CN203531955U - Gob-side entry retaining three-dimensional reinforced filling wall body structure - Google Patents
Gob-side entry retaining three-dimensional reinforced filling wall body structure Download PDFInfo
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- CN203531955U CN203531955U CN201320593979.9U CN201320593979U CN203531955U CN 203531955 U CN203531955 U CN 203531955U CN 201320593979 U CN201320593979 U CN 201320593979U CN 203531955 U CN203531955 U CN 203531955U
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Abstract
The utility model discloses a gob-side entry retaining three-dimensional reinforced filling wall body structure. The gob-side entry retaining three-dimensional reinforced filling wall body structure comprises a wall body (9), a plurality of top plate reinforcing anchor rods (11), a plurality of bottom plate reinforcing anchor rods (12), a plurality of trend deformed steel bars (10), a plurality of tendency wall-penetrating anchor rods (8) and a plurality of steel channels (13), wherein the top plate reinforcing anchor rods (11) are buried in the wall body (9) and a roadway top plate, the bottom plate reinforcing anchor rods (12) are buried in the wall body (9) and a roadway bottom plate, part of each trend deformed steel bar (10) is buried in the wall body (9), the tendency wall-penetrating anchor rods (8) penetrate through the wall body (9), holes permitting the tendency wall-penetrating anchor rods (8) to penetrate out are formed in the steel channels (13), and a locking mechanism fixes the multiple steel channels (13) to the wall faces of the front side and the back side of the wall body (9). The gob-side entry retaining three-dimensional reinforced filling wall body structure is simple in structure, low in filling cost and capable of meeting the gob-side support requirement.
Description
Technical field
The utility model relates to a kind of filled wall bodies of gob-side retained entries structure, particularly relates to the three-dimensional solidifying fills body of wall of a kind of gob side entry retaining gangue concrete.
Background technology
After coal face was adopted, former work plane upper curtate (or lower curtate) tunnel is remained, when Adjacent Working Face is exploited, use, the tunnel of staying is called gob side entry retaining.After exploiting field upper curtate work plane is adopted, along the empty tunnel of staying, in the time of can be for lower curtate working face extraction as return airway.
It is fast that current integrated poured roadside packing technology has the resistance of increasing speed, bearing value is large, good seal performance and mechanization degree advantages of higher, filler mostly is like lotion, concrete, high-water material etc., composition generally comprises stone, cement, sand and additive, must set up on ground feed proportioning system, transportation and pumping filling system, and cost is high, investment is large, system complex.
Secondly, (10% left and right that spoil output is coal production, the spoil that newly produces and be deposited in every year earth's surface is about 1.5-3 hundred million m in the tunneling process of coal cutting roadway, will to get rid of a large amount of spoils
3), spoil drains into ground and throws aside, often in colliery, is piled into hillock, takies tract, is both and produces various toxic and harmfuls, and pollutant atmosphere, also easily produces the various geological disasters such as slump in rainy season.If allow spoil not go out well, refuse carries out down-hole utilization, and not only environmental protection can also produce economic benefit.
Utility model content
The technical problems to be solved in the utility model is the shortcoming that overcomes existing roadside packing technology, provide a kind of simple in structure, filling cost is low and can meet the three-dimensional solidifying fills wall body structure of gob side entry retaining of roadside support requirement.
The three-dimensional solidifying fills wall body structure of gob side entry retaining, is characterized in that: comprising:
Wall body, for rectangular-shaped, its highly same head-room;
A plurality of top boards are strengthened anchor pole, and described in each, a part for top board reinforcement anchor pole is embedded in described wall body, and a part is embedded in back;
A plurality of base plates are strengthened anchor pole, and described in each, a part for base plate reinforcement anchor pole is embedded in described wall body, and a part is embedded in roadway floor;
A plurality of screw-thread steels that move towards, a part of moving towards screw-thread steel described in each is embedded in described wall body, and a part is exposed from the described wall body left and right sides;
A plurality of tendencies anchor pole through walls, is inclined to anchor pole through walls described in each whole in described wall body, and expose from the both sides, front and back of described wall body at two ends;
A plurality of channel-section steels, are provided with the hole passing for described tendency anchor pole through walls on it, retaining mechanism is fixed on described channel-section steel on the metope of described wall body front side and rear side.
The three-dimensional solidifying fills wall body structure of gob side entry retaining described in the utility model, it is two rows that wherein said top board is strengthened anchor pole, described in each, top board is strengthened the long 1800-2200mm of being of anchor pole, end face and back perpendicular to described wall body, wherein be embedded in the long 700-1300mm of being of part in described back, the distance in same row between adjacent two described top boards reinforcement anchor poles and the described top board reinforcement of two rows anchor pole is all between 900-1500mm.
The three-dimensional solidifying fills wall body structure of gob side entry retaining described in the utility model, it is two rows that wherein said base plate is strengthened anchor pole, described in each, base plate is strengthened the long 1800-2200mm of being of anchor pole, bottom surface and roadway floor perpendicular to described wall body, wherein be embedded in the long 700-1300mm of being of part in described roadway floor, the distance in same row between adjacent two described base plates reinforcement anchor poles and the described base plate reinforcement of two rows anchor pole is all between 900-1500mm.
The three-dimensional solidifying fills wall body structure of gob side entry retaining described in the utility model, the wherein said screw-thread steel that moves towards is two row, side, two of left and right perpendicular to described wall body is buried underground, two described move towards between screw-thread steel and the described distance of moving towards between screw-thread steel of two row is 900-1500mm in same row, described in each, moving towards screw-thread steel length is 1800-2200mm, bury part underground long for 800-1200mm, remaining outside exposed, as the screw-thread steel that moves towards in the wall body of next buttress filled wall.
The three-dimensional solidifying fills wall body structure of gob side entry retaining described in the utility model, wherein said tendency anchor pole through walls is two rows, described in each, be inclined to anchor pole through walls perpendicular to former and later two sides of described wall body and be applied in described wall body, expose from the both sides, front and back of described wall body at two ends, the two ends that described tendency anchor pole through walls exposes are helicitic texture, and the distance in same row or same row between adjacent two described tendency anchor poles through walls is 900-1500mm; Two ends exposed portions serve is long is 15-30mm; The length of described tendency anchor pole through walls is 1800-2200mm;
On described channel-section steel, be provided with the hole passing for described tendency anchor pole through walls, expose from described hole at the two ends of described tendency anchor pole through walls, adopt pallet and nut to coordinate with described helicitic texture described a plurality of channel-section steels are fixed on the metope of described wall body front side and rear side, the initial pretightning force of described tendency anchor pole through walls after fixing is between 50-100KN;
On each side, described wall body 9 front and back, the quantity of fixing described channel-section steel is identical with the columns of described tendency anchor pole through walls, described tendency anchor pole through walls in same row is fixed on same described channel-section steel, and the height of described channel-section steel is identical with the height of described wall body.
The three-dimensional solidifying fills wall body structure of the utility model gob side entry retaining difference from prior art is:
It is a kind of simple in structure that the utility model provides, the three-dimensional solidifying fills wall body structure of the low gob side entry retaining with meeting roadside support requirement of filling cost, certain aggregate proportioning guarantees the requirement of strength of structure wall, three-dimensional bar construction is reinforced filled wall, simultaneously, make full use of spoil, described tendency anchor pole through walls, move towards screw-thread steel, anchor pole strengthened by top board and base plate reinforcement anchor pole forms three-dimensional reinforcement frame jointly, can control the shape of filled wall, improve the globality of filled wall, reduce filled wall across pitch, distortion and displacement in tendency and vertical base plate direction, the filled wall both sides that form are coupled to each other with described channel-section steel, can keep the complete of top, side, and globality is strong, make roadway's sides and roof and floor produce uniform distortion, on a large scale interior totally-enclosed anti-leakage, the three-dimensional solidifying fills wall body structure of gob side entry retaining of the final a kind of gangue concrete filling forming can better be controlled distortion, keep the complete of filled wall top, side, globality is strong, improve supporting capacity and integrality that back and two is helped, make roadway's sides and roof and floor produce distortion uniformly, totally-enclosed anti-leakage on a large scale, makes tunnel meet to the full extent the needs on producing.
Described gangue concrete filled wall makes full use of the discarded spoil in down-hole, has overcome the shortcoming of spoil occupation of land and contaminated environment, turns waste into wealth; Described channel-section steel can keep the complete of top, side, and globality is strong, makes roadway's sides and roof and floor produce distortion uniformly, on a large scale in totally-enclosed anti-leakage; Described top board is strengthened the long 1800-2200mm of anchor pole, described top board is strengthened anchor pole part and is vertically squeezed into top board, remainder is embedded in described gangue concrete filled wall by gangue concrete filling, by described top board, strengthen the shear resistance of anchor pole, solidifying fills body of wall also stops the horizontal passing of top board rotation unstability to gob side entry retaining body of wall, now technology easy overall offset when top board rotation unstability; Described top board is strengthened anchor pole and is vertically squeezed into the long 700-1300mm of top plate portion, guarantees that top board has certain range of resistance to anchor pole, squeezes into bottom parts too short, and the resistance providing is little, squeezes into top plate portion oversize, and resistance increment is not obvious, and Expenses Cost is higher; Described base plate is strengthened the long 1800-2200mm of anchor pole, described base plate is strengthened anchor pole part and is vertically squeezed into base plate, remainder is embedded in described gangue concrete filled wall by gangue concrete filling, by described base plate, strengthen anchor pole shear resistance, solidifying fills body of wall also stops the horizontal passing of base plate rotation unstability to gob side entry retaining body of wall.
Described wall body is gangue concrete filled wall, the ratio of its composition and each composition makes the intensity of wall body described in the utility model and performance reach best, described spoil particle diameter is 10-30mm continuous grading, short grained spoil is filled the space of medium grain just, the spoil of medium grain is filled oarse-grained space just, improve density, thereby guarantee that height ratio meets the requirement of strength of roadside support when using spoil; The too little meeting of spoil particle diameter causes strength of wall body too low, and spoil particle diameter is conference filling pipeline blockage etc. too; Described portland cement other kind cement of comparing, cost is relatively low, and hardening rate is fast, early strong high, can meet supporting requirement; Described liquid alkali-free quick-coagulant can make gangue concrete final strength remain between 90-110%, non-corrosiveness; Described interior curing agent can be guaranteed the even aquation of cast-in-place gangue concrete cement, and this inner maintenance greatly reduces initial stage contraction, gain in strength and density, thus the caking property of enhancing and front one deck, adhesion strength can be up to 3MPa.
Below in conjunction with accompanying drawing, the three-dimensional solidifying fills wall body structure of gob side entry retaining described in the utility model is described further.
Accompanying drawing explanation
Fig. 1 is the position view of filled wall described in the utility model in tunnel in gob side entry retaining;
Fig. 2 is the top view of the three-dimensional solidifying fills wall body structure of gob side entry retaining described in the utility model;
Fig. 3 is the elevation of the three-dimensional solidifying fills wall body structure of gob side entry retaining described in the utility model;
Fig. 4 is the stereogram of the three-dimensional solidifying fills wall body structure of gob side entry retaining described in the utility model.
The specific embodiment
As shown in Figure 1, be the plane structure schematic diagram of down-hole each several part, comprise work plane coal body 3, lower work plane coal body 6, this work plane coal body 2, return airway 1, transportation lane 5, goaf 4; The three-dimensional solidifying fills wall body structure 7 of gob side entry retaining described in the utility model is arranged in goaf 4 near the position of transporting lane 5.
As shown in Figure 2 to 4, the three-dimensional solidifying fills wall body structure 7 of gob side entry retaining described in the utility model comprises:
A plurality of top boards are strengthened anchor pole 11, and described in each, a part for top board reinforcement anchor pole 11 is embedded in described wall body 9, and a part is embedded in back;
A plurality of base plates are strengthened anchor pole 12, and described in each, a part for base plate reinforcement anchor pole 12 is embedded in described wall body 9, and a part is embedded in roadway floor;
A plurality of screw-thread steels 10 that move towards, a part of moving towards screw-thread steel 10 described in each is embedded in described wall body 9, and a part is exposed from described wall body 9 left and right sides;
A plurality of tendencies anchor pole 8 through walls, is inclined to anchor pole 8 through walls described in each whole in described wall body 9, and expose from the both sides, front and back of described wall body 9 at two ends;
A plurality of channel-section steels 13, are provided with the hole passing for described tendency anchor pole 8 through walls on it, retaining mechanism is fixed on a plurality of described channel-section steels 13 on the metope of described wall body 9 front sides and rear side.
As shown in Figure 2 to 4, the three-dimensional solidifying fills wall body structure 7 of gob side entry retaining described in the utility model comprises:
A plurality of top boards are strengthened anchor pole 11, and described in each, a part for top board reinforcement anchor pole 11 is embedded in described wall body 9, and a part is embedded in back;
A plurality of base plates are strengthened anchor pole 12, and described in each, a part for base plate reinforcement anchor pole 12 is embedded in described wall body 9, and a part is embedded in roadway floor;
A plurality of screw-thread steels 10 that move towards, a part of moving towards screw-thread steel 10 described in each is embedded in described wall body 9, and a part is exposed from described wall body 9 left and right sides;
A plurality of tendencies anchor pole 8 through walls, is inclined to anchor pole 8 through walls described in each whole in described wall body 9, and expose from the both sides, front and back of described wall body 9 at two ends;
A plurality of channel-section steels 13, are provided with the hole passing for described tendency anchor pole 8 through walls on it, retaining mechanism is fixed on described channel-section steel 13 on the metope of described wall body 9 front sides or rear side.
It is two rows that described top board is strengthened anchor pole 11, described in each, top board is strengthened the long 2200mm of being of anchor pole 11, described top board is strengthened anchor pole 11 perpendicular to end face and the back of described wall body 9, wherein be embedded in the long 1100mm of being of part in described back, the distance that in same row, adjacent two described top boards are strengthened between anchor pole 11 is 900mm, and array pitch is required L.
In the situation that Support Resistance F is definite, by formula below, calculates described top board and strengthen anchor pole (11) and base plate reinforcement anchor pole (12) array pitch L:
τ
1shear strength for every anchor pole; L is array pitch; F is filled wall Support Resistance; θ is immediate roof inclination angle; C is the cohesive strength of filled wall and coal seam interface; σ is normal stress;
for interior poly-angle of friction;
Wherein, τ
1get 1.5MPa; F gets 6.4MPa; θ gets 20; C gets 0.4MPa; σ gets 6.0MPa;
get 35; Obtaining L is 0.52m.
It is two rows that described base plate is strengthened anchor pole 12, described in each, base plate is strengthened the long 1800mm of being of anchor pole 12, described base plate is strengthened anchor pole 12 perpendicular to bottom surface and the roadway floor of described wall body 9, wherein be embedded in the long 900mm of being of part in described roadway floor, the distance that in same row, adjacent two described base plates are strengthened between anchor pole 12 is 1200mm, and array pitch is required L.τ
1get 1.5MPa; F gets 6.4MPa; θ gets 20; C gets 0.4MPa; σ gets 6.0MPa;
get 35; Obtaining L is 0.52m.
The described screw-thread steel 10 that moves towards is two row, perpendicular to the side, two of left and right of described wall body 9, buries underground, and in same row, two described distances of moving towards between 10 of screw-thread steel and two row are 1000mm.
Described tendency anchor pole 8 through walls is two rows, described in each, be inclined to anchor pole 8 through walls perpendicular to former and later two sides of described wall body 9 and be applied in described wall body 9, expose from the both sides, front and back of described wall body 9 at two ends, the two ends that described tendency anchor pole 8 through walls exposes are helicitic texture, distance in same row between adjacent two described tendencies anchor pole 8 through walls is 1000mm, array pitch is required L, is 0.52m, and two ends exposed portions serve is long is 15mm.
On described channel-section steel 13, be provided with the hole passing for described tendency anchor pole 8 through walls, expose from described hole at the two ends of described tendency anchor pole 8 through walls, adopting pallet and nut to coordinate with described helicitic texture is fixed on described a plurality of channel-section steels 13 on the metope of described wall body 9 front sides and rear side, be on front side and rear side metope, to fix respectively the described channel-section steel 13 of half quantity, the two ends of being inclined to anchor pole 8 through walls described in each are fixing by described channel-section steel 13 by pallet and nut, the initial pretightning force of described tendency anchor pole 8 through walls is 100KN, described pretightning force applies when screwing nut at its two ends when just having filled concrete wall, now concrete wall does not solidify completely, can exert pressure to whole tendency anchor pole 8 through walls.
On each side, described wall body 9 front and back, the quantity of fixing described channel-section steel 13 is identical with the columns of described tendency anchor pole 8 through walls, described tendency anchor pole 8 through walls in same row is fixed on same described channel-section steel 13, and the height of described channel-section steel 13 is identical with the height of described wall body 9.
Described wall body 9 is gangue concrete filled wall, and its material by following component forms: 300 parts, 1.35 parts of 400 parts of 1000 parts of 600 parts of spoils, portland cements, sands, the aquation controlling agents that particle diameter is 10-30mm, 1 part of interior curing agent, 25 parts of alkali-free liquid accelerators and water.Wherein, described interior curing agent is the interior curing agent of WMEYCO TCC535 model that BASF chemical building material Co., Ltd produces; Described alkali-free liquid accelerator is the SA145 model accelerating admixture that BASF chemical building material Co., Ltd produces; Described aquation controlling agent is that Beijing Gong Chang builds the AE-18 aquation controlling agent that construction work Co., Ltd produces.
Under limiting case, Support Resistance F is calculated by formula below:
In formula, W
0for residual border is from heavy load moment of flexure;
W
1the moment of flexure producing at breaking part shearing while being caving for immediate roof roof strata; M is rock stratum up sequence number successively from coal seam, W
2for all Fractured Roof ultimate bending moments;
W
2=δρl
2/4=p
tδ/6
In formula: P
tfor roadside support compressive strength, MPa; M is rock stratum up sequence number successively from coal seam, the density that ρ is rock stratum, kg/m
3; δ is the bed thickness of rock stratum, m; α is the complementary angle at the disrumpent feelings angle of rock stratum; L is the immediate roof length of always hanging oneself from a beam, m.
In the present embodiment, work plane gob side entry stays the about 650m of lane segment length, 20 ° of inclination angle average out to, coal seam average thickness 5.1m.Immediate roof is the Sandy Silt that average 6.7m is thick, and old top is the thick thin medium sandstone of average 2.4m, and base plate is the Sandy Silt that 2.5m is thick.
Table 1 face roof parameter list
Above numerical value is brought in formula, and can obtain rational Support Resistance is 5.8MPa.
In the situation that Support Resistance F is definite, by formula below, calculated the width of described wall body:
In formula, b is roadside support mean breadth, m;
F is the required supporting filling body intensity of gob side entry retaining, MN/m2;
P is the body formed rear initial stage compressive strength of roadside support, MPa;
K is safety factor, gets K=1.3.
Getting obturation initial stage compressive strength is 2.8MPa, and the Support Resistance substitution (3-5) according to going out above, can obtain
In the present embodiment, body of wall width is calculated as 2.69m, and every buttress filling length is 5m.
Described in each, to strengthen anchor pole 11 long be 1800mm to top board, and being wherein embedded in part in described back long is 700mm, and in same row, adjacent two described top boards are strengthened anchor poles 11 and the described top board of two rows and strengthened distance between anchor pole 11 all between 900mm.
Described in each, to strengthen anchor pole 12 long be 2200mm to base plate, and being wherein embedded in part in described roadway floor long is 1300mm, in same row adjacent two described base plates strengthen anchor poles 12 and between distance be 1500mm.
In same row, two described distances of moving towards between 10 of screw-thread steel and two row are 900mm.
Distance in same row or same row between adjacent two described tendencies anchor pole 8 through walls is 1500mm; Two ends exposed portions serve is long is 30mm.
Before adopting pallet and nut to coordinate with described helicitic texture described channel-section steel 13 is fixed, to described tendency anchor pole 8 through walls, apply the initial pretightning force between 50KN.
Wherein, described each concrete value can be adjusted in utility model content any numerical value within the scope of each as required.
Other are with embodiment 2.
A fill method for the three-dimensional solidifying fills wall body structure of gob side entry retaining, comprises the steps:
(1) first downhole gangue directly after belt conveyor is transported to downhole crushed chamber fragmentation, forms suitable particle diameter and is less than the spoil of 10～30mm and prepares gangue concrete;
(2) along edge, goaf, make a call to two row's top boards and strengthen anchor pole and base plate reinforcement anchor pole;
(3) set up filling template, the position of filling template, depending on filled wall width, is set up and is moved towards screw-thread steel and tendency anchor pole through walls in template;
(4) gangue concrete being uniformly mixed is filled in filling template;
(5) solidify the described template of rear dismounting, channel-section steel is fixed on the tendency of exposing anchor pole through walls, by pallet and nut, channel-section steel and anchor pole are applied to pretightning force; Complete a buttress filled wall stowing operation;
(6) according to pushing to adopt progress, repeat above-mentioned steps, complete the gob side entry retaining filling operation in whole piece tunnel, adjacent two described filled walls are used the same described screw-thread steel that moves towards.
The distance that two adjacent described top boards of same row or same row are strengthened between anchor pole or base plate reinforcement anchor pole is 900-1500mm, and squeezing into top board or bottom parts long is 700-1300mm;
The described screw-thread steel that moves towards is two row, perpendicular to the side, two of left and right of described wall body, buries underground, and in same row, two described distances of moving towards between screw-thread steel and between two row are 900-1500mm;
Described tendency anchor pole through walls is two rows, described in each, be inclined to anchor pole through walls perpendicular to former and later two sides of described wall body and be applied in described wall body, expose from the both sides, front and back of described wall body at two ends, the two ends that described tendency anchor pole through walls exposes are helicitic texture, and the distance in same row or same row between adjacent two described tendency anchor poles through walls is 900-1500mm; Two ends exposed portions serve is long is 15-30mm;
Expose from the hole of described steel tank at the two ends of described tendency anchor pole through walls, to described tendency anchor pole through walls, applies the initial pretightning force of 50-100KN, adopts pallet and nut to coordinate with described helicitic texture described channel-section steel is fixed on described wall body;
The quantity of described channel-section steel is identical with the columns of described tendency anchor pole through walls, and the described tendency anchor pole through walls in same row is fixed on same described channel-section steel, and the height of described channel-section steel is identical with the height of described wall body.
Above-described embodiment is described preferred embodiment of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (5)
1. the three-dimensional solidifying fills wall body structure of gob side entry retaining, is characterized in that: comprising:
Wall body (9), for rectangular-shaped, its highly same head-room;
A plurality of top boards are strengthened anchor pole (11), and described in each, a part for top board reinforcement anchor pole (11) is embedded in described wall body (9), and a part is embedded in back;
A plurality of base plates are strengthened anchor pole (12), and described in each, a part for base plate reinforcement anchor pole (12) is embedded in described wall body (9), and a part is embedded in roadway floor;
A plurality of screw-thread steels (10) that move towards, a part of moving towards screw-thread steel (10) described in each is embedded in described wall body (9), and a part is exposed from described wall body (9) left and right sides;
A plurality of tendencies anchor pole through walls (8), is inclined to anchor pole through walls (8) described in each whole in described wall body (9), and expose from the both sides, front and back of described wall body (9) at two ends;
A plurality of channel-section steels (13), are provided with the hole passing for described tendency anchor pole through walls (8) on it, retaining mechanism is fixed on described channel-section steel (13) on the metope of described wall body (9) front side and rear side.
2. the three-dimensional solidifying fills wall body structure of gob side entry retaining according to claim 1, it is characterized in that: it is two rows that described top board is strengthened anchor pole (11), described in each, top board is strengthened the long 1800-2200mm of being of anchor pole (11), end face and back perpendicular to described wall body (9), wherein be embedded in the long 700-1300mm of being of part in described back, the distance in same row between adjacent two described top boards reinforcement anchor poles (11) and the two described top board reinforcement anchor poles of row (11) is all between 900-1500mm.
3. the three-dimensional solidifying fills wall body structure of gob side entry retaining according to claim 2, it is characterized in that: it is two rows that described base plate is strengthened anchor pole (12), described in each, base plate is strengthened the long 1800-2200mm of being of anchor pole (12), bottom surface and roadway floor perpendicular to described wall body (9), wherein be embedded in the long 700-1300mm of being of part in described roadway floor, the distance in same row between adjacent two described base plates reinforcement anchor poles (12) and the two described base plate reinforcement anchor poles of row (12) is all between 900-1500mm.
4. the three-dimensional solidifying fills wall body structure of gob side entry retaining according to claim 3, it is characterized in that: the described screw-thread steel (10) that moves towards is two row, side, two of left and right perpendicular to described wall body (9) is buried underground, two described move towards between screw-thread steel (10) and the described distance of moving towards between screw-thread steel (10) of two row is 900-1500mm in same row, described in each, moving towards screw-thread steel (10) length is 1800-2200mm, burying part underground long is 800-1200mm, remaining outside exposed, as moving towards screw-thread steel (10) in the wall body (9) of next buttress filled wall.
5. the three-dimensional solidifying fills wall body structure of gob side entry retaining according to claim 4, it is characterized in that: described tendency anchor pole through walls (8) is two rows, described in each, be inclined to anchor pole through walls (8) perpendicular to former and later two sides of described wall body (9) and be applied in described wall body (9), expose from the both sides, front and back of described wall body (9) at two ends, the two ends that described tendency anchor pole through walls (8) exposes are helicitic texture, and the distance in same row or same row between adjacent two described tendency anchor poles through walls (8) is 900-1500mm; Two ends exposed portions serve is long is 15-30mm; The length of described tendency anchor pole through walls (8) is 1800-2200mm;
On described channel-section steel (13), be provided with the hole passing for described tendency anchor pole through walls (8), expose from described hole at the two ends of described tendency anchor pole through walls (8), adopt pallet and nut to coordinate with described helicitic texture described a plurality of channel-section steels (13) are fixed on the metope of described wall body (9) front side and rear side, the initial pretightning force of described tendency anchor pole through walls (8) after fixing is between 50-100kN;
On each side, described wall body 9 front and back, the quantity of fixing described channel-section steel (13) is identical with the columns of described tendency anchor pole through walls (8), it is upper that described tendency anchor pole through walls (8) in same row is fixed on same described channel-section steel (13), and the height of described channel-section steel (13) is identical with the height of described wall body (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320593979.9U CN203531955U (en) | 2013-09-25 | 2013-09-25 | Gob-side entry retaining three-dimensional reinforced filling wall body structure |
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| CN201320593979.9U CN203531955U (en) | 2013-09-25 | 2013-09-25 | Gob-side entry retaining three-dimensional reinforced filling wall body structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603688A (en) * | 2013-09-25 | 2014-02-26 | 安徽理工大学 | Gob-side entry three-dimensional reinforcement filled wall structure and filling method thereof |
| CN104405441A (en) * | 2014-11-18 | 2015-03-11 | 武汉钢铁(集团)公司 | Detachable filling and retaining wall |
-
2013
- 2013-09-25 CN CN201320593979.9U patent/CN203531955U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603688A (en) * | 2013-09-25 | 2014-02-26 | 安徽理工大学 | Gob-side entry three-dimensional reinforcement filled wall structure and filling method thereof |
| CN104405441A (en) * | 2014-11-18 | 2015-03-11 | 武汉钢铁(集团)公司 | Detachable filling and retaining wall |
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