CN110808564A - Concrete cable trench construction process - Google Patents
Concrete cable trench construction process Download PDFInfo
- Publication number
- CN110808564A CN110808564A CN201911089168.3A CN201911089168A CN110808564A CN 110808564 A CN110808564 A CN 110808564A CN 201911089168 A CN201911089168 A CN 201911089168A CN 110808564 A CN110808564 A CN 110808564A
- Authority
- CN
- China
- Prior art keywords
- cable trench
- wall
- concrete
- seepage
- template
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention relates to a concrete cable trench construction process, which comprises the following steps: step S1, digging a cable trench base groove, and digging drainage ditches at two sides of the cable trench base groove; step S2, pouring a concrete cushion; step S3: binding wall ribs; step S4: two groups of side wall steel templates are arranged on two sides of the concrete cushion layer, each side wall steel template comprises an inner template and an outer template, a waterproof plate is arranged between the inner template and the outer template, and filling spaces for pouring concrete are reserved between two side walls of the waterproof plate and the inner template and between two side walls of the waterproof plate and the outer template respectively; step S5: stirring and pouring concrete to form a cable trench wall; step S6: dismantling a side wall steel template; step S7: concrete maintenance and protection; step S8: backfilling earthwork; after the earthwork is backfilled, the water seepage phenomenon is easy to occur, the waterproof board plays a role in preventing seepage for water outside the wall body of the cable trench, the water accumulation inside the cable trench can be effectively avoided, and the stability of the cable working process is improved.
Description
Technical Field
The invention relates to the technical field of cable trenches, in particular to a concrete cable trench construction process.
Background
The cable trench is an underground pipeline for laying and replacing electric power or telecommunication cable facilities, is an enclosure structure of laid cable facilities, and is an indispensable infrastructure in power plants, transformer substations, municipal works and large factories and mines; in the construction of the transformer substation engineering, the workload of the concrete cable trench in the station is large, and the construction quality of the concrete cable trench directly influences the overall image of the transformer substation engineering.
The traditional Chinese patent of the invention with the authorization publication number CN102758451A discloses a concrete cable trench construction process, which comprises the following steps: measuring and positioning, and excavating groove earthwork; pouring and maintaining cushion concrete; binding steel bars; pouring and maintaining concrete of the bottom plate; assembling side wall steel templates and installing embedded parts; the side wall steel templates are provided with split bolt holes, and the inner steel template and the outer steel template of the side wall are fixed by the split bolts so as to determine the distance between the steel templates on the two sides of the side wall; by adopting the steel templates to assemble the formed side wall, the steel templates are tightly spliced and are not easy to deform, the concrete construction of the cable trench is formed in one step, the trench wall is smooth and clean after the template is removed, the joints are smooth and have no leakage slurry, the concrete surface quality of the cable trench wall can reach the clear water concrete quality level, and secondary painting is not needed.
However, the above technical solutions have the following disadvantages: because the cable trench is cast by concrete, the formed cable trench has poor waterproofness and is easy to seep water, so that accumulated water exists in the cable trench, and when the accumulated water is too much, the inner cable is easy to be immersed by water, so that the cable is unsafe to use.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a concrete cable trench construction process, which has the advantages that: the anti-seepage cable trench has a good anti-seepage effect, avoids water accumulation in the cable trench, and improves the stability of the cable in the working process.
The above object of the present invention is achieved by the following technical solutions:
a concrete cable trench construction process comprises the following steps:
step S1, digging a cable trench base groove according to design requirements, digging drainage ditches at two sides of the cable trench base groove, draining water on the substrate in time after digging, avoiding soaking in water and overexcavation, and filling broken stones to the elevation of the substrate if overexcavating;
step S2, tamping the original soil of the base, checking and accepting the cable trench foundation trench and the broken stones to be qualified, placing the center line, the side line and the elevation of the cushion layer, and pouring the concrete cushion layer after draining the accumulated water;
step S3: paying off the concrete cushion layer, and binding wall ribs point by point;
step S4: two groups of side wall steel templates are arranged on two sides of the concrete cushion layer, each side wall steel template comprises an inner template and an outer template, a waterproof plate is arranged between the inner template and the outer template, and filling spaces for pouring concrete are reserved between two side walls of the waterproof plate and the inner template and between two side walls of the waterproof plate and the outer template respectively;
step S5: stirring and pouring concrete to form a cable trench wall;
step S6: dismantling a side wall steel template;
step S7: concrete curing and protecting, wherein after plastering of the wall of the cable trench wall is finished, the concrete is covered, watered and cured for no less than 7 days;
step S8: and backfilling and compacting the earthwork according to the design requirement.
By adopting the technical scheme, the cable trench wall formed by concrete pouring has certain water permeability, after earthwork backfilling, when in rainy season, the water seepage phenomenon easily occurs in soil, the water seepage can be prevented by the waterproof board from permeating into the cable trench wall through the cable trench wall, the waterproof board is an anti-seepage material made of high polymer serving as a basic raw material, and the anti-seepage material has the characteristics of high strength, corrosion resistance, aging resistance and good anti-seepage performance, further plays a role in separation, can effectively avoid water accumulation in the cable trench wall, improves the stability of the cable working process, and prolongs the service life of the cable.
The invention is further configured to: the waterproof plate, the inner formwork and the outer formwork in the step S4 are connected through anti-seepage split bolts, locking nuts are connected to two ends of each anti-seepage split bolt in a threaded mode, through holes matched with the anti-seepage split bolts are formed in the wall body of the cable duct, and sealing and plugging pieces used for plugging two ends of each through hole are arranged on the anti-seepage split bolts.
By adopting the technical scheme, the arrangement of the anti-seepage split bolt ensures the stable space among the inner template, the outer template and the waterproof board, and realizes that the waterproof board is stably embedded in the wall body of the cable trench after the pouring of the wall body of the cable trench is finished, thereby enhancing the firmness of the wall body of the cable trench; after the cable duct wall is formed, unscrewing the locking nut, and removing the template; after the earthwork is backfilled, water in the soil is easy to permeate into the other end of the through hole from the outside of the cable trench wall body and from one end of the through hole, then permeates into the inside of the cable trench wall body, the two ends of the through hole are plugged and sealed by the sealing plugging piece, and the water in the soil can be effectively prevented from permeating into the cable trench wall body, so that the cable can work stably.
The invention is further configured to: the anti-seepage split bolt is characterized in that a cavity is formed in the anti-seepage split bolt, the sealing and plugging piece comprises flexible graphite sealing rings, a first abutting plate and a second abutting plate, the flexible graphite sealing rings are in threaded connection with two ends of the anti-seepage split bolt respectively, the first abutting plate and the second abutting plate are arranged in the cavity in a sliding mode in a pairwise mode and are arc-shaped, one end of each flexible graphite sealing ring extends into the through hole, abutting grooves matched with the first abutting plate and the second abutting plate are formed in the inner ring wall of each flexible graphite sealing ring respectively, a driving assembly for driving the first abutting plate and the second abutting plate to be inserted into the abutting grooves is arranged in the cavity, and an opening for the first abutting plate and the second abutting plate to penetrate through is formed.
By adopting the technical scheme, the flexible graphite sealing ring is rotated firstly, so that one end of the flexible graphite sealing ring is inserted into the through hole to block the through hole, and the sealing effect is realized due to the characteristics of high temperature resistance, corrosion resistance and wear resistance of the flexible graphite sealing ring; secondly, the locking nut is rotated and approaches to the direction of the flexible graphite sealing ring, so that one end of the flexible graphite sealing ring can be stably fixed in the through hole; then utilize drive assembly drive first to support board and second to support the board and pass the opening and insert the inslot, can support the outer rampart of flexible graphite sealing ring tightly at the both ends inner wall of through-hole, filled the gap between split bolt and the through-hole inner wall, improved the stability that the flexible graphite sealing ring is located the through-hole, further strengthened sealed effect, can effectually avoid the inside ponding that produces of cable pit wall body, improved the stability of cable work.
The invention is further configured to: the driving component comprises a driving rod which is in the same direction with the axial direction of the anti-seepage split bolt, a supporting block which is connected with one end of the driving rod, a limiting block which is arranged on the side wall of the bottom of the supporting block, a first supporting rod and a second supporting rod which are in the same direction with the radial direction of the anti-seepage split bolt, a sliding block which is respectively connected with one end of the first supporting rod and one end of the second supporting rod, and a rotating nut which is respectively connected with the two end walls of the anti-seepage split bolt in a, the first supporting rod and the second supporting rod slide in the opening, one end of the driving rod, which is far away from the abutting block, extends out of the end wall of the anti-seepage split bolt and is in threaded connection with the rotating nut, one ends of the first supporting rod and the second supporting rod far away from the sliding block are respectively connected with the first abutting plate and the second abutting plate, the slider slides along the radial of prevention of seepage split bolt, be equipped with the spacing groove that supplies the stopper to slide along its axial in the cavity, the slider all establishes to the inclined plane with the lateral wall that supports the piece and contact.
By adopting the technical scheme, the rotating nut is rotated, the limiting groove has a limiting effect on the sliding of the limiting block, and the rotating nut is in threaded connection with the driving rod so as to drive the abutting block to slide towards the sliding block; because the side wall of the sliding block is arranged to be the inclined plane, when the abutting block slides, the two opposite sliding blocks are far away from each other due to the limitation of the opening, the first supporting rod and the second supporting rod penetrate through the opening, the first abutting plate and the second abutting plate can be inserted into the abutting groove, the outer annular wall of the flexible graphite sealing ring can be abutted against the inner wall of the through hole, and the sealing of the two ends of the through hole is realized.
The invention is further configured to: the cross sections of the inner ring and the outer ring of the flexible graphite sealing ring are both trapezoidal, and the length of the first supporting rod is smaller than that of the second supporting rod.
By adopting the technical scheme, the section of the outer ring of the flexible graphite sealing ring is trapezoidal, so that one end of the flexible graphite sealing ring can be quickly inserted into the through hole when the flexible graphite sealing ring is rotated; the inner ring cross-section of nature graphite sealing ring is trapezoidal, and the length dimension of first branch is less than the length dimension of second branch, can support the board with first supporting and the second supports the board and insert and support tight inslot, has improved the interior compactness of outer rampart laminating at the through-hole of flexible graphite sealing ring, and is sealed effectual.
The invention is further configured to: all the springs are sleeved on the first supporting rod and the second supporting rod, one end of each spring is fixed to the inner wall of the corresponding cavity, and the other end of each spring is fixed to the side wall of the corresponding sliding block.
By adopting the technical scheme, the arrangement of the spring has a limiting effect on the movement of the sliding block, when the wall body of the cable duct is poured, the first abutting plate and the second abutting plate can be far away from the inner wall of the through hole by utilizing the elasticity of the spring, and the first abutting plate and the second abutting plate are prevented from being bonded with concrete; and before concrete pouring, the two ends of the anti-seepage split bolt can be sleeved with the protective die sleeves, so that concrete slurry is prevented from permeating into the cavity through the opening to influence the sliding of the sliding block.
The invention is further configured to: and a sealing ring plate is fixed on the outer ring wall of the flexible graphite sealing ring, and the side wall of the sealing ring plate is provided with a water-swelling water stop strip which is attached to the side wall of the cable trench wall.
By adopting the technical scheme, after the earthwork is backfilled, the two sides of the cable trench wall body are pressed by the soil, and the sealing ring plate and the water-swelling water stop strip can be tightly attached to the side wall of the cable trench wall body; when water seeps into the soil, the water-swelling water stop strip swells, and a gap between the sealing ring plate and the wall body of the cable trench is plugged, so that the sealing effect is further enhanced.
The invention is further configured to: the step S2 further includes a step S21: the cobblestone pavement is laid in the middle of the concrete cushion layer, drainage slopes are arranged on two sides of the cobblestone pavement, the higher end of each drainage slope faces the cobblestone pavement, the lower end of each drainage slope faces a drainage ditch, a drainage hole is formed in each drainage hole, and a drainage pipe is connected to each drainage hole and extends into the drainage ditch.
Through adopting above-mentioned technical scheme, when the inside of cable pit wall body produced ponding, the domatic setting of drainage plays the effect of water conservancy diversion to ponding, and then ponding passes through the effect of gravity, flows to the wash port direction, and finally ponding in time discharging the escape canal through the drain pipe, effectually avoids ponding to pile up inside the cable pit wall body, has influenced the stability of cable working process.
The invention is further configured to: and the inner wall and the outer wall of the cable trench wall are coated with cement-based capillary crystalline waterproof paint.
By adopting the technical scheme, the cement-based permeable crystallization type waterproof coating has the characteristics of self-healing performance, no toxicity, environmental protection, corrosion resistance, acid and alkali resistance, strong permeability and the like, can permeate into concrete through chemical reaction to generate crystallization, and blocks capillary holes of the concrete, so that when the water seepage condition occurs, the waterproof effect is achieved on the wall body of the cable trench from the source, the anti-permeability effect is further enhanced, and the stability of the cable working process is improved.
The invention is further configured to: the distance between the inner template and the outer template and the side wall of the waterproof board is 8-10 cm.
By adopting the technical scheme, the distance between the two sides of the waterproof board and the inner template and the distance between the two sides of the waterproof board and the outer template are 8-10cm respectively, so that the wall size of the cable duct wall is 16-20cm, and the firmness is high.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the waterproof board has good seepage-proofing effect, can prevent seepage water from permeating into the wall of the cable trench through the wall of the cable trench, plays a role in blocking, can effectively avoid water accumulation in the wall of the cable trench, improves the stability of the cable in the working process and prolongs the service life of the cable;
2. the anti-seepage split bolts are utilized to ensure that the space among the inner template, the outer template and the waterproof board is stable, and after the cable trench wall is poured, the waterproof board is stably embedded in the cable trench wall, so that the firmness of the cable trench wall is enhanced; after the cable duct wall is formed, unscrewing the locking nut, and removing the template; after the earthwork is backfilled, in order to prevent water in the earthwork from permeating into the wall body of the cable trench, the two ends of the through hole are sealed by the sealing and plugging piece, so that the phenomenon of water accumulation in the wall body of the cable trench is effectively prevented, and the cable can stably work;
3. when the inside of cable pit wall body produced ponding, the domatic setting of drainage plays the effect of water conservancy diversion to ponding, and then ponding through the effect of gravity to the wash port direction flows, and finally ponding in time discharging in the escape canal through the drain pipe, effectually avoids ponding to pile up inside the cable pit wall body, has influenced the stability of cable work process.
Drawings
Fig. 1 is an overall sectional structural schematic diagram of the present embodiment.
Fig. 2 is an enlarged schematic structural view for embodying the portion a in fig. 1.
Fig. 3 is an enlarged schematic structural diagram for embodying the portion B in fig. 2.
Reference numerals: 1. a cable trench base groove; 2. a drainage ditch; 3. a concrete cushion; 4. side wall steel formworks; 41. an inner template; 42. an outer template; 5. a waterproof sheet; 6. filling the space; 7. a cable trench wall; 8. an anti-seepage split bolt; 9. locking the nut; 10. a through hole; 11. sealing the plugging piece; 111. a flexible graphite seal ring; 112. a first resisting plate; 113. a second resisting plate; 114. abutting against the groove; 115. an opening; 12. a cavity; 13. a drive assembly; 131. a drive rod; 132. a resisting block; 133. a limiting block; 134. a first support bar; 135. a second support bar; 136. a slider; 137. rotating the nut; 14. a positioning flange; 15. a limiting groove; 16. an inclined surface; 17. a spring; 18. a seal ring plate; 19. a water-swelling sealing strip when meeting water; 20. a cobblestone sidewalk; 21. a drainage slope; 22. a drain hole; 23. a drain pipe; 24. a trapezoidal block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
referring to fig. 1, the concrete cable trench construction process disclosed by the invention comprises the following operation steps:
step S1: according to design requirements, a cable trench base groove 1 is dug, and drainage ditches 2 are dug on two sides of the cable trench base groove 1; if the bottom of the cable trench is loose soil or sludge soil, adopting a cement soil mixing pile to reinforce the foundation; after excavation, draining the substrate in time without soaking in water and overetching, and filling broken stones to the elevation of the substrate if the substrate is overetched;
step S2, tamping the original soil of the substrate, checking and accepting the cable trench foundation trench 1 and the broken stones to be qualified, placing the center line, the side line and the elevation of the cushion layer, pouring the concrete cushion layer 3 after draining accumulated water, and not interrupting drainage in the process of tamping concrete and before final setting of the cushion layer concrete;
step S3: paying off the concrete cushion 3, and binding wall ribs point by point;
step S4: two groups of side wall steel templates 4 are arranged on two sides of the concrete cushion 3, each side wall steel template 4 comprises an inner template 41 and an outer template 42, a waterproof plate 5 is arranged between each inner template 41 and each outer template 42, filling spaces 6 for pouring concrete are reserved between two side walls of each waterproof plate 5 and the corresponding inner template 41 and the corresponding outer template 42 respectively, and the thickness of each cable trench side wall is equal to the distance between the corresponding inner template 41 and the corresponding outer template 42;
step S5: concrete is stirred, and the concrete is poured into the filling space 6 to form a cable trench wall 7;
step S6: dismantling the side wall steel template 4;
step S7: concrete curing and protecting, namely covering, watering and curing for no less than 7 days after plastering of the wall of the cable trench wall 7 is finished;
step S8: backfilling and compacting earthwork according to the design requirement;
the cable trench wall 7 formed by pouring concrete has certain water permeability, when the earth is backfilled, water seepage easily occurs in the earth in rainy seasons, the water seepage can be prevented by using the waterproof board 5 from permeating into the cable trench wall 7 through the cable trench wall 7, the waterproof board 5 is an impermeable material prepared by using high polymer as a basic raw material, and the cable trench wall 7 has the characteristics of high strength, corrosion resistance, aging resistance and good impermeable performance, further plays a role in blocking, and can prevent the cable trench wall 7 from generating accumulated water inside to influence the normal work of the cable.
Referring to fig. 1, the inner wall and the outer wall of the cable trench wall 7 are coated with cement-based capillary crystalline waterproof paint; the cement-based permeable crystallization type waterproof coating has the characteristics of self-healing performance, no toxicity, environmental protection, corrosion resistance, acid and alkali resistance and the like, has a penetration function, can penetrate into concrete through chemical reaction to generate crystallization, and blocks capillary pores of the concrete, so that when water seeps out of backfilled soil, a waterproof effect is achieved on a cable trench wall 7 from a source, the anti-permeability effect is further enhanced, and the stability of a cable working process is improved.
Referring to fig. 1, the step S2 further includes a step S21 of laying a cobblestone sidewalk 20 in the middle of the concrete mat 3, wherein the cobblestone sidewalk 20 has a length direction in the same direction as the length direction of the cable trench wall 7, drainage slopes 21 are disposed on both sides of the cobblestone sidewalk 20, the slopes 21 have a slope angle of 3 ° to 6 °, a higher end of the drainage slope 21 is connected to the cobblestone sidewalk 20, a lower end of the drainage slope 21 faces the drainage ditch 2 and is provided with drainage holes 22, the drainage ditches 2 are arranged at equal intervals along the length direction of the cable trench wall 7, and drainage pipes 23 are connected to the drainage holes 22 and extend into the drainage ditch 2; when the inside of cable pit wall body 7 produced ponding, the domatic 21 setting of drainage plays the effect of water conservancy diversion to ponding, and then ponding through the effect of gravity to wash port 22 direction flow, finally ponding through drain pipe 23 in time discharging into escape canal 2, can avoid ponding to pile up inside cable pit wall body 7, has influenced the stability of cable working process.
Referring to fig. 1 and 2, in the step S4, the waterproof board 5, the inner formwork 41 and the outer formwork 42 are connected through the anti-seepage split bolt 8, two ends of the anti-seepage split bolt 8 are in threaded connection with the locking nuts 9, the distance between each of the inner formwork 41 and the outer formwork 42 and the side wall of the waterproof board 5 is 8-10cm, and further the thickness of the wall of the cable trench wall 7 is 16-20cm, so that the cable trench wall is strong in firmness; a through hole 10 matched with the anti-seepage split bolt 8 is formed in the cable trench wall 7, and a sealing and plugging piece 11 for plugging two ends of the through hole 10 is arranged on the anti-seepage split bolt 8; the arrangement of the anti-seepage split bolts 8 ensures that the space between the inner template 41, the outer template 42 and the waterproof plate 5 is stable, so that the waterproof plate 5 is stably embedded in the cable trench wall 7 after the pouring of the cable trench wall 7 is completed, and the firmness of the cable trench wall 7 is enhanced; after the cable trench wall 7 is formed, the locking nut 9 is unscrewed, and the template is removed; after earthwork backfilling, water in the soil is easy to permeate into the other end of the through hole 10 from the outside of the cable trench wall 7 and from one end of the through hole 10, then permeates into the inside of the cable trench wall 7, and the sealing and plugging piece 11 is utilized, so that the water in the soil can be prevented from permeating into the inside of the cable trench wall 7, and the cable can work stably.
Referring to fig. 2, the sealing and plugging member 11 includes a flexible graphite sealing ring 111, a first abutting plate 112 and a second abutting plate 113, which are arranged in an arc shape and respectively connected with two ends of the anti-seepage split bolt 8 in a threaded manner, one end of the flexible graphite sealing ring 111 extends into the through hole 10, a cavity 12 is arranged in the anti-seepage split bolt 8, the anti-seepage split bolt 8 is a hollow split bolt, the first abutting plate 112 and the second abutting plate 113 are respectively arranged in the cavity 12 in a pairwise relative sliding manner, the two opposite first abutting plates 112 and the two opposite second abutting plates 113 are arranged in a relative sliding manner along the radial direction of the anti-seepage split bolt 8, abutting grooves 114 matched with the first abutting plate 112 and the abutting plates are respectively arranged on the inner annular wall of the flexible graphite sealing ring 111, a driving assembly 13 for driving the first abutting plate 112 and the second abutting plate 113 to be inserted into the abutting grooves 114 is arranged in the cavity 12, openings 115 for the first abutting plate 112 and the second abutting plate 113 to pass through are respectively arranged on the outer wall of the anti, the locking nut 9 is tightly propped against the end wall of the flexible graphite sealing ring 111, which is back to the through hole 10;
the flexible graphite sealing ring 111 has the characteristics of high temperature resistance, corrosion resistance and wear resistance, and has a good sealing effect; when plugging is performed, the flexible graphite sealing ring 111 is rotated firstly, so that one end of the flexible graphite sealing ring 111 is inserted into the through hole 10 to plug the through hole 10, and the sealing effect is realized; secondly, the locking nut 9 is rotated and approaches to the direction of the flexible graphite sealing ring 111, so that one end of the flexible graphite sealing ring 111 can be stably fixed in the through hole 10; then, the driving assembly 13 is used for driving the first abutting plate 112 and the second abutting plate 113 to penetrate through the opening 115 and be inserted into the groove, so that the outer ring wall of the flexible graphite sealing ring 111 can abut against the inner walls of the two ends of the through hole 10, gaps between the split bolts and the inner wall of the through hole 10 are filled, the stability of the flexible graphite sealing ring 111 in the through hole 10 is improved, and the sealing effect is further enhanced; according to the sealing mode, one end of the flexible graphite sealing ring 111 is inserted into the through hole 10, and the outer ring wall inserted into the through hole 10 abuts against the inner wall of the through hole 10, so that the sealing effect is good, and water can be prevented from permeating into the cable trench wall 7.
Referring to fig. 2 and 3, a sealing ring plate 18 is fixed on the outer ring wall of the flexible graphite sealing ring 111, and a water-swelling water stop bar 19 is arranged on the side wall of the sealing ring plate 18 and attached to the side wall of the cable trench wall 7; after the earthwork is backfilled, the two sides of the cable trench wall 7 are pressed by the earthwork, and the sealing ring plate 18 and the water-swelling water stop bar 19 can be tightly attached to the side wall of the cable trench wall 7; when water seeps into the soil, the water-swelling water stop strip swells, and a gap between the sealing ring plate 18 and the cable trench wall 7 is plugged, so that the sealing effect is further enhanced.
Referring to fig. 2 and 3, the driving assembly 13 includes a driving rod 131 located in the cavity 12, a resisting block 132 connected to one end of the driving rod 131, a limiting block 133 disposed on a side wall of the bottom of the resisting block 132, a first supporting rod 134, a second supporting rod 135, a sliding block 136 connected to one end of the first supporting rod 134 and one end of the second supporting rod 135 respectively, and a rotating nut 137 rotatably connected to two end walls of the anti-seepage tie bolt 8 respectively, the first supporting rod 134 and the second supporting rod 135 both slide in the opening 115, the size of the opening 11 matches the size of the first supporting rod 134 and the second supporting rod 135, one end of the driving rod 131 far from the resisting block 132 extends out of the end wall of the anti-seepage tie bolt 8 and is connected to the rotating nut 137 by a thread, an outer wall of one end of the driving rod 131 far from the resisting block 132 is provided with a thread, one end of the driving rod 131 near the rotating nut 137 is provided with a positioning flange 14, one ends of the first supporting rod 134 and the second supporting rod 135 far from, the sliding block 136 slides along the radial direction of the cavity 12, a sliding groove (not shown in the figure) for the sliding block 136 to slide is arranged in the cavity 12 along the radial direction thereof so as to limit the sliding of the sliding block 136, a limiting groove 15 for the sliding of the limiting block 133 is arranged in the cavity 12 along the axial direction thereof, a trapezoidal block 24 is arranged at one end of the resisting block 132 facing the sliding block 136, the long bottom edge of the trapezoidal block 24 is connected with the resisting block 132, and an inclined surface 16 matched with the waist wall of the trapezoidal block 24 is arranged at the side wall of the sliding block 136 facing the resisting block 132;
during adjustment, the rotating nut 137 is rotated, the limiting groove 15 limits the sliding of the limiting block 133, and the rotating nut 137 is in threaded connection with the driving rod 131 to drive the limiting block 133 to slide in the limiting groove 15, so that the abutting block 132 approaches to the sliding block 136; the positioning flange 14 is arranged to prevent the driving rod 131 from completely rotating into the cavity 12, so that a limiting effect is achieved; because the side wall of the sliding block 136 is the inclined surface 16, when the abutting block 132 slides, the sliding block 136 slides stably in the sliding groove, and then the two opposite sliding blocks 136 are away from each other, and further the first supporting rod 134 and the second supporting rod 135 both pass through the opening 115, so that the first abutting plate 112 and the second abutting plate 113 are inserted into the abutting groove 114, and thus the outer annular wall of the flexible graphite sealing ring 111 can abut against the inner wall of the through hole 10, and the sealing of the two ends of the through hole 10 is realized; this drive mode, convenient operation, labour saving and time saving, the shutoff is efficient.
Referring to fig. 2 and 3, the inner ring and the outer ring of the flexible graphite sealing ring 111 have trapezoidal cross sections, so that when the flexible graphite sealing ring 111 is rotated, one end of the flexible graphite sealing ring 111 can be rapidly inserted into the through hole 10; because the inner ring cross section of the flexible graphite sealing ring 111 is trapezoidal, the length dimension of the first supporting rod 134 is smaller than that of the second supporting rod 135, the first abutting plate 112 and the second abutting plate 113 can be inserted into the abutting groove 114, the tightness of the outer ring wall of the flexible graphite sealing ring 111 attached to the inside of the through hole 10 is improved, and the sealing effect is good.
Referring to fig. 3, the first support rod 134 and the second support rod 135 are both sleeved with a spring 17, one end of the spring 17 is fixed on the inner wall of the cavity 12, and the other end of the spring 17 is fixed on the side wall of the sliding block 136; the arrangement of the spring 17 has a limiting effect on the sliding block 136, when the cable trench wall 7 is poured, the first abutting plate 112 and the second abutting plate 113 can be far away from the inner wall of the through hole 10 by using the elasticity of the spring 17, and the first abutting plate 112 and the second abutting plate 113 are prevented from being bonded with concrete; meanwhile, before concrete is poured, the two ends of the anti-seepage split bolt 8 can be sleeved with the protective die sleeves, so that concrete slurry is prevented from permeating into the cavity 12 through the opening 115 to influence the sliding of the sliding block 136.
The working process is as follows: after the steel plate is removed, firstly, the flexible graphite sealing ring 111 is rotated, so that one end of the flexible graphite sealing ring 111 is inserted into the through hole 10; secondly, the locking nut 9 is rotated to enable the flexible graphite sealing ring 111 to tightly block the through hole 10, and then the water-swelling water stop bar 19 can be tightly attached to the outer wall of the cable trench wall 7, so that the sealing effect is realized; then, the rotating nut 137 is rotated to drive the abutting block 132 to slide towards the sliding block 136, at the moment, the two opposite first supporting rods 134 and the two opposite second supporting rods 135 are far away from each other, and meanwhile, the spring 17 is compressed, so that the first abutting plate 112 and the second abutting plate 113 can be inserted into the abutting groove 114, and therefore, the inner annular wall of the flexible graphite sealing ring 111 can be abutted against the inner wall of the through hole 10, and the sealing effect is further enhanced;
after earthwork backfilling, when water seepage occurs, the water-swelling water stop strip 19 swells when meeting water, so that a gap between the cable trench wall 7 and the sealing ring plate 18 is filled, and a primary waterproof effect is realized; one end of the flexible graphite sealing ring 111 is tightly blocked and passes through the inner wall of the through hole 10, and the outer ring wall of the other end of the flexible graphite sealing ring is tightly propped against the inner wall of the through hole, so that secondary waterproof and anti-seepage effects are realized, and water is effectively prevented from permeating into the cable trench wall 7; when the upper portion of cable pit wall body 7 the infiltration phenomenon appears, utilize drainage slope 21, can in time arrange into escape canal 2 with the inside ponding of cable pit wall body 7 in, and then can prevent the inside ponding of cable pit wall body 7, influence the normal work of cable.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A concrete cable trench construction process is characterized in that: the method comprises the following steps:
step S1, digging a cable trench base groove (1) according to design requirements, digging drainage ditches (2) at two sides of the cable trench base groove (1), draining water on a substrate in time after digging, avoiding soaking in water and overexcavation, and filling broken stones to the elevation of the substrate if overexcavation is performed;
step S2, tamping the original soil of the base, placing the center line, the side line and the elevation of the cushion layer after the acceptance of the cable trench foundation trench (1) and the broken stones is qualified, and pouring the concrete cushion layer (3) after draining accumulated water;
step S3: paying off the concrete cushion (3), and binding wall ribs point by point;
step S4: two groups of side wall steel templates (4) are arranged on two sides of the concrete cushion (3), each side wall steel template (4) comprises an inner template (41) and an outer template (42), a waterproof plate (5) is arranged between each inner template (41) and each outer template (42), and a filling space (6) for pouring concrete is reserved between each two side walls of each waterproof plate (5) and each inner template (41) and each outer template (42);
step S5: concrete is stirred and poured to form a cable trench wall body (7);
step S6: dismantling the side wall steel template (4);
step S7: concrete curing and protecting, namely covering, watering and curing for no less than 7 days after plastering of the wall of the cable trench wall (7) is finished;
step S8: and backfilling and compacting the earthwork according to the design requirement.
2. The concrete cable trench construction process of claim 1, wherein: the waterproof plate (5), the inner formwork (41) and the outer formwork (42) in the step S4 are connected through the anti-seepage split bolt (8), the two ends of the anti-seepage split bolt (8) are in threaded connection with the locking nuts (9), a through hole (10) matched with the anti-seepage split bolt (8) is formed in the cable trench wall body (7), and the anti-seepage split bolt (8) is provided with a sealing plugging piece (11) used for plugging two ends of the through hole (10).
3. The concrete cable trench construction process of claim 2, wherein: a cavity (12) is arranged in the anti-seepage split bolt (8), the sealing plugging piece (11) comprises flexible graphite sealing rings (111) which are respectively in threaded connection with two ends of the anti-seepage split bolt (8), a first abutting plate (112) and a second abutting plate (113) which are arranged in the cavity (12) in a sliding mode in a pairwise opposite mode and are arc-shaped, one end of the flexible graphite sealing ring (111) extends into the through hole (10), abutting grooves (114) matched with the first abutting plate (112) and the second abutting plate (113) are respectively arranged on the inner annular wall of the flexible graphite sealing ring (111), a driving component (13) for driving the first abutting plate (112) and the second abutting plate (113) to be inserted into the abutting groove (114) is arranged in the cavity (12), an opening (115) for the first abutting plate (112) and the second abutting plate (113) to penetrate through is formed in the outer wall of the anti-seepage split bolt (8).
4. A concrete cable trench construction process according to claim 3, wherein: the driving assembly (13) comprises a driving rod (131) which is axially in the same direction as the anti-seepage split bolt (8), a supporting block (132) connected with one end of the driving rod (131), a limiting block (133) arranged on the side wall of the bottom of the supporting block (132), a first supporting rod (134) and a second supporting rod (135) which are in the same direction as the anti-seepage split bolt (8) in the radial direction, a sliding block (136) respectively connected with one ends of the first supporting rod (134) and the second supporting rod (135) and a rotating nut (137) respectively rotatably connected to the two end walls of the anti-seepage split bolt (8), the first supporting rod (134) and the second supporting rod (135) both slide in the opening (115), one end of the driving rod (131) far away from the supporting block (132) extends out of the end wall of the anti-seepage split bolt (8) and is in threaded connection with the rotating nut (137), one ends of the first supporting rod (134) and the second supporting rod (135) far away from the sliding block (136) are respectively connected with the first supporting plate (112) and the second supporting, the anti-seepage split bolt is characterized in that the sliding block (136) slides along the radial direction of the anti-seepage split bolt (8), a limiting groove (15) for the limiting block (133) to slide is arranged in the cavity (12) along the axial direction of the cavity, and inclined surfaces (16) are arranged on the side walls, in contact with the abutting blocks (132), of the sliding block (136).
5. The concrete cable trench construction process of claim 4, wherein: the sections of the inner ring and the outer ring of the flexible graphite sealing ring (111) are both trapezoidal, and the length dimension of the first supporting rod (134) is smaller than that of the second supporting rod (135).
6. The concrete cable trench construction process of claim 4, wherein: all be equipped with spring (17) on first branch (134), second branch (135), the one end of spring (17) is fixed at cavity (12) inner wall, the lateral wall at slider (136) is fixed to the other end of spring (17).
7. A concrete cable trench construction process according to claim 3, wherein: and a sealing ring plate (18) is fixed on the outer ring wall of the flexible graphite sealing ring (111), and a water-swelling water stop strip (19) is arranged on the side wall of the sealing ring plate (18) and attached to the side wall of the cable trench wall (7).
8. The concrete cable trench construction process of claim 1, wherein: the step S2 further includes a step S21: the cobblestone pavement (20) is laid in the middle of the concrete cushion layer (3), drainage slopes (21) are arranged on two sides of the cobblestone pavement (20), the higher end of each drainage slope (21) faces the cobblestone pavement (20), the lower end of each drainage slope (21) faces the drainage ditch (2) and is provided with a drainage hole (22), and the drainage hole (22) is connected with a drainage pipe (23) and extends into the drainage ditch (2).
9. The concrete cable trench construction process of claim 1, wherein: and the inner wall and the outer wall of the cable trench wall body (7) are coated with cement-based capillary crystalline waterproof paint.
10. The concrete cable trench construction process of claim 1, wherein: the distance between the inner template (41) and the outer template (42) and the side wall of the waterproof board (5) is 8-10 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911089168.3A CN110808564B (en) | 2019-11-08 | 2019-11-08 | Concrete cable trench construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911089168.3A CN110808564B (en) | 2019-11-08 | 2019-11-08 | Concrete cable trench construction process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110808564A true CN110808564A (en) | 2020-02-18 |
| CN110808564B CN110808564B (en) | 2021-02-09 |
Family
ID=69502172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911089168.3A Active CN110808564B (en) | 2019-11-08 | 2019-11-08 | Concrete cable trench construction process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110808564B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864667A (en) * | 2020-08-12 | 2020-10-30 | 陈柯柯 | Double-layer drainage type bridge |
| CN114156785A (en) * | 2021-11-30 | 2022-03-08 | 南京苏秦电力设备安装有限公司 | Power cable laying process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6159399A (en) * | 1992-05-13 | 2000-12-12 | Rascor Spezialbau Gmbh | Procedure for the erection of concrete walls using braced boardings and device to carry out the same |
| CN202391123U (en) * | 2011-12-21 | 2012-08-22 | 中国十七冶集团有限公司 | Sealing split bolt for templates capable of being reused |
| CN102758451A (en) * | 2012-06-01 | 2012-10-31 | 湖北省输变电工程公司 | Concrete cable channel construction process |
| CN106640154A (en) * | 2017-01-13 | 2017-05-10 | 中交四公局第工程有限公司 | Treatment method and structure for water seepage of tunnel lining circular construction joint crack |
| CN206422499U (en) * | 2017-01-03 | 2017-08-18 | 山西省交通科学研究院 | Cold-proof outlet tunnel cable duct structure |
| CN208202558U (en) * | 2018-03-29 | 2018-12-07 | 青岛博海建设集团有限公司 | A kind of top plate reserved holes of pipes mold mechanism convenient for disassembly and assembly |
| CN110311343A (en) * | 2019-07-30 | 2019-10-08 | 四川国统混凝土制品有限公司 | A kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket |
-
2019
- 2019-11-08 CN CN201911089168.3A patent/CN110808564B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6159399A (en) * | 1992-05-13 | 2000-12-12 | Rascor Spezialbau Gmbh | Procedure for the erection of concrete walls using braced boardings and device to carry out the same |
| CN202391123U (en) * | 2011-12-21 | 2012-08-22 | 中国十七冶集团有限公司 | Sealing split bolt for templates capable of being reused |
| CN102758451A (en) * | 2012-06-01 | 2012-10-31 | 湖北省输变电工程公司 | Concrete cable channel construction process |
| CN206422499U (en) * | 2017-01-03 | 2017-08-18 | 山西省交通科学研究院 | Cold-proof outlet tunnel cable duct structure |
| CN106640154A (en) * | 2017-01-13 | 2017-05-10 | 中交四公局第工程有限公司 | Treatment method and structure for water seepage of tunnel lining circular construction joint crack |
| CN208202558U (en) * | 2018-03-29 | 2018-12-07 | 青岛博海建设集团有限公司 | A kind of top plate reserved holes of pipes mold mechanism convenient for disassembly and assembly |
| CN110311343A (en) * | 2019-07-30 | 2019-10-08 | 四川国统混凝土制品有限公司 | A kind of prefabricated steel cylinder concrete circular electric power piping lane with tube socket |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864667A (en) * | 2020-08-12 | 2020-10-30 | 陈柯柯 | Double-layer drainage type bridge |
| CN114156785A (en) * | 2021-11-30 | 2022-03-08 | 南京苏秦电力设备安装有限公司 | Power cable laying process |
| CN114156785B (en) * | 2021-11-30 | 2022-08-23 | 南京苏秦电力设备安装有限公司 | Power cable laying process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110808564B (en) | 2021-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110306616B (en) | Construction method of sewage pipeline | |
| CN101768976B (en) | Base pit dewatering and water saving device and construction method thereof | |
| CN107859064B (en) | Waterproof structure for connection of prefabricated pipe gallery and cast-in-situ pipe gallery and construction method | |
| CN103741714A (en) | Construction method for full cover-excavation reverse method of underground engineering | |
| CN111021509A (en) | Municipal drainage pipeline construction method | |
| CN106640154A (en) | Treatment method and structure for water seepage of tunnel lining circular construction joint crack | |
| CN206319910U (en) | Infiltration disposal system is reinforced in a kind of tunnel-liner | |
| CN110808564B (en) | Concrete cable trench construction process | |
| CN110206073B (en) | Waterproof construction method for lattice column pile and main structure joint | |
| CN107630500A (en) | A kind of water supply and drainage construction method | |
| CN112281924A (en) | Modular combined prefabricated electric power working well and construction method thereof | |
| CN201567582U (en) | Rainwater saving device of foundation pit | |
| CN115262730A (en) | Construction method of rain sewage pipeline | |
| CN109339118A (en) | A kind of basement bottom board leakage-resistant device and construction method | |
| CN113863268B (en) | Construction and debugging process for fabricated sewage treatment station of epidemic prevention emergency engineering | |
| CN111335445B (en) | Construction method of concrete catch basin by using steel pipe as inner mold | |
| KR100456610B1 (en) | Structure method for drainageway of weak stratum and the conduct pipe thereof | |
| CN110965487B (en) | Down-pass passage high-flow reverse-suction siphon sewage pipe and encapsulation treatment construction method | |
| CN103993609A (en) | Silicon lime sand water guiding, draining and filtering multifunctional rapid and rigid congealing body manual repaired foundation pit water-stopping curtain | |
| CN103615043B (en) | Direct-burried drainpipe and the construction method thereof on carrying main equipment or dynamic load ground | |
| CN112900583A (en) | Spatial intersection construction method for rainwater and sewage pipe positions at same elevation | |
| CN115369900B (en) | Comprehensive atrial backfill dewatering well sealing method | |
| CN219261041U (en) | Box-type substation foundation | |
| CN218970185U (en) | Sewage pipe inspection well | |
| CN220644342U (en) | Waterproof structure for bottom of basement outer wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |