CN114961842A - Construction method for backfilling underground old civil air defense roadway - Google Patents
Construction method for backfilling underground old civil air defense roadway Download PDFInfo
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- 230000007123 defense Effects 0.000 title claims abstract description 105
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000000926 separation method Methods 0.000 claims abstract description 47
- 239000004567 concrete Substances 0.000 claims abstract description 40
- 238000005553 drilling Methods 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000005187 foaming Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 2
- 239000011381 foam concrete Substances 0.000 abstract description 6
- 239000004575 stone Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000004534 cecum Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000010959 steel Substances 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
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
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Abstract
The invention relates to the technical field of roadway backfilling, in particular to a construction method for backfilling an underground old civil air defense roadway, which comprises the steps of respectively drilling separation holes at two ends of the ground of the civil air defense roadway to be backfilled, inserting a first pipeline into the separation holes, injecting C15 plastic quick-drying broken stone concrete into the civil air defense roadway to be backfilled through the first pipeline to form separation layers, drilling at least two observation holes on the ground of the civil air defense roadway to be backfilled between the separation layers, inserting a second pipeline into the observation holes, injecting foamed concrete with the dry density level of 340-380kg/m3 into the civil air defense roadway to be backfilled through the second pipeline, placing an endoscope into the other adjacent second pipeline to observe the backfilling condition in the civil air defense roadway to be backfilled, taking out the endoscope from the second pipeline if no special condition exists, and backfilling the endoscope is required, the method is convenient to construct, free of potential safety hazard, low in required cost, compact in backfill effect and beneficial to environment protection.
Description
Technical Field
The invention relates to the technical field of roadway backfill, in particular to a construction method for backfilling an underground old civil air defense roadway.
Background
From the beginning of the 20 th century, underground civil air defense works played an extremely important role in the civil air defense industry of China. However, nowadays, the aging of underground civil air defense works not only makes the civil air defense function lost, but also restricts the expansion, upgrading and reconstruction of cities. With the rapid promotion of urbanization in China and the requirement of city expansion and upgrading, the backfilling of old underground civil air defense works is not slow at all.
In order to solve the technical problems, Chinese patent documents (publication date: 10/07/2020, publication number: CN111396121A) disclose that the old civil air defence works in the underground need to backfill the sections to be sloping and excavated at equal intervals, the lining on the top of the tunnel is broken, then sand bags are put into the tunnel to pile up the walls, water flows on two sides are blocked to form one or more isolation sections, and concrete guniting injection is adopted to backfill each isolation section; whole work progress only needs local excavation, can backfill the old civil air defense worker of underground fast, greatly shortens construction period, does not cause too big load to the environment in addition, is favorable to environmental protection to effectively solve inside and be full of how to block inside rivers when the old civil air defense worker of underground of ponding backfills the excavation, and cause landslide, traffic puzzlement and influence the problem of its peripheral building stability easily.
However, this solution has the following problems: 1. the risk of the personnel staying in the tunnel for a long time is high, and great potential safety hazards exist; 2. the coarse sand cost in backfilling is too high; 3. the construction benefit is slow; 4. the backfill is not compact, and a 'cecum' exists.
Chinese patent literature (Anhui date: 10.07.2020, Anhui No. CN111396084A) discloses that the backfill of old underground civil air defence works is carried out by placing slopes and excavating on sections which need to be backfilled at equal intervals, breaking the lining at the top of the tunnel, then throwing sand bags into the tunnel, piling the walls, blocking water flows at two sides to form one or more isolation sections, and backfilling each isolation section by adopting a concrete guniting injection mode; whole work progress only needs local excavation, can backfill the old man-made air defense worker in underground fast, greatly shortens construction period, does not cause too big load to the environment moreover, is favorable to environmental protection to effectively solve inside and be full of how to block inside rivers when the old man-made air defense worker in underground of ponding backfills the excavation, and cause the problem of landslide, traffic puzzlement and influence its peripheral building stability easily.
However, this solution has the following problems: 1. the larsen steel sheet pile driving cost is high, some places are limited, and equipment and machinery cannot enter; 2. the backfilling and separation of the part of excavated sandbags are difficult to realize, and the buried depth of early civil air defense is large under the general condition, so that open excavation is difficult to realize.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide the construction method for backfilling the underground old civil air defense roadway, which has the advantages of simple backfilling method, convenience in construction, no potential safety hazard, low required cost, compact backfilling effect and contribution to environmental protection.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a construction method for backfilling underground old civil air defense roadways comprises the following steps:
s1, exploring the technical parameters of the position, depth, length, width and height of the civil air defense roadway to be backfilled through a detector, determining whether accumulated water exists in the civil air defense roadway, and lofting the position coordinates of the civil air defense roadway to be backfilled to the ground;
s2, drilling a plurality of observation holes on the ground corresponding to the civil air defense roadway to be backfilled through a drilling machine;
s3, after the observation holes are formed, extending a periscope into the observation holes to observe the specific situation in the civil air defense roadway to be backfilled and the detailed situation of accumulated water in the civil air defense roadway to be backfilled, and if accumulated water exists in the civil air defense roadway to be backfilled, pumping and draining the accumulated water to prevent the accumulated water from influencing the backfilling quality;
after the steps of S4 and S3 are finished, respectively drilling separation holes at two ends of the plurality of observation holes on the ground corresponding to the civil air defense roadway to be backfilled through a drilling machine, and inserting first pipelines for preventing collapse and blockage into the separation holes;
s5, injecting concrete A into the roadway needing to be backfilled through the first pipeline from the separation holes respectively to form separation layers, and after the separation layers are formed, pulling out the first pipeline from the separation holes;
and S6, respectively inserting second pipelines into the observation holes, injecting the concrete B into the civil air defense roadway to be backfilled from the observation holes through the second pipelines, and observing the backfilling condition in the civil air defense roadway to be backfilled in the adjacent observation holes through an endoscope during injection until the civil air defense roadway to be backfilled is fully backfilled.
Further, the concrete A is C15 plastic quick-drying broken stone concrete with slump in the range of 30-80 mm.
Further, the dry density grade of the concrete B is in the range of 340-380kg/m 3 Foaming concrete;
further, the number of the plurality of observation holes is at least two.
Further, the diameter of each observation hole is in the range of 100-200 mm.
Furthermore, the outer side wall of the second pipeline is respectively in tangent fit with the inner side walls of the plurality of observation holes.
Further, the diameter of the separation hole is 200-300 mm.
Further, the outer side wall of the first pipeline is respectively in tangent fit with the inner side wall of the separation hole.
In conclusion, the invention has the advantages that:
a construction method for backfilling the underground civil air defense tunnel includes such steps as drilling the isolating holes at both ends of the tunnel to be backfilled, inserting the first pipeline in said isolating holes, filling the C15 plastic quick-drying broken stone concrete in the tunnel to be backfilled to form isolating layers, drilling at least two observation holes on the ground, inserting the second pipeline in said observation holes, and choosing the second pipeline to obtain the tunnel with dry density in the range of 380kg/m 3 The foamed concrete is injected into the roadway needing to be backfilled through a second pipeline, and an endoscope is placed into another adjacent second pipelineAnd observing the backfill condition in the civil air defense roadway needing to be backfilled, if no special condition exists, taking out the endoscope from the second pipeline, and filling the endoscope with the backfill.
Drawings
FIG. 1 is a schematic cross-sectional view of an old civil air defense roadway during backfilling in accordance with an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an old civil air defense roadway after backfilling in accordance with an embodiment of the present invention;
the system comprises a ground 100, a ground 200, a civil air defense roadway to be backfilled 300, a separation hole 400, a first pipeline 500, an observation hole 600, a second pipeline 700, an endoscope 800, concrete B900 and concrete A.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the detailed description:
the first embodiment is as follows:
as shown in fig. 1 and 2, a construction method for backfilling underground old civil air defense roadways comprises the following steps:
s1, exploring technical parameters of the position, depth, length, width and height of the civil air defense roadway to be backfilled through a detector, determining whether accumulated water exists in the civil air defense roadway, and lofting the position coordinates of the civil air defense roadway to be backfilled to the ground;
s2, drilling a plurality of observation holes 500 on the ground 100 corresponding to the civil air defense roadway to be backfilled through a drilling machine;
s3, after the observation holes 500 are formed, the periscope is stretched into the observation holes to observe the specific situation in the civil air defense tunnel 200 to be backfilled and the detailed situation of accumulated water in the civil air defense tunnel 200 to be backfilled, if the accumulated water exists in the civil air defense tunnel 200 to be backfilled, the accumulated water needs to be pumped and drained, and the influence of the accumulated water on the backfilling quality is prevented;
after the steps S4 and S3 are completed, the partition holes 300 are drilled at the two ends of the plurality of observation holes 500 respectively through the drilling machine and the ground 100 corresponding to the civil air defense roadway to be backfilled, and the first pipeline 400 for preventing collapse and blockage is inserted into the partition holes 300;
s5, injecting concrete A900 into the civil air defense roadway 200 to be backfilled through the first pipeline 400 from the separation holes 300 respectively to form separation layers, and pulling out the first pipeline 400 from the separation holes 300 after the separation layers are formed;
and S6, respectively inserting a second pipeline 600 into the observation holes 500, then injecting the concrete B800 into the civil air defense roadway 200 to be backfilled from the observation holes 500 through the second pipeline 600, and observing the backfilling condition in the civil air defense roadway 200 to be backfilled in the adjacent observation holes 500 through the endoscope 700 during injection until the civil air defense roadway is fully backfilled.
Wherein the concrete A900 is C15 plastic quick-drying broken stone concrete with slump in the range of 30 mm. By using this type of concrete as the separation layer, the cost can be reduced as a whole.
The detector is an underground cavity detector, the exploration data of the detector is accurate, and the detector is simple and convenient to use.
Wherein the dry density grade range of the concrete B800 is 340kg/m 3 Foaming concrete; by adopting the foamed concrete, the flowability is good, the blockage of the observation hole 500 and the second pipeline 600 cannot be caused, and the backfilling civil air defense roadway 200 can be conveniently and compactly filled.
Wherein, the number of the plurality of observation holes 500 is at least two.
Wherein, the diameter size range of each observation hole 500 is 100 mm.
The outer side wall of the second pipeline 600 is respectively attached to the inner side walls of the plurality of observation holes 500 in a tangent mode.
Wherein the diameter of the separation hole 300 is 200 mm.
Wherein, the outer side wall of the first pipe 400 is respectively attached to the inner side wall of the separation hole 300 in a tangent manner.
Example two:
as shown in fig. 1 and 2, a construction method for backfilling underground old civil air defense roadways comprises the following steps:
s1, exploring technical parameters of the position, depth, length, width and height of the civil air defense roadway to be backfilled through a detector, determining whether accumulated water exists in the civil air defense roadway, and lofting the position coordinates of the civil air defense roadway to be backfilled to the ground;
s2, drilling a plurality of observation holes 500 on the ground 100 corresponding to the civil air defense roadway to be backfilled through a drilling machine;
s3, after the observation holes 500 are formed, the periscope is stretched into the observation holes to observe the specific situation in the civil air defense tunnel 200 to be backfilled and the detailed situation of accumulated water in the civil air defense tunnel 200 to be backfilled, if the accumulated water exists in the civil air defense tunnel 200 to be backfilled, the accumulated water needs to be pumped and drained, and the influence of the accumulated water on the backfilling quality is prevented;
after the steps S4 and S3 are completed, the partition holes 300 are drilled at the two ends of the plurality of observation holes 500 respectively through the drilling machine and the ground 100 corresponding to the civil air defense roadway to be backfilled, and the first pipeline 400 for preventing collapse and blockage is inserted into the partition holes 300;
s5, injecting concrete A900 into the civil air defense roadway 200 to be backfilled through the first pipeline 400 from the separation holes 300 respectively to form separation layers, and pulling out the first pipeline 400 from the separation holes 300 after the separation layers are formed;
and S6, respectively inserting a second pipeline 600 into the observation holes 500, then injecting the concrete B800 into the civil air defense roadway 200 to be backfilled from the observation holes 500 through the second pipeline 600, and observing the backfilling condition in the civil air defense roadway 200 to be backfilled in the adjacent observation holes 500 through the endoscope 700 during injection until the civil air defense roadway is fully backfilled.
Wherein the concrete A900 is C15 plastic quick-drying broken stone concrete with slump in the range of 50 mm. By using this type of concrete as the separation layer, the overall cost can be reduced.
The detector is an underground cavity detector, the exploration data of the detector is accurate, and the detector is simple and convenient to use.
Wherein the dry density grade range of the concrete B800 is 360kg/m 3 Foaming concrete; by adopting the foamed concrete, the flowability is good, the blockage of the observation hole 500 and the second pipeline 600 cannot be caused, and the backfilling civil air defense roadway 200 can be conveniently and compactly filled.
Wherein, the number of the plurality of observation holes 500 is at least two.
Wherein, the diameter size range of each observation hole 500 is 150 mm.
The outer side wall of the second pipeline 600 is respectively attached to the inner side walls of the plurality of observation holes 500 in a tangent mode.
Wherein the diameter of the separation hole 300 is in the range of 250 mm.
Wherein, the outer side wall of the first pipe 400 is respectively attached to the inner side wall of the separation hole 300 in a tangent manner.
Example three:
as shown in fig. 1 and 2, a construction method for backfilling underground old civil air defense roadways comprises the following steps:
s1, exploring technical parameters of the position, depth, length, width and height of the civil air defense roadway to be backfilled through a detector, determining whether accumulated water exists in the civil air defense roadway, and lofting the position coordinates of the civil air defense roadway to be backfilled to the ground;
s2, drilling a plurality of observation holes 500 on the ground 100 corresponding to the civil air defense roadway to be backfilled through a drilling machine;
s3, after the observation holes 500 are formed, the periscope is stretched into the observation holes to observe the specific situation in the civil air defense tunnel 200 to be backfilled and the detailed situation of accumulated water in the civil air defense tunnel 200 to be backfilled, if the accumulated water exists in the civil air defense tunnel 200 to be backfilled, the accumulated water needs to be pumped and drained, and the influence of the accumulated water on the backfilling quality is prevented;
after the steps S4 and S3 are completed, the partition holes 300 are drilled at the two ends of the plurality of observation holes 500 respectively through the drilling machine and the ground 100 corresponding to the civil air defense roadway to be backfilled, and the first pipeline 400 for preventing collapse and blockage is inserted into the partition holes 300;
s5, injecting concrete A900 into the civil air defense roadway 200 to be backfilled through the first pipeline 400 from the separation holes 300 respectively to form separation layers, and pulling out the first pipeline 400 from the separation holes 300 after the separation layers are formed;
and S6, respectively inserting a second pipeline 600 into the observation holes 500, then injecting the concrete B800 into the civil air defense roadway 200 to be backfilled from the observation holes 500 through the second pipeline 600, and observing the backfilling condition in the civil air defense roadway 200 to be backfilled in the adjacent observation holes 500 through the endoscope 700 during injection until the civil air defense roadway is fully backfilled.
Wherein the concrete A900 is C15 plastic quick-drying broken stone concrete with slump in the range of 80 mm. By using this type of concrete as the separation layer, the overall cost can be reduced.
The detector is an underground cavity detector, the exploration data of the detector is accurate, and the detector is simple and convenient to use.
Wherein the dry density grade range of the concrete B800 is 380kg/m 3 Foaming concrete; by adopting the foamed concrete, the flowability is good, the blockage of the observation hole 500 and the second pipeline 600 cannot be caused, and the backfilling civil air defense roadway 200 can be conveniently and compactly filled.
Wherein, the number of the plurality of observation holes 500 is at least two.
Wherein, the diameter size range of each observation hole 500 is 200 mm.
The outer side wall of the second pipeline 600 is respectively attached to the inner side walls of the plurality of observation holes 500 in a tangent mode.
Wherein, the diameter size range of the separation hole 300 is 300 mm.
Wherein, the outer side wall of the first pipe 400 is respectively attached to the inner side wall of the separation hole 300 in a tangent manner.
In summary, the invention comprises drilling separation holes at two ends of the ground to be backfilled with the civil air defense tunnel, inserting the first pipeline into the separation holes, injecting C15 plastic quick-drying gravel concrete into the civil air defense tunnel to be backfilled through the first pipeline to form separation layers, drilling at least two observation holes on the ground to be backfilled with the civil air defense tunnel between the separation layers, inserting the second pipeline into the observation holes, and selecting the second pipeline to obtain the final product with the dry density level range of 340- 3 The foamed concrete is injected into the civil air defense roadway needing to be backfilled through the second pipeline, the endoscope is placed into the other adjacent second pipeline to observe the backfilling condition in the civil air defense roadway needing to be backfilled, if no special condition exists, the endoscope can be taken out of the second pipeline, and the civil air defense roadway needing to be backfilled is full of backfill.
Various other changes and modifications to the above embodiments and concepts will become apparent to those skilled in the art, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (8)
1. A construction method for backfilling underground old civil air defense roadways is characterized by comprising the following steps:
s1, exploring the technical parameters of the position, depth, length, width and height of the civil air defense roadway to be backfilled through a detector, determining whether accumulated water exists in the civil air defense roadway, and lofting the position coordinates of the civil air defense roadway to be backfilled to the ground;
s2, drilling a plurality of observation holes on the ground corresponding to the civil air defense roadway to be backfilled through a drilling machine;
s3, after the observation holes are formed, extending a periscope into the observation holes to observe the specific situation in the civil air defense roadway to be backfilled and the detailed situation of accumulated water in the civil air defense roadway to be backfilled, and if accumulated water exists in the civil air defense roadway to be backfilled, pumping and draining the accumulated water to prevent the accumulated water from influencing the backfilling quality;
after the steps of S4 and S3 are finished, respectively drilling separation holes at two ends of the plurality of observation holes on the ground corresponding to the civil air defense roadway to be backfilled through a drilling machine, and inserting first pipelines for preventing collapse and blockage into the separation holes;
s5, injecting the concrete A into the roadway needing to be backfilled with civil air defense through the first pipeline from the separation holes respectively to form separation layers, and pulling out the first pipeline from the separation holes after the separation layers are formed;
and S6, respectively inserting second pipelines into the observation holes, injecting the concrete B into the civil air defense roadway to be backfilled from the observation holes through the second pipelines, and observing the backfilling condition in the civil air defense roadway to be backfilled in the adjacent observation holes through an endoscope during injection until the civil air defense roadway to be backfilled is fully backfilled.
2. The construction method for backfilling underground old people's air defense tunnels according to claim 1, wherein the concrete A is C15 plastic quick-drying gravel concrete with slump in the range of 30-80 mm.
3. The construction method for backfilling underground old people's air defense laneway according to claim 1, wherein the dry density of the concrete B is within the range of 340-380kg/m 3 And (3) foaming concrete.
4. The construction method for backfilling an underground old people air defense roadway according to claim 1, wherein the number of the observation holes is at least two.
5. The construction method for backfilling underground old civil air defense tunnels according to claim 4, wherein the diameter of each observation hole is within the range of 100-200 mm.
6. The construction method for backfilling an underground old civil air defense roadway according to claim 5, wherein the outer side wall of the second pipeline is respectively and tangentially attached to the inner side walls of the observation holes.
7. The construction method for backfilling an underground old civil air defense roadway according to claim 1, wherein the diameter of the separation hole is in the range of 200-300 mm.
8. The construction method for backfilling an underground old civil air defense roadway according to claim 7, wherein the outer side walls of the first pipelines are respectively and tangentially attached to the inner side walls of the separation holes.
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| JP2002081054A (en) * | 2000-09-08 | 2002-03-22 | Chubu Regional Bureau Ministry Of Land Infrastructure & Transport | Filling method for underground cavity |
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| CN111396084A (en) * | 2020-02-26 | 2020-07-10 | 广州市第四建筑工程有限公司 | Underground old civil air defense construction method with accumulated water inside |
| CN112323823A (en) * | 2020-07-21 | 2021-02-05 | 中冶集团武汉勘察研究院有限公司 | Filling device and method for waste air-raid shelter of pile foundation construction site |
| CN113216148A (en) * | 2021-05-13 | 2021-08-06 | 中建市政工程有限公司 | Construction method for pile foundation of pressure-bearing underground air-raid shelter collapse section |
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2021
- 2021-12-28 CN CN202111629419.XA patent/CN114961842A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002081054A (en) * | 2000-09-08 | 2002-03-22 | Chubu Regional Bureau Ministry Of Land Infrastructure & Transport | Filling method for underground cavity |
| JP2009299361A (en) * | 2008-06-13 | 2009-12-24 | Eesukon Kogyo Kk | Underground cavity filling method |
| CN104099943A (en) * | 2014-06-30 | 2014-10-15 | 中铁四局集团第四工程有限公司 | Underground diaphragm wall and deserted underground civil air defense engineering intersection processing method |
| CN108316346A (en) * | 2018-03-07 | 2018-07-24 | 宁波工程学院 | A kind of green processing method in discarded underground people's air defense hole |
| CN111396084A (en) * | 2020-02-26 | 2020-07-10 | 广州市第四建筑工程有限公司 | Underground old civil air defense construction method with accumulated water inside |
| CN112323823A (en) * | 2020-07-21 | 2021-02-05 | 中冶集团武汉勘察研究院有限公司 | Filling device and method for waste air-raid shelter of pile foundation construction site |
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