CN102383856A - Transportation method for large-slope parallel adit construction - Google Patents
Transportation method for large-slope parallel adit construction Download PDFInfo
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- CN102383856A CN102383856A CN2011101932298A CN201110193229A CN102383856A CN 102383856 A CN102383856 A CN 102383856A CN 2011101932298 A CN2011101932298 A CN 2011101932298A CN 201110193229 A CN201110193229 A CN 201110193229A CN 102383856 A CN102383856 A CN 102383856A
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Abstract
The invention provides a transportation method for large-slope parallel adit construction, which comprises the following steps of: digging a dumping trestle and constructing a retaining wall, by starting to dig the dumping trestle in the parallel adit from a main channel through a horizontal channel, removing a rail from a principal parallel adit section, and pouring the retaining wall of the dumping trestle after completely digging the dumping trestle; constructing a steel structure of the dumping trestle, by overlaying an upper-layer I-shaped steel on an embedded I-shaped steel on a rear wall of the retaining wall, covering an upper-layer covering steel plate on the upper-layer I-shaped steel and finally mounting a dumping port; recovering the rail of the parallel adit; trial-running the transportation; and paving bottom, by constructing base plates of the horizontal channel and the section of a dumping trestle according to a practical slope point after normally debugging and running the dumping trestle. In the transportation method for the large-slope parallel adit construction, the characteristics that the parallel adit, the main channel and the horizontal channel are short and trackless transportation efficiency is high are utilized and a transportation method for combining the track transportation with the trackless transportation is adopted, thereby greatly promoting the dumping efficiency of the parallel adit and improving the present situation of the parallel adit transportation.
Description
Technical field
The present invention relates to that heavy grade is flat leads the construction transportation resources.
Background technology
Present domestic heavy grade is flat leads because section is less; Consider factors such as the air conditions in tunnel and the condition of giving another the right of way, for the single-track railway tunnel, when especially tunneling to 1.5～2.0km; Traditional construction thinking great majority are to adopt single rail means of transportation; Have following two shortcomings: a large amount of inputs of equipment and utilization rate of equipment and installations is extremely low, the heavy duty of heavy grade are gone up a slope and are caused security risk to increase suddenly, and then on schedule honouring an agreement of duration posed a big pressure.Therefore lead at heavy grade flat that to take rational transportation resources be the key that will improve utilization rate of equipment and installations, accelerate circulation timei.
The method of tunnel drilling and blasting construction technology is very ripe at present; The construction transportation resources has become influences the flat critical process of leading construction speed of heavy grade; Can this operation be connected duration that directly has influence on whole tunnel and economic effect with other operations smoothly, is the key of engineering construction progress speed.State's inner tunnel means of transportation mainly divides rail transportation and trackless to transport two kinds, and how to accomplish transport task efficiently is the flat technological difficulties of leading construction of heavy grade always, along with the flat haul distance of leading increases, to the expense sharp increase of rail system, locomotive maintenance maintenance.How improving the high-effect of transportation system, is the flat direction that construction is updated and studied of leading.The domestic tunnel methods that increase mechanical quantity or improve mechanical performance that adopt in the flat improvement of leading transportation system of growing up more, poor effect, construction and maintenance be difficulty, and construction cost is bigger.
Summary of the invention
The jade of undertaking the construction of the applicant covers that tunnel, the railway super long tunnel engineering Xiushan Mountain is flat leads in the construction, and rail transportation haul distance reaches 5109m, and haul distance is extremely long, and full tunnel is an one-way slope, and maximum gradient is 20.4 ‰, and loaded vehicle goes up a slope, and heavy grade is flat leads transportation resources directly influences construction speed.
For guaranteeing programming, the applicant has carried out scientific and technical innovation, has adopted rail transportation and the transportation resources that the trackless transportation combines, and has improved the flat transportation present situation of leading greatly.
The invention provides that a kind of heavy grade is flat leads the construction transportation resources; May further comprise the steps: slag dumping trestle excavation and barricade construction, put down the slag dumping trestle in leading from positive hole through the transverse passage-way excavation, remove flat track of leading this section; After excavation slag dumping trestle is accomplished, build the barricade of slag dumping trestle; Slag dumping trestle Construction of Steel Structure, stack upper strata i iron covers steel plate on the upper strata of this upper strata i iron on the pre-buried i iron of the parados of said barricade, installs at last and unloads cinder notch; Recover the level gauge road; Transportation is connected operation; And the shop fixtures construction, after slag dumping trestle commissioning test is normal, execute the base plate of making transverse passage-way and slag dumping trestle section according to actual knick point.
Further, slag dumping trestle excavation and barricade construction sequence comprise excavation supporting and barricade construction, and barricade is constructed and comprised the concreting of parados and left and right sides aileron, when building, advance in the concrete i iron is pre-buried.
Further, in slag dumping trestle Construction of Steel Structure step, cinder notch adopts steel plate and i iron to be welded.
Further, in recovering level gauge road step, at first the slag dumping trestle is carried out the static load load test, confirm steel work compressive strength, on the slag dumping trestle, weld clamping plate then, level gauge road rail is installed, after accomplishing the shuttle mine car is carried out test run.
Further, be connected in the operating procedure, through trying the quantity of confirming required shuttle mine car, tipping truck and upright pawl out, and confirm flat knick point and the length of grade that gets into positive hole section of leading according to the actual performance of on-the-spot vehicle self in transportation.
Further, the slag dumping trestle is arranged on flat leading under the rail, and the interior headroom of slag dumping trestle is wide 4.0m * high 3.5m * long 6.0m; The shop fixtures of slag dumping trestle adopts hardening of concrete, sclerosis thickness 20cm; At the flat abutment wall bottom construction concrete parados just of leading, thickness 35cm, wide 4.2m, high 3.70m is with left and right sides aileron overlap joint 10cm; Perpendicular to the flat construction concrete left and right sides, the both sides aileron of an abutment wall just, the wide 1.5m in wall top of left wing, the wide 4.5m in bottom, the wide 1.2m in right flank wall top, the wide 3.0m in bottom, the basis that certain altitude is established in aileron bottom, the left and right sides of leading; The pre-buried sleeper that is connected with the level gauge road on the aileron of the left and right sides.
Further; The slag dumping trestle is positioned at puts down the crossover location place that leads with transverse passage-way; Near the slag dumping trestle level gauge road is set to double, and flat conducting is crossed the shuttle mine car and is transported to slag dumping trestle position, and the hole slag is unloaded the cinder notch tipping truck of packing into through the slag dumping trestle; Tipping truck gets into positive hole through transverse passage-way, and the hole slag is transported to outside the hole.
This heavy grade provided by the invention is flat leads that construction transportation resources utilization is flat to be led with positive hole transverse passage-way shortlyer, and the characteristics that the trackless conevying efficiency is high make the flat slag efficient that derives improve.By this transportation resources, along with the extension of tunnel piercing length, transport pressure is influenced obtaining corresponding reduction by haul distance, and energy consumption is low, flight-line maintenance maintenance difficulty is little, construction cost is low, has reduced mechanical update, and is workable.
Cover specific to jade that the applicant undertook the construction of that tunnel, the railway super long tunnel engineering Xiushan Mountain is flat leads construction, have 25 transverse passage-ways in the Tunnel Design scope, flatly lead transport pressure, the slag dumping harbour is set at No. 7 transverse passage-ways in order to alleviate.Flat leading when adopting the rail transportation to construct to 2.5km, because the heavy duty of long distance is gone up a slope, the storage battery loss is serious, needs were changed one group of storage battery in average 5～6 months, and every circulation muck removal time reaches 6～7 hours (60m
3).Consider that utilization rate of equipment and installations is extremely low; The security risk of long distance heavy duty upward slope slide car is high; Be accelerating construction progress simultaneously, transportation resources breaks through tradition and changes: utilize No. seven corresponding flat positions of leading of transverse passage-way that the slag dumping trestle hole in is set, put down slag dumping trestle slag dumping that the hole slag of leading is transported to No. seven transverse passage-way places through rail to dump truck; Be transported to waste field or roadbed outside the hole through positive hole trackless, realized combining in the hole of rail and trackless transportation resources.
Technique effect according to this kind transportation resources is received is described from speed of application and economic benefit two aspects respectively.The speed of application contrast table is seen table 1, and the economic efficiency contrast table is seen table 2.
Table 1 speed of application contrast table
Table 2 economic efficiency contrast table
Description of drawings
Fig. 1 is a slag dumping passage construction process chart;
Fig. 2 is a slag dumping trestle working drawing;
Fig. 3 is a slag dumping trestle elevation;
Fig. 4 is slag dumping trestle cross section and No. seven transverse passage-way skiagraphs;
Fig. 5 organizes sketch map for slag dumping trestle layout and transportation;
Fig. 6 unloads quarrel mouthful operation drawing for the slag dumping trestle.
Among the figure: the flat abutment wall just of leading of 1-; The 2-parados; 3-left wing wall; 4-right flank wall; The 5-shop fixtures; The 6-sleeper; 7-level gauge road 1.; 8-level gauge road 2.; 9-shuttle mine car; The 10-tipping truck; The 11-trestle; 12-unloads cinder notch; The flat guiding center of 13-line; 14-first knick point; 15-second knick point; The positive hole of 16-center line; Tread face in the 17-; No. seven transverse passage-ways of 18-; The positive hole of 19-; 20-is flat to be led; The 21-rail; 22-upper strata i iron; The 23-1cm steel plate; 24-I20 worker's steel.
The specific embodiment
Below, it is example that the jade of undertaking the construction of with the applicant covers railway super long tunnel engineering Xiushan Mountain constructing tunnel engineering, the heavy grade of introducing the application is flat leads the construction transportation resources.The distance that wherein relates to, the gradient, length of grade, length, width, highly, numerical value such as transverse passage-way quantity all is the actual conditions according to this concrete engineering, and is definite in conjunction with the general knowledge of this area.It will be recognized by those skilled in the art that these numerical value are not limited to situation described herein, can make suitable choice, to reach good construction effect according to actual demands of engineering.
Fig. 2 is a slag dumping trestle working drawing.The concrete size of slag dumping trestle is with reference to Fig. 2 and Fig. 3.Trestle 11 is arranged on flat leading under the PDK29+672 place rail, and the interior headroom of trestle 11 is 4.0m (wide) * 3.5m (height) * 6.0m (length).Trestle shop fixtures 5 adopts the C20 hardening of concrete, sclerosis thickness 20cm.At the flat abutment wall 1 bottom construction C20 concrete parados 2 just of leading, thickness is 35cm, wide 4.2m, and high 3.70m is with left and right aileron 3,4 overlap joint 10cm.Perpendicular to the flat left and right aileron 3,4 of both sides construction C20 concrete of an abutment wall just of leading, the wide 1.5m in left wing's wall 3 tops, the wide 4.5m in bottom, the wide 1.2m in right flank wall 4 tops, the wide 3.0m in bottom, the high basis of 1m is established in aileron bottom, the left and right sides.Pre-buried sleeper 6 is connected with 8 with level gauge road 7 on the aileron of the left and right sides.
Fig. 3 is a slag dumping trestle elevation.Aileron construction in the slag dumping trestle left and right sides is accomplished the back trestle 11 is installed, and on trestle 11, installs and unload cinder notch 12, laying level gauge road 7,8, and shuttle mine car 9 is through unloading cinder notch 12 tipping truck 10 of packing into.
Fig. 4 is the slag dumping trestle and the passage longitudinal section dimensional drawing of mucking haulage.Tipping truck gets into positive hole through No. seven transverse passage-ways 18.Flat guiding center line 13 is 30m with positive hole center line 16 vertical distances.No. seven transverse passage-way is divided into three parts, and first is flat guiding center line 13 to first knick points 14, the gradient 2%, length of grade 6.52m; Second portion is first knick point, 14 to second knick points 15, the gradient 11.8%, length of grade 17.07m; Third part is second knick point 15 to a positive hole center line 16, the gradient 2%, length of grade 642cm.
Fig. 5 organizes sketch map for slag dumping trestle layout and transportation.Trestle 11 is positioned at the flat transverse passage-way 18 crossover location places that lead 20 and No. seven.Flatly near the trestle 11 lead conveying track and be set to double; Be respectively level gauge road 7 peaceful guideways 8; Flat conducting is crossed shuttle mine car 9 and is transported to trestle 11 positions; The hole slag is unloaded cinder notch 12 (see figure 4)s tipping truck 10 (see figure 4)s of packing into through what trestle was reserved, and tipping truck 10 (see figure 4)s get into positive holes 19 through No. seven transverse passage-ways 18, are transported to outside the hole.
Below, the jade of undertaking the construction of with the applicant covers tunnel, the railway super long tunnel engineering Xiushan Mountain, and flat to lead construction be example, introduces the application's the flat concrete steps of leading the construction transportation resources of heavy grade.
One, preparation of construction
1, rail transportation, rail+Construction with Trackless Transportation scheme are compared research and design implementation scheme.
2, confirm rail transportation and trackless transportation switching node, vehicle fleet size, track laying design according to on-site actual situations, guarantee that means of transportation is scientific and reasonable.
3, make rational planning in switching node position trestle size and headroom, transverse passage-way longitudinal gradient executed work.
4, organize manpower the other side case implementation result to carry out statistical analysis, confirm design parameters, economic benefit etc.Special maintenance teams and groups are set, track, road surface are maintained.
Two, slag dumping trestle excavation and barricade construction
1, excavation supporting
Put down the slag dumping trestle in leading from positive hole through the transverse passage-way excavation, remove flat track of leading this section.Before formal excavation, the flat bow member of leading in the slag dumping trestle scope is increased lock foot anchoring stock, 2 of every Pin, 4 meters of length.Note taking weak explosion or loosening blasting during excavation, reduce as far as possible upper flat is led an effect on structure just, and note the country rock plain spray 5cm of every circulation excavation back the trestle both sides.
2, barricade construction
After excavation was accomplished, formwork erection was built vertically (flat lead road direction) C20 concrete parados 2 of trestle, concrete thickness 35cm (particular location and size are seen figure) immediately.Close mould then and build the left and right foundation of wall, adopt the C20 plain concrete, foundation width is respectively 3.5m and 5.0m, highly is 1m, and length is 6m.After the left and right foundation of wall reached intensity, formwork erection was built left and right sides aileron wall body, adopted the C20 concrete, the wall wall body top thickness 1.5m of left wing, bottom 4.5m, right flank wall wall body top thickness 1.2m, bottom 3m.It should be noted that and when building, note advancing in the concrete the I20 i iron is pre-buried.The concrete size of barricade is with reference to Fig. 2 and Fig. 3.
Three, slag dumping trestle Construction of Steel Structure
After barricade was accomplished, stack upper strata i iron 22 on the pre-buried I20 i iron 24 of parados 2 was used Φ 22 reinforcing bar firm welding therebetween, and i iron 22 upper stratas cover the thick steel plate 23 of 1cm on the upper strata, install at last and unload cinder notch 12.Unload cinder notch 12 and adopt 1cm steel plate and I20 i iron to be welded, note the welding quality of joint.Specifically execute work with reference to Fig. 6.
Four, recover the level gauge road
Carrying out the level gauge road after slag dumping trestle Construction of Steel Structure finishes recovers.At first trestle is carried out the static load load test, confirm steel work compressive strength, on trestle, weld clamping plate, attachment rail rail then.Accomplish the back shuttle mine car is carried out test run, the test run order is by gently to weight.
Five, transportation is connected operation
Whether each link of confirming whole system through the trial run of three circulations can effectively be connected continuous productive process.In this process, confirm several big key element of system operation:
1, vehicle fleet size
The scene needs 4 in shuttle mine car, 3 of tipping trucks, 1 of upright pawl.
2, transverse passage-way knick point
Confirm flat knick point and the length of grade that gets into positive hole section of leading according to the actual performance of on-the-spot vehicle self, guarantee that vehicle can go smooth and easy.
3, pumping system and scarfing cinder
Because of the tunnel rich groundwater, easy ponding under the trestle must arrange the special messenger to carry out pump drainage water.The hole slag cleaning that the special messenger is scattered is set.
Six, shop fixtures construction
After the trestle commissioning test is normal, execute the base plate of making transverse passage-way and trestle section according to actual knick point.Once execute make length must not be greater than 10m.Digging machine is slagged tap, and the tipping truck transportation after the artificial scarfing cinder, is built the C20 concrete, and concrete strength just allows trestle formally to come into operation after reaching 5MP.
Seven, conevying efficiency inspection
It is face that single rail transportation starting point is adopted in former design, and terminal point is a trestle outside the hole, rail transportation single cycle 4h average time.The trackless means of transportation does not have influence to the flat slag of deriving average time in rail+trackless transportation resources, only adds up No. seven transverse passage-way trestle rail haulage times in face to the hole.Arrange the operator on duty to carry out statistical analysis according to scene each link of transportation, comprise on-the-spot actual slag-removing time, rail haulage time, specifically see table 3 transporting each factor.
Table 3 transportation cycle time statistical form
Every mine car actual capacity is 10m
3(theoretical capacity is 14m
3), every circulation quantity of slag is 67.9m
3, there is 4 in shuttle mine car at the scene, whenever recycles 7 order of classes or grades at school of shuttle mine car, actual slag tap to the time at No. seven transverse passage-way slag dumping trestle places be 1.8h.
Eight, summary of Design
As the tunnel of growing up, along with the continuous driving in tunnel, haul distance constantly increases, and the advantage of this kind transportation resources will be more obvious.Practice through this transportation resources is accumulated experience, for technical foundation has been established in next switching node construction.
Though embodiments of the invention have been described with reference to the drawings above, it will be understood by those skilled in the art that under the situation that does not break away from the scope of the invention and spirit, can make various modification and variation to the present invention.Therefore, should be appreciated that the above embodiments are not restrictions, but the illustrating of various aspects.
Claims (7)
1. a heavy grade is put down and is led the construction transportation resources, may further comprise the steps:
Slag dumping trestle excavation and barricade construction are put down the slag dumping trestle in leading from positive hole through the transverse passage-way excavation, remove flat track of leading this section, after the completion of excavation slag dumping trestle, build the barricade of slag dumping trestle;
Slag dumping trestle Construction of Steel Structure, stack upper strata i iron covers steel plate on the upper strata of this upper strata i iron on the pre-buried i iron of the parados of said barricade, installs at last and unloads cinder notch;
Recover the level gauge road;
Transportation is connected operation; And
The shop fixtures construction after slag dumping trestle commissioning test is normal, is executed the base plate of making transverse passage-way and slag dumping trestle section according to actual knick point.
2. heavy grade according to claim 1 is put down and is led the construction transportation resources; Wherein said slag dumping trestle excavation and barricade construction sequence comprise excavation supporting and barricade construction; Barricade construction comprises the concreting of parados and left and right sides aileron, when building, advances in the concrete i iron is pre-buried.
3. heavy grade according to claim 1 is put down and is led the construction transportation resources, and wherein in said slag dumping trestle Construction of Steel Structure step, the said cinder notch that unloads adopts steel plate and i iron to be welded.
4. heavy grade according to claim 1 is put down and is led the construction transportation resources; Wherein in said recovery level gauge road step; At first the slag dumping trestle is carried out the static load load test, confirm steel work compressive strength, on the slag dumping trestle, weld clamping plate then; Level gauge road rail is installed, after accomplishing the shuttle mine car is carried out test run.
5. heavy grade according to claim 1 is put down and is led the construction transportation resources; Wherein be connected in the operating procedure in said transportation; Through trying the quantity of confirming required shuttle mine car, tipping truck and upright pawl out, and confirm flat knick point and the length of grade that gets into positive hole section of leading according to the actual performance of on-the-spot vehicle self.
6. heavy grade according to claim 1 is put down and is led the construction transportation resources, and wherein the slag dumping trestle is arranged on flat leading under the rail, and the interior headroom of slag dumping trestle is wide 4.0m * high 3.5m * long 6.0m; The shop fixtures of slag dumping trestle adopts hardening of concrete, sclerosis thickness 20cm; At the flat abutment wall bottom construction concrete parados just of leading, thickness 35cm, wide 4.2m, high 3.70m is with left and right sides aileron overlap joint 10cm; Perpendicular to the flat construction concrete left and right sides, the both sides aileron of an abutment wall just, the wide 1.5m in wall top of left wing, the wide 4.5m in bottom, the wide 1.2m in right flank wall top, the wide 3.0m in bottom, the basis that certain altitude is established in aileron bottom, the left and right sides of leading; The pre-buried sleeper that is connected with the level gauge road on the aileron of the left and right sides.
7. heavy grade according to claim 1 is put down and is led the construction transportation resources; Wherein the slag dumping trestle is positioned at and puts down the crossover location place that leads with transverse passage-way; Near the slag dumping trestle level gauge road is set to double, and flat conducting is crossed the shuttle mine car and is transported to slag dumping trestle position, and the hole slag is unloaded the cinder notch tipping truck of packing into through the slag dumping trestle; Tipping truck gets into positive hole through transverse passage-way, and the hole slag is transported to outside the hole.
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| CN109681266A (en) * | 2018-12-25 | 2019-04-26 | 中铁六局集团天津铁路建设有限公司 | Heavy grade inclined shaft concrete transportation method |
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Application publication date: 20120321 |