CN109184733B - Soft rock chamber bottom heave treatment supporting structure and method based on prefabricated bottom arc plate - Google Patents
Soft rock chamber bottom heave treatment supporting structure and method based on prefabricated bottom arc plate Download PDFInfo
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- CN109184733B CN109184733B CN201810957123.2A CN201810957123A CN109184733B CN 109184733 B CN109184733 B CN 109184733B CN 201810957123 A CN201810957123 A CN 201810957123A CN 109184733 B CN109184733 B CN 109184733B
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- 239000011435 rock Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 8
- 238000004873 anchoring Methods 0.000 claims abstract description 4
- 239000004567 concrete Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 208000024891 symptom Diseases 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- 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
- E21D11/006—Lining anchored in the rock
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- 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
- E21D11/08—Lining with building materials with preformed concrete slabs
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- 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
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
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- 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
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- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention relates to a soft rock chamber bottom heave treatment supporting structure and method of a prefabricated assembly type bottom arc plate, and the supporting structure comprises a steel support, the prefabricated assembly type bottom arc plate, an anchor rope and a bottom plate waterproof layer, wherein a plurality of prefabricated assembly type bottom arc plates are assembled to form a reinforced bottom plate, the steel support is supported or inserted into two end parts of the prefabricated assembly type bottom arc plate, the end parts are just matched with the steel support after special treatment, the anchor rope penetrates through the prefabricated assembly type bottom arc plate and is anchored in surrounding rocks, the anchoring end of the anchor rope exceeds the zero displacement marking depth of the bottom plate, the zero displacement marking depth is determined by field monitoring and theoretical analysis, and the bottom plate waterproof layer is paved on the inner side of the prefabricated assembly type bottom arc plate. The supporting structure adopts a special reinforced supporting technology of the high-bearing-capacity support and the base plate, is simple in construction and economical in cost, not only strengthens the supporting force of the base plate, inhibits the deformation of the base plate, but also optimizes the overall supporting of a roadway, can effectively solve the problem of the bottom bulging of the chamber and reduce the repair rate of the chamber.
Description
Technical Field
The invention belongs to the field of underground engineering support, and particularly relates to a soft rock chamber bottom heave treatment support structure and method based on a prefabricated bottom arc plate.
Background
At present, most coal mines in China enter a deep mining stage, a roadway excavated under complex geological conditions such as deep soft rock, fault, high ground stress and the like is difficult to support and stabilize at one time, the control and treatment problems of roadway surrounding rock are increasingly shown, the treatment problem of roadway floor heave is particularly prominent, and a floor in a coal mine roadway becomes a weak link of roadway support due to non-support or weak support, so that surrounding rock stress is released, roadway deformation is shown on the floor first, floor heave phenomenon is formed, and floor heave further causes overall deformation and damage of the roadway. At present, most mines take the lying bottom as a main means for solving the bottom heave, so that temporary symptoms can be treated but not permanent symptoms can be treated, and because the bottom plate is the foundation of the roadway, the repeated falling of the bottom can also accelerate the deformation of two sides and a top plate of the roadway to become a booster for the instability of the roadway. The safe and efficient exploitation of deep resources in China is hindered.
Disclosure of Invention
In order to solve the problems, the invention provides a soft rock chamber floor heave treatment technology and a support structure thereof, and particularly relates to a soft rock chamber floor heave treatment support structure and a soft rock chamber floor heave treatment support method based on a prefabricated assembly type floor arc plate.
The invention aims to provide a soft rock chamber bottom bulging treatment supporting structure based on a prefabricated assembly type bottom arc plate.
The reinforced concrete wall rock wall comprises a steel support, prefabricated assembly type bottom arc plates, anchor cables and a bottom plate waterproof layer, wherein a plurality of prefabricated assembly type bottom arc plates are assembled to form a reinforced bottom plate, the steel support is supported or inserted on the prefabricated assembly type bottom arc plates at two end parts, the anchor cables penetrate through the prefabricated assembly type bottom arc plates and are anchored in the surrounding rock, anchoring ends of the anchor cables exceed the zero displacement marking depth of the bottom plate, and the bottom plate waterproof layer is laid on the inner sides of the prefabricated assembly type bottom arc plates.
Furthermore, two ends of the reinforced bottom plate are inserted into the surrounding rocks on the two sides.
Further, prefabricated assembled arc board comprises 2A type arc pieces and 1B type arc piece, B type arc piece is located between 2A type arc pieces to through bolted connection.
Furthermore, the A-shaped arc block comprises a protruding section and an arc section, one end of the protruding section is connected with the arc section, the other end of the protruding section is inserted into the surrounding rock of the side wall, the B-shaped arc block is the arc section, and two ends of the arc section are respectively connected with the arc section of the A-shaped arc block through bolts.
Furthermore, be equipped with at least one anchor rope hole on the inboard side on A type arc piece and the B type arc piece, be equipped with at least one bent shape bolt hole on medial surface and the terminal surface, bent shape bolt inserts through the bent shape bolt hole on the A type arc piece side and passes the bent shape bolt hole on A type arc piece and the B type arc piece contact terminal surface and wear out and lock through the nut on the B type cambered surface medial surface.
Furthermore, the connection part of the protruding section and the arc section of the A-shaped arc block is provided with an inclined plane, and a reinforcing steel bar bolt hole is formed in the inclined plane, so that the steel support is stably contacted with the A-shaped arc block and then inserted into the reinforcing steel bar section fixing support.
Furthermore, the depth of the anchor cable is 1 m-2 m greater than the depth of a zero-displacement marking, the depth of the zero-displacement marking, namely a boundary line formed by connecting rock masses which do not move upwards or downwards in the bottom plate, needs to be determined through field monitoring and theoretical analysis, and the bottom plate which is not observed can be obtained according to an engineering scale and theoretical analysis.
Further, the steel support is one of a steel pipe concrete support, a U-shaped steel support or an I-shaped steel support, or a comprehensive anchor cable or a comprehensive reinforced concrete pouring layer is used for replacing the steel support.
The soft rock chamber bottom bulging treatment supporting method based on the prefabricated bottom arc plate comprises the following steps:
(1) opening a side and jacking the underground chamber, and constructing two sides and a vault anchor net spraying support;
(2) mechanically excavating a bottom plate rock mass, cleaning muck after the design boundary of an excavated road, and spraying concrete with the thickness of 30-50 mm as a mattress layer;
(3) hoisting the B-shaped arc block, hoisting the A-shaped arc block, inserting the A-shaped arc blocks at two ends into the surrounding rocks at two sides, and connecting the A, B-shaped arc blocks by using curved bolts to form an assembled bottom arc plate;
(4) drilling a bottom plate anchor cable, installing a bottom control anchor cable, bonding the anchor cable in full length, and processing the end of the anchor cable to enable the tail part to be embedded into the anchor cable hole so as to prevent the anchor cable from puncturing the water resistance of subsequent construction;
(5) paving a waterproof layer on the inner side of the arc plate, and backfilling the bottom plate;
(6) and erecting a steel bracket or constructing other upper supporting bodies, and finishing the auxiliary process to finish the construction.
The supporting scheme can be completed by sequentially completing the steps along the longitudinal direction of the chamber.
The invention has at least the following beneficial effects:
(1) in the composite supporting scheme of the steel support, the prefabricated bottom arc plate, the bottom control anchor cable and the bottom plate waterproof layer, the bottom plate reinforced supporting technology is composed of the prefabricated bottom arc plate, the bottom control anchor cable and the bottom plate waterproof layer, so that the bottom bulging is effectively inhibited, the bottom plate supporting force is improved under the conventional supporting condition, and the rock mass quality of the soft rock bottom plate is optimized.
(2) The anchor end of the bottom control anchor cable must be the bottom plate zero displacement marking depth, so that the anchor head extends into the tensile strain compression area range to obtain stable anchor force, the anchor end is prevented from being possibly lifted along with the lifting of the bottom plate, the anchor cable cannot obtain stable anchor force, and the anchor effect cannot be exerted.
(3) And a bottom plate waterproof layer is laid on the inner side of the arc plate, waterproof coiled materials are fully laid on the inner side of the arc plate, and the waste water of the partition chamber permeates into the bottom plate to ensure the rock mass strength of the bottom plate.
(4) The prefabricated assembled arc plate is composed of 2A-type arc blocks and 1B-type arc block, each arc block can be prefabricated in a standardized mode, the thickness of each arc block and the reinforcing bars are designed according to the supporting force requirement, machining and assembling are convenient, and labor cost is saved.
(5) The protruding section of the A-shaped arc block is designed to enable the bottom arc plate to extend into the surrounding rocks at the two sides, so that the vertical pressure of the rock bodies at the two sides acts on the two ends of the reinforced concrete bottom arc plate, and the bottom arc plate is restrained from lifting; in order to be connected with the upper concrete-filled steel tube supporting body better, the arc block is made into an inclined plane and is provided with a reinforcing steel bar bolt hole, so that the arc block and the reinforcing steel bar bolt hole are stably contacted and then inserted into the reinforcing steel bar section for fixing.
(6) An anchor cable hole and a curved bolt connecting hole are reserved in the A, B-shaped arc blocks. After the anchor cable is inserted and fixed, the tail part of the anchor cable and the tray are reserved in the range of the anchor cable hole, and the tail part of the anchor cable is processed, so that the laying of a waterproof layer of a bottom plate at the later stage is facilitated, and the tail part of the anchor cable can be prevented from piercing the waterproof layer; the curved bolt attachment holes are to facilitate attachment between the arc blocks.
Drawings
Fig. 1 is a schematic view of a composite supporting structure;
FIG. 2 is a schematic structural view of an A-type arc block;
FIG. 3 is a schematic structural diagram of a B-type arc block;
fig. 4 is a structural schematic diagram of the prefabricated assembled bottom arc plate after assembly.
Description of the main reference numerals:
the steel support is characterized by comprising a steel support 1, 2-A type arc blocks, 3-B type arc blocks, 4-a bottom plate waterproof layer, 5-a curved bolt, 6-an anchor cable, 7-zero displacement marked lines, 8-a curved bolt hole, 9-an anchor cable hole and 10-a reinforcing steel bar bolt hole.
Detailed Description
The invention will be further explained with reference to the drawings.
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
As shown in the figure, the main structure of the invention mainly comprises a steel bracket 1, a prefabricated bottom arc plate 2, a bottom control anchor cable 6 and a bottom plate waterproof layer 4, wherein the full-section optimized supporting technology is realized by the high-bearing-capacity steel bracket 1, and the bottom plate reinforced supporting technology is realized by the combined supporting of the prefabricated bottom arc plate, the bottom control anchor cable 6 and the bottom plate waterproof layer 4.
Specifically, a plurality of prefabricated bottom arc plates are assembled to form a reinforced bottom plate, the steel support 1 is supported or inserted on the prefabricated bottom arc plates at two end parts, the anchor cable 6 penetrates through the prefabricated bottom arc plates and is anchored inside the surrounding rock, and the anchoring end of the anchor cable exceeds the depth of a zero-displacement marking 7 of the bottom plate. And (3) designing a bottom control anchor cable, quantitatively estimating the zero displacement marking depth of the bottom plate according to the study of the floor heave mechanism of a specific roadway, and selecting and matching corresponding bottom plate supporting force, wherein the anchor cable depth is 1-2 m greater than the zero displacement marking depth, so that the anchor head extends into a tensile strain compression area or a compressive strain compression area. The combined supporting force of the prefabricated arc plate and the bottom control anchor cable is not less than 1.2 times of the supporting force required by the reinforced support of the bottom plate.
The bottom plate waterproof layer 4 is laid on the inner side of the prefabricated assembly type bottom arc plate, waterproof coiled materials are specifically adopted to fully lay the inner side of the arc plate, and the waste water of the partition chamber permeates into the bottom plate, so that the rock mass strength of the bottom plate is ensured.
In order to enable the vertical pressure of the two sides of rock bodies to act on the two ends of the reinforced concrete bottom arc plate, the bottom arc plate is restrained from lifting, and the two ends of the reinforced bottom plate are inserted into the two sides of surrounding rocks.
Prefabricated assembled arc board comprises 2A type arc pieces 2 and 1B type arc piece 3, and B type arc piece 3 is located between 2A type arc pieces 2 to through bolted connection, A type arc piece 2 is including outstanding section and segmental arc, and the one end of outstanding section links to each other with the segmental arc, and during the other end inserted the country rock of side group, B type arc piece 3 was the segmental arc, the both ends of segmental arc respectively with the segmental arc bolted connection of A type arc piece.
The inner side faces of the A-type arc block 2 and the B-type arc block 3 are provided with at least one anchor cable hole 9, the inner side faces and the end faces are provided with at least one curved bolt hole 8, and a curved bolt penetrates through the curved bolt hole in the side face of the A-type arc block and the curved bolt hole in the contact end face of the B-type arc block to penetrate out of the inner side face of the B-type arc face and is locked through a nut. After the anchor cable 6 is inserted and fixed, the tail part of the anchor cable and the tray are reserved in the range of the anchor cable hole 9, and the tail part of the anchor cable is processed, so that the laying of the waterproof layer 4 of the bottom plate in the later period is facilitated, and the tail part of the anchor cable can be prevented from puncturing the waterproof layer.
In order to be better connected with the upper concrete-filled steel tube support body, the connection part of the protruding section and the arc section of the A-shaped arc block is provided with an inclined plane, and a steel bar bolt hole is formed in the inclined plane, so that the steel support is stably contacted with the A-shaped arc block and then is inserted into the steel bar section for fixation.
The construction process comprises the following steps:
(1) opening a side and jacking the underground chamber, and constructing two sides and a vault anchor net spraying support;
(2) mechanically excavating a bottom plate rock mass, cleaning muck after the design boundary of an excavated road, and spraying concrete with the thickness of 30-50 mm as a mattress layer;
(3) hoisting the B-shaped arc block, hoisting the A-shaped arc block, inserting the A-shaped arc blocks at two ends into the surrounding rocks at two sides, and connecting the A, B-shaped arc blocks by using curved bolts to form an assembled bottom arc plate;
(4) drilling a bottom plate anchor cable, installing a bottom control anchor cable, bonding the anchor cable in full length, and processing the end of the anchor cable to enable the tail part to be embedded into the anchor cable hole so as to prevent the anchor cable from puncturing the water resistance of subsequent construction;
(5) paving a waterproof layer on the inner side of the arc plate, and backfilling the bottom plate;
(6) and erecting a steel bracket or constructing other upper supporting bodies, completing the auxiliary process, and completing the supporting scheme by sequentially completing the steps along the longitudinal direction of the chamber after the construction is finished.
Generally, phi 194 x 10 steel pipes and C40 core concrete are selected.
The prefabricated bottom arc plate is prefabricated on the ground and transported to the underground for installation, and generally comprises 3 blocks, and the purpose of the prefabricated bottom arc plate is to provide a full-coverage supporting function for a bottom plate.
While the foregoing is directed to the preferred embodiment of the present invention, the scope of the present invention is not limited thereto, and it will be appreciated by those skilled in the art that changes and modifications may be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents, and that such changes and modifications are to be considered as within the scope of the invention.
Claims (5)
1. The soft rock chamber bottom bulging treatment supporting structure based on the prefabricated assembly type bottom arc plate is characterized by comprising a steel support, the prefabricated assembly type bottom arc plate, an anchor rope and a bottom plate waterproof layer, wherein a plurality of prefabricated assembly type bottom arc plates are assembled to form a reinforced bottom plate, the steel support is supported on the prefabricated assembly type bottom arc plates at two end parts, the anchor rope penetrates through the prefabricated assembly type bottom arc plate and is anchored in surrounding rocks, the anchoring end of the anchor rope exceeds the zero displacement marking depth of the bottom plate, and the bottom plate waterproof layer is laid on the inner side of the prefabricated assembly type bottom arc plate; two ends of the reinforced bottom plate are inserted into the surrounding rocks on the two sides; the prefabricated assembled bottom arc plate consists of 2A-shaped arc blocks and 1B-shaped arc block, and the B-shaped arc blocks are positioned among the 2A-shaped arc blocks and connected through bolts; the inner side surfaces of the A-type arc block and the B-type arc block are provided with at least one anchor cable hole; the A-shaped arc block comprises a protruding section and an arc section, one end of the protruding section is connected with the arc section, the other end of the protruding section is inserted into surrounding rocks of the side wall, the B-shaped arc block is an arc section, and two ends of the arc section are respectively connected with the arc section of the A-shaped arc block through bolts; the connection part of the protruding section and the arc section of the A-shaped arc block is provided with an inclined plane, and a steel bar bolt hole is formed in the inclined plane, so that the steel support is stably contacted with the A-shaped arc block and then is inserted into the steel bar section for fixation.
2. The support structure of claim 1, wherein the arc blocks a and B have at least one curved bolt hole on their inner side and end, and the curved bolt is inserted through the curved bolt hole on the inner side of the arc block a, inserted through the curved bolt hole on the contact end of the arc blocks a and B, and passed out of the inner side of the arc block B and locked by a nut.
3. Support structure as claimed in claim 1 or 2, wherein the cable bolt depth exceeds the zero displacement marking depth by 1m to 2 m.
4. A support structure as claimed in claim 3, wherein the steel bracket is one of a concrete filled steel tube bracket, a U-section steel bracket or an i-section steel bracket.
5. A method of supporting a structure according to any one of claims 1 to 4, including the steps of:
(1) opening a side and jacking the underground chamber, and constructing two sides and a vault anchor net spraying support;
(2) mechanically excavating a bottom plate rock mass, cleaning muck after excavating to a design boundary, and spraying concrete with the thickness of 30-50 mm as a mattress layer;
(3) hoisting the B-shaped arc block, hoisting the A-shaped arc block, inserting the A-shaped arc blocks at two ends into the surrounding rocks at two sides, and connecting the A, B-shaped arc blocks by using curved bolts to form an assembled bottom arc plate;
(4) drilling a bottom plate anchor cable, installing a bottom control anchor cable, bonding the anchor cable in full length, and processing the end of the anchor cable to enable the tail part to be embedded into the anchor cable hole so as to prevent the waterproof layer of subsequent construction from being punctured;
(5) paving a waterproof layer on the inner side of the bottom arc plate, and backfilling the bottom plate;
(6) erecting a steel bracket, completing the auxiliary process and finishing the construction;
the supporting scheme can be completed by sequentially completing the steps along the longitudinal direction of the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810957123.2A CN109184733B (en) | 2018-08-22 | 2018-08-22 | Soft rock chamber bottom heave treatment supporting structure and method based on prefabricated bottom arc plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810957123.2A CN109184733B (en) | 2018-08-22 | 2018-08-22 | Soft rock chamber bottom heave treatment supporting structure and method based on prefabricated bottom arc plate |
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| CN109184733A CN109184733A (en) | 2019-01-11 |
| CN109184733B true CN109184733B (en) | 2020-10-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111075477B (en) * | 2020-01-17 | 2021-11-12 | 中铁工程装备集团有限公司 | Semi-rigid supporting structure system of large-section soft rock tunnel and construction method of semi-rigid supporting structure system |
| CN111561329B (en) * | 2020-05-11 | 2022-03-15 | 中铁十八局集团有限公司 | Method for repairing water permeable cavern below inverted arch of railway tunnel in water reservoir explosion roof |
| CN112761674B (en) * | 2021-01-11 | 2023-08-08 | 上海应用技术大学 | Soft rock roadway bottom-bulging-preventing structure and construction method thereof |
| CN112983541B (en) * | 2021-04-01 | 2022-08-09 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Repair and treatment method suitable for deep tunnel inverted arch damage |
| CN113719316B (en) * | 2021-08-30 | 2022-04-22 | 安徽建筑大学 | Method for controlling soft rock roadway or chamber bottom plate of coal mine in stages |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002088789A (en) * | 2000-09-19 | 2002-03-27 | Ishikawajima Constr Materials Co Ltd | Arch tunnel |
| CN102797486A (en) * | 2012-08-30 | 2012-11-28 | 中国矿业大学 | Fabricated grilling anti-invert method for treating pucking |
| CN203756206U (en) * | 2014-03-19 | 2014-08-06 | 山东科技大学 | Novel soft-rock roadway floor heave governing structure |
| CN204253052U (en) * | 2014-11-13 | 2015-04-08 | 安徽理工大学 | A kind of lattice steel reinforced concrete antiarch support |
| CN206429265U (en) * | 2017-01-19 | 2017-08-22 | 中国水利水电第十四工程局有限公司 | One kind adapts to high purity gypsum rock section tunnel support structure |
| CN107795322B (en) * | 2017-11-06 | 2023-10-24 | 山东建筑大学 | Assembled concrete arc plate and chessboard type prestressed anchor cable composite supporting structure and construction method thereof |
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