 12 meters, is arched, has a middle height of 9 meters, and a cross-sectional area of ​​103.03㎡; the enlarged excavation sections are located on both sides of the central pilot tunnel, with each enlarged excavation section having a length dimension of 4 meters and a cross-sectional area of ​​22.69㎡.

[0136] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A trolley for underground water-sealed caverns, characterized in that, include: Framework components; Side operation platforms are respectively disposed on both sides of the frame component. The side operation platform includes multiple layer operation platforms, which are arranged at intervals along the height direction. A top operating platform is located at the top of the frame components; A fall-prevention platform is disposed within the frame assembly, and the fall-prevention platform is located between two adjacent layer operation platforms.

2. The underground water-sealed cavern trolley according to claim 1, characterized in that, The framework components include: Multiple gantry frames are arranged at intervals along the width direction; A frame beam is connected to the bottom of the plurality of gantry frames, and the frame beam is located on both sides of the gantry frames respectively; A frame bracing group is located on both sides of the gantry. The frame bracing group includes multiple frame bracing columns, which are spaced apart along the width direction. Each frame bracing column is located between two adjacent gantry frames and its two ends are connected to the adjacent gantry frames respectively. Each frame bracing column includes multiple frame braces, which are spaced apart along the height direction. Each frame brace is located between two adjacent layer operating platforms.

3. The underground water-sealed cavern trolley according to claim 2, characterized in that, The side operating platform includes four layer operating platforms, which are arranged at intervals along the height direction; wherein, the anti-fall platform is located between the two middle layer operating platforms.

4. The underground water-sealed cavern trolley according to claim 3, characterized in that, The layer operation platform includes: A support portion is disposed on the frame assembly; A platform footboard is mounted on the support portion; Multiple platform diagonal braces are arranged at intervals along the width direction. One end of each platform diagonal brace is connected to the support part and the other end is connected to the frame assembly.

5. The underground water-sealed cavern trolley according to claim 4, characterized in that, The layer operation platform also includes: Multiple sleeves are disposed at the bottom of the support portion, and the multiple sleeves are spaced apart along the width direction; Multiple telescopic rods are respectively associated with multiple sleeves, and the telescopic rods are movably disposed in the corresponding sleeves, and the telescopic rods are movable along the length direction; The movable mesh is placed on the platform's footplate.

6. The underground water-sealed cavern trolley according to claim 5, characterized in that, The fall-prevention platform includes: Multiple support pillars, one end of which is connected to the frame body, are spaced apart along the width direction and extend along the height direction; The platform body is connected to the end of the support column that is furthest from the frame body; A bracket is disposed at the bottom of the platform body, the bracket extends along the width direction, and both ends of the bracket extend out of the platform body.

7. The underground water-sealed cavern trolley according to claim 6, characterized in that, The distance at both ends of the bracket extending beyond the platform body is 50cm.

8. The underground water-sealed cavern trolley according to claim 6, characterized in that, The anti-fall platform also includes anti-fall bracing assemblies, which are located on both sides of the anti-fall platform. Each anti-fall bracing assembly includes multiple anti-fall braces, which correspond one-to-one with multiple gantry frames. One end of each anti-fall brace is connected to the corresponding gantry frame, and the other end is connected to the bottom of the platform body.

9. The underground water-sealed cavern trolley according to claim 8, characterized in that, The trolley also includes lighting equipment and a gas monitoring device mounted on the frame assembly.

10. A construction method, characterized in that, Using the underground water-sealed cavern trolley as described in any one of claims 1-9, comprising: Move the trolley to the working face; The drilling operation is carried out on the working face through the layer operating platform and the top operating platform of the trolley to obtain multiple blast holes covering the working face, and explosives are loaded into the blast holes and connected to the wires for detonation. Anchor bolts are installed into the anchor bolt holes on the working face through the layer operation platform and the top operation platform; Grout is injected into the grouting holes of the working face through the layer operation platform and the top operation platform.

11. The construction method according to claim 10, characterized in that, The installation of anchor bolts into the anchor bolt holes at the working face via the layer operating platform and the top operating platform includes: The upper layer operating platform is placed close to the side profile of the working face; Pull out the telescopic rod of the lower layer operation platform and install the movable mesh on the telescopic rod; The operating platform located below receives the anchor rod from the ground, adjusts the angle of the anchor rod, inserts it into the anchor rod hole at the arching position of the working face, and injects mortar. Open the movable mesh of the top operating platform, receive the anchor rod from the ground on the anti-fall platform and adjust the angle of the anchor rod, receive the anchor rod transferred from the anti-fall platform on the top operating platform, insert it into the anchor rod at the top arch position of the working face and inject mortar.

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