CN211397619U - Deep well high-pressure ultra-small clear distance roadway passing reinforcing structure - Google Patents
Deep well high-pressure ultra-small clear distance roadway passing reinforcing structure Download PDFInfo
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- CN211397619U CN211397619U CN201922344298.9U CN201922344298U CN211397619U CN 211397619 U CN211397619 U CN 211397619U CN 201922344298 U CN201922344298 U CN 201922344298U CN 211397619 U CN211397619 U CN 211397619U
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Abstract
The utility model discloses a deep well high-pressure ultra-small clear distance roadway-passing reinforcing structure, which comprises a roadway, at least three bottom plate grouting anchoring parts and bottom plate I-shaped steel reinforcing parts; the roadway bottom plate is provided with at least three grouting holes; a bottom plate grouting anchoring piece is correspondingly inserted and fixed in each grouting hole; the bottom plate I-shaped steel reinforcing member is laid on the roadway bottom plate and below the roadway rails and is fixed on the roadway bottom plate by bolts; the base plate I-shaped steel reinforcing member comprises a plurality of transverse I-shaped steels which are transversely arranged and a plurality of longitudinal I-shaped steels which are longitudinally arranged; the transverse I-shaped steel is guided along the width direction of the roadway; the longitudinal I-shaped steel is arranged along the length direction of the roadway; horizontal I-steel sets up with vertical I-steel is crisscross, and horizontal I-steel frame establishes at the top of vertical I-steel, the utility model discloses, the tunnel is consolidated effectually.
Description
Technical Field
The utility model relates to a colliery tunnel consolidates technical field, specifically is lane reinforced structure is crossed to super little clean distance of deep well high-pressure.
Background
The stress of the deep well high earth pressure soft rock roadway is shown in fig. 1 and fig. 2, the vertical stress generated by the overlying rock-soil layer and the horizontal stress generated by the vertical stress (except the structural stress of a special stratum) are determined, the horizontal stress is determined by the vertical stress and the lateral pressure coefficient, and the lateral pressure coefficient is mainly related to the characteristics of the rock-soil layer, so that the roadway damage deformation is mainly generated by the vertical stress. The top plate directly bears vertical stress to generate sinking, and the side part can be inwardly converged under the influence of horizontal stress.
The base plate is not directly stressed, but it is deformed (base drum), indicating that it is stressed. The stress path is as shown in the figure: according to the rock mechanics theory, the three-dimensional stress state of the surrounding rock of the roadway can be simplified into a two-dimensional stress state, the surrounding rock is sheared and damaged under the action of main stress and secondary stress to form a plastic damage area, the extension fracture surface has a displacement trend after the surrounding rock in the plastic damage area is sheared and damaged, therefore, the direction of the main stress is changed from vertical to the direction of the extension fracture surface, namely, the main stress is changed into the main stress II, and then the upward main stress or the upward main stress with a certain angle is formed below the floor through sequential stress transmission, and further deformation is generated.
If the publication is CN 201620520615.1's reference file, a tunnel slip casting reinforced structure is disclosed, mainly adopted and offered the injected hole on the tunnel surface, and to the downthehole slip casting of slip casting, expand the group maintenance and satisfy the sectional operation requirement in tunnel after the slip casting is consolidated, then establish the slip casting anchor rope and consolidate the tunnel country rock, however, the reinforcement effect of reference file only limits to the surface integration in tunnel together, prevent to have the production of section or broken face, and can not support the main stress who mentions in the above-mentioned content effectively, still can take place the problem of collapsing, it is poor to consolidate the effect.
Under the condition of no external load action, vertical stress is not borne above the drift, so that structural damage cannot occur under the action of no external load; because of bearing horizontal stress, the upper part can generate displacement of two sides.
However, the overlying rock soil layer above the drift is thin and broken, and has no bearing capacity, and when the load is borne above the drift, the load is borne only by the bearing capacity of the supporting structure below the drift, so that the drift section must be reinforced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: the deep well high-pressure ultra-small clear distance roadway-passing reinforcing structure with a good reinforcing effect is provided.
In order to solve the technical problem, the utility model provides a following technical scheme: the deep well high-pressure ultra-small clear distance roadway-passing reinforcing structure comprises a roadway, at least three baseplate grouting anchoring parts and baseplate I-shaped steel reinforcing parts; the roadway bottom plate is provided with at least three grouting holes; a bottom plate grouting anchoring piece is correspondingly inserted and fixed in each grouting hole; the bottom plate I-shaped steel reinforcing member is laid on the roadway bottom plate and below the roadway rails and is fixed on the roadway bottom plate by bolts;
the base plate I-shaped steel reinforcing member comprises a plurality of transverse I-shaped steels which are transversely arranged and a plurality of longitudinal I-shaped steels which are longitudinally arranged; the transverse I-shaped steel is guided along the width direction of the roadway; the longitudinal I-shaped steel is arranged along the length direction of the roadway; the transverse H-shaped steel and the longitudinal H-shaped steel are arranged in a staggered mode, and the transverse H-shaped steel frame is arranged at the top of the longitudinal H-shaped steel.
Grouting the roadway bottom plate; the roadway bottom plate is grouted, loose surrounding rocks and open positions are filled, the loose rock stratum is cemented and broken by using the grout, a complete grouting curtain belt is formed on the periphery of the loose rock stratum and is jointly borne with the surrounding rocks, and the roadway bottom plate has good integrity; paving transverse I-shaped steel and longitudinal I-shaped steel above the roadway bottom plate and below the rails; specifically, 5I-shaped steel beams with the length of 10m and the length of 11# are uniformly paved on the lower layer along the direction of the roadway to form a bedding (the two sides of the roadway are respectively lapped by 2.5m), and 5I-shaped steel beams with the length of 5m and the length of 11# are uniformly paved on the upper layer along the direction vertical to the roadway; effectual turn into the line load in the tunnel scope with the concentration point load, and bottom I-shaped girder steel has played the operation of simple beam, passes lane section load with the part and shifts to passing lane section both sides.
Preferably, the middle bottom plate grouting anchoring piece is vertically inserted into the bottom plate of the roadway, and the other two bottom plate grouting anchoring pieces are symmetrical to the direction perpendicular to the bottom plate of the roadway at an angle of 15 degrees and expand towards the direction far away from the center position of the bottom plate of the roadway.
Preferably, the bottom plate grouting anchoring piece comprises an adjusting nut, a base plate, a grout stop plug, an anchor rod body and an anchor head; the anchor head is fixed at one end of the anchor rod body; a threaded groove is formed in the body at the other end of the anchor rod body; the grout stopping plug is sleeved on a section of the rod body of the anchor rod body with a thread groove; and the adjusting nut is fixed on one side of the grout stopping plug, which is far away from the anchor head, through the backing plate.
Preferably, a circle of integrally formed locking grains is further fixed on the anchor head.
Through the increase and the inside friction degree of bottom plate, and then the reinforcing effect of reinforcing anchor head.
Preferably, a wood point pile for supporting is arranged between the center line of the roadway top plate in the length direction and the center line of the roadway bottom plate in the length direction; the wood point piles are arranged at equal intervals along the length direction.
Preferably, a plurality of U-shaped sheds spliced at the ends are erected on the roadway roof; the wood point piles are fixed on the shed beams of the U-shaped shed through bolts; the distance between every two adjacent wood point piles is equal to the distance between every two adjacent U-shaped sheds.
The wood point piles support the top plate of the roadway, so that the whole roadway is directly supported and protected, and the reinforcing effect is good.
Preferably, a row of T-shaped steel belt beams are correspondingly constructed at the shoulder sockets on the two sides of the roadway at an angle.
A suspension beam system is formed by the T-shaped steel strip beam and the U-shaped shed beam of the roadway, so that the bearing capacity of the roadway roof is enhanced, and the subsidence of the roof is reduced.
Preferably, the transverse I-shaped steel and the longitudinal I-shaped steel are fixed by spot welding.
Grouting the roadway bottom plate; the roadway bottom plate is grouted, loose surrounding rocks and open positions are filled, the loose rock stratum is cemented and broken by using the grout, a complete grouting curtain belt is formed on the periphery of the loose rock stratum and is jointly borne with the surrounding rocks, and the roadway bottom plate has good integrity; paving transverse I-shaped steel and longitudinal I-shaped steel above the roadway bottom plate and below the rails; specifically, 5I-shaped steel beams with the length of 10m and the length of 11# are uniformly paved on the lower layer along the direction of the roadway to form a bedding (the two sides of the roadway are respectively lapped by 2.5m), and 5I-shaped steel beams with the length of 5m and the length of 11# are uniformly paved on the upper layer along the direction vertical to the roadway; the load of a concentrated point is effectively converted into the load within the roadway range, the bottom layer I-shaped steel beam plays a role in simply supporting the beam, and part of the load of the roadway passing section is transferred to two sides of the roadway passing section; constructing a row of T-shaped steel belt beams at the corresponding positions of shoulder pits on two sides of the roadway at an angle of 15 degrees respectively for reinforcement; a suspension beam system is formed by the T-shaped steel belt beam and the U-shaped shed beam of the roadway, so that the bearing capacity of the top plate of the roadway is enhanced, and the sinking amount of the top plate is reduced; finally, connecting a row of wood point columns at the center of the top plate corresponding to the roadway, wherein the wood point columns are pine logs with the diameter not less than 300mm, and the distance between the wood point columns is the same as that between U-shaped sheds of the roadway and is 400mm (the point columns are connected to the shed beams of the U-shaped sheds); the support function is directly realized on the roadway passing section; the reinforcing scheme of grouting the roadway bottom plate, paving a bottom plate I-shaped steel reinforcing member on the bottom plate, driving a T-shaped steel strip beam into a shoulder pit and driving a top plate wood connecting point column has good effect, the moving-close amount of the top plate and the bottom plate is 0mm, and the moving-close amounts of two sides are also in a normal range; the roadway of the ultra-short clean rock pillar is reinforced by adopting a reinforcing scheme of grouting a bottom plate, paving a bottom plate I-shaped steel reinforcing member on the bottom plate and driving a T-shaped steel strip beam and a top plate wood connecting point pillar into a shoulder pit, so that the ultra-short clean rock pillar can bear higher load.
Compared with the prior art, the beneficial effects of the utility model are that:
A. grouting on a tunnel bottom plate, inserting a bottom plate grouting anchoring piece, and paving criss-cross I-shaped steel on the top of the bottom plate grouting anchoring piece, so that a concentrated point load is effectively converted into a line load in a tunnel range, the bottom layer I-shaped steel beam plays a role in simply supporting a beam, part of load passing through a tunnel section is transferred to two sides of the tunnel passing section, and the reinforcing effect is good;
B. the wood point piles support the top plate of the roadway, so that the whole roadway is directly supported and protected, and the reinforcing effect is good; a suspension beam system is formed by the T-shaped steel strip beam and the U-shaped shed beam of the roadway, so that the bearing capacity of the roadway roof is enhanced, and the subsidence of the roof is reduced.
Drawings
FIG. 1 is a schematic view of the overall stress of a roadway in the background art of the present invention;
FIG. 2 is a schematic diagram of the stress of the roadway floor in the background art of the present invention;
fig. 3 is a front sectional view of a roadway in an embodiment of the present invention;
FIG. 4 is a layout diagram of a base plate I-steel reinforcement member according to an embodiment of the present invention;
fig. 5 is an installation diagram of the bottom plate grouting anchoring member in the embodiment of the present invention.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present invention by those skilled in the art, the technical solutions of the present invention will now be further described with reference to the drawings attached to the specification.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Examples
Referring to fig. 3, the embodiment discloses a deep well high-pressure ultra-small clear distance roadway-passing reinforcing structure, which comprises a roadway 1, at least three bottom plate grouting anchoring parts 4 and bottom plate i-shaped steel reinforcing parts 5. And at least three grouting holes are formed in the bottom plate of the roadway 1. And a bottom plate grouting anchoring piece 4 is correspondingly inserted and fixed in each grouting hole. The base plate I-shaped steel reinforcing member 5 is paved on a base plate of the roadway 1 and under a rail of the roadway 1, and is fixed on the base plate of the roadway 1 by bolts.
Referring to fig. 4, the floor i-steel reinforcement 5 includes a plurality of transverse i-steels 51 arranged in a transverse direction and a plurality of longitudinal i-steels 52 arranged in a longitudinal direction. The transverse I-shaped steel 51 is guided along the width direction of the roadway 1. The longitudinal I-shaped steel 52 is arranged along the length direction of the roadway 1. The transverse I-shaped steel 51 and the longitudinal I-shaped steel 52 are arranged in a staggered mode, the transverse I-shaped steel 51 is erected at the top of the longitudinal I-shaped steel 52, and spot welding is conducted through a welding machine for fixing.
Grouting the bottom plate of the roadway 1; grouting a bottom plate of the roadway 1, filling loose surrounding rocks and open places, cementing and breaking the loose rock stratum by using slurry, forming a complete grouting curtain belt on the periphery of the broken loose rock stratum, and jointly bearing the grouting curtain belt and the surrounding rocks together, so that the roadway 1 has good integrity; paving transverse I-beams 51 and longitudinal I-beams 52 above the bottom plate of the roadway 1 and below the rails; specifically, 5I-shaped steel beams with the length of 10m and the length of 11# are uniformly paved on the lower layer along the direction of the roadway 1 to form a bedding (the two sides of the roadway 1 are respectively lapped by 2.5m), and 5I-shaped steel beams with the length of 5m and the length of 11# are uniformly paved on the upper layer along the direction vertical to the roadway 1; effectual turn into the line load in the tunnel scope with the concentration point load, and bottom I-shaped girder steel has played the operation of simple beam, passes lane section load with the part and shifts to passing lane section both sides.
Referring to fig. 3, the middle bottom plate grouting anchoring member 4 is vertically inserted into the bottom plate of the roadway 1, and the other two bottom plate grouting anchoring members 4 are symmetrical to the direction perpendicular to the bottom plate of the roadway 1 at an angle of 15 degrees and expand in the direction away from the center of the bottom plate of the roadway 1.
Referring to fig. 5, the bottom grouting anchor 4 includes an adjusting nut 41, a backing plate 42, a grout stop plug 43, an anchor rod body 44 and an anchor head 46. The anchor head 46 is secured to one end of the anchor shaft 44. The other end of the anchor rod body 44 is provided with a threaded groove. The grout stop plug 43 is sleeved on a section of the shank of the anchor shank 44 with a thread groove. The adjusting nut 41 is fixed on the side of the grout stop plug 43 away from the anchor head 46 by a backing plate 42.
A ring of integrally formed locking threads 45 is also fixed on the anchor head 46.
The reinforcing effect of the anchor head 46 is enhanced by increasing the degree of friction with the interior of the base plate.
Referring to fig. 3, a wood point pile 2 for supporting is installed between the center line of the roadway 1 in the length direction of the top plate and the center line of the roadway 1 in the length direction of the bottom plate. The wood point piles 2 are arranged at equal intervals along the length direction.
And a plurality of U-shaped sheds (not shown) spliced in end are erected on the top plate of the roadway 1. The wood point piles 2 are fixed on the shed beams of the U-shaped shed through bolts. The distance between every two adjacent wood point piles 2 is equal to the distance between every two adjacent U-shaped sheds.
The wood point piles 2 support a roadway top plate, the whole roadway is directly supported and protected, and the reinforcing effect is good.
Referring to fig. 3, a row of T-shaped steel strip beams 3 are constructed at shoulder sockets on both sides of the roadway 1 at an angle of 15 degrees.
A suspension beam system is formed by the T-shaped steel strip beam 3 and the U-shaped shed beam of the roadway 1, so that the bearing capacity of the top plate of the roadway 1 is enhanced, and the sinking amount of the top plate is reduced.
The working principle of the embodiment is as follows: grouting the bottom plate of the roadway 1; grouting a bottom plate of the roadway 1, filling loose surrounding rocks and open places, cementing and breaking the loose rock stratum by using slurry, forming a complete grouting curtain belt on the periphery of the broken loose rock stratum, and jointly bearing the grouting curtain belt and the surrounding rocks together, so that the roadway 1 has good integrity; paving transverse I-beams 51 and longitudinal I-beams 52 above the bottom plate of the roadway 1 and below the rails; specifically, 5I-shaped steel beams with the length of 10m and the length of 11# are uniformly paved on the lower layer along the direction of the roadway 1 to form a bedding (the two sides of the roadway 1 are respectively lapped by 2.5m), and 5I-shaped steel beams with the length of 5m and the length of 11# are uniformly paved on the upper layer along the direction vertical to the roadway 1; the load of a concentrated point is effectively converted into the load within the roadway range, the bottom layer I-shaped steel beam plays a role in simply supporting the beam, and part of the load of the roadway passing section is transferred to two sides of the roadway passing section; constructing a row of T-shaped steel belt beams 3 at the corresponding positions of shoulder pits on two sides of the roadway 1 at an angle of 15 degrees respectively for reinforcement; a suspension beam system is formed by the T-shaped steel strip beam 3 and a U-shaped shed beam of the roadway 1, so that the bearing capacity of a top plate of the roadway 1 is enhanced, and the sinking amount of the top plate is reduced; finally, a row of wood point columns 2 are connected to the center of the top plate corresponding to the roadway 1, the wood point columns 2 are pine trees with the diameter not smaller than 300mm, the distance between the wood point columns 2 is the same as that between U-shaped sheds of the roadway 1, and the distance between the wood point columns is 400mm (the point columns are connected to the U-shaped shed beams); the support function is directly realized on the roadway passing section; the reinforcing scheme of grouting the bottom plate of the roadway 1, paving the bottom plate I-shaped steel reinforcing member 5 on the bottom plate, driving the T-shaped steel strip beam 3 into the shoulder pit and driving the top plate wood connecting point column 2 into the shoulder pit has good effect, the approach quantity of the top plate and the bottom plate is 0mm, and the approach quantities of the two sides are within a normal range; the roadway 1 of the ultra-short clean rock pillar is reinforced by adopting a reinforcing scheme of bottom plate grouting, bottom plate upper laying H-shaped steel reinforcing members 5, shoulder pit driving-in T-shaped steel strip beams 3 and top plate wood connecting point pillars 2, and can bear higher load.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The above embodiments only show the embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements all belong to the protection scope of the present invention.
Claims (8)
1. Deep well high-pressure ultra-small clear distance roadway-passing reinforcing structure is characterized in that: the grouting anchor comprises a roadway, at least three bottom plate grouting anchors and bottom plate I-shaped steel reinforcements; the roadway bottom plate is provided with at least three grouting holes; a bottom plate grouting anchoring piece is correspondingly inserted and fixed in each grouting hole; the bottom plate I-shaped steel reinforcing member is laid on the roadway bottom plate and below the roadway rails and is fixed on the roadway bottom plate by bolts;
the base plate I-shaped steel reinforcing member comprises a plurality of transverse I-shaped steels which are transversely arranged and a plurality of longitudinal I-shaped steels which are longitudinally arranged; the transverse I-shaped steel is guided along the width direction of the roadway; the longitudinal I-shaped steel is arranged along the length direction of the roadway; the transverse H-shaped steel and the longitudinal H-shaped steel are arranged in a staggered mode, and the transverse H-shaped steel frame is arranged at the top of the longitudinal H-shaped steel.
2. The deep well high-earth pressure ultra-small clearance roadway reinforcing structure according to claim 1, characterized in that: the middle bottom plate grouting anchoring piece is vertically inserted into the bottom plate of the roadway, the other two bottom plate grouting anchoring pieces are symmetrical to the direction perpendicular to the bottom plate of the roadway at an angle of 15 degrees and expand towards the direction far away from the center of the bottom plate of the roadway.
3. The deep well high-earth pressure ultra-small clearance roadway reinforcing structure according to claim 1, characterized in that: the bottom plate grouting anchoring piece comprises an adjusting nut, a base plate, a grout stopping plug, an anchor rod body and an anchor head; the anchor head is fixed at one end of the anchor rod body; a threaded groove is formed in the body at the other end of the anchor rod body; the grout stopping plug is sleeved on a section of the rod body of the anchor rod body with a thread groove; and the adjusting nut is fixed on one side of the grout stopping plug, which is far away from the anchor head, through the backing plate.
4. The deep well high-pressure ultra-small clearance roadway reinforcing structure according to claim 3, wherein: and a circle of integrally formed locking grains are further fixed on the anchor head.
5. The deep well high-earth pressure ultra-small clearance roadway reinforcing structure according to claim 1, characterized in that: wood point piles for supporting are arranged between the center line of the roadway top plate in the length direction and the center line of the roadway bottom plate in the length direction; the wood point piles are arranged at equal intervals along the length direction.
6. The deep well high-earth pressure ultra-small clearance roadway reinforcing structure according to claim 5, wherein: a plurality of U-shaped sheds spliced at the ends are erected on the roadway roof; the wood point piles are fixed on the shed beams of the U-shaped shed through bolts; the distance between every two adjacent wood point piles is equal to the distance between every two adjacent U-shaped sheds.
7. The deep well high-earth pressure ultra-small clearance roadway reinforcing structure according to claim 1, characterized in that: and constructing a row of T-shaped steel belt beams at the corresponding angle of shoulder pits on two sides of the roadway.
8. The deep well high-earth pressure ultra-small clearance roadway reinforcing structure according to claim 1, characterized in that: and the transverse I-shaped steel and the longitudinal I-shaped steel are fixed by spot welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922344298.9U CN211397619U (en) | 2019-12-24 | 2019-12-24 | Deep well high-pressure ultra-small clear distance roadway passing reinforcing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922344298.9U CN211397619U (en) | 2019-12-24 | 2019-12-24 | Deep well high-pressure ultra-small clear distance roadway passing reinforcing structure |
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| CN211397619U true CN211397619U (en) | 2020-09-01 |
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| CN201922344298.9U Active CN211397619U (en) | 2019-12-24 | 2019-12-24 | Deep well high-pressure ultra-small clear distance roadway passing reinforcing structure |
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| CN (1) | CN211397619U (en) |
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