CN111396084A - Underground old civil air defense construction method with accumulated water inside - Google Patents
Underground old civil air defense construction method with accumulated water inside Download PDFInfo
- Publication number
- CN111396084A CN111396084A CN202010120482.XA CN202010120482A CN111396084A CN 111396084 A CN111396084 A CN 111396084A CN 202010120482 A CN202010120482 A CN 202010120482A CN 111396084 A CN111396084 A CN 111396084A
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- underground
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- air defense
- construction method
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 230000007123 defense Effects 0.000 title claims abstract description 44
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 238000002955 isolation Methods 0.000 claims abstract description 29
- 239000004576 sand Substances 0.000 claims abstract description 20
- 239000004567 concrete Substances 0.000 claims abstract description 16
- 238000009412 basement excavation Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000011381 foam concrete Substances 0.000 claims description 4
- 239000011449 brick Substances 0.000 claims description 3
- 238000009933 burial Methods 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 claims 5
- 238000005086 pumping Methods 0.000 abstract description 2
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a backfill construction method for underground old civil air defence works with accumulated water inside, which comprises the following steps: finding out technical parameters of underground old and old civil air defense works through underground exploration and lofting the positions of the technical parameters to the ground; slope placing and excavating are carried out on sections, which need to be backfilled, of the old underground civil air defense works at equal intervals, the top lining of a tunnel is broken, then sand bags are put into the tunnel to pile up a wall, water flows on two sides are blocked, and one or a plurality of isolation sections are formed; pumping accumulated water in the isolation section by using a water pump at the lining position at the top of the broken tunnel; a plurality of grouting holes communicated with the isolation sections are formed in the ground corresponding to each isolation section; injecting concrete into the isolation section through each grouting hole at the same time until the concrete is filled up and compacted; and (5) backfilling the slope excavation area to complete the construction of the whole backfilling section. By adopting the invention, only local excavation is needed, and the problems of how to block internal water flow, easy collapse and traffic disturbance and influence on the stability of surrounding buildings when backfilling excavation is carried out can be effectively solved.
Description
Technical Field
The invention belongs to the field of underground old civil air defense construction, and particularly relates to an underground old civil air defense construction method with accumulated water inside.
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. Due to the complexity of underground rock soil, the aging strength of underground old civil air defense works, busy ground traffic and dense surrounding buildings, particularly during construction in the flood season, accumulated water is filled in the underground old civil air defense works, and how to block internal water flow and easily cause landslide when the underground old civil air defense works filled with the accumulated water are backfilled and excavated, the traffic trouble caused by the landslide problem and the stability of the surrounding buildings are affected, so that great difficulty is caused to the backfilling construction of the underground old civil air defense works.
Disclosure of Invention
The invention aims to solve the problem that how to block internal water flow, collapse and traffic disturbance are easily caused and the stability of surrounding buildings is influenced when underground old civil air-defense workers filled with accumulated water are backfilled and excavated can be effectively solved only by locally excavating.
In order to solve the technical problem, the invention provides an underground old civil air defense artificial backfill construction method with accumulated water inside, which comprises the following steps:
s1, finding out technical parameters of position, length, width, height and burial depth of the old underground civil air defense works through underground exploration; wherein, accumulated water exists inside the underground old civil air defense works;
s2, lofting the position of the old underground civil air defense worker to the ground;
s3, slope-placing and excavating on sections, which need to be backfilled, of the old underground civil air defense works at equal intervals, breaking the lining on the top of the tunnel, then putting sand bags into the tunnel, piling the sand bags into walls, and blocking water flows on two sides to form one or more isolation sections;
s4, removing accumulated water in the isolation section at the lining position at the top of the broken tunnel by using a water pump;
s5, after the accumulated water in the isolation sections is drained, a plurality of grouting holes which are arranged at equal intervals and communicated with the isolation sections are formed in the ground corresponding to each isolation section;
s6, simultaneously injecting concrete into the isolation section through each grouting hole until the concrete is filled up and compacted;
and S7, backfilling the slope-digging excavation area to complete the construction of the whole backfilling section.
In a preferred embodiment of the present invention, in step S1, the underground exploration is performed by a geological radar method.
As a preferable embodiment of the present invention, in step S1, the old underground civil air defense structure is a brick masonry structure or a reinforced concrete structure.
In a preferred embodiment of the present invention, in step S2, the lofting is performed by using a total station lofting apparatus.
In a preferred embodiment of the present invention, in step S3, the position of the opening of the broken tunnel top lining is higher than the water level of the accumulated water in the tunnel.
In a preferred embodiment of the present invention, in step S3, the stacking height of the sand pack is greater than the water level of accumulated water in the excavation.
As a preferable aspect of the present invention, in step S3, the sand bags are flood prevention sand bags of a size of 30cm × 70cm, and the number of the vertical stacking rows of the sand bags is not less than 3.
As a preferable embodiment of the present invention, in the step S3, the distance between the top linings of the two adjacent excavated tunnels is less than or equal to 15 m.
In a preferred embodiment of the present invention, in step S5, the distance between two adjacent grouting holes is 3m to 5 m.
In a preferred embodiment of the present invention, in the step S6, the concrete is used in a dry density grade of 500kg/m3The foam concrete.
Compared with the prior art, the underground old civil air defense construction method for accumulating water inside has the following beneficial effects:
the construction method comprises the steps of placing slopes and excavating on sections, needing to be backfilled, of the old and underground civil air-defense works at equal intervals, breaking the lining on the top of a tunnel, then putting sand bags into the tunnel, piling the sand bags into a wall, blocking water flows on 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.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic longitudinal section view of the backfill construction method for underground old civil air defence with accumulated water inside.
The labels in the figure are: 1. the method comprises the following steps of (1) lining the top of a broken tunnel, wherein the ground comprises 2 a grouting hole, 3 a civil air defense, 4 a ponding hole, 5 a foundation, 6 a sand bag and 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
In addition, in the description of the present invention, the terms "front" and "rear" refer to: when the underground old civil air defense construction method with accumulated water inside is in a use state, one surface close to a user is front, and the other surface far away from the user is back.
As shown in fig. 1, a preferable embodiment of the present invention is a backfill construction method for underground old people's air defense with water accumulated inside, which includes the following steps:
s1, finding out technical parameters of position, length, width, height and burial depth of the old underground civil air defense works through underground exploration; in this embodiment, the underground old civil air defense works 3 are brick masonry structures or reinforced concrete structures, and accumulated water 4 exists in the underground old civil air defense works; the underground exploration adopts a geological radar method, and an instrument adopted by the geological radar method is an SIR-20 geological radar.
S2, lofting the position of the old underground civil air defense worker 3 to the ground 1; in this embodiment, the lofting is performed by using a total station instrument.
S3, placing slopes and excavating on sections, needing to be refilled, of the old underground civil air defense construction works 3 at equal intervals, breaking the top linings 7 of the tunnels, then putting sand bags 6 into the tunnels, piling the sand bags into walls, and blocking water flows on two sides to form one or a plurality of isolation sections.
And S4, pumping accumulated water 4 in the isolated section by using a large water pump at the position of a lining 7 on the top of the broken tunnel.
S5, after the accumulated water 4 in the isolation sections is drained, a plurality of grouting holes 2 which are arranged at equal intervals and communicated with the isolation sections are formed in the ground 11 corresponding to each isolation section; in this embodiment, the diameter of the grouting hole 2 is 300 mm; the distance between two adjacent grouting holes 2 is 3-5 m, so that concrete can be conveniently and uniformly injected into the isolation section.
And S6, simultaneously injecting concrete into the isolation section through each grouting hole 2 until the concrete is filled up and compacted. In this embodiment, each grouting hole 22 on one isolation section must be simultaneously injected with grouting until the concrete is filled up, and then the next isolation section is injected with grouting; the dry density grade of the concrete is 500kg/m3The foam concrete has the following technical parameters of the mixing ratio of each cube of the concrete: 105kg of fly ash, 312kg of common cement, 208.5kg of water and 1.16kg of foaming agent. It should be noted that the foam concrete has better fluidity and can better return to 360 degrees without dead anglesThe filling is compact, and the strength is enough, which is beneficial to the stability of the foundation.
And S7, backfilling the slope-digging excavation area to complete the construction of the whole backfilling section.
In conclusion, according to the construction method for backfilling underground old civil air defence works with accumulated water inside, slope excavation is carried out on sections, needing to be backfilled, of the underground old civil air defence works at equal intervals, lining on the top of a tunnel is broken, then sand bags are put into the tunnel, the tunnel is piled into a wall, water flows on two sides are blocked, one or a plurality of isolation sections are formed, and each isolation section is backfilled in 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.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. The backfill construction method for underground old civil air defense works with accumulated water inside is characterized by comprising the following steps:
s1, finding out technical parameters of position, length, width, height and burial depth of the old underground civil air defense works through underground exploration; wherein, accumulated water exists inside the underground old civil air defense works;
s2, lofting the position of the old underground civil air defense worker to the ground;
s3, slope-placing and excavating on sections, which need to be backfilled, of the old underground civil air defense works at equal intervals, breaking the lining on the top of the tunnel, then putting sand bags into the tunnel, piling the sand bags into walls, and blocking water flows on two sides to form one or more isolation sections;
s4, removing accumulated water in the isolation section at the lining position at the top of the broken tunnel by using a water pump;
s5, after the accumulated water in the isolation sections is drained, a plurality of grouting holes which are arranged at equal intervals and communicated with the isolation sections are formed in the ground corresponding to each isolation section;
s6, simultaneously injecting concrete into the isolation section through each grouting hole until the concrete is filled up and compacted;
and S7, backfilling the slope-digging excavation area to complete the construction of the whole backfilling section.
2. The method of backfill construction of underground old civil air defence with internal accumulation according to claim 1, characterized in that in step S1, the underground exploration uses the geological radar method.
3. The underground old civil air defense construction method of the internal ponding of claim 1, wherein in the step S1, the underground old civil air defense is a brick masonry structure or a reinforced concrete structure.
4. The underground old civil air defense construction method for internal water accumulation of claim 1, wherein in the step S2, the lofting is performed by using a total station lofting device.
5. The underground old civil air-defense construction method of internal water accumulation as claimed in claim 1, wherein in the step S3, the opening of the broken tunnel top lining is positioned higher than the water level of the water accumulation in the tunnel.
6. The underground old civil air-defense construction method for accumulating water inside according to claim 1, wherein in the step S3, the stacking height of the sand bag is larger than the water level of the accumulated water in the tunnel.
7. The underground old civil air defense construction method for accumulating water inside the sand bag according to claim 1, wherein in the step S3, the sand bag is a flood prevention sand bag with the specification of 30cm × 70cm, and the number of longitudinal stacking rows of the sand bag is not less than 3.
8. The underground old civil air-defense construction method of internal water accumulation as claimed in claim 1, wherein the distance between the top linings of two adjacent excavated tunnels is less than or equal to 15m in the step S3.
9. The underground old civil air-defense construction method for accumulating water inside according to claim 1, wherein in the step S5, the distance between two adjacent grouting holes is 3m to 5 m.
10. The underground old civil air defense construction method for accumulating water inside according to claim 1, wherein in the step S6, the concrete is used with a dry density grade of 500kg/m3The foam concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010120482.XA CN111396084A (en) | 2020-02-26 | 2020-02-26 | Underground old civil air defense construction method with accumulated water inside |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010120482.XA CN111396084A (en) | 2020-02-26 | 2020-02-26 | Underground old civil air defense construction method with accumulated water inside |
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| CN111396084A true CN111396084A (en) | 2020-07-10 |
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| CN202010120482.XA Pending CN111396084A (en) | 2020-02-26 | 2020-02-26 | Underground old civil air defense construction method with accumulated water inside |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431055A (en) * | 2021-05-27 | 2021-09-24 | 同济大学 | Light foam concrete backfilling method for urban abandoned underground space in soft soil area |
| CN114961842A (en) * | 2021-12-28 | 2022-08-30 | 江西正越建设工程有限公司 | Construction method for backfilling underground old civil air defense roadway |
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| 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 |
| CN104196034A (en) * | 2014-09-18 | 2014-12-10 | 中建交通建设集团有限公司 | Foundation pit construction method employing steel sheet piles as support cofferdam |
| CN107152035A (en) * | 2017-06-06 | 2017-09-12 | 中国华冶科工集团有限公司 | The construction method of underground pipe gallery river crossing |
| 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 |
| CN110512594A (en) * | 2019-08-20 | 2019-11-29 | 北京建材地质工程有限公司 | The simple and easy method of churning driven opportunity cavity pore-forming |
-
2020
- 2020-02-26 CN CN202010120482.XA patent/CN111396084A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104196034A (en) * | 2014-09-18 | 2014-12-10 | 中建交通建设集团有限公司 | Foundation pit construction method employing steel sheet piles as support cofferdam |
| CN107152035A (en) * | 2017-06-06 | 2017-09-12 | 中国华冶科工集团有限公司 | The construction method of underground pipe gallery river crossing |
| 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 |
| CN110512594A (en) * | 2019-08-20 | 2019-11-29 | 北京建材地质工程有限公司 | The simple and easy method of churning driven opportunity cavity pore-forming |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431055A (en) * | 2021-05-27 | 2021-09-24 | 同济大学 | Light foam concrete backfilling method for urban abandoned underground space in soft soil area |
| CN114961842A (en) * | 2021-12-28 | 2022-08-30 | 江西正越建设工程有限公司 | Construction method for backfilling underground old civil air defense roadway |
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Application publication date: 20200710 |