CN114233384B - Open channel section construction system and method adopting layer-by-layer drainage method - Google Patents
Open channel section construction system and method adopting layer-by-layer drainage method Download PDFInfo
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- CN114233384B CN114233384B CN202111650993.3A CN202111650993A CN114233384B CN 114233384 B CN114233384 B CN 114233384B CN 202111650993 A CN202111650993 A CN 202111650993A CN 114233384 B CN114233384 B CN 114233384B
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- 238000010276 construction Methods 0.000 title claims abstract description 169
- 238000000034 method Methods 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 129
- 239000004576 sand Substances 0.000 claims abstract description 59
- 238000009412 basement excavation Methods 0.000 claims abstract description 37
- 230000037452 priming Effects 0.000 claims abstract description 12
- 230000000903 blocking effect Effects 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims 7
- 230000000750 progressive effect Effects 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 230000003068 static effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 241000826860 Trapezium Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F16/00—Drainage
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Abstract
The invention discloses a system and a method for constructing an open channel section by adopting a layer-by-layer drainage method, wherein the system comprises the following steps: each construction platform that arranges in proper order along the excavation direction, construction platform are the trapezoidal structure that the top is wide at the end is narrow along horizontal radial direction, and each construction platform's height of arranging reduces gradually in order to constitute the hierarchical platform structure of step, and all has arranged the multitube self priming pump drainage system that supplies open channel section drainage on each construction platform, forms inclined plane structure and constitutes open channel section along excavating entry to the target degree of depth, open channel section includes a plurality of construction layers that are the same with hierarchical platform structure quantity and construct in proper order along the plumb direction. The core thought of the degradation drainage construction system and method for open channel section construction is to block peripheral water flow of open channel excavation through special construction measures in the excavation process, wherein the construction measures comprise step-by-step drainage and step-by-step excavation until the final design excavation size is reached, and finally, the water content of a sand layer in the open-out range of the open channel is effectively controlled.
Description
Technical Field
The invention relates to the technical field of open channel section construction, in particular to an open channel section construction system and method adopting a layer-by-layer drainage method.
Background
At present, partial mines in the area mostly adopt inclined shaft development modes, the mines are in desert areas, open groove sections are in water-containing sand layers, and a centralized dewatering method or a construction dewatering well method is often adopted for construction drainage.
In the actual construction process, the staff gradually find: in the drainage process, the sand layer group of the open channel section of a part of areas is very loose, so that the consolidation capacity is poor, the water permeability is strong, the compression performance is high, the strength is low, and the stability is crossed, so that the quality of open channel construction is poor, and the sand layer collapse phenomenon of the large-area open channel section often occurs in the construction process, so that the actual construction is difficult. In order to improve the construction dewatering method of the open channel section and improve the construction quality of the open channel, the inventor designs a step-by-step drainage construction system and method for the construction of the open channel section through investigation, demonstration and technical innovation so as to improve the construction quality of the open channel section as much as possible.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the open channel section construction system and the method adopting the layer-by-layer drainage method, and the purpose of dewatering and sand fixation is achieved by excavating layer by layer in the layer-by-layer drainage mode in the open channel section construction process, so that the quality of open channel construction is improved, and the low cost, the high speed and the quality and the safety of the open channel section construction are ensured.
In order to achieve the above object, the present invention provides a system for constructing an open channel section by adopting a layer-by-layer drainage method, comprising: each construction platform that arranges in proper order along the excavation direction, construction platform are the trapezoidal structure that the top is wide at the end narrow along horizontal radial direction, and each construction platform's height of arranging reduces gradually in order to constitute the hierarchical platform structure of step, and all has arranged the multitube self priming pump drainage system that supplies open channel section drainage on each construction platform, excavates the narrow edge that the entry is located the construction platform of top layer, forms inclined plane structure and constitutes open channel section along the excavation entry to the target degree of depth, open channel section includes a plurality of construction layers that are the same and follow plumb direction sequential construction with hierarchical platform structure quantity. I.e. in the system: the construction platform of a same layer is constructed, the drainage of the multi-pipe self-priming pump drainage system and the construction of the open channel section form a construction layer, and the layered construction of the open channel section is realized, so that a construction team can finish each construction layer one by one along the excavation direction.
As a further optimization of the scheme, the multi-pipe self-priming pump drainage system comprises a plurality of multi-pipe self-priming pumps which are transversely arranged in a trapezoid structure layer by layer, one multi-pipe self-priming pump is connected with a plurality of water sucking and draining pipes which penetrate through a water-containing sand layer below a construction platform through a pipe separator, and the output ends of all the multi-pipe self-priming pumps drain water in the same drainage assembly through the draining pipes. Through connect a plurality of multitube self priming pumps on a drainage subassembly to realize the simultaneous working of all multitube self priming pumps, so that realize the continuous drainage of the outside water-containing sand layer of open channel section.
As a further optimization of the scheme, the multi-pipe self-priming pump drainage system further comprises a water level observation well which is arranged on the construction platform and is convenient for observing the liquid level in the water level observation well in real time. So as to observe the precipitation effect of the multi-pipe self-priming pump through the water level observation well, and open trench excavation can be carried out if the requirement of the excavation precipitation depth is met; on the contrary, the number of the multi-pipe self-priming pumps can be increased at proper positions so as to improve the dewatering effect and ensure the smooth operation of open channel section construction.
As a further optimization of the scheme, an operation space is reserved on each layer of construction platform, and sand blocking piles are arranged on the operation space. So as to prevent the quicksand on the slope above the construction platform from rushing into the bottom of the open channel section.
As a further optimization of the scheme, an operation platform is arranged outside the construction platform of the top layer, a drainage ditch for placing the output end of the drainage pipe is excavated on the operation platform, and the drainage assembly comprises a water pump positioned in the drainage ditch and a water collecting part connected with the output end of the water pump. Because the water collecting part in the construction process of the open channel section is the reservoir appointed by the first party, and the reservoir is generally separated from the open channel section by a distance, the temporary drainage is carried out through the drainage ditch so as to reduce the service length of the drainage pipe connected with the multi-pipe self-priming pump, and only one or two water delivery pipes are connected between the water pump and the water collecting part, thereby greatly saving the construction cost.
A construction method of an open channel section by adopting a layer-by-layer drainage method comprises the following steps:
s1, constructing a hierarchical platform structure: constructing a multilayer hierarchical platform structure which is gradually reduced from top to bottom along the vertical radial direction from the digging entrance along the digging direction, wherein the cross section of the hierarchical platform structure is in a trapezoid structure.
S2, constructing a multi-pipe self-priming pump drainage system: a plurality of multi-pipe self-priming pumps are arranged layer by layer along the digging direction on the hierarchical platform structure, and the multi-pipe self-priming pumps on the same layer form a trapezoid structure, each multi-pipe self-priming pump is connected with a plurality of water sucking and draining pipes which are positioned deep into the water-containing sand layer below the hierarchical platform structure through a pipe separator, the output ends of all multi-pipe self-priming pumps drain water in the same draining assembly through the draining pipes, and the multi-pipe self-priming pumps, the pipe separator, the water sucking and draining pipes, the draining pipes and the draining assembly form a multi-pipe self-priming pump draining system.
S3, pumping water layer by layer: and draining water layer by layer along the digging direction through a multi-pipe self-priming pump drainage system.
S4, digging downwards layer by layer: and (3) excavating the open channel section layer by layer in sequence following the step S until the construction of the open channel section is finished.
As a further optimization of the above scheme, further comprising:
S5, sand bed bottom plate protection: after the construction of the open channel section is finished, a sand blocking and water treating platform is built on the sand layer bottom plate, and the sand blocking and water treating platform can be formed by one or more of steel pipe piles, bamboo splints and sand stacking bags.
The method has the core thought that peripheral water flow of open trench excavation is blocked through special construction measures in the excavation process, the construction measures comprise step-by-step drainage and step-by-step excavation until the designed excavation size is finally reached, the water content of a sand layer in the open-out range of the open trench is finally and effectively controlled, the condition that the sand layer is surging and collapsing is avoided due to open trench excavation, and the open trench construction environment is improved.
As a further optimization of the above scheme, after the construction of the hierarchical platform structure in step S1 is completed, an operation space is reserved on each hierarchical platform structure, and sand blocking piles are embedded in the operation space. So as to prevent the quicksand on the slope above the construction platform from rushing into the bottom of the open channel section.
As a further optimization of the above scheme, in step S2, an operation platform is constructed outside the top layer of the hierarchical platform structure, a drain for placing the output end of the drain pipe is excavated on the operation platform, and the drain assembly includes a water pump located in the drain and a water collecting part connected to the output end of the water pump. Because the water collecting part in the construction process of the open channel section is the reservoir appointed by the first party, and the reservoir is generally separated from the open channel section by a distance, the temporary drainage is carried out through the drainage ditch so as to reduce the service length of the drainage pipe connected with the multi-pipe self-priming pump, and only one or two water delivery pipes are connected between the water pump and the water collecting part, thereby greatly saving the construction cost.
As a further optimization of the scheme, after the step S3 is completed and before the step S4 is executed, a water level observation well which can be convenient for observing the liquid level height in the water level observation well in real time is arranged on the construction platform. So as to observe the precipitation effect of the multi-pipe self-priming pump through the water level observation well, and open trench excavation can be carried out if the requirement of the excavation precipitation depth is met; on the contrary, the number of the multi-pipe self-priming pumps can be increased at proper positions so as to improve the dewatering effect and ensure the smooth operation of open channel section construction.
The open channel section construction system and method adopting the layer-by-layer drainage method have the following beneficial effects:
1) The core thought of the degradation drainage construction system and method for open trench section construction is to block peripheral water flow of open trench excavation through special construction measures in the excavation process, wherein the construction measures comprise step-by-step drainage and step-by-step excavation until finally reaching the designed excavation size, so that the water content of a sand layer in the open outer range of the open trench is finally and effectively controlled, the situation that the sand burst collapses on the side wall in the open trench excavation process is avoided, and the open trench construction environment is improved.
2) According to the drainage system of the multi-pipe self-priming pump, which is adopted by the invention, continuous drainage of all multi-pipe self-priming pumps can be realized through one drainage structure, and according to actual measurement and calculation, the drainage mode of the drainage system of the multi-pipe self-priming pump is 1m 3 compared with the traditional drainage mode, and 50-90 yuan can be saved approximately, so that the actual drainage cost of open trench excavation is greatly reduced.
Specific embodiments of the invention have been disclosed in detail below with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed, it being understood that the embodiments of the invention are not limited in scope but are capable of numerous variations, modifications and equivalents within the spirit and scope of the appended claims.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an open channel section construction system employing a layer-by-layer drainage method;
FIG. 2 is a schematic view of the overall structure of a laminate platform structure according to the present invention;
FIG. 3 is a schematic diagram of the overall structure of the multi-pipe self-priming pump drainage system of the present invention;
FIG. 4 is a schematic view of the overall structure of the open channel segment of the present invention;
fig. 5 is a schematic workflow diagram of an open channel construction method using a layer-by-layer drainage method.
In the figure: 1. a construction platform; 2. a multi-pipe self-priming pump drainage system; 3. digging an inlet; 4. an open channel section; 5. a water level observation well; 6. an operation space; 7. an operating platform; 21. a multi-tube self-priming pump; 22. a tube separator; 23. a water suction pipe; 24. a drain pipe; 25. a drainage assembly; 41. a construction layer; 61. a sand blocking pile; 71. a drainage ditch; 251. a water pump; 252. a water collecting part.
Detailed Description
The present invention will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that, when an element is referred to as being "disposed on," or having an intermediate element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected to," or having an intermediate element, it may be directly connected to the other element or intervening elements may be present, and the term "fixedly connected" is used herein in a wide variety of manners and is not intended to be limiting, and the terms "vertical", "horizontal", "left", "right", and the like are used herein for illustrative purposes only and are not meant to be exclusive embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in this description are for the purpose of describing particular embodiments only and are not intended to limit the invention to any and all combinations of one or more of the associated listed items;
Referring to fig. 1-3 of the specification, the present invention provides a technical solution: an open channel section construction system employing a layer-by-layer drainage method, comprising: each construction platform 1 that arranges in proper order along the excavation direction, construction platform 1 is wide at top and narrow at the bottom trapezium structure along horizontal radial direction, and each construction platform 1's arrangement height reduces gradually in order to constitute the hierarchical platform structure of step, and all arranges the multitube self priming pump drainage system 2 that supplies open channel section drainage on each construction platform 1, excavates entry 3 and lies in the narrow edge of construction platform 1 on top layer, forms inclined plane structure and constitutes open channel section 4 along excavating entry 3 to the target degree of depth, open channel section 4 includes a plurality of construction layers 41 the same and follow plumb direction sequential construction with hierarchical platform structure quantity. I.e. in the system: the construction platform 1 on the same layer is constructed, the drainage of the multi-pipe self-priming pump drainage system 2 and the construction of the open channel section 4 form a construction layer, and the layered construction of the open channel section 4 is realized, so that a construction team can finish each construction layer one by one along the excavation direction.
As a still further specific scheme of the above scheme, the multi-pipe self-priming pump drainage system 2 includes a plurality of multi-pipe self-priming pumps 21 arranged in a layer-by-layer transverse trapezoid structure, one multi-pipe self-priming pump 21 is connected with a plurality of water sucking and draining pipes 23 penetrating into the water-containing sand layer below the construction platform 1 through a pipe separator 22, and the output ends of all multi-pipe self-priming pumps 21 drain water in the same drainage assembly 25 through a draining pipe 24. By connecting a plurality of multi-pipe self-priming pumps 21 to one drainage assembly 25, the simultaneous operation of all multi-pipe self-priming pumps 21 is realized, so that the continuous drainage of the water-containing sand layer outside the open channel section 4 is realized.
In order to be convenient for observe the precipitation effect of multitube self priming pump 21, multitube self priming pump drainage system 2 still includes seting up on construction platform 1 and be convenient for observe the interior liquid level's of water level observation well 5 in real time water level observation well 5. If the requirement of the depth of the excavated precipitation is met, open trench excavation can be carried out; on the contrary, the number of the multi-pipe self-priming pumps can be increased at proper positions so as to improve the dewatering effect and ensure the smooth operation of open channel section construction.
Considering the condition that the running sand on the side slope above the layer of construction platform 1 floods into the bottom of the open channel section 4, the invention reserves an operation space 6 on each layer of construction platform 1, and a sand blocking pile 61 is arranged on the operation space 6.
For the operation platform 7 constructed outside the construction platform 1 on the top layer, a drain 71 for placing the output end of the drain pipe 24 is excavated on the operation platform 7, and the drain assembly 25 includes a water pump 251 positioned in the drain 71 and a water collecting part 252 connected to the output end of the water pump 251.
Referring to fig. 5 of the specification, an embodiment of a method for constructing an open channel segment by adopting a layer-by-layer drainage method is shown as follows:
Example 1;
a open trench construction section of a subsidiary inclined shaft of a certain project;
Target geological conditions: the water inflow amount of the excavation of the engineering open groove section is about 255m & lt 3 & gt/h according to geological data, and the sand layer group of the engineering open groove section is extremely loose, poor in consolidation capability, strong in water permeability, high in compression performance, low in strength and crossed in stability.
The construction process comprises the following steps:
Because of the geological characteristics of the construction targets, the conventional centralized dewatering method or construction dewatering well method has the risk of collapse of the sand layer of the large-area open channel section, and cannot meet the construction requirements of the open channel construction section; therefore, the water content of the sand layer in the outer range of the open trench construction section is controlled by adopting the degradation drainage construction method for open trench section construction, the condition that the sand burst and collapse are caused by open trench is avoided, and the open trench construction environment is improved.
By carrying out detailed topographic and geological condition exploration on a construction site, determining the position of a construction section of an open trench, preparation before construction is completed, specifically, before construction, construction technicians need to carefully carry out safety technical delivery to the construction personnel, and the construction technicians need to carry out the specific construction steps shown in the figure 1:
s1, constructing a hierarchical platform structure: the method comprises the steps that a multi-layer hierarchical platform structure which is gradually reduced along the vertical radial direction is built from top to bottom along the excavation direction through an excavation entrance, a slope is connected between the lower edge of the upper layer of platform and the lower edge of the lower layer of platform, and the angle of the slope is less than or equal to 35 degrees.
And the cross section of the hierarchical platform structure is in a trapezoid structure.
Preferably, after the construction of the layered platform structure in step S1 is completed, an operation space 6 is reserved on each layered platform structure, and in this embodiment, the operation space is preferably selected to be 2.5m, and the sand blocking pile 61 is embedded in the operation space 6.
S2, constructing a multi-pipe self-priming pump drainage system: the multi-pipe self-sucking pumps 21 are arranged layer by layer along the digging direction on the hierarchical platform structure, and it is required to be explained that before the multi-pipe self-sucking pumps 21 are arranged, the static water level line of sand layer sections is detected and the multi-pipe self-sucking pumps 21 are guaranteed to be arranged on the static water level line, so that normal water drainage of the multi-pipe self-sucking pumps 21 is guaranteed, the multi-pipe self-sucking pumps 21 on the same layer form a trapezoid structure, each multi-pipe self-sucking pump 21 is connected with a water sucking and draining pipe 23 of a plurality of water-containing sand layers through a pipe separator 22, the water sucking and draining pipe can adopt a porous pipe, one section of the water sucking and draining pipe 23 with a flower hole is wrapped by adopting multi-layer gauze so as to avoid the phenomenon of blocking pipes caused by sand suction, and the output ends of all the multi-pipe self-sucking pumps 21 are discharged into the same water draining assembly 25 through the water draining pipe 24, and the multi-pipe self-sucking pumps 21, the pipe separator 22, the water sucking and the water draining pipe 23, the water draining pipe 24 and the water draining assembly 25 form the multi-pipe self-sucking pump draining system 2.
As a further specific scheme of the scheme, in the embodiment, the number of the multi-pipe self-priming pumps is 40-100.
It should be noted that, in the present invention, the length of the water suction and drainage pipe 23 may be 4-12m, the pipe separator 22 is a self-made steel pipe with a length of 2-4m, the reserved holes are all provided on each layer of the hierarchical platform structure in advance, and the distance between two adjacent reserved holes may be adjusted along with the water quantity, for example, when the water quantity is large, the distance between two reserved holes may be smaller than 2m, and when the water quantity is small, the distance between two reserved holes may be larger than 2m, preferably, the pile type drilling tool may be used for the hole opening operation, and the length of the flower hole end of the water suction and drainage pipe 23 penetrating into the reserved hole is generally 2-5m.
Preferably, an operation platform 7 is constructed outside the top layer of the hierarchical platform structure, a drain 71 for placing the output end of the drain pipe 24 is excavated on the operation platform 7, and the drain assembly 25 includes a water pump 251 positioned in the drain 71 and a water collecting part 252 connected to the output end of the water pump 251.
S3, pumping water layer by layer: and water is discharged layer by layer along the digging direction through the multi-pipe self-priming pump water discharge system 2.
A water level observation well 5 which is convenient for observing the liquid level height in the water level observation well 5 in real time is arranged on the construction platform 1.
S4, digging downwards layer by layer: and (3) the construction of the open channel section 4 is followed by the step (S3) to sequentially dig downwards layer by layer until the construction of the open channel section 4 is finished.
S5, sand bed bottom plate protection: after the construction of the open groove section 4 is finished, a sand blocking and water treating platform is built on the sand layer bottom plate, and the sand blocking and water treating platform can be formed by one or more of steel pipe pile driving, bamboo splint supporting and sand stacking bags.
Example 2:
a open trench construction section of a subsidiary inclined shaft of a mine of a certain project;
The construction section sand layer open groove section length of the embodiment is 180m, the open groove section sand layer thickness is 15m, and the water inflow is 80m 3/h.
The construction process comprises the following steps:
Because of the geological characteristics of the construction targets, the conventional centralized dewatering method or construction dewatering well method has the risk of collapse of the sand layer of the large-area open channel section, and cannot meet the construction requirements of the open channel construction section; therefore, the water content of the sand layer in the outer range of the open trench construction section is controlled by adopting the degradation drainage construction method for open trench section construction, the condition that the sand burst and collapse are caused by open trench is avoided, and the open trench construction environment is improved.
By carrying out detailed topographic and geological condition exploration on a construction site, determining the position of a construction section of an open trench, preparation before construction is completed, specifically, before construction, construction technicians need to carefully carry out safety technical delivery to the construction personnel, and the construction technicians need to carry out the specific construction steps shown in the figure 1:
s1, constructing a hierarchical platform structure: the method comprises the steps that a multi-layer hierarchical platform structure which is gradually reduced along the vertical radial direction is built from top to bottom along the excavation direction through an excavation entrance, a slope is connected between the lower edge of the upper layer of platform and the lower edge of the lower layer of platform, and the angle of the slope is less than or equal to 35 degrees.
And the cross section of the hierarchical platform structure is in a trapezoid structure.
Preferably, after the construction of the layered platform structure in step S1 is completed, an operation space 6 is reserved on each layered platform structure, and in this embodiment, the operation space is preferably selected to be 2.5m, and the sand blocking pile 61 is embedded in the operation space 6.
S2, constructing a multi-pipe self-priming pump drainage system: the multi-pipe self-priming pump 21 is arranged layer by layer along the digging direction on the hierarchical platform structure, and it is to be noted that before the multi-pipe self-priming pump 21 is arranged, a sand layer section static water level line should be ascertained and the multi-pipe self-priming pump 21 is ensured to be arranged on the static water level line, so that normal drainage of the multi-pipe self-priming pump 21 is ensured, the multi-pipe self-priming pumps 21 on the same layer form a trapezoid structure, each multi-pipe self-priming pump 21 is connected with a water sucking and draining pipe 23 of a plurality of water-containing sand layers through a pipe separator 22, the water sucking and draining pipe can adopt a porous pipe, the output ends of all the multi-pipe self-priming pumps 21 drain water in the same water draining assembly 25 through a draining pipe 24, and the multi-pipe self-priming pump 21, the pipe separator 22, the water sucking and draining pipe 24 and the water draining assembly 25 form the multi-pipe self-priming pump water draining system 2.
As a further specific scheme of the scheme, in the embodiment, 50-80 multi-pipe self-priming pumps are selected.
It should be noted that, the layers of the hierarchical platform structure are all provided with reserved holes in advance, and preferably, the pile type drilling tool can be used for the hole opening, and the length of the flower hole end of the suction and drainage pipe 23 penetrating into the reserved holes is generally 2-5m.
Preferably, an operation platform 7 is constructed outside the top layer of the hierarchical platform structure, a drain 71 for placing the output end of the drain pipe 24 is excavated on the operation platform 7, and the drain assembly 25 includes a water pump 251 positioned in the drain 71 and a water collecting part 252 connected to the output end of the water pump 251.
S3, pumping water layer by layer: and water is discharged layer by layer along the digging direction through the multi-pipe self-priming pump water discharge system 2.
A water level observation well 5 which is convenient for observing the liquid level height in the water level observation well 5 in real time is arranged on the construction platform 1.
S4, digging downwards layer by layer: and (3) the construction of the open channel section 4 is followed by the step (S3) to sequentially dig downwards layer by layer until the construction of the open channel section 4 is finished.
S5, sand bed bottom plate protection: after the construction of the open groove section 4 is finished, a sand blocking and water treating platform is built on the sand layer bottom plate, and the sand blocking and water treating platform can be formed by one or more of steel pipe pile driving, bamboo splint supporting and sand stacking bags.
Conclusion: it can be seen from the comprehensive examples 1 and 2 that the construction method is adopted in the open trench excavation dewatering construction process, the model of the open trench section after excavation is shown in fig. 4, and as can be seen from fig. 4, the open trench section after excavation is of a stepped structure.
It should be understood that the invention is not limited to the preferred embodiments, but is intended to cover modifications, equivalents, or alternatives falling within the spirit and principles of the invention.
Claims (9)
1. An open channel section construction system adopting a layer-by-layer drainage method, which is characterized by comprising: each construction platform (1) that arranges in proper order along the excavation direction, construction platform (1) are the trapezoidal structure that top is wide at the end is narrow along horizontal radial direction, the arrangement height of each construction platform (1) reduces in order to constitute the hierarchical platform structure of step, and all be arranged multi-pipe self priming pump drainage system (2) that supply open channel section drainage on each construction platform (1), excavate the entry (3) and lie in the narrow edge of construction platform (1) on top layer, form inclined plane structure and constitute open channel section (4) along excavate entry (3) to the target degree of depth, open channel section (4) include a plurality of construction layers (41) the same and follow the sequential construction of vertical direction with hierarchical platform structure quantity, multi-pipe self priming pump drainage system (2) are including a plurality of multi-pipe self priming pumps (21) that the trapezoidal structure was arranged in a layer by layer transversely, a multi-pipe self priming pump (21) are connected with a plurality of multi-pipe drain pipes (23) that go deep into construction platform (1) below water-containing sand layer through being connected to the separator (22), the output of all self priming pump (21) will drain in same drain assembly (25) through drain pipe (24).
2. The open channel segment construction system employing a layer-by-layer drainage method as claimed in claim 1, wherein: the multi-pipe self-priming pump drainage system (2) further comprises a water level observation well (5) which is arranged on the construction platform (1) and is convenient for observing the liquid level height in the water level observation well (5) in real time.
3. The open channel segment construction system employing a layer-by-layer drainage method as claimed in claim 2, wherein: an operation space (6) is reserved on each layer of construction platform (1), and sand blocking piles (61) are arranged on the operation space (6).
4. A open channel segment construction system employing a layer-by-layer drainage method as claimed in claim 3, wherein: an operation platform (7) is constructed outside the construction platform (1) on the top layer, a drainage ditch (71) for placing the output end of the drainage pipe (24) is excavated on the operation platform (7), and the drainage assembly (25) comprises a water pump (251) positioned in the drainage ditch (71) and a water collecting part (252) connected with the output end of the water pump (251).
5. A progressive drainage construction method for open channel segment construction according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
s1, constructing a hierarchical platform structure: constructing a plurality of layers of hierarchical platform structures which are reduced layer by layer along the vertical radial direction from top to bottom along the excavation direction from an excavation inlet, wherein the cross section of the hierarchical platform structure is a trapezoid structure;
s2, constructing a multi-pipe self-priming pump drainage system: a plurality of multi-pipe self-sucking pumps (21) are arranged layer by layer along the digging direction on the hierarchical platform structure, the multi-pipe self-sucking pumps (21) on the same layer form a trapezoid structure, each multi-pipe self-sucking pump (21) is connected with a plurality of water sucking and discharging pipes (23) which are positioned deep into a water-containing sand layer below the hierarchical platform structure through a pipe separator (22), the output ends of all the multi-pipe self-sucking pumps (21) discharge water into the same water discharging assembly (25) through the water discharging pipes (24), and the multi-pipe self-sucking pumps (21), the pipe separator (22), the water sucking and discharging pipes (23), the water discharging pipes (24) and the water discharging assembly (25) form a multi-pipe self-sucking pump water discharging system (2);
s3, pumping water layer by layer: layer-by-layer drainage along the digging direction is performed through a multi-pipe self-priming pump drainage system (2);
s4, digging downwards layer by layer: and (3) the construction of the open channel section (4) is followed by the step (S3) to sequentially dig downwards layer by layer until the construction of the open channel section (4) is finished.
6. The open channel segment construction method adopting the layer-by-layer drainage method according to claim 5, wherein the method comprises the following steps: further comprises:
S5, sand bed bottom plate protection: after the construction of the open groove section (4) is finished, a sand blocking and water treating platform is built on the sand layer bottom plate, and the sand blocking and water treating platform can be formed by one or more of steel pipe pile driving, bamboo splint supporting and sand stacking bags.
7. The open channel construction method according to claim 5 or claim 6, wherein the open channel construction method is a layer-by-layer drainage method, and is characterized in that: after the construction of the layer-level platform structure in the step S1 is completed, an operation space (6) is reserved on each layer-level platform structure, and sand blocking piles (61) are buried in the operation space (6).
8. The open channel construction method according to claim 5 or claim 6, wherein the open channel construction method is a layer-by-layer drainage method, and is characterized in that: in the step S2, an operation platform (7) is arranged on the outer side of the top layer of the hierarchical platform structure, a drainage ditch (71) for placing the output end of the drainage pipe (24) is dug on the operation platform (7), and the drainage assembly (25) comprises a water pump (251) positioned in the drainage ditch (71) and a water collecting part (252) connected with the output end of the water pump (251).
9. The open channel construction method according to claim 5 or claim 6, wherein the open channel construction method is a layer-by-layer drainage method, and is characterized in that: after the step S3 is completed, before the step S4 is performed, a water level observation well (5) which is convenient for observing the liquid level height in the water level observation well (5) in real time is arranged on the construction platform (1).
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012036720A (en) * | 2010-08-04 | 2012-02-23 | Kunmin Composite Infrastructure Inc | Open-cut excavation structure using lining panel, and open-cut excavation construction method |
| CN107938680A (en) * | 2017-11-20 | 2018-04-20 | 重庆交通建设(集团)有限责任公司 | A kind of excavation of foundation pit safe construction method |
| WO2018234836A1 (en) * | 2017-06-19 | 2018-12-27 | Barkasz Sandor | Method for productive diaphragm wall construction without soil excavation, and diaphragm wall construction system |
| CN111577330A (en) * | 2020-05-08 | 2020-08-25 | 平煤神马建工集团有限公司 | Construction method for open channel section of large-section inclined shaft and high-strength combined template thereof |
| CN112112657A (en) * | 2020-09-25 | 2020-12-22 | 中煤第三建设（集团）有限责任公司 | New construction method for digging and building inclined shaft of coal mine |
| CN214887218U (en) * | 2021-04-22 | 2021-11-26 | 中煤第三建设（集团）有限责任公司 | Water-rich sand layer inclined shaft TBM stepping open trough section dewatering device |
-
2021
- 2021-12-30 CN CN202111650993.3A patent/CN114233384B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012036720A (en) * | 2010-08-04 | 2012-02-23 | Kunmin Composite Infrastructure Inc | Open-cut excavation structure using lining panel, and open-cut excavation construction method |
| WO2018234836A1 (en) * | 2017-06-19 | 2018-12-27 | Barkasz Sandor | Method for productive diaphragm wall construction without soil excavation, and diaphragm wall construction system |
| CN107938680A (en) * | 2017-11-20 | 2018-04-20 | 重庆交通建设(集团)有限责任公司 | A kind of excavation of foundation pit safe construction method |
| CN111577330A (en) * | 2020-05-08 | 2020-08-25 | 平煤神马建工集团有限公司 | Construction method for open channel section of large-section inclined shaft and high-strength combined template thereof |
| CN112112657A (en) * | 2020-09-25 | 2020-12-22 | 中煤第三建设（集团）有限责任公司 | New construction method for digging and building inclined shaft of coal mine |
| CN214887218U (en) * | 2021-04-22 | 2021-11-26 | 中煤第三建设（集团）有限责任公司 | Water-rich sand layer inclined shaft TBM stepping open trough section dewatering device |
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