CN111485890B - Tunneling method of roadway - Google Patents
Tunneling method of roadway Download PDFInfo
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- CN111485890B CN111485890B CN202010270956.9A CN202010270956A CN111485890B CN 111485890 B CN111485890 B CN 111485890B CN 202010270956 A CN202010270956 A CN 202010270956A CN 111485890 B CN111485890 B CN 111485890B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The present disclosure relates to a tunneling method of a roadway, including: planning: dividing a roadway (11) into a plurality of roadway sections which are connected in sequence, and designing the spatial position and the extending direction of each roadway section on a rock body (1) in advance; punching: a plurality of water detection holes (12) are formed in the upper side of the spatial position of the current roadway section, each water detection hole extends along the extension direction, the length of each water detection hole is equal to that of the current roadway section, and the water detection holes are arranged at intervals along the transverse direction of the current roadway section; advance support: inserting a reinforcing steel bar section (2) with the diameter smaller than that of each water detection hole into each water detection hole, and then pumping concrete slurry into a gap between each reinforcing steel bar section and each water detection hole; tunneling: after the concrete grout is solidified, tunneling a current roadway section on a rock mass; and if the current roadway section is the roadway section which is not the last position, returning to the punching step to carry out the next roadway section. The tunneling method can effectively improve the pre-support effect of the roadway and improve the safety and the construction efficiency of roadway construction.
Description
Technical Field
The disclosure relates to the technical field of ore mining, in particular to a tunneling method for a roadway.
Background
The mining of ore needs to design a series of tunnels to the rock mass, and in the tunnelling in-process in tunnel, can meet with or pass various geology, for example, when the tunnel meets or need pass the fault fracture area, the rock mass wherein is because comparatively soft for the tunnel takes place collapsing of roof easily and risks, especially when the fault fracture area contains water, has aggravated the broken degree of rock mass, thereby has greatly influenced constructor's safety and the efficiency of construction in tunnel. In the related art, advance support, namely advance support, is generally carried out on a roadway by adopting a mode of an advance pipe shed or an advance small pipe, however, when the roadway meets or needs to pass through a very-broken zone or the broken zone contains water, the advance support effect by utilizing the mode of the pipe shed and the advance small pipe is limited, and advance water exploration work is required to be carried out in advance when the broken zone contains water, so that the construction cost of the roadway is greatly increased, and the construction efficiency of the roadway is influenced.
Disclosure of Invention
The invention aims to provide a tunneling method of a roadway, which can effectively improve the pre-support effect of the roadway and improve the safety and the construction efficiency of roadway construction.
In order to achieve the above object, the present disclosure provides a tunneling method of a roadway, including: planning: dividing a roadway into a plurality of roadway sections which are connected in sequence, and designing the spatial position and the extending direction of each roadway section on a rock body in advance; punching: a plurality of water detection holes are formed in the upper side of the spatial position of the current roadway section, each water detection hole extends along the extending direction, the length of each water detection hole is equal to that of the current roadway section, and the water detection holes are arranged at intervals along the transverse direction of the current roadway section; advance support: inserting a reinforcing steel bar section with the diameter smaller than that of the water detection hole into each water detection hole, and pumping concrete slurry into a gap between the reinforcing steel bar section and the water detection hole; tunneling: after the concrete grout is solidified, tunneling a current roadway section on the rock mass; and if the current roadway section is the roadway section which is not the last position, returning to the punching step to carry out the next roadway section.
Optionally, the tunneling method includes:
expanding and chiseling: and after the tunneling step is completed and before the punching step is returned, opening a working space for the punching step at the tail end part or the front side of the current roadway section.
Optionally, the length of rebar is made of ribbed rebar.
Optionally, the concrete slurry is a mixture of cement slurry and water glass, and the volume ratio of the cement slurry to the water glass is 7/10-2/1.
Optionally, in the punching step, the water detection hole corresponding to each roadway section extends in the extending direction of the current roadway section from back to front gradually and upwards in an inclined manner.
Optionally, in the advance support step: a bracket is fixed on each steel bar section so as to keep a preset distance between the outer surface of the steel bar section and the hole wall of the water detection hole; or, a support is placed in the water detection hole, and then a steel bar section is inserted into the water detection hole and placed on the support, so that a preset distance is kept between the outer surface of the steel bar section and the hole wall of the water detection hole.
Optionally, the diameter of the water detection hole is at least one time larger than the diameter of the steel bar section.
Optionally, in the tunneling step, blasting layer by layer from the center of the current roadway section outwards, and the tunneling step includes:
a plurality of blast holes are formed in a rock body corresponding to a current roadway section to be tunneled along the extending direction, and each blast hole comprises a plurality of cut holes positioned in the central part, a plurality of auxiliary holes surrounding the outer layers of all the cut holes and a plurality of peripheral holes surrounding the outer layers of all the auxiliary holes; filling explosive in the cut holes and blasting; filling explosives in the auxiliary holes and blasting; and filling explosives in the peripheral holes and blasting.
Optionally, the plurality of cut holes are arranged in at least two rows in a height direction of the rock body, and two adjacent rows of cut holes extend gradually closer from front to back.
Optionally, in each row of the cut holes, any two adjacent cut holes extend from front to back gradually and closely.
According to the technical scheme, the tunneling method of the roadway provided by the disclosure comprises the steps of planning, planning the spatial position and the extending direction of each preset roadway section in a rock mass, wherein the foremost end of the headmost roadway section is exposed to the outside, namely the roadway section for tunneling, drilling after the planning step, forming a plurality of water detection holes on the upper side of the spatial position of the current roadway section for advance water detection, the length of the water detection holes along the extending direction of the roadway section is equal to that of the roadway section, so that the water detection range of the water detection holes is maximized, the water detection holes are combined with a steel bar section and concrete slurry in the advance support step to support the whole current roadway section, performing advance support step after the drilling step, inserting a steel bar section with the diameter smaller than that of the water detection holes into each water detection hole, and enabling the concrete slurry to fill the gap between the steel bar section and the water detection holes, and the concrete grout can be firmly connected with the rock mass and the steel bar section after being solidified, so that the advance support effect on the current roadway section is improved, collapse of the rock mass in the tunneling process of the current roadway section is avoided, and the current roadway section is tunneled on the rock mass after the concrete grout is solidified.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
fig. 1 is a flowchart of a tunneling method of a roadway according to an embodiment of the present disclosure;
fig. 2 is a schematic front view of a rock body in a tunneling method of a roadway according to an embodiment of the present disclosure; wherein the water exploring hole, the pre-digging roadway and the pillar are shown;
fig. 3 is a schematic side view of a rock mass in a tunneling method of a roadway according to an embodiment of the present disclosure;
fig. 4 is another schematic side view of a rock mass in a method of driving a roadway provided according to an embodiment of the present disclosure;
fig. 5 is a schematic view of a roadway in a tunneling method of the roadway provided according to an embodiment of the present disclosure; in which cut holes, auxiliary holes and peripheral holes are shown;
FIG. 6 is a cross-sectional view of FIG. 5;
fig. 7 is a schematic longitudinal sectional view of fig. 5.
Description of the reference numerals
1-rock mass, 11-roadway, 12-water detecting hole, 131-cut hole, 132-auxiliary hole, 133-peripheral hole, 2-reinforcing steel bar section and 100-operation space.
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, in the case where no opposite explanation is made, the use of the directional words such as "upper, lower, left, and right" is defined based on fig. 2, and specifically, with reference to the drawing direction of fig. 2, "inner and outer" means being defined based on the lane segment, specifically, the side near the lane segment is inner, and vice versa, "first and second" are for distinguishing one element from another element, and have no order or importance. Further, the following description refers to the accompanying drawings, in which like reference numerals designate the same or similar elements, and the disclosure is not limited thereto.
According to an embodiment of the present disclosure, there is provided a tunneling method of a roadway, as shown in fig. 1 to 4, the tunneling method including: planning: dividing a roadway 11 into a plurality of roadway sections which are connected in sequence, and designing the spatial position and the extending direction of each roadway section on the rock mass 1 in advance; punching: a plurality of water detection holes 12 are formed in the upper side of the spatial position of the current roadway section, each water detection hole 12 extends along the extending direction, the length of each water detection hole is equal to that of the current roadway section, and the water detection holes 12 are arranged at intervals along the transverse direction (the left and right direction shown in fig. 2) of the current roadway section; advance support: inserting a reinforcing steel bar section 2 with the diameter smaller than that of each water detection hole 12 into each water detection hole 12, and pumping concrete slurry into a gap between each reinforcing steel bar section 2 and each water detection hole 12; tunneling: after the concrete grout is solidified, tunneling a current roadway section on the rock mass 1; and if the current roadway section is the roadway section which is not the last position, returning to the punching step to carry out the next roadway section.
Through the technical scheme, in the tunneling method of the roadway provided by the disclosure, firstly, a planning step is carried out, the spatial position and the extending direction of each preset roadway section in a rock mass 1 are planned, wherein the foremost end of the headmost roadway section is exposed to the outside, namely, the roadway section for tunneling is the first roadway section, a punching step is carried out after the planning step, a plurality of water detection holes 12 are arranged on the upper side of the spatial position of the current roadway section for carrying out advance water detection, the length of the water detection holes 12 along the extending direction of the roadway section is equal to that of the roadway section, so that the water detection range of the water detection holes 12 is maximized, meanwhile, the water detection holes are combined with a steel bar section 2 and concrete slurry in the advance support step to support the whole current roadway section, the advance support step is carried out after the punching step, a steel bar section 2 with the diameter smaller than that of the water detection holes 12 is inserted into each water detection hole 12, and the concrete slurry can fill in the gap between the steel bar section 2 and the water detection holes 12, and the rock mass 1 and the reinforcing steel bar section can be stably connected together after the concrete slurry is solidified, so that the advance support effect on the current roadway section is improved, collapse of the rock mass 1 in the tunneling process of the current roadway section is avoided, and after the concrete slurry is solidified, the current roadway section is tunneled on the rock mass 1.
It should be noted that, if the current roadway section is a non-end roadway section, returning to the punching step to perform the next roadway section, where performing the next roadway section means repeating the punching step, the advance support step, and the tunneling step, so as to form the next roadway section, and if the current roadway section is an end roadway section, the tunneling is finished, and the entire roadway 11 is formed. In addition, the advance water detection and advance support refer to the steps before the current roadway section is not excavated, the advance support can be understood as the advance support, and the advance water detection can also be used for guiding water out of an ore body through the water detection holes 12 when the advance water detection contacts with a water-bearing stratum, otherwise, water guide is not needed. Further, the present disclosure does not limit the concrete composition of the concrete slurry, and the present disclosure will be described in detail in the following embodiments.
It should also be noted that a plurality of water detecting holes 12 may be arranged in an arch shape, so as to form an arch support with the concrete grout and the steel bar section 2, and further improve the supporting effect.
According to some embodiments, referring to fig. 3 and 4, in the punching step, the water detection hole 12 corresponding to each roadway section extends in the extending direction of the current roadway section from back to front and gradually inclines upwards. Like this, when visiting the hole 12 and contacting the aquifer, the intraformational hydroenergy of aquifer can be by preceding backward downflow, through the action of gravity of self, derives the ore body sooner to accelerate drainage speed, guarantee that the time limit for a project in whole tunnel can not lag. Here, the inclination angle of the water detecting hole 12 is small, for example, 1 °, and the water flow turbulence with too large inclination angle is avoided.
According to the specific implementation mode of the disclosure, the tunneling method comprises the following steps: expanding and chiseling: after the tunneling step is completed and before the punching step is returned, an operation space 100 for the punching step is opened at the tail end part or the front side of the current roadway section, so that the operation space 100 can provide a space for punching the next roadway section of the current roadway section, namely, punching the water detection hole 12, and provide a space for inserting the steel bar section into the water detection hole 12, and continuous penetration of a plurality of roadway sections is realized. Here, the end portion of the current tunnel section refers to an end portion adjacent to the next tunnel section, and the front side of the current tunnel section is defined based on the constructor, specifically, with the direction that the constructor faces as front, and vice versa.
According to some embodiments, referring to fig. 3, an action space 100 for the punching step may be provided at a tip portion of the current tunnel segment, where the tip portion of the current tunnel segment may be upwardly recessed to form a first avoidance groove, a top wall of the first avoidance groove is higher than a top wall of the water detection hole of the next tunnel segment, the work space 100 may be a space defined by the first avoidance groove, and the water detection hole may be extended by gradually inclining upwards from back to front, thereby avoiding a portion of the reinforcement section on an upper portion of the current tunnel segment from being punched when the first avoidance groove is provided, and thus enabling the steps of opening the water detection hole 12 of each tunnel segment and inserting the reinforcement section 2 into the water detection hole 12 when the continuous excavation of the plurality of tunnel segments is implemented.
It should be noted that the direction indicated by the arrow in fig. 3 is the heading direction or the extending direction of the current roadway section. According to some embodiments, fig. 3 corresponds to the step of punching, the water detection hole 12 corresponding to each roadway section extends in the extending direction of the current roadway section in a manner of gradually inclining upwards from back to front.
According to some embodiments, referring to fig. 4, an action space for the punching step may be opened at the front side of the current tunnel section, where the rock mass 1 at the front side of the current tunnel section may be upwardly recessed to form a second avoidance groove, a top wall of the two avoidance grooves itself is higher than a top wall of the water detection hole 12 of the next tunnel section, and the working space 100 includes a space defined by the second avoidance groove, so that the opening of the water detection hole of each tunnel section and the insertion of the steel bar section 2 into the water detection hole 12 can be further achieved when the continuous excavation of a plurality of tunnel sections is achieved. It should be noted that the direction indicated by the arrow in fig. 3 is the heading direction or forward direction of the current roadway section.
According to an embodiment of the present disclosure, the rebar segment 2 can be made of ribbed rebar. Here, the contact area of ribbed steel bar can increase and concrete grout for the connection of the two is more firm, thereby can further improve the advance support effect to current tunnel section. According to some embodiments, the rebar segment 2 can be a threaded steel.
According to an embodiment of the present disclosure, the concrete slurry may be a mixture of cement slurry and water glass (an aqueous solution of sodium silicate), and the cement slurry is a mixture of cement and water, wherein a volume ratio of the cement slurry to the water glass is 7/10 to 2/1. Like this, the solidification of concrete thick liquid can be accelerated to the existence of water glass, and foretell ratio can also guarantee that the concrete thick liquid can not be too thin or thick, and then can guarantee the normal flow of concrete thick liquid, and it is limited to prevent to solidify the effect when too thin, and the velocity of flow is slow when thick. According to a following embodiment, the volume ratio of the cement paste to the water glass may be 1: 0.7. in the above-described cement slurries, the weight ratio of water to cement may be 1:1, according to some embodiments, and the present disclosure is not limited thereto. According to some embodiments, when the concrete grout is pumped into the gap between the steel bar section 2 and the water detection hole 11, water glass is firstly prepared, then the cement paste is prepared, then the cement paste and the water glass are mixed according to the volume ratio of 7/10-2/1, so that the concrete grout is prepared, and then the concrete grout is pumped into the gap between the steel bar section 2 and the water detection hole 11, or the concrete grout is pumped into the gap after being prepared, namely before entering the gap. Of course, cement paste and water glass may also enter the gap for in-situ mixing, which is not limited by the present disclosure.
According to the specific embodiment of the disclosure, in the advance support step, a support is fixed on each steel bar section 2, so that a preset distance is kept between the outer surface of each steel bar section 2 and the hole wall of the water detection hole 12, thus, concrete slurry can surround the steel bar sections 2, poor support effect at the position caused by contact of the steel bar sections 2 and the hole wall is avoided, and the support fixed on the steel bar sections 2 can better and more stably keep the preset distance between the outer surface of each steel bar section 2 and the inner wall of the water detection hole 11; or, place the support in surveying the water hole 12, later insert reinforcing bar section 2 and survey in the water hole 12 and place on the support wherein to make the surface of reinforcing bar section 2 and the pore wall of surveying water hole 12 between keep predetermineeing the distance, like this, also can realize that the concrete thick liquid encircles reinforcing bar section 2, the support is placed in surveying the installation that can make things convenient for reinforcing bar section 2 and support in the water hole simultaneously.
According to the specific embodiment of this disclosure, the diameter of exploring water hole 12 is greater than reinforcing bar section 2 diameter at least one time, like this, has greatly improved the quality that is located the concrete thick liquid between the surface of reinforcing bar section 2 and the pore wall of exploring water hole 12, has greatly improved the effect of strutting to current tunnel section.
According to the specific embodiment of the present disclosure, referring to fig. 5, in the tunneling step, blasting layer by layer from the center of the current roadway section outwards, the tunneling step includes: a plurality of blast holes are formed in the rock body 1 corresponding to the current roadway section 11 to be tunneled along the extending direction, and the plurality of blast holes comprise a plurality of cut holes 131 positioned in the central part, a plurality of auxiliary holes 132 surrounding the outer layers of all the cut holes 131, and a plurality of peripheral holes 133 surrounding the outer layers of all the auxiliary holes 132; filling explosive in the cut hole 131 and blasting; filling explosive in the auxiliary hole 132 and blasting; explosive charges are filled in the peripheral holes 133 and blasted. Here, the cut hole 131, the auxiliary hole 132, and the peripheral hole 133 are blasted in sequence, so that the blasting from inside to outside realizes the formation of the current tunnel section. Here, the number of the auxiliary holes 132, the cut holes 131, and the peripheral holes 133 and the respective filling amounts are not limited to this disclosure.
Note that, in order to distinguish the cut hole 131, the auxiliary hole 132, and the peripheral hole 133, the present disclosure distinguishes the cut hole 131, the auxiliary hole 132, and the peripheral hole 133 in fig. 3, but this does not represent that the dimensional relationship of the three is as shown in fig. 3.
According to some embodiments, referring to fig. 5 and 6, the plurality of slotted holes 131 are arranged in at least two rows of slotted holes 131 in the height direction of the rock body 1, with two adjacent rows of slotted holes 131 extending progressively closer from front to back. In this way, the two rows of cut holes 131 can be gathered gradually in the front-to-rear direction, so that when the cut holes 131 are blasted, the rock mass surrounded by the auxiliary holes 132 can form a stable free surface or a hole for blasting, and further, a moving space is provided for the blasted rock of the auxiliary holes 132.
According to some embodiments, referring to fig. 5 and 7, in each row of the cut holes 131, any two adjacent cut holes 131 extend gradually closer from front to back. Thus, the rock body can be formed into a cavity after the cut hole 131 is blasted more effectively.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A tunneling method of a roadway is characterized by comprising the following steps:
planning: dividing a roadway (11) into a plurality of roadway sections which are connected in sequence, and designing the spatial position and the extending direction of each roadway section on a rock body (1) in advance;
punching: a plurality of water detection holes (12) are formed in the upper side of the spatial position of the current roadway section, each water detection hole (12) extends along the extending direction, the length of each water detection hole is equal to that of the current roadway section, and the water detection holes (12) are arranged at intervals along the transverse direction of the current roadway section;
advance support: inserting a reinforcing steel bar section (2) with the diameter smaller than that of the water detection hole (12) into each water detection hole (12), and pumping concrete slurry into a gap between each reinforcing steel bar section (2) and each water detection hole (12);
tunneling: after the concrete slurry is solidified, tunneling a current roadway section on the rock body (1);
and if the current roadway section is the roadway section which is not the last position, returning to the punching step to carry out the next roadway section.
2. The tunneling method of a roadway according to claim 1, characterized by comprising:
expanding and chiseling: after the tunneling step is completed and before the boring step is returned, a working space (100) for the boring step is opened at the end portion or the front side of the current roadway section.
3. A method of tunnelling in accordance with claim 1, wherein the lengths of reinforcement (2) are made of ribbed steel.
4. The tunneling method of the roadway according to claim 1, wherein the concrete slurry is a mixture of cement slurry and water glass, and the volume ratio of the cement slurry to the water glass is 7/10-2/1.
5. The method of boring a tunnel according to claim 1, wherein in the boring step, the water detection holes (12) corresponding to each tunnel segment extend in an extending direction of the current tunnel segment so as to be inclined upward from back to front.
6. A method of driving a roadway according to claim 1 wherein in the advance support step:
a bracket is fixed on each steel bar section (2) so as to keep a preset distance between the outer surface of each steel bar section (2) and the wall of the water detection hole (12); alternatively, the first and second electrodes may be,
a support is placed in the water detecting hole (12), and then a steel bar section (2) is inserted into the water detecting hole (12) and placed on the support, so that a preset distance is kept between the outer surface of the steel bar section (2) and the hole wall of the water detecting hole (12).
7. A method of driving a roadway as claimed in claim 1, wherein the diameter of the probe hole (12) is at least one time greater than the diameter of the reinforcing bar section (2).
8. The method of driving a roadway according to claim 1, wherein in the driving step, blasting is performed in layers from the center of a current roadway section outward, and the driving step includes:
a plurality of blast holes are formed in a rock body (1) corresponding to a current roadway section (11) to be tunneled along the extending direction, and the blast holes comprise a plurality of cut holes (131) located in the central part, a plurality of auxiliary holes (132) surrounding the outer layers of all the cut holes (131), and a plurality of peripheral holes (133) surrounding the outer layers of all the auxiliary holes (132);
filling explosive in the cut holes (131) and blasting;
filling explosive in the auxiliary hole (132) and blasting;
and filling explosive in the peripheral holes (133) and blasting.
9. A tunneling method according to claim 8, characterized in that the plurality of cut holes (131) are arranged in at least two rows (131) in the height direction of the rock body (1), and two adjacent rows (131) extend gradually closer from front to rear.
10. The method of driving a roadway according to claim 8, wherein any adjacent two of the cut holes (131) in each row of cut holes (131) extend gradually closer from front to rear.
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| CN202010270956.9A CN111485890B (en) | 2020-04-08 | 2020-04-08 | Tunneling method of roadway |
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| CN202010270956.9A CN111485890B (en) | 2020-04-08 | 2020-04-08 | Tunneling method of roadway |
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| CN114233314A (en) * | 2021-12-08 | 2022-03-25 | 盐城市天勤机械有限公司 | Roadway tunneling method for multiple types of mines |
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| CN105443132A (en) * | 2015-12-02 | 2016-03-30 | 中国建筑第五工程局有限公司 | Construction method of shallow-buried subsurface-excavated cross-shaped cross-strut tunnel |
| CN106837352A (en) * | 2017-01-22 | 2017-06-13 | 中南大学 | Fault belt surrounding rock tunnel construction method |
| CN108166981A (en) * | 2017-12-31 | 2018-06-15 | 中铁十九局集团第二工程有限公司 | Tunnel soft rock large deformation section construction technology |
| CN109440794A (en) * | 2018-12-19 | 2019-03-08 | 中铁十四局集团有限公司 | A kind of fine method of disposal suitable for shallow embedding subway shield tunnel construction Tunnel Karst |
| CN110331981A (en) * | 2019-06-19 | 2019-10-15 | 贵州开磷有限责任公司 | A kind of roadway segmentation system of attack |
| CN110952990A (en) * | 2020-02-26 | 2020-04-03 | 中铁五局集团第一工程有限责任公司 | Construction method for unfavorable geology in high-altitude area tunnel engineering |
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