CN113846654B - Barrier removing device and barrier removing method for deep pipeline barrier removing - Google Patents
Barrier removing device and barrier removing method for deep pipeline barrier removing Download PDFInfo
- Publication number
- CN113846654B CN113846654B CN202010595452.4A CN202010595452A CN113846654B CN 113846654 B CN113846654 B CN 113846654B CN 202010595452 A CN202010595452 A CN 202010595452A CN 113846654 B CN113846654 B CN 113846654B
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- obstacle
- steel
- clearing
- steel sleeve
- deep
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses an obstacle clearing device and an obstacle clearing method for clearing obstacles in a deep pipeline. One embodiment of the obstacle clearing device for clearing obstacles in deep pipelines comprises: steel bushing case strutting arrangement, its characterized in that, steel bushing case strutting arrangement includes: a steel panel structure comprising a front panel and a side panel, wherein the side panel is between the front panels and the front panel and the side panel are welded into a ring; and the supporting structure is arranged inside the steel sleeve box supporting device and is welded and fixed with the front panel. The invention can effectively solve the risk of collapse of the underground diaphragm wall groove, ensure the safe and stable operation environment in the steel sleeve box, shorten the clearance period of the deep pipeline in the construction process of the underground diaphragm wall, reduce the limit of the clearance place and reduce the clearance economic cost.
Description
Technical Field
The invention relates to the technical field of engineering construction, in particular to an obstacle clearing device and an obstacle clearing method for clearing obstacles of a deep pipeline.
Background
In recent years, with the rapid expansion of urban scale and economic construction in China, urban rail transit construction has rapidly developed. Rail transit is one of the main transportation means of cities, and the construction of underground engineering of rail transit is often restricted by urban arterial roads, complicated underground pipelines and barriers in commercial areas. Aiming at deep hard underground pipelines and barriers in the construction process of the underground diaphragm wall, the prior art generally adopts Larson steel sheet piles and surrounding purlin supports to excavate to the bottom of the barriers, or adopts a slope-enlarging large excavation mode to excavate to the bottom of the barriers, then adopts manpower to clean the barriers, and finally adopts the conventional working procedure to construct the underground diaphragm wall by earth backfilling. However, in the prior art, a Larson steel sheet pile and an enclosing purlin are adopted to support the deep barrier, so that the construction period is long and the economic cost is high; the deep barriers are cleaned by adopting a slope-enlarging excavation mode, the construction period is long, and the problems of high field requirement, field limitation and the like exist because of the requirement of large-area slope-enlarging excavation.
Disclosure of Invention
In view of the above, the embodiment of the invention provides an obstacle clearance device and an obstacle clearance method for clearing obstacles in a deep pipeline, which realize the steel sleeve box type obstacle clearance method for the deep pipeline by utilizing the steel sleeve box to support the obstacles in the deep pipeline, thereby solving the problems in the prior art, shortening the obstacle clearance period of the deep pipeline in the construction process of an underground diaphragm wall, reducing the limit of the obstacle clearance field, reducing the economic cost of obstacle clearance, and enhancing the safety and convenience of obstacle clearance.
To achieve the above object, according to an aspect of the embodiments of the present invention, there is provided an obstacle clearing device for clearing an obstacle in a deep pipe, comprising: steel bushing case strutting arrangement, its characterized in that, this steel bushing case strutting arrangement includes: a steel panel structure comprising a front panel and a side panel, wherein the side panel is between the front panels and the front panel and the side panel are welded into a ring; and the supporting structure is arranged inside the steel sleeve box supporting device and is welded and fixed with the front panel.
Preferably, the spacing between the side panels is no greater than the width of the front panel.
Preferably, the length of the side panels is less than the length of the front panel.
Preferably, the obstacle clearing device for clearing obstacles of deep pipes further comprises: and the reserved groove is arranged at the bottom of the steel sleeve box supporting device.
Preferably, the obstacle clearing device for clearing obstacles of deep pipes further comprises: and the hoisting hole is arranged at the top of the steel sleeve box supporting device.
Preferably, the obstacle clearing device for clearing obstacles of deep pipes further comprises: and a placing hole which is arranged at the top of the steel sleeve supporting device.
Preferably, the support structure comprises a first number of channel longitudinal channel supports arranged in the width direction inside the steel box supporting means, wherein the center-to-center spacing between the laterally arranged channel longitudinal supports is a first spacing and the center-to-center spacing between the centrally arranged channel longitudinal supports is a second spacing.
Preferably, the support structure comprises a second number of lateral channel supports arranged in the length direction inside the steel box support device, wherein the center-to-center spacing between the lateral channel supports is a third spacing, and the center of each of the top and bottom most edge lateral channel supports of the steel box support device is a fourth spacing from the outer edge of the steel box support device.
Preferably, the length of the support structure is the same as the width of the side panels.
To achieve the above object, according to another aspect of the embodiments of the present invention, there is provided an obstacle clearing method of an obstacle clearing device for clearing an obstacle in a deep pipe, comprising the steps of: compiling a special construction scheme through the position and depth obtained by exploring, and prefabricating a steel sleeve box according to a calculation book; inserting locking pipes at two sides of the excavated groove, hanging a prefabricated steel sleeve box supporting device, and fixing the position of the steel sleeve box supporting device by using a carrying pole; pumping and exhausting the slurry in the groove; manually entering a steel sleeve box supporting device to clear the obstacle to the bottom of the obstacle; and (5) after the obstacle clearance is finished, recharging the slurry, and pulling out the steel sleeve box supporting device and the locking pipe.
One or more embodiments of the above-described invention have at least the following advantages or benefits at the same time:
firstly, the deep pipeline steel sleeve box type obstacle clearing method is adopted, the steel sleeve box is only required to be hung in a trench of a diaphragm wall, the obstacle clearing operation is simple and convenient, compared with a Larson pile construction method, the method reduces the steel sheet pile driving, pulling out process, enclosing purlin and support installing and removing process, and compared with a large excavation construction method, the method reduces the large area earth excavation amount and backfill amount, and further the obstacle clearing period can be greatly shortened.
Secondly, the steel sleeve box is only required to be hung in the underground diaphragm wall groove, the obstacle is manually cleared, then the steel sleeve box can be recovered and recycled, compared with a Larson pile construction method, the invention reduces the renting cost and the mechanical setting cost of Larson piles, steel purlins and steel supports, and compared with a large excavation construction method, the invention reduces the mechanical cost of earth excavation and backfilling; the cost of transportation of the earthwork and the internal barge can be greatly saved.
Third, the steel sleeve box of the invention has small whole volume and small occupied area, and compared with the large-excavation type obstacle clearing, the invention does not need large-area excavation, thereby reducing the limit of the obstacle clearing area.
Fourth, the invention is lowered into the trench of the underground diaphragm wall through the prefabricated steel sleeve box, is used for bearing the trench wall soil pressure, ensures the safe and stable working environment in the steel sleeve box, ensures the smooth implementation of the deep barrier clearance operation, and enhances the safety of the barrier clearance operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:
fig. 1 is a schematic view showing the overall structure of a steel jackbox support device of an obstacle clearing device for clearing obstacles in deep pipes according to an embodiment of the present invention.
Fig. 2 is a perspective view of a steel jackbox support apparatus of an obstacle clearing apparatus for clearing an obstacle in a deep pipe according to an embodiment of the invention.
Fig. 3 is a side view of a steel jackbox support assembly of an obstacle clearance device for deep pipe obstacle clearance in accordance with an embodiment of the invention.
Fig. 4 is a front view of a steel jackbox support apparatus for a deep pipe obstacle clearing apparatus in accordance with an embodiment of the present invention.
Fig. 5 is a schematic plan view of a steel jackbox support apparatus for an obstacle clearing apparatus for deep pipe obstacle clearing in accordance with an embodiment of the invention.
Fig. 6a is a schematic view of welding a support structure of a steel casing support device of an obstacle clearing device for clearing obstacles in deep ducts with a frontal plate according to an embodiment of the invention.
Fig. 6b is an enlarged view of the welding of the support structure of the steel casing support device of the obstacle clearing device for clearing obstacles in deep ducts with the front panel according to an embodiment of the invention.
Fig. 7 is a flowchart of an obstacle clearing method of an obstacle clearing device for clearing an obstacle in a deep pipe according to an embodiment of the invention.
Fig. 8 is a longitudinal bending moment diagram of a steel jackbox support apparatus of an obstacle clearing apparatus for clearing an obstacle in a deep pipe according to an embodiment of the invention.
Fig. 9 is a transverse bending moment diagram of a steel jackbox support apparatus for an obstacle clearing apparatus for deep pipe obstacle clearing in accordance with an embodiment of the invention.
FIG. 10 is a simulation of the extent of buckling of RISA-2D steel panels of a steel housing supporting device of an obstacle clearing device for clearing obstacles in deep ducts, according to an embodiment of the invention.
Reference numerals:
101-reserving a groove; 102-a front panel; 103-side panels; 104-a support structure; 201-lifting holes; 202-a resting hole; 501-fore shaft tube.
Detailed Description
Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, in which various details of the embodiments of the present invention are included to facilitate understanding, and are to be considered merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the positional relationship of the various components with respect to one another in the vertical, vertical or gravitational directions.
The invention relates to an obstacle clearing operation of deep pipelines and obstacles in the construction process of an underground engineering enclosure structure underground diaphragm wall. According to the invention, the groove wall soil pressure is transmitted to the steel sleeve supporting system through the prefabricated steel sleeve, so that the risk of collapse of the underground diaphragm wall groove is effectively solved, the safe and stable working environment in the steel sleeve is ensured, and meanwhile, the obstacle clearing work of the deep pipeline and the obstacle is effectively completed in a short construction period with low cost.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
According to an aspect of an embodiment of the present invention, the present invention provides an obstacle clearing device for clearing obstacles in deep pipes based on fig. 1 to 6 b. The invention relates to an obstacle clearing device for clearing obstacles of a deep pipeline, which mainly comprises: steel bushing case strutting arrangement, its characterized in that, this steel bushing case strutting arrangement includes: a steel panel structure comprising a front panel and a side panel, wherein the side panel is between the front panels and the front panel and the side panel are welded into a ring; and the supporting structure is arranged inside the steel sleeve box supporting device and is welded and fixed with the front panel.
Fig. 1 is a schematic view showing the overall structure of a steel jackbox support device of an obstacle clearing device for clearing obstacles in deep pipes according to an embodiment of the present invention. Fig. 2 is a perspective view of a steel jackbox support apparatus of an obstacle clearing apparatus for clearing an obstacle in a deep pipe according to an embodiment of the invention.
As shown in fig. 1 and 2, the obstacle clearing device for clearing obstacles of deep pipes includes a steel casing support device 1, and the steel casing support device 1 may include a steel panel structure, which may include a front panel 102 and a side panel 103, wherein the side panel 103 may be between the front panels 102, and the front panel 102 and the side panel 103 may be welded in a ring shape. For example, the front panel 102 may be welded to the side panels 103 in a ring shape using fillet welding. Side panels 103 may be welded to front panel 102 in a ring shape using fillet welding. More specifically, front panel 102 and side panel 103 are welded in a ring using a 6mm fillet weld.
The steel box support device 1 may further comprise a support structure 104, the support structure 104 may be inside the steel box support device 1, and the support structure 104 may be welded to the front panel 102. For example, the support structure 104 and the front panel 102 may also be secured using fillet welding. More specifically, the support structure 104 and the front panel 102 may also be welded securely using a 6mm fillet weld.
As can be seen from fig. 1 and 2, the left and right side panels 103 may be between the upper and lower front panels 102. And the spacing between the two side panels 103 may be no greater than the width of the two front panels 102 for proper work surface and proper economic cost considerations. Specifically, when the width of the front panel 102 is larger than the pitch of the side panels 103, each side of the front panel 102 is respectively spaced a distance more than the side panels 101 to facilitate welding, ensuring welding quality.
Further, the thicknesses of the front plate 102 and the side plate 103 can be the same, so that convenience in material drawing and operation can be ensured, the steel hardness is the same, and the safety is enhanced. And the length of the side panel 103 can be smaller than that of the front panel 102, and accordingly, a space for forming the reserved groove 101 is reserved at the bottom of the front panel 102.
Further, the spacing between the two front panels 102 may be the same as the width of the side panels 103. The sum of the distance between the two front plates and the thickness of the two front plates is equal to the thickness of the ground connecting wall, so as to ensure that the steel sleeve box supporting device is normally placed in the ground connecting wall groove. This feature will be further described later in conjunction with the detailed description.
As shown in fig. 1, the pregroove 101 may be at the bottom of the steel jacket supporting device 1. The reserved groove 101 with a certain size can be formed in the bottom of the steel plate of the steel sleeve supporting device 1 according to the pipeline size and the actual measurement position, and the reserved groove 101 is used for placing a waste pipeline, so that obstacle clearance operation of obstacles is facilitated. Specifically, because the pipeline obstacle clearing machine can only excavate to the top of the pipeline, the top of the pipeline needs to be excavated manually to the bottom of the pipeline, if the reserved groove 101 is not arranged in the process of manually clearing soil, the soil from the top of the pipeline to the bottom around the groove wall can collapse to influence the obstacle clearing operation, and the earthwork steel sleeve box in the pipeline area can still play a supporting role after the reserved groove is arranged.
As shown in fig. 1 and 2, the lifting hole 201 may be at the top of the steel box supporting means 1. For example, the lifting hole 201 may be on top of the front panel 102 of the steel box support device 1. The resting holes 202 may be on top of the steel box support means 1. For example, the resting holes 202 may be on top of the front panel 102 of the steel box support device 1. The lifting hole 201 and the placing hole 202 are mainly used for facilitating lifting and fixing the steel sleeve supporting device 1. As can be seen from fig. 2, the lifting hole 201 may be above the resting hole 202 as seen in the length direction of the steel box supporting means 1. More specifically, the lifting hole 201 may be directly above the resting hole 202. The diameter of the resting hole 202 may be different from the diameter of the lifting hole 201. For example, the diameter of the resting hole 202 is larger than the diameter of the lifting hole 201. The lifting hole 201 mainly facilitates lifting the steel box supporting device 1, and the resting hole 202 mainly penetrates a resting shoulder pole (not shown) on the ground to fix the steel box supporting device 1.
As shown in fig. 1 and 2, the support structure 104 includes a first number of lane longitudinal lane supports disposed in the width direction inside the steel box supporting apparatus 1, wherein the center-to-center spacing between the laterally disposed longitudinal lane supports is a first spacing and the center-to-center spacing between the centrally disposed longitudinal lane supports is a second spacing. Specifically, the second pitch is different in size from the first pitch. Further, the second pitch is larger than the first pitch. Specifically, the second distance is large to provide the necessary obstacle clearing operation surface, and the distance is set to meet the calculation requirement.
The support structure 104 comprises a second number of lateral channel supports arranged in the length direction inside the steel box support device 1, wherein the center-to-center spacing between the lateral channel supports is the same as the third spacing, and the centers of the top and bottom extreme edge lateral channel supports of the steel box support device are each the same as the spacing from the outer edge of the steel box support device, and the spacing of the centers of the top and bottom extreme edge lateral channel supports of the steel box support device are each defined as the fourth spacing from the outer edge of the steel box support device. The third pitch is of a different size than the fourth pitch. Further, the fourth pitch is smaller than the third pitch. The space design can enable the steel sleeve supporting device to meet the minimum requirements of design calculation.
Specifically, the first number and the second number may be different. Further, the first number may be smaller than the second number. Still further, the ratio of the first number to the second number may be 1:2.
Specifically, as shown in fig. 2, the left and right outermost longitudinal lane supports may be adjacent to both side panels 103, respectively, but neither is in direct contact with both side panels 103.
The spacing between the front panels 102 may be the same as the width of the side panels 103. The length of the support structure 104 may also be the same as the width of the side panels 103, thereby ensuring that the support structure 104 is perpendicular to the front panel 102, ensuring proper force and enhancing the safety of the clearance. As previously described, the support structure 104 may be welded to the front panel 102.
Next, the above description will be described in more detail and in more detail with reference to fig. 3 and 4, further in conjunction with examples of embodiments. Fig. 3 is a side view of a steel jackbox support assembly of an obstacle clearance device for deep pipe obstacle clearance in accordance with an embodiment of the invention. Fig. 4 is a front view of a steel jackbox support apparatus for a deep pipe obstacle clearing apparatus in accordance with an embodiment of the present invention.
As shown in fig. 3 and 4, in an embodiment of the present invention, for example, the front panel 102 may be a Q235 steel plate with a plane size of 230×800cm and a thickness of 2cm, and may be welded with the side panel 103 into a ring shape by fillet welding. For example, side panels 103 may be formed from a sheet of Q235 steel having a planar dimension of 76 x 740cm and a thickness of 2cm, and may be formed into a loop with front panel welds 102 using fillet welds.
The spacing between the two side panels 103 may be no greater than the width of the two front panels 102. As an example, the spacing between two side panels 103 is 220cm, which is less than the width 230cm of two front panels 102, for proper working surface and proper economic cost considerations. Specifically, this design is due to the fact that the obstruction line diameter is, for example, 30cm, and the front panel is 230cm wide in view of a suitable working surface, economic cost and the like, so that when the front panel 102 is 230cm wide and the distance between the side panels 103 is 220cm larger, each side of the front panel 102 is 5cm more than each side panel 101 to facilitate welding, welding quality is ensured, and the width of the working surface is 220cm.
Further, as an example, the spacing 76cm between the two front panels 102 may be the same as the width 76cm of the side panels 103. The sum of the distance 76cm between the two front plates and the thickness 2cm of the two front plates is equal to 80cm of the thickness of the ground connecting wall, so as to ensure that the steel box supporting device is normally placed in the ground connecting wall groove. That is, the thickness of the ground connecting wall of the project related to the invention is 80cm, in order to ensure the normal lowering of the steel sleeve box, the net distance between the two front plates needs to be controlled at 76cm, and the sum of the thicknesses of the two front plates is equal to the thickness of the ground connecting wall, namely 76cm+2cm+2cm=80 cm. Therefore, the invention can also ensure bearing the soil pressure of the groove wall, ensure the safe and stable working environment in the steel sleeve box, effectively solve the risk of collapse of the groove of the underground diaphragm wall and ensure smooth implementation of the deep barrier clearance operation.
Further, the thicknesses of the front plate 102 and the side plate 103 may be the same, for example, both are 2cm, so that convenience in material drawing, convenience in operation, and the same steel hardness can be ensured, and safety is enhanced. Also, for example, the length 740cm of the side panel 103 may be smaller than the length 800cm of the front panel 102, and accordingly, a space for forming the reserved groove 101 is left at the bottom of the front panel 102. As an example, the aspect ratio value of the pregroove 101 may be 2:1, for example. Further, the size of the pregroove may be e.g. 60 x 30cm, i.e. 60cm long and 30cm wide. The size of the reserved groove can be adjusted according to the pipeline size and the actual measurement position, so that the reserved groove 101 is used for placing a waste pipeline, and obstacle clearance operation of obstacles is facilitated. This is because: because pipeline clearance machinery can only excavate to the pipeline top, pipeline top to pipeline bottom need artifical excavation, if not establish the artifical in-process of clearing soil of reservation groove, the soil side of pipeline top to bottom around the cell wall probably collapses and influences the operation of clearing the obstacle, and the regional earthwork steel sleeve case of pipeline still can play the supporting role after the reservation groove is seted up.
As shown in fig. 4, for example, the lifting hole 201 may be at the top of the front panel 102. For example, the resting holes 202 may be on top of the front panel 102. The number of the hanging holes 201 and the resting holes 201 may be the same. For example, the number of the hanging hole 201 and the resting hole 201 may be 4. In the vertical direction of fig. 4, i.e., as seen in the length direction of the steel box supporting means 1, the hanging hole 201 may be above the resting hole 202, more specifically, the hanging hole 201 may be directly above the resting hole 202. The diameter of the resting hole 202 may be different from the diameter of the lifting hole 201. More specifically, the diameter of the resting hole 202 is larger than the diameter of the lifting hole 201. More preferably, for example, the ratio of the diameter of the resting hole 202 to the diameter of the lifting hole 201 is 2:1. As an example, as shown in fig. 4, the resting hole 202 has a diameter of 10cm and a radius of 5cm, and the hanging hole 201 has a diameter of 5cm and a radius of 2.5cm. The lifting hole 201 mainly facilitates lifting the steel box supporting device 1, and the resting hole 202 mainly penetrates a resting shoulder pole (not shown) on the ground to fix the steel box supporting device 1.
As shown in fig. 4, the distance of the center of the lifting hole 201 from the top edge of the front panel may be different from the distance of the center of the resting hole 202 from the top edge of the front panel. Preferably, for example, the ratio of the distance of the center of the lifting hole 201 from the top edge of the front panel to the distance of the center of the resting hole 202 from the top edge of the front panel may be 1:2. For example, the center of the lifting hole 201 is 10cm from the top edge of the front panel, while the center of the resting hole 202 is 20cm from the top edge of the front panel.
As shown in fig. 4, the support structure 104 may include 4 longitudinal channel supports disposed in the width direction inside the steel box support device 1, as an example. In the width direction of fig. 4, the center-to-center spacing between the laterally disposed longitudinal lane supports is a first spacing, and the center-to-center spacing between the centrally disposed longitudinal lane supports is a second spacing. Specifically, the second pitch is different in size from the first pitch. Further, the second pitch is larger than the first pitch. Specifically, the second distance is large to provide the necessary obstacle clearing operation surface, and the distance is set to meet the calculation requirement. As an example, the ratio of the first pitch to the second pitch may be 1:3. More specifically, for example, the first pitch is 40cm on both the left and right sides, and the second pitch is 120cm.
Further, for example, the support structure 104 may include 8 lateral channel supports disposed lengthwise inside the steel box support device 1, wherein a center-to-center spacing between the lateral channel supports is a third spacing and a center of each of the top and bottom extreme edge lateral channel supports of the steel box support device is a fourth spacing from an outer edge of the steel box support device. The third pitch may be different in size from the fourth pitch. Further, the fourth pitch may be smaller than the third pitch. The space design can enable the steel sleeve supporting device to meet the minimum requirements of design calculation. As an example, the ratio of the third pitch to the fourth pitch may be, for example, 2:1. More specifically, for example, the third pitches are each 100cm, and the fourth pitch is 50cm.
For example, the length 76cm of the support structure 104 may be the same as the width 76cm of the side panels 103, thereby ensuring that the support structure 104 is perpendicular to the front panel 102, ensuring proper force and enhancing the safety of the clearance.
For example, the support structure 104 may be a channel steel. More specifically, the support structure 104 may be a 14b channel (i.e., model 1 in fig. 4).
For example, as shown in fig. 4, the left and right outermost longitudinal channel supports may be adjacent to both side panels 103, respectively, but neither is in direct contact with both side panels 103. The left and right longitudinal channel supporting pieces are symmetrically arranged in the steel sleeve supporting device 1. Specifically, for example, as shown in fig. 4, the center of the second longitudinal lane support is 55cm from the left side edge of the front panel 102 (sum of 15cm plus 40 cm) as seen from the left-to-right direction of fig. 4. The center of the third longitudinal lane support lane is 55cm from the right edge of the front panel 102. Further, as shown in fig. 4, the center of the first lane of longitudinal lane support is 15cm from the left edge of the front panel 102, while the center of the fourth lane of longitudinal lane support is 15cm (55 cm minus 40cm difference) from the right edge of the front panel 102.
Further, the embodiment of the invention can take the D300 gas steel pipe as an example for obstacle clearance. More specifically, the obstacle to be cleared is a waste DN300 gas pipe, a 1cm thick steel pipe and a buried depth of about 750cm, so that the steel sleeve box supporting device with the length of 800cm is prefabricated. In combination with the foregoing, for the waste gas pipe with the burial depth of 750cm, a notch with the length of 30cm (namely, the reserved groove 101 with the size of 60 x 30 cm) is reserved at the bottom of the steel sleeve supporting device, so that the pipe cutting operation is facilitated, meanwhile, the waste pipe is convenient to place, and a placing hole 202 is formed at the position 20cm away from the top of the top, so that the carrying pole can conveniently pass through the placing hole on the steel sleeve to fix the vertical position. Thus, a steel box support device having a length of 800cm (750 cm+30cm+20 cm=800 cm) was prefabricated. That is, comprehensively considering the demands of placing, hoisting and placing waste pipes and cutting convenience, the relevant parameters of the steel bushing box supporting device are comprehensively set.
Fig. 5 is a schematic plan view of a steel jackbox support apparatus for an obstacle clearing apparatus for deep pipe obstacle clearing in accordance with an embodiment of the invention. Here, in order to avoid repetition, descriptions about the same structure are omitted. Further, as shown in fig. 5, for example, the fore shaft pipes 501 are respectively arranged at the sides of the two side panels 103 of the steel box supporting means. This is because the width of the excavated groove is larger than the width of the steel box supporting means, and in order to prevent the collapse of the side soil walls after the slurry is removed, locking pipes 501 are inserted at both sides of both side panels of the side panels 103 of the steel box supporting means.
Fig. 6a is a schematic view of welding a support structure of a steel casing support device of an obstacle clearing device for clearing obstacles in deep ducts with a frontal plate according to an embodiment of the invention. Fig. 6b is an enlarged view of the welding of the support structure of the steel casing support device of the obstacle clearing device for clearing obstacles in deep ducts with the front panel according to an embodiment of the invention. As shown in fig. 6a and 6b, the support structure and the front panel are welded firmly using a 6mm fillet weld.
In the embodiment of the invention, the deep pipeline steel sleeve type obstacle clearing device is adopted, the steel sleeve box is only required to be hung in a diaphragm wall groove, the obstacle clearing operation is simple and convenient, the obstacle clearing period can be greatly shortened, and the steel sleeve box can be recovered and recycled in the manual obstacle clearing process, so that the cost can be greatly saved. The steel sleeve box has small whole volume and small occupied area, and does not need large-area excavation, thereby reducing the limit of the field for removing the obstacle. In addition, the invention has the important points that the prefabricated steel sleeve box is placed into the underground diaphragm wall groove to bear the soil pressure of the groove wall, ensure the safe and stable working environment in the steel sleeve box, ensure the smooth implementation of deep barrier clearance operation and enhance the safety of the barrier clearance operation.
Next, according to an embodiment of the present invention, an obstacle clearing method of an obstacle clearing device for clearing an obstacle of a deep pipe is provided based on fig. 7 to 10. Fig. 7 is a flowchart of an obstacle clearing method of an obstacle clearing device for clearing an obstacle in a deep pipe according to an embodiment of the invention. Fig. 8 is a longitudinal bending moment diagram of a steel jackbox support apparatus of an obstacle clearing apparatus for clearing an obstacle in a deep pipe according to an embodiment of the invention. Fig. 9 is a transverse bending moment diagram of a steel jackbox support apparatus for an obstacle clearing apparatus for deep pipe obstacle clearing in accordance with an embodiment of the invention. FIG. 10 is a simulation of the extent of buckling of RISA-2D steel panels of a steel housing supporting device of an obstacle clearing device for clearing obstacles in deep ducts, according to an embodiment of the invention.
As shown in fig. 7, the obstacle clearing method of the obstacle clearing device for clearing obstacles of deep pipes of the present invention mainly comprises the steps of: compiling a special construction scheme through the position and depth obtained by exploring, and prefabricating a steel sleeve box according to a calculation book S701; inserting locking pipes at two sides of the excavated groove, hanging the prefabricated steel sleeve box supporting device, and fixing the position S702 of the steel sleeve box supporting device by using a carrying pole; pumping out mud S703 in the groove; manually entering a steel sleeve supporting device to clear the obstacle to the bottom of the obstacle S704; and S705, after the obstacle clearance is finished, recharging the slurry, and pulling out the steel sleeve box supporting device and the locking pipe.
Further, before the method step S701 of the present invention, the obstacle clearing method of the obstacle clearing device for clearing an obstacle of a deep pipe according to the present invention further includes: and (3) setting out according to a drawing, determining the approximate position of the pipeline, and determining the actual position and the burial depth of the pipeline by adopting mechanical detection and excavation. In the step (1), the invention adopts a diaphragm wall construction process, and under the premise of carrying mud, a grooving machine is adopted for exploring and digging.
Further, in the method step S701 of the present invention, the position and depth obtained by the exploring are used to compile a construction scheme of the obstacle clearance special according to the actual situation of the site and the structure analysis is performed by using RISA-2D, so as to obtain the buckling degrees of different positions in two directions (as shown in fig. 8 and 9 respectively); and linearly superposing deflection by Matlab, deforming a 3D simulation panel (as shown in figure 10), and checking and calculating the stress change condition of the steel sleeve to obtain the prefabricated steel sleeve.
In this embodiment of the method of the present invention, the obstacle on which the calculation of the present invention is based may be exemplified by discarding the DN300 gas pipe. More specifically, the obstacle to be cleared is a waste DN300 gas pipe, a 1cm thick steel pipe and a buried depth of about 750cm, so that the steel sleeve box supporting device with the length of 800cm is prefabricated. The obstacle clearance method of the invention prepares the relevant parameters of the steel sleeve box supporting device in advance by comprehensively considering the demands of placing, hoisting and placing waste pipelines and cutting convenience. For example, a notch with the length of 30cm (namely a reserved groove with the size of 60 x 30 cm) is reserved at the bottom of the steel sleeve supporting device with the length of 800cm, so that the pipeline cutting operation is facilitated, meanwhile, the waste pipeline is convenient to place, and a placing hole 202 is formed at the position 20cm away from the top of the steel sleeve supporting device, so that a carrying pole can conveniently be placed to pass through the placing hole on the steel sleeve to fix the vertical position.
The method step S702 of the present invention further specifically includes: the lifting hole at the top of the steel sleeve supporting device is penetrated into the shackle, the crawler crane is utilized for trial lifting, the steel sleeve supporting device is slowly placed into the underground wall connecting groove after safety and stability are ensured, the notch of the reserved groove is accurately positioned above the pipeline, and finally, the position for placing the shoulder pole to fix the steel sleeve supporting device is penetrated into the ground, and the shackle is unlocked to withdraw from the crawler crane. Further, after the above-described method step S701 is completed, the above-described method step S702 is performed when the excavation is performed to the top of the obstacle.
Further, the obstacle clearing method of the obstacle clearing device for clearing an obstacle of a deep pipe according to the present invention further includes:
after the method step S705, the construction is performed according to the normal process of the underground diaphragm wall.
The obstacle clearing method of the obstacle clearing device for clearing the obstacle of the deep pipeline corresponds to the obstacle clearing device for clearing the obstacle of the deep pipeline.
According to the obstacle clearing device and the obstacle clearing method for the deep pipeline, disclosed by the embodiment of the invention, the box type obstacle clearing method for the steel sleeve of the deep pipeline is realized, so that the problems of the prior art are solved, the obstacle clearing period of the deep pipeline in the underground diaphragm wall construction process is shortened, the limit of an obstacle clearing site is reduced, the economic cost of obstacle clearing is reduced, and meanwhile, the safety and convenience of obstacle clearing are enhanced.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives can occur depending upon design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (9)
1. An obstacle clearing device for clearing obstacles in deep pipes, comprising: the steel sleeve box supporting device is characterized in that,
the steel bushing box supporting device comprises:
the steel panel structure comprises a front panel and side panels, wherein the side panels are arranged between the front panels, the front panels and the side panels are welded into a ring shape, an opening which can be opened and closed is not formed in the bottom of the front panel, the length of the side panels is smaller than that of the front panel, so that a space for forming a reserved groove which cannot be opened and closed is reserved in the bottom of the front panel, a reserved groove with a fixed size is formed in the bottom of the steel sleeve box supporting device and is used for placing an obstacle, and obstacle clearing operation of the obstacle is facilitated, wherein the obstacle is a waste pipeline; and
the supporting structure is inside the steel bushing box supporting device, and the supporting structure with the front panel welded fastening, wherein, the supporting structure includes: a first number of columns of longitudinal channel supports arranged in the width direction, and a second number of rows of transverse channel supports arranged in the length direction for each column of longitudinal channel supports, wherein the left and right outermost longitudinal channel supports of the longitudinal channel supports are respectively close to the side panels but neither are in direct contact with the side panels, and wherein the left and right longitudinal channel supports of the longitudinal channel supports are symmetrically arranged within the steel box supporting means,
wherein, steel bushing case strutting arrangement supplies constructor to get into to artifical clearance barrier is to barrier bottom.
2. The obstacle clearing device for deep pipe clearance according to claim 1, wherein the spacing between the side panels is no greater than the width of the front panel.
3. The obstacle clearing device for clearing obstacles in deep ducts according to claim 1, wherein the side panels are welded to the front panel in a ring shape using fillet welds.
4. The obstacle clearing device for clearing obstacles in a deep pipeline as recited in claim 1, further comprising: and the hoisting hole is arranged at the top of the steel sleeve box supporting device.
5. The obstacle clearing device for clearing an obstacle in a deep pipeline as recited in claim 4, further comprising: and the placing hole is arranged at the top of the steel sleeve supporting device, wherein the lifting hole is arranged right above the placing hole, and the diameter of the placing hole is larger than that of the lifting hole.
6. The obstacle clearing device for clearing obstacles in deep pipes as claimed in claim 1, wherein,
the center-to-center spacing between the laterally disposed longitudinal lane supports is a first spacing and the center-to-center spacing between the centrally disposed longitudinal lane supports is a second spacing, and wherein the second spacing is greater than the first spacing.
7. The obstacle clearing device for deep pipe obstacle clearing of claim 1, wherein a center-to-center spacing between the lateral lane supports is a third spacing and a center of each of the top and bottom extreme edge lateral lane supports of the steel box support device is a fourth spacing from an outer edge of the steel box support device, and wherein the fourth spacing is less than the third spacing.
8. The obstacle clearing device for clearing obstacles in deep pipes as claimed in claim 1, wherein,
the length of the support structure is the same as the width of the side panels.
9. A method of clearing obstacles using the clearing device of claim 1 comprising the steps of:
compiling a special construction scheme through the position and depth obtained by exploring, and prefabricating a steel sleeve box according to a calculation book;
inserting locking pipes at two sides of the excavated groove, hanging the prefabricated steel sleeve supporting device, and fixing the position of the steel sleeve supporting device by placing the shoulder pole, wherein the method further comprises the following steps: penetrating a shackle into a hoisting hole at the top of the steel sleeve supporting device, performing trial hoisting by using a crawler crane, slowly placing the steel sleeve supporting device into a wall-connected trench after ensuring safety and stability, accurately positioning a notch of a reserved groove above a pipeline, penetrating a position for placing a shoulder pole to fix the steel sleeve supporting device on the ground, and unlocking the shackle to withdraw from the crawler crane;
pumping and exhausting the slurry in the groove;
manually entering a steel sleeve box supporting device to clean the waste barrier to the bottom of the barrier; and
and (5) after the obstacle clearance is finished, recharging the slurry, and pulling out the steel sleeve box supporting device and the locking pipe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310983937.4A CN117051860A (en) | 2020-06-28 | 2020-06-28 | Barrier removing method for deep pipeline barrier removing |
| CN202010595452.4A CN113846654B (en) | 2020-06-28 | 2020-06-28 | Barrier removing device and barrier removing method for deep pipeline barrier removing |
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| CN202010595452.4A CN113846654B (en) | 2020-06-28 | 2020-06-28 | Barrier removing device and barrier removing method for deep pipeline barrier removing |
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| CN202310983937.4A Division CN117051860A (en) | 2020-06-28 | 2020-06-28 | Barrier removing method for deep pipeline barrier removing |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761083A (en) * | 2008-12-24 | 2010-06-30 | 上海市基础工程公司 | Underground continuous wall obstacle clearing construction method for traversing ultra-thick obstacle |
| CN106049502A (en) * | 2016-07-07 | 2016-10-26 | 中铁三局集团广东建设工程有限公司 | Protection device for underground pipeline digging exploring cutting and digging exploring cutting method |
| CN108086330A (en) * | 2017-12-06 | 2018-05-29 | 湖北华舟重工应急装备股份有限公司 | A kind of pipeline repairing quick supporting device and application method |
-
2020
- 2020-06-28 CN CN202010595452.4A patent/CN113846654B/en active Active
- 2020-06-28 CN CN202310983937.4A patent/CN117051860A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761083A (en) * | 2008-12-24 | 2010-06-30 | 上海市基础工程公司 | Underground continuous wall obstacle clearing construction method for traversing ultra-thick obstacle |
| CN106049502A (en) * | 2016-07-07 | 2016-10-26 | 中铁三局集团广东建设工程有限公司 | Protection device for underground pipeline digging exploring cutting and digging exploring cutting method |
| CN108086330A (en) * | 2017-12-06 | 2018-05-29 | 湖北华舟重工应急装备股份有限公司 | A kind of pipeline repairing quick supporting device and application method |
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| CN117051860A (en) | 2023-11-14 |
| CN113846654A (en) | 2021-12-28 |
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