CN117145523B - Sylvite inclined shaft mudstone section roof-falling treatment reinforcing structure and method - Google Patents
Sylvite inclined shaft mudstone section roof-falling treatment reinforcing structure and method Download PDFInfo
- Publication number
- CN117145523B CN117145523B CN202311424120.XA CN202311424120A CN117145523B CN 117145523 B CN117145523 B CN 117145523B CN 202311424120 A CN202311424120 A CN 202311424120A CN 117145523 B CN117145523 B CN 117145523B
- Authority
- CN
- China
- Prior art keywords
- roof
- inclined shaft
- section
- falling
- shaped steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 35
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 title claims abstract description 25
- 239000001103 potassium chloride Substances 0.000 title claims abstract description 25
- 235000011164 potassium chloride Nutrition 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 164
- 239000010959 steel Substances 0.000 claims abstract description 164
- 230000008093 supporting effect Effects 0.000 claims abstract description 70
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 239000004567 concrete Substances 0.000 claims abstract description 26
- 230000002787 reinforcement Effects 0.000 claims abstract description 23
- 239000011083 cement mortar Substances 0.000 claims abstract description 16
- 239000011435 rock Substances 0.000 claims description 28
- 239000002689 soil Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 7
- 238000005728 strengthening Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- 239000012779 reinforcing material Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000009434 installation Methods 0.000 description 7
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- PALNZFJYSCMLBK-UHFFFAOYSA-K magnesium;potassium;trichloride;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-].[Cl-].[K+] PALNZFJYSCMLBK-UHFFFAOYSA-K 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- 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
- E21D11/02—Lining predominantly with wood
-
- 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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- 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
- E21D11/14—Lining predominantly with metal
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a roof collapse treatment reinforcing structure and method for a sylvite inclined shaft mudstone section, and belongs to the technical field of mine roof safety; the reinforcing structure is divided into an upper section inclined shaft support, a roof-falling section inclined shaft support, a lower section inclined shaft support, a whole section inclined shaft arch and grouting reinforcement in a roof-falling area; the invention adopts a composite reinforcement mode of 'pipe shed + supporting foundation + metal net + U-shaped steel shed + arch and ground grouting': firstly inserting a pipe shed into the vault part of the inclined shaft in the roof-falling section, then arranging a supporting foundation on the bottom plate of the inclined shaft, then hanging a metal net in the inclined shaft, mounting the U-shaped steel shed above the supporting foundation by clinging to the metal net, then pouring concrete arch into the whole inclined shaft from bottom to top, and finally injecting cement mortar from the ground to fill and strengthen the roof-falling area; the invention effectively solves the problems of low structural support strength, poor anti-seepage effect and poor stability of the sylvite inclined shaft in the roof-falling treatment of the mudstone section, and has the characteristics of high structural stability, good waterproofness and high safety.
Description
Technical Field
The invention belongs to the technical field of mine roof safety, and particularly relates to a roof-falling treatment reinforcing structure and method for a mud rock section of a sylvite inclined shaft.
Background
The stratum traversed by the sylvite inclined shaft mainly comprises a fourth clay layer, a mudstone layer and a carnallite layer, wherein the stability of the fourth clay layer and the mudstone layer is relatively poor. Because the fourth clay layer is positioned on the upper layer, the buried depth is shallow, the ground pressure is small, the inclined shaft is usually excavated by adopting an open trench, the stability is ensured, but the mudstone layer is soft and easy to soften when meeting water, and the stability of the inclined shaft of the mudstone section is difficult to ensure by adopting the conventional construction process and supporting mode. In engineering, water leakage, water guide and ground pressure influence of a mudstone section often occur during roof fall accidents, and if roof support and waterproof treatment are improper during roof fall treatment, the roof safety of the inclined shaft of the section is influenced, and water can leak to a carnallite mineral layer (with solubility) at the lower side. Therefore, roof collapse treatment of the sylvite inclined shaft mudstone section is a technical problem to be solved urgently.
At present, the international potassium salt mine worker exploitation technology is relatively backward, and an effective technical scheme is not yet found in the existing books, reports and other documents at home and abroad for roof supporting technology and waterproof technology of potassium salt mine roadway roof caving treatment. According to research, the roof caving treatment of the sylvite mine roadway is usually referred to a coal mine roadway roof caving treatment process, a roof is mainly formed by adopting an anchor rod (or anchor rope), a metal net, a steel shed and sprayed concrete supporting mode, and the roof caving area is mainly formed by adopting a wood hiding and chemical expansion material (or cement mortar) injection treatment mode in the mine roadway. However, for the roof-falling treatment of the mud rock section of the sylvite inclined shaft, the anchoring force of the construction anchor rod (or anchor cable) cannot meet the requirement due to the softness of the mud rock, the effect of suspending surrounding rock is poor, and even the anchor rod (or anchor cable) cannot be constructed; the sprayed concrete cannot achieve a good water leakage prevention effect, and the supporting strength is low; the injected chemical expansion material has poor compression resistance, the material can deform when the surrounding rock pressure is large, and secondary collapse can occur in the roof-falling area; grouting in the inclined shaft, filling part of cement mortar to the upper side, adding grouting pressurizing equipment, and leaving a gap at the top. Therefore, after the process is used for treating the roof fall of the mud rock section of the sylvite inclined shaft, the stability and the water resistance of the inclined shaft cannot be guaranteed, if the shaft leaks water for a long time, mud rock is softened, the stability of the inclined shaft is further reduced, even secondary roof fall accidents occur, meanwhile, the leaking water can possibly flow to a carnallite layer on the lower side, the stability of the inclined shaft of the carnallite layer section is influenced, and the safety production of a mine is seriously influenced.
Disclosure of Invention
The invention overcomes the defects of the prior art, and provides a sylvite inclined shaft mudstone section roof-falling treatment reinforcing structure and method, which solve the problems of low structural support strength, poor anti-seepage effect and poor stability of the sylvite inclined shaft in the mudstone section roof-falling treatment.
In order to achieve the above purpose, the present invention is realized by the following technical scheme.
A sylvite inclined shaft mudstone section roof-falling processing reinforcing structure divides an inclined shaft into an upper section, a roof-falling section and a lower section along the boundary of a roof-falling area; reinforcing supports are arranged along the upper section, the roof-falling section and the lower section; the length of the reinforcing support in the upper section and the lower section is more than or equal to 5m; the reinforced support comprises a support foundation, a metal net and a plurality of U-shaped steel sheds; the supporting foundation is arranged below the bottom plate at two corners of the inclined shaft bottom plate along the inclined shaft trend; the metal net is hung on the inner wall of the inclined shaft; the U-shaped steel shed is erected closely to the metal net; leg end angle steel is welded at the bottom ends of greenhouse legs of the U-shaped steel greenhouse, and base channel steel is arranged at the upper end face of the supporting foundation and close to the inclined shaft upper part; the leg end angle steel is placed above the base channel steel for connection and fixation; two adjacent U-shaped steel sheds are connected through a shed pulling assembly; the reinforcement support is reinforced by a masonry arch; a pipe shed is arranged at the top of the reinforced supporting arch of the roof-falling section, one end of the pipe shed passes through the roof-falling section and then enters the surrounding rock at the top of the inclined shaft of the lower section, and the other end of the pipe shed is fixed below the U-shaped steel shed in the upper section by adopting a V-shaped hook; the gap between the pipe shed and the reinforcing support below the pipe shed is filled with a support material; reinforcing materials are poured into the roof-falling area.
Preferably, the short side of the leg end angle steel faces upwards and is tightly welded with the U-shaped opening end of the U-shaped steel shed, and the length of the short side is more than or equal to 80mm; the length of the long side of the leg end angle steel is at least 30mm larger than the height of the U port of the U-shaped steel shed; the notch of the base channel steel faces downwards and is poured with the supporting foundation, the length of the base channel steel is equal to that of the supporting foundation, and the width of the base channel steel is not less than half of the width of the upper end face of the supporting foundation.
Preferably, the arch center part and the arch base line positions of the two sides of the U-shaped steel arch are connected through the arch pulling assembly.
More preferably, the pull booth assembly comprises a pull plate and a pull rod; the pulling plate is fixedly connected to the inner side of the U-shaped steel shed; be equipped with two round holes on the arm-tie, two adjacent U shaped steel sheds pass two adjacent round holes of two arm-ties through the pull rod and connect, the length of pull rod is greater than 300mm of U shaped steel canopy's interval.
Preferably, the inclination angle of the pipe shed inserted into the roof falling area is 4-6 degrees smaller than the inclination angle of the inclined shaft; one end of the pipe shed enters the surrounding rock at the top of the inclined shaft of the lower section to a depth greater than the distance between the U-shaped steel sheds in the inclined shaft of the lower section, and the other end of the pipe shed is fixed below a second U-shaped steel shed adjacent to the roof-falling area through a V-shaped hook; the circumferential spacing of the tube sheds is less than or equal to 250mm.
More preferably, the two hooks on the upper side of the V-shaped hook penetrate into the U-shaped opening of the U-shaped steel shed, and the V-shaped part on the middle side hangs the pipe shed.
Preferably, the grouting pipe is vertically arranged from the ground right above the highest falling position in the roof fall area, cement mortar is injected into the grouting pipe, and the roof fall area is filled and reinforced by the cement mortar.
Preferably, the distance between the U-shaped steel sheds in the inclined shaft of the upper section and the inclined shaft of the lower section is not more than 1000mm, and the distance between the U-shaped steel sheds in the inclined shaft of the roof-falling section is less than or equal to 750mm.
A strengthening method based on a sylvite inclined shaft mudstone section roof-falling treatment strengthening structure comprises the following steps:
1) Upper section inclined shaft support: for the inclined shaft of the upper section with the inclined length of more than or equal to 5m from the upper side boundary of the roof-falling area, adopting the reinforcement support of the U-shaped steel shed which is firstly provided with a support foundation, then is hung with a metal net and finally is erected;
2) Roof-fall section inclined shaft support: firstly, inserting and fixing a pipe shed into a roof-falling area along the vault part of the U-shaped steel sheds at the middle parts of two U-shaped steel sheds of which the inclined shafts at the upper section are adjacent to the roof-falling area; then cleaning the falling rock soil in the inclined shaft below the roof falling area, and adopting the supporting mode of the step 1) to strengthen and support the inclined shaft of the roof falling section below the pipe shed, wherein a gap between the pipe shed and the U-shaped steel shed is filled by adopting a wood backboard during supporting;
3) Lower section inclined shaft support: carrying out reinforced support on a lower section inclined shaft with an inclined length of more than or equal to 5m from the lower side edge of the roof-falling area by adopting the support mode of the step 1);
4) Reinforcing the whole section of inclined shaft arch: pouring concrete arches into the reinforced lower section, the roof-falling section and the upper section inclined shaft from bottom to top in sequence, and pouring the metal net, the U-shaped steel shed and the shed pulling assembly together until the whole section of inclined shaft arches are reinforced;
5) Grouting reinforcement in the roof fall area: and injecting reinforcing materials into the roof-falling area until the whole roof-falling area is filled and reinforced.
Compared with the prior art, the invention has the following beneficial effects:
(1) The roof-falling processing reinforcement structure and the roof-falling processing reinforcement method provided by the invention creatively adopt a composite reinforcement mode of 'pipe shed + supporting foundation + metal net + U-shaped steel shed + arch + ground grouting', and the stability and the waterproofness of the inclined shaft in the whole roof-falling area are better. Firstly, a pipe shed is inserted into the vault part of the inclined shaft in the roof-falling section, so that a protection space is provided for cleaning the rock-falling soil in the inclined shaft below the roof-falling section, the secondary collapse of the roof-falling section is avoided, the reinforcement construction of the inclined shaft below the roof-falling section is avoided, and the safety protection of the structure is good; then supporting foundations are arranged at two corners of the bottom plate along the trend of the inclined shaft, and then the U-shaped steel canopy legs are arranged above the supporting foundations, so that the stress area of the U-shaped steel canopy legs is increased, and the steel canopy supporting strength is improved; then casting a concrete arch for the whole inclined shaft from bottom to top, casting the well wall tightly by utilizing the dead weight of the concrete, filling the cracks on the well wall with concrete slurry, casting metal components such as a metal net and a U-shaped steel shed together during the arch casting, and organically combining the rigid support of the concrete and the flexible support of the metal components, thereby ensuring the support strength and stability of the structure; and finally, cement mortar is injected into the roof-falling area from the ground without a pressurizing device, the roof-falling area is filled tightly by the self weight of the cement mortar, the roof-falling rate is good, and simultaneously, the cement mortar also fills cracks around the roof-falling area and gaps below the pipe shed, so that the secondary collapse of the roof-falling area is prevented, and the stability and the water resistance of the structure are enhanced.
(2) According to the roof-falling processing reinforcing structure, the upper section, the roof-falling section and the lower section inclined shaft are innovatively supported by the support foundation, the metal net and the U-shaped steel shed, so that the supporting strength of the inclined shaft in the roof-falling area is improved. The supporting foundation is arranged below the bottom plate at two corners of the inclined shaft bottom plate, so that water at the periphery of the roof falling area and the well wall can be prevented from leaking to the inclined shaft bottom plate through two-corner cracks of the bottom plate; the base channel steel is arranged on the upper end face of the supporting foundation close to the inclined shaft wall, and is equal to the supporting foundation in length and is poured together, so that the rigidity of concrete and the flexibility of the base channel steel are combined, and the strength of the supporting foundation is improved. The metal net is hung on the inner wall of the inclined shaft, the U-shaped steel shed is erected next to the metal net, the original well wall support of the inclined shaft is supported and reinforced, and the expansion of cracks generated by the well wall during roof fall can be prevented; the leg end angle steel with the short side upwards and close to the U-shaped opening end of the steel shed is welded at the bottom end of the U-shaped steel shed leg, deformation damage caused by stress concentration at the bottom end of the shed leg during installation can be avoided, and the supporting strength of the steel shed is improved. During installation, leg end angle steel on the U-shaped steel canopy leg is just placed above base channel steel of the upper end face of the supporting foundation, adjustment during installation is convenient, and deformation or damage caused by movement friction between the bottom end of the canopy leg and the supporting foundation is prevented.
(3) According to the roof-falling treatment reinforcing structure, one end of the pipe shed is obliquely inserted into the roof-falling area along the vault part of the U-shaped steel shed and enters into the surrounding rock at the top of the inclined shaft in the lower section, and the other end of the pipe shed is fixed below the U-shaped steel shed of the inclined shaft in the upper section by using the V-shaped hooks, so that the temporary protection effect of the pipe shed is fully exerted. The pipe shed traverses the roof-falling area to detect the size of the roof-falling area in the inclined direction, so that the parameters of the reinforced support in the inclined shaft of the roof-falling section can be timely and reasonably adjusted according to the span size of the roof-falling area, and the structural stability and safety are ensured; the pipe shed is inserted obliquely from the middle parts of the two U-shaped steel sheds adjacent to the roof-falling area (the insertion inclination angle is 4-6 degrees smaller than the inclined angle of the inclined shaft), so that the construction of the pipe shed is facilitated, and the top surrounding rock entering from the other end of the pipe shed can have certain supporting strength. The invention also provides a novel V-shaped hook, when the novel V-shaped hook is installed, the two hooks on the upper side extend into the U-shaped opening of the U-shaped steel shed, the V-shaped part on the middle side hangs the pipe shed, the novel V-shaped hook has the characteristics of simple manufacture and stable hanging, and the problem that the pipe shed cannot be fixed when the vault part of the U-shaped steel shed is arranged is solved.
Drawings
FIG. 1 is a cross-sectional layout view of a sylvite inclined shaft mudstone section roof-fall treatment reinforcing structure according to the invention;
FIG. 2 is a plan view of a roof-fall treatment reinforcing structure for a sylvite inclined shaft mudstone section according to the invention;
FIG. 3 is a cross-sectional view of a roof-fall treatment reinforcing structure for a sylvite inclined shaft mudstone section according to the invention;
FIG. 4 is a schematic structural view of a U-shaped steel shed according to an embodiment;
FIG. 5 is a schematic view of an installation at a support foundation according to an embodiment;
FIG. 6 is a schematic view showing fixing of one end of the pipe shed according to the embodiment;
fig. 7 is a schematic structural view of a V-shaped hook according to an embodiment.
In the figure: 1-inclined shaft; 2-roof fall area; 3-a supporting foundation; 4-a metal net; 5-U-shaped steel sheds; 6, base channel steel; 7-leg end angle steel; 8, pulling a plate; 9-a pull rod; 10-pipe shed; 11-V-shaped hooks; 12-a wood backboard; 13-waterproof concrete; 14-grouting pipe; 15-cement mortar; 16-ground.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail by combining the embodiments and the drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. The following describes the technical scheme of the present invention in detail with reference to examples and drawings, but the scope of protection is not limited thereto.
The embodiment is a main inclined shaft of a potassium salt mine, the inclined shaft has an inclination angle of 16 degrees, a semicircular arch-shaped section, a clear width of 4.2m and a clear height of 3.6m, is influenced by water seepage and ground pressure of a mudstone section, the inclined shaft 1 has roof fall accidents at a position which is 148m away from a shaft mouth, the inclined length of the bottom of a roof fall area 2 is primarily judged to be about 8m, the width of the inclined shaft is about 4m, the maximum roof fall height is about 5m, and the volume of the roof fall area 2 is about 125m 3 The reinforcement structure and the reinforcement method provided by the invention are adopted to carry out reinforcement treatment on the roof-falling area.
As shown in fig. 1 to 7, the embodiment provides a strengthening structure and method for roof-falling treatment of a sylvite inclined shaft mudstone section, wherein an inclined shaft 1 is divided into an upper section, a roof-falling section and a lower section along the boundary of a roof-falling area 2 for strengthening treatment, and the steps are as follows in sequence:
step one, upper section inclined shaft support
For the inclined shaft 1 of the upper section with the inclined length of not less than 5m from the upper side edge of the roof fall area 2, a reinforcing support of a preset support foundation 3, a metal net 4 and a final U-shaped steel canopy 5 is adopted. Before site construction, firstly, the scattered falling rock soil in the inclined shaft 1 of the upper section is cleaned, the wall of the inclined shaft 1 of the top section is knocked out, then the reinforcing length of the inclined shaft 1 of the upper section is reasonably determined according to the stability of the wall of the inclined shaft, but the length is not smaller than 5m, and meanwhile, a protection template is supported in the inclined shaft, so that the construction safety of personnel in the inclined shaft is ensured.
Specifically, firstly, a square ditch is newly dug at each of two corners of a bottom plate along the trend of an inclined shaft 1, then concrete is poured into the square ditches to form a supporting foundation 3, the upper end face of the supporting foundation 3 is flush with the bottom plate of the inclined shaft 1 during pouring, and a base channel steel 6 is arranged on the upper end face of the supporting foundation 3 close to the upper part of the inclined shaft; the notch of the base channel steel 6 faces downwards and is poured with the supporting foundation 3, the length of the base channel steel is equal to that of the supporting foundation 3, and the width of the base channel steel is not less than half of the width of the upper end face of the supporting foundation 3. During site construction, the excavation of the square ditch should be performed in a protective way so as to reduce damage to the wall and the bottom plate of the inclined shaft 1; the specification and the size of the excavated square ditch and the level of the poured concrete meet the requirements of supporting strength and water resistance so as to prevent water at the periphery of the roof fall area 2 and the well wall from leaking to the bottom plate of the inclined shaft 1 through the two-angle cracks of the bottom plate; the specification and the model of the base channel steel 6 are reasonably determined according to the size of the supporting foundation 3 and the supporting pressure of the U-shaped steel shed 5, so that the supporting foundation 3 is ensured to have enough supporting strength.
Then, a metal net 4 is hung in the inclined shaft 1, a U-shaped steel shed 5 is erected by clinging to the metal net 4, shed legs of the U-shaped steel shed 5 are arranged above the supporting foundation 3, and finally leg end angle steel 7 and base channel steel 6 are welded and fixed. Leg end angle steel 7 (as shown in fig. 4) is welded at the bottom end of the greenhouse leg of the U-shaped steel greenhouse 5, the short side of the leg end angle steel 7 faces upwards and is welded close to the U-shaped mouth end of the U-shaped steel greenhouse 5, the length of the short side is not less than 80mm, and the length of the long side is at least 30mm greater than the height of the U-shaped mouth of the steel greenhouse. When in field construction, the gap part of the U-shaped steel canopy 5 contacted with the inner wall of the inclined shaft 1 is back-aligned by adopting a back plate so as to enhance the supporting and reinforcing functions on the original well wall support of the inclined shaft 1 and prevent the expansion of well wall cracks; the specification and the model of the U-shaped steel canopy 5 are reasonably determined according to the span size and the supporting pressure of the roof fall area 2, and 3 sections of U-shaped steel (1 section top beam and 2 sections side beam) are adopted for assembling during processing so as to fully exert the flexible supporting function of the U-shaped steel canopy 5. The leg end angle steel 7 can be directly L-shaped angle steel, and can be processed by two steel plates, and the thickness and the width of the steel are reasonably determined according to the supporting pressure of the U-shaped steel shed 5. During installation, leg end angle steel 7 welded on the greenhouse legs of the U-shaped steel greenhouse 5 is required to be just placed above base channel steel 6 on the upper end face of the supporting foundation 3, adjustment is convenient during installation, and deformation or damage caused by movement friction between the bottom ends of the greenhouse legs and the supporting foundation 3 is prevented.
Further, the inner side of the U-shaped steel canopy 5 is welded with pull plates 8, and the single-frame U-shaped steel canopy 5 is welded with 3 pull plates 8 (as shown in fig. 4), which are respectively arranged at the middle part of the vault at the inner side of the canopy and the positions of the arch base lines at the two sides. Two round holes are formed in the pull plate 8, two adjacent U-shaped steel sheds 5 penetrate through the round holes in the pull plate 8 through pull rods 9 to be connected, the pull rods 9 are made of steel bars, and the length of each pull rod is 300mm larger than the distance between the U-shaped steel sheds 5. When in field construction, the strength of the pull plate 8 and the pull rod 9 should meet the strength requirement required by connecting the U-shaped steel sheds 5, the round hole above the pull plate 8 should meet the requirement of the pull rod 9 penetrating, when in installation, the pull rod 9 penetrates through round holes in the same position of the pull plate 8 on the two U-shaped steel sheds 5, and the pull rod 9 of the adjacent next U-shaped steel shed 5 penetrates through another round hole of the pull plate 8, so that the pull rods 9 are alternately arranged.
In the embodiment, the upper section inclined shaft support length is 6m, the size of the support foundation 3 is 300 multiplied by 300mm, the support foundation is formed by casting C30 concrete, the base channel steel 6 is 20 # common channel steel (the width is 200 mm), and the metal net 4 is a phi 6mm steel bar net with the grid spacing of 100 multiplied by 100mm; the U-shaped steel shed 5 is 29U-shaped steel, the leg end angle steel 7 is 160X 100X 10mm L-shaped angle steel, the pull plate 8 is 100X 60X 10mm steel plate, and the pull rod 9 is made of phi 20mm steel bars.
Step two, roof-falling section inclined shaft support
Firstly, inserting a pipe shed 10 into the roof fall area 2 along the vault part of the U-shaped steel sheds 5 at the middle part of two U-shaped steel sheds 5 adjacent to the roof fall area 2 of the inclined shaft 1 at the upper section, wherein the insertion inclination angle of the pipe shed 10 is 4-6 degrees smaller than that of the inclined shaft 1; one end of the pipe shed 10 passes through the roof fall area 2 and then enters the surrounding rock at the top of the inclined shaft 1 in the lower section, the entering depth is larger than the distance between the U-shaped steel sheds 5 in the inclined shaft in the lower section, and the other end of the pipe shed is fixed below the second U-shaped steel shed 5 adjacent to the roof fall area 2 by adopting a V-shaped hook 11 (as shown in figure 6). When in site construction, the insertion position of the inner pipe shed 10 of the inclined shaft 1 in the upper section is reasonably determined according to the stability of the top plate, and when the stability of the top plate is poor and the pressure of the roof fall area 2 is large, the same U-shaped steel shed is additionally arranged at the position close to the U-shaped steel shed 5 at the lowest side, so that the supporting capacity of the inclined shaft top plate at the boundary locking opening position on the upper side of the roof fall area 2 is increased. The inclination angle of the pipe shed 10 is convenient for construction, and the top surrounding rock entering from the other end of the pipe shed 10 is required to have a certain supporting thickness, the thickness of the surrounding rock is controlled to be 800-1200 mm, the supporting strength is insufficient when the thickness is too small, and the gap between the lower part of the pipe shed 10 and the steel shed is too large when the thickness is too large; the depth of entering the top surrounding rock is as deep as possible, so that the pipe shed 10 can not be pushed to the depth any more by the normal operation of the drilling machine, but the depth is larger than the distance between the U-shaped steel sheds 5 in the inclined shaft of the lower section, and the temporary protection effect of the pipe shed 10 is fully exerted. The size of the inclined direction of the roof-falling area 2 is detected according to the insertion depth of the pipe shed 10 and the resistance in the process, and the parameters of the reinforced support in the inclined shaft of the roof-falling section are timely and reasonably adjusted according to the span size of the roof-falling area 2.
Then, the falling rock soil in the inclined shaft 1 below the roof falling area 2 is cleaned, and then the inclined shaft of the roof falling section below the pipe shed 10 is reinforced and supported in a supporting mode in the first step, and the gap between the pipe shed 10 and the U-shaped steel shed 5 is filled by a wood back plate 12 during supporting; and (3) each time 1m of inclined long caving soil is cleaned in the inclined shaft 1, reinforcing and supporting the inclined shaft 1 in time, cleaning the caving soil after supporting is finished, and circulating until all the inclined shaft 1 in the roof-falling section is completely supported. During site construction, the caving soil should be cleaned slowly, so that secondary collapse of the caving region 2 caused by disturbance is avoided, a certain inclination angle is reserved on the surface of the cleaned caving soil, and landslide and rock rolling are prevented from being crashed into people or objects; the length of each time of cleaning the caving soil is not more than 1m, and the distance between the U-shaped steel sheds 5 in the inclined shaft 1 with the maximum construction length of 1m and the minimum construction length of the supporting foundation 3 and the base channel steel 6 in each time of construction is the roof-falling section when the support is reinforced.
Further, the pipe shed 10 is made of seamless steel pipes, one end of the pipe shed 10 is processed into a tip, and the circumferential spacing of the pipe shed 10 is not more than 250mm; the V-shaped hooks 11 are made of steel bars (as shown in fig. 7), the two hooks on the upper side penetrate into the U-shaped opening of the U-shaped steel shed 5, and the V-shaped part on the middle side hangs the pipe shed 10. During site construction, the pipe diameter and the wall thickness of the pipe shed 10 are reasonably determined according to the span size and the supporting pressure of the roof-falling area 2, two-inch or three-inch steel pipes are recommended to be adopted, the strength is insufficient when the pipe diameter is too small, and the insertion construction resistance is large when the pipe diameter is too large. The circumferential spacing of the pipe sheds 10 is reasonably determined according to the weight (including secondary collapse) of the rock soil left in the roof-falling area 2, when the rock soil left is heavy and the fine particle size is large, the pipe sheds 10 are arranged in an encrypted mode, if necessary, the pipe sheds 10 can be densely distributed or a layer of protection plate is additionally arranged below the pipe sheds 10, the supporting strength of the pipe sheds 10 is ensured, and the fine rock soil is prevented from falling to smash people or objects; when the span size of the roof fall area 2 is large, the pipe shed 10 can be inserted into a plurality of sections by adopting a welding mode. The V-shaped hook 11 is manufactured on site by adopting a steel bar, the height of the V-shaped hook is determined according to the distance between the pipe shed 10 and the second U-shaped steel shed 5 adjacent to the roof-falling area, and the V-shaped hook has the characteristics of simplicity in manufacturing and stability in hanging; when the V-shaped hooks 11 are hung in the middle area of the arch crown part of the steel shed, the V-shaped hooks 11 can directly stabilize one end of the pipe shed 10 due to the action of gravity, and when the V-shaped hooks 11 are hung in the areas on the two sides of the arch of the steel shed, the V-shaped hooks 11 are fixed on the U-shaped steel shed 5 in a welding mode; after the V-shaped hook 11 is hung, a pipe shed 10 with the length of 100mm is reserved outwards, and the redundant length part is cut off.
In the embodiment, the support length of the inclined shaft of the roof-falling section is 8m, the pipe shed 10 is made of 2 inch steel pipes with the wall thickness of 3.5mm, the insertion inclination angle is 11 degrees, the circumferential spacing is 200mm, 32 hooks are arranged in total, the length range is 9.8-11.2 m, and the V-shaped hooks 11 are made of phi 20mm steel bars.
Step three, lower section inclined shaft support
And (3) carrying out reinforced support on the inclined shaft 1 of the lower section with the inclined length of not less than 5m from the lower side edge of the roof-falling area in the support mode of the step one. Before site construction, the rest of caving soil in the inclined shaft 1 of the lower section is cleaned, the wall of the inclined shaft 1 of the upper lower section is knocked out, then the reinforcing length of the inclined shaft 1 of the lower section is reasonably determined according to the stability of the wall of the inclined shaft, but the length is not smaller than 5m, and meanwhile, a protection template is supported in the inclined shaft 1 of the section, so that the construction safety of personnel in the inclined shaft 1 is ensured.
Further, in the three steps, the distance between the U-shaped steel sheds 5 in the inclined shaft 1 of the upper section and the lower section is not more than 1000mm, and the distance between the U-shaped steel sheds 5 in the inclined shaft 1 of the roof-falling section is less than the distance between the U-shaped steel sheds 5 in the inclined shaft of the upper section and not more than 750mm. During site construction, the distance between the sections of U-shaped steel sheds 5 is comprehensively determined according to the conditions of the pressure of the roof-falling area 2, the section size of the inclined shaft 1, the stability of surrounding rocks and the like, so that the stability of the inclined shaft 1 is ensured.
In this embodiment, the length of the inclined shaft support in the lower section is 6m, the length of the reinforced support of the inclined shaft 1 in the whole roof-falling area is 20m, the distance between the U-shaped steel sheds 5 in the inclined shaft in the upper section and the inclined shaft in the lower section is 900mm, and the distance between the U-shaped steel sheds 5 in the inclined shaft in the roof-falling section is 700mm.
Fourth, strengthening the arch of the whole inclined shaft
And (3) pouring waterproof concrete 13 arches into the inclined shaft 1 of the lower section, the roof-falling section and the upper section after the reinforced support from bottom to top in sequence, and pouring the metal net 4, the U-shaped steel canopy 5, the pull plate 8, the pull rod 9 and the like into the inclined shaft from bottom to top until the arch reinforcement of the whole inclined shaft 1 is completed. When in site construction, the strength grade of the waterproof concrete 13 of the arch is comprehensively determined according to the conditions of the pressure of the roof fall area 2, the section size of the inclined shaft 1, the stability of surrounding rock and the like; proper amount of waterproof agent should be added in the waterproof concrete 13 to increase the waterproof property of the well wall after the arch; after the templates are supported, the waterproof concrete 13 is poured from bottom to top, the wall of the well is tightly poured by utilizing the dead weight of the waterproof concrete 13, and concrete slurry can fill cracks on the wall of the well, so that the support effect and the waterproof effect are good; when the arch is built, the metal components are poured together, and the rigid support of the waterproof concrete 13 and the flexible support of the metal components are organically combined, so that the support strength and the stability of the structure are ensured. When the inclined shaft in the whole roof-falling area is longer (calculated by 25 m) or the whole roof-falling treatment period is longer (calculated by 15 days) in construction, the inclined shaft 1 is divided into a plurality of sections to pour waterproof concrete 13 arches, the inclined shafts 1 in the lower section, the roof-falling section and the upper section are recommended to be respectively and independently used for the waterproof concrete 13 arches, and after the templates are supported in the single-section inclined shaft 1, the waterproof concrete 13 is poured from bottom to top so as to improve the supporting effect and the waterproof effect.
In this embodiment, the length of reinforcement of the waterproof concrete 13 of the inclined shaft 1 in the whole roof-falling area is 20m, the waterproof concrete 13 of the whole inclined shaft 1 is poured from bottom to top, and the strength grade of the waterproof concrete 13 of the arch is C40.
Fifthly, grouting reinforcement in roof-building area
From the highest landing position in the roof fall area 2The grouting pipe 14 is vertically arranged on the ground 16 right above, and cement mortar 15 is injected into the grouting pipe 14 until the whole roof fall area 2 is filled and reinforced. In the field construction, the grouting mode and procedure should be determined according to the volume of the space of the roof-falling area 2, when the volume is smaller (according to 150m 3 Meter), cement mortar 15 can be always injected until the roof fall area 2 is fully filled tightly; when the volume is larger, part of cement mortar 15 can be injected to the upper end surface position of the pipe shed 10, after the top plate of the inclined shaft 1 in the roof-falling section is basically stable, relatively quick and cheap concrete or chemical expansion materials are replaced and injected to most of the roof-falling area space, and finally, the cement mortar 15 is injected to fill the roof-falling area 2 completely and tightly. The method utilizes the dead weight of grouting materials to fill the roof-falling area 2 tightly, the roof-connecting rate is good, meanwhile, the cement mortar 15 is used for filling cracks around the roof-falling area 2 and gaps below the pipe shed 10, the roof-falling area 2 is prevented from collapsing secondarily, and the stability and the water resistance of the reinforcing structure of the whole roof-falling area 2 are enhanced.
In this example, the highest landing position in the roof fall area 2 is about 28m from the vertical depth of the ground 16, the grouting pipe 14 is a 4 inch steel pipe with the wall thickness of 4mm and the length of 29m, and the amount of the co-cementing mortar 15 is 132m 3 . Finally, the inclined shaft 1 mudstone section roof-falling treatment reinforcement engineering is finished on schedule, and the section inclined shaft wall stress strain observation data shows that the section inclined shaft has no deformation beyond the regulation and no secondary pressure, and the wall of the inclined shaft has no water leakage phenomenon, so that the stability and the waterproofness of the section inclined shaft are better, the expectations are reached, and the feasibility and the rationality of the reinforcement structure and the technical scheme of the method are proved.
Furthermore, the reinforcing structure and the reinforcing method provided by the invention can be popularized and applied to the roof caving treatment of inclined shafts or inclined roadways of other types of mines (including coal mines) in soft rock sections, and have the same beneficial effects.
While the invention has been described in detail in connection with specific preferred embodiments thereof, it is not to be construed as limited thereto, but rather as a result of a simple deduction or substitution by a person having ordinary skill in the art to which the invention pertains without departing from the scope of the invention defined by the appended claims.
Claims (9)
1. The roof-falling treatment reinforcing structure for the sylvite inclined shaft mudstone section is characterized in that an inclined shaft (1) is divided into an upper section, a roof-falling section and a lower section along the boundary of a roof-falling area (2); reinforcing supports are arranged along the upper section, the roof-falling section and the lower section; the length of the reinforcing support in the upper section and the lower section is more than or equal to 5m; the reinforced support comprises a support foundation (3), a metal net (4) and a plurality of U-shaped steel sheds (5); the supporting foundation (3) is arranged below the bottom plates at two corners of the bottom plate of the inclined shaft (1) along the trend of the inclined shaft (1); the metal net (4) is hung on the inner wall of the inclined shaft (1); the U-shaped steel shed (5) is erected closely to the metal net (4); leg end angle steel (7) is welded at the bottom ends of greenhouse legs of the U-shaped steel greenhouse (5), and base channel steel (6) is arranged at the upper end face of the supporting foundation (3) close to the upper part of the inclined shaft (1); the leg end angle steel (7) is placed above the base channel steel (6) for connection and fixation; two adjacent U-shaped steel sheds (5) are connected through a shed pulling assembly; the reinforcement support is reinforced by a masonry arch; a pipe shed (10) is arranged at the top of the reinforced supporting arch of the roof-falling section, one end of the pipe shed (10) passes through the roof-falling section and then enters the surrounding rock at the top of the inclined shaft of the lower section, and the other end of the pipe shed is fixed below the U-shaped steel shed (5) in the upper section by adopting a V-shaped hook (11); the gap between the pipe shed (10) and the reinforcing support below the pipe shed is filled with a support material; reinforcing materials are poured into the roof-falling area (2).
2. The potassium salt mine inclined shaft mudstone section roof-falling treatment reinforcing structure according to claim 1, wherein the short sides of leg end angle steel (7) face upwards and are welded close to the U-shaped opening end of the U-shaped steel shed (5), and the length of the short sides is more than or equal to 80mm; the length of the long side of the leg end angle steel (7) is at least 30mm larger than the height of the U-shaped opening of the U-shaped steel shed (5); the notch of the base channel steel (6) faces downwards and is poured with the supporting foundation (3), the length of the base channel steel (6) is equal to that of the supporting foundation (3), and the width of the base channel steel is not smaller than half of the width of the upper end face of the supporting foundation (3).
3. The roof-falling processing reinforcement structure for a sylvite inclined shaft mudstone section according to claim 1, wherein the arch middle part and the arch base line positions of the two sides of the U-shaped steel canopy (5) are connected through a canopy pulling assembly.
4. A sylvite inclined shaft mudstone section roof treatment strengthening structure according to claim 3, characterized in that the pull booth assembly comprises a pull plate (8) and a pull rod (9); the pulling plate (8) is fixedly connected to the inner side of the U-shaped steel shed (5); be equipped with two round holes on arm-tie (8), two adjacent U shaped steel sheds (5) pass two adjacent round holes of two arm-tie (8) through pull rod (9) and connect, the length of pull rod (9) is greater than the interval of U shaped steel canopy (5) 300mm.
5. The sylvite inclined shaft mudstone section roof-falling treatment reinforcing structure according to claim 1, wherein the inclination angle of the pipe shed (10) inserted into the roof-falling area (2) is 4-6 degrees smaller than the inclination angle of the inclined shaft (1); one end of the pipe shed (10) enters the surrounding rock at the top of the inclined shaft in the lower section to a depth greater than the distance between the U-shaped steel sheds (5) in the inclined shaft (1) in the lower section, and the other end of the pipe shed (10) is fixed below the second U-shaped steel sheds (5) adjacent to the roof-falling area (2) through V-shaped hooks (11); the circumferential spacing of the pipe sheds (10) is less than or equal to 250mm.
6. The potassium salt mine inclined shaft mudstone section roof-falling treatment reinforcing structure according to claim 5, wherein two hooks on the upper side of the V-shaped hook (11) penetrate into the U-shaped opening of the U-shaped steel shed (5), and the V-shaped part on the middle side hangs the pipe shed (10).
7. The roof-fall treatment reinforcement structure for a sylvite inclined shaft mudstone section according to claim 1, characterized in that the roof-fall area (2) is reinforced by vertically arranging a grouting pipe (14) from the ground (16) right above the highest falling position in the roof-fall area (2), and then injecting cement mortar (15) into the grouting pipe (14), and filling the cement mortar (15).
8. The sylvite inclined shaft mudstone section roof-falling treatment reinforcing structure according to claim 1, wherein the distance between the U-shaped steel sheds (5) in the inclined shaft (1) of the upper section and the lower section is not more than 1000mm, and the distance between the U-shaped steel sheds (5) in the inclined shaft (1) of the roof-falling section is smaller than the distance between the U-shaped steel sheds (5) in the inclined shaft (1) of the upper section and is less than or equal to 750mm.
9. A reinforcement method based on the roof-fall treatment reinforcement structure of a sylvite inclined shaft mudstone section according to any one of claims 1 to 8, characterized by comprising the following steps:
1) Upper section inclined shaft support: for the inclined shaft of the upper section with the inclined length of more than or equal to 5m from the upper side boundary of the roof-falling area, a supporting foundation (3) is arranged firstly, then a metal net (4) is hung, and finally, a U-shaped steel canopy (5) is erected for reinforcing and supporting;
2) Roof-fall section inclined shaft support: firstly, inserting and fixing a pipe shed (10) into a roof-falling area (2) along the vault part of the U-shaped steel sheds (5) at the middle parts of two U-shaped steel sheds (5) of the inclined shaft of the upper section adjacent to the roof-falling area; then cleaning the falling rock soil in the inclined shaft (1) below the roof falling area (2), and adopting the supporting mode of the step 1) to strengthen and support the inclined shaft of the roof falling section below the pipe shed (10), wherein a gap between the pipe shed (10) and the U-shaped steel shed (5) is filled by adopting a wood back plate (12) during supporting;
3) Lower section inclined shaft support: reinforcing and supporting the inclined shaft of the lower section with the inclined length of more than or equal to 5m from the lower side edge of the roof-falling area (2) in a supporting mode of the step 1);
4) Reinforcing the whole section of inclined shaft arch: pouring concrete arches into the reinforced lower section, the roof-falling section and the upper section inclined shaft from bottom to top in sequence, and pouring the metal net (4), the U-shaped steel canopy (5) and the canopy pulling assembly into the lower section, the roof-falling section and the upper section inclined shaft from bottom to top until the whole section inclined shaft arches are reinforced;
5) Grouting reinforcement in the roof fall area: and injecting reinforcing materials into the roof-falling area (2) until the whole roof-falling area (2) is filled and reinforced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311424120.XA CN117145523B (en) | 2023-10-31 | 2023-10-31 | Sylvite inclined shaft mudstone section roof-falling treatment reinforcing structure and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311424120.XA CN117145523B (en) | 2023-10-31 | 2023-10-31 | Sylvite inclined shaft mudstone section roof-falling treatment reinforcing structure and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117145523A CN117145523A (en) | 2023-12-01 |
| CN117145523B true CN117145523B (en) | 2023-12-26 |
Family
ID=88903102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311424120.XA Active CN117145523B (en) | 2023-10-31 | 2023-10-31 | Sylvite inclined shaft mudstone section roof-falling treatment reinforcing structure and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117145523B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB596408A (en) * | 1945-05-25 | 1948-01-02 | Zako Sytse Beijl | Improvements relating to tunnelling and like subterranean operations |
| JPH06346685A (en) * | 1993-06-03 | 1994-12-20 | Okumura Corp | Reaction force bearing structure for inclined shaft excavator |
| JP2001055896A (en) * | 1999-08-18 | 2001-02-27 | Okumura Corp | Bottom segment of inclined shaft and bottom structure |
| CN1948714A (en) * | 2006-11-06 | 2007-04-18 | 永城煤电集团有限责任公司 | Method of construction supporting protection for mine under ground tunnel surrounding rock broken |
| JP2009114643A (en) * | 2007-11-02 | 2009-05-28 | Makoto Uemura | Connecting structure of underground structure |
| CN101463725A (en) * | 2009-01-16 | 2009-06-24 | 鄂尔多斯市昊华精煤有限责任公司 | Tunneling construction method of fully mechanized tunnelling machine for weak-cementation eugeogenous rock dip drift |
| CN101929340A (en) * | 2009-12-31 | 2010-12-29 | 平煤建工集团有限公司 | Coal mine underground flat inclined tunnel pipe shed pre-grouting advance support construction process |
| JP2013147830A (en) * | 2012-01-18 | 2013-08-01 | Shimizu Corp | Filling method of backfill material |
| CN104481546A (en) * | 2014-11-25 | 2015-04-01 | 中铁十二局集团有限公司 | Doubly curved arch construction method for enabling inclined shaft of soft rock tunnel to enter main tunnel |
| WO2018161649A1 (en) * | 2017-03-07 | 2018-09-13 | 中国矿业大学 | Inclined shaft well wall concrete floor prestress loading apparatus |
| CN112012747A (en) * | 2020-08-21 | 2020-12-01 | 广东冠粤路桥有限公司 | Tunnel inclined shaft construction method for V-level surrounding rock soil texture |
| CN212508349U (en) * | 2020-06-30 | 2021-02-09 | 煤炭工业太原设计研究院集团有限公司 | Steel shed for supporting high-ground-pressure soft rock roadway |
| CN113047849A (en) * | 2021-05-20 | 2021-06-29 | 宜春学院 | Soft rock bias tunnel lining support construction method |
| CN114575879A (en) * | 2022-05-09 | 2022-06-03 | 煤炭工业太原设计研究院集团有限公司 | Safety protection method for bottom shaft of inclined shaft car throwing field |
| CN217270216U (en) * | 2022-05-24 | 2022-08-23 | 煤炭工业太原设计研究院集团有限公司 | Reinforced structure of tunnel intersection wall body |
| CN115788513A (en) * | 2023-01-17 | 2023-03-14 | 煤炭工业太原设计研究院集团有限公司 | Supporting waterproof structure and method for inclined shaft at junction of mudstone and carnallite deposits |
-
2023
- 2023-10-31 CN CN202311424120.XA patent/CN117145523B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB596408A (en) * | 1945-05-25 | 1948-01-02 | Zako Sytse Beijl | Improvements relating to tunnelling and like subterranean operations |
| JPH06346685A (en) * | 1993-06-03 | 1994-12-20 | Okumura Corp | Reaction force bearing structure for inclined shaft excavator |
| JP2001055896A (en) * | 1999-08-18 | 2001-02-27 | Okumura Corp | Bottom segment of inclined shaft and bottom structure |
| CN1948714A (en) * | 2006-11-06 | 2007-04-18 | 永城煤电集团有限责任公司 | Method of construction supporting protection for mine under ground tunnel surrounding rock broken |
| JP2009114643A (en) * | 2007-11-02 | 2009-05-28 | Makoto Uemura | Connecting structure of underground structure |
| CN101463725A (en) * | 2009-01-16 | 2009-06-24 | 鄂尔多斯市昊华精煤有限责任公司 | Tunneling construction method of fully mechanized tunnelling machine for weak-cementation eugeogenous rock dip drift |
| CN101929340A (en) * | 2009-12-31 | 2010-12-29 | 平煤建工集团有限公司 | Coal mine underground flat inclined tunnel pipe shed pre-grouting advance support construction process |
| JP2013147830A (en) * | 2012-01-18 | 2013-08-01 | Shimizu Corp | Filling method of backfill material |
| CN104481546A (en) * | 2014-11-25 | 2015-04-01 | 中铁十二局集团有限公司 | Doubly curved arch construction method for enabling inclined shaft of soft rock tunnel to enter main tunnel |
| WO2018161649A1 (en) * | 2017-03-07 | 2018-09-13 | 中国矿业大学 | Inclined shaft well wall concrete floor prestress loading apparatus |
| CN212508349U (en) * | 2020-06-30 | 2021-02-09 | 煤炭工业太原设计研究院集团有限公司 | Steel shed for supporting high-ground-pressure soft rock roadway |
| CN112012747A (en) * | 2020-08-21 | 2020-12-01 | 广东冠粤路桥有限公司 | Tunnel inclined shaft construction method for V-level surrounding rock soil texture |
| CN113047849A (en) * | 2021-05-20 | 2021-06-29 | 宜春学院 | Soft rock bias tunnel lining support construction method |
| CN114575879A (en) * | 2022-05-09 | 2022-06-03 | 煤炭工业太原设计研究院集团有限公司 | Safety protection method for bottom shaft of inclined shaft car throwing field |
| CN217270216U (en) * | 2022-05-24 | 2022-08-23 | 煤炭工业太原设计研究院集团有限公司 | Reinforced structure of tunnel intersection wall body |
| CN115788513A (en) * | 2023-01-17 | 2023-03-14 | 煤炭工业太原设计研究院集团有限公司 | Supporting waterproof structure and method for inclined shaft at junction of mudstone and carnallite deposits |
Non-Patent Citations (8)
| Title |
|---|
| 富水软岩斜井井筒涌水防治与围岩稳定研究;任冬冬;滕方正;韩星;;价值工程(第19期);全文 * |
| 斜井掘进表土淋水段支护技术;勾攀峰, 于顺昌, 胡智友, 邵剑凤;矿山压力与顶板管理(第Z1期);全文 * |
| 斜井破碎围岩分步耦合注浆复合支护设计技术;桑宗其;;煤炭工程(第05期);全文 * |
| 斜井表土层穿越淋水区支护工艺方案调整;常乐;范书恒;;西部探矿工程(第09期);全文 * |
| 松散软岩巷道施工及支护技术;许汇海;;煤炭工程(第01期);全文 * |
| 管棚支护在煤巷施工中的应用分析;刘发志;朱本斌;;煤矿现代化(第04期);全文 * |
| 管棚注浆在斜井井筒过流砂层中的应用;殷军练;;能源与节能(第12期);全文 * |
| 网壳锚喷支护在高应力软岩斜井井筒修复中的应用;江萍;建井技术(第Z1期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117145523A (en) | 2023-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104612162B (en) | A kind of Deep Foundation Pit of Metro Stations excavation construction method | |
| CN104032758B (en) | Extra-high reinforced construction method in discarded pit | |
| CN105155550B (en) | Construction method for digging deep foundation pit in large-thickness highly weathered sandstone stratum in combined supporting mode | |
| CN105951848A (en) | Non-intermittent composite transfer structure for super-deep foundation pit support and construction method | |
| CN111560962A (en) | Backfill area foundation pit supporting structure and construction method thereof | |
| CN210104758U (en) | Foundation pit supporting system of soil nail bored concrete pile anchor cable combination | |
| CN110847224A (en) | Filling slope gravity retaining wall reinforcing structure and construction method thereof | |
| CN112963156A (en) | Composite reinforcing method and composite reinforcing structure for shallow tunnel in soil-rock composite stratum | |
| CN205382507U (en) | Two -way anchored retaining wall by tie rods | |
| CN102235007B (en) | Method for supporting deep foundation with upper nail-lower pile combination | |
| CN109989407B (en) | Roadbed pile tube curtain supporting structure behind newly-added two-line platform of railway | |
| CN108951647A (en) | Construction method for supporting is excavated in hole in the hole of open trench tunnel | |
| CN117145523B (en) | Sylvite inclined shaft mudstone section roof-falling treatment reinforcing structure and method | |
| CN114622574B (en) | Water-rich throwing filling deep foundation pit water interception excavation supporting method and supporting device | |
| CN1027387C (en) | Method for supporting deep-foundation side wall by use of channel-section steel and anchor bar concrete pile | |
| CN110805049A (en) | Construction method of mountain slope ultra-thickness spray anchor permanent supporting structure | |
| CN112813984B (en) | Deep foundation pit construction method under complex geological condition | |
| CN115717397A (en) | Larsen steel sheet pile and prestressed anchor cable combined supporting construction method | |
| CN212225231U (en) | Protective structure for bias tunnel portal | |
| CN210530848U (en) | Large-span small-clear-distance asymmetric section tunnel supporting structure in loess region | |
| CN209923943U (en) | Piping lane open cut foundation ditch lateral wall crosses retaining structure of branch pipe ditch | |
| CN218479174U (en) | Compound retaining structure of deep basal pit | |
| CN216839459U (en) | Vertical variable cross-section structure adjacent to deep and shallow foundation pit in foundation pit | |
| CN217480236U (en) | Pile-plate type retaining wall suitable for high slope | |
| CN220266625U (en) | Grouting piece stone retaining wall body grouting reinforcement structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |