CN204152517U - A kind of hard rock tunnel non-explosive excavation face partitioned organization - Google Patents
A kind of hard rock tunnel non-explosive excavation face partitioned organization Download PDFInfo
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- CN204152517U CN204152517U CN201420589461.2U CN201420589461U CN204152517U CN 204152517 U CN204152517 U CN 204152517U CN 201420589461 U CN201420589461 U CN 201420589461U CN 204152517 U CN204152517 U CN 204152517U
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Abstract
The utility model relates to a kind of hard rock tunnel non-explosive excavation face partitioned organization, comprise tunnel tunnel face, the perimeter hole that occlusion is overlapping is mutually provided with along described tunnel tunnel face excavation contour line, to form excavation free face, the many rows splitting hole round mutually in parallel or crossing layout is provided with in described face, described splitting hole round is made up of the splitting hole of equidistant arrangement, each row splitting hole round forms a splitting surface, and face is divided into several rhombuses, trapezoidal or leg-of-mutton excavation piecemeal by several splitting surfaces.Non-explosive excavation for hard rock tunnel provides a kind of face excavation partitioned organization, it utilizes the tensile strength of rock and shear strength more than the little characteristic of compressive strength, and comprise at least one face partitioned organization perpendicular to the excavation free face of face, effectively to utilize less splitting power to resist pulling force or the shearing of rock, the rock drawing crack that can realize face and the splitting excavation shearing segmentation.The utility model can improve the non-explosive excavation efficiency of construction of hard rock tunnel and the utilization rate of hole quarrel.
Description
Technical field
The utility model relates to construction of tunnel field, is specifically related to a kind of hard rock tunnel non-explosive excavation face partitioned organization.
Background technology
Hard rock tunnel generally adopts drill bursting construction.Drill bursting construction can cause tunnel surrounding and adjacent structure structure generation blasting vibration, can have a negative impact to tunnel surrounding and adjacent structure structural mechanical property.Meanwhile, blast working also can send noise of blasting, can destroy the human settlement of tunnel perimeter.Even if having employed Controlled blasting technique in blast working, be still difficult to the adverse effect eliminating blasting vibration and noise.Therefore, require strict construction of tunnel for blasting vibration and noise of blasting, drill bursting construction is difficult to engineering demands, needs to adopt non-explosive excavation construction technology.
In existing non-explosive excavation construction technology, the shortcoming that method and tunnel machine method can overcome drilling and blasting method is dug in milling, but milling method of digging generally is useful in soft rock and constructs, large, inefficiency of its hair washing wearing and tearing in hard rock; Tunnel machine method is generally useful in the construction of tunnel that Hard Rock Mass, length of tunnel are longer, tunnel cross-section remains unchanged, and is not suitable for that length is shorter, the construction of tunnel of section variation.Artificial pneumatic pick excavating load and hydraulic impact hammer excavating load, be usually applicable in the constructing tunnel of Soft Mother Rock, and for Hard Rock Mass, its efficiency of construction is lower, and hydraulic impact hammer construction also can produce certain impact shock.There is problem of environmental pollution in expansion agent method, and can cause personal injury to constructor, must wear protective jacket in construction.
Summary of the invention
The utility model makes improvements for above-mentioned prior art, and namely the technical problems to be solved in the utility model is to provide a kind of hard rock tunnel non-explosive excavation face partitioned organization, can improve excavation efficiency, meet the requirement of tunnel perimeter environment to constructing tunnel.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of hard rock tunnel non-explosive excavation face partitioned organization, it is characterized in that, comprise tunnel tunnel face, the perimeter hole that occlusion is overlapping is mutually provided with along described tunnel tunnel face excavation contour line, to form excavation free face, the many rows splitting hole round mutually in parallel or crossing layout is provided with in described face, described splitting hole round is made up of the splitting hole of equidistant arrangement, each row splitting hole round forms a splitting surface, face is divided into several rhombuses by several splitting surfaces, trapezoidal or leg-of-mutton excavation piecemeal.
Further, in described excavation piecemeal, every two splitting surfaces are that the obtuse angle of wide-angle intersects, and comprise at least one excavation free face perpendicular to face, get on, get off to meet, after first periphery in the middle of the requirement of splitting construction order.
Further, oblique and in face middle shaft part mirror-image arrangement splitting hole round is provided with in the middle part of described face, the excavation piecemeal of described face both sides is that face middle shaft part is arranged symmetrically with, the excavation piecemeal at described face top is triangular shape excavation piecemeal, so that adopt artificial pneumatic pick or hydraulic impact hammer to carry out the excavation of last block excavation piecemeal.
Further, the axially bored line in described splitting hole is parallel to each other and perpendicular to described face, the axially bored line of same row's splitting hole round is positioned at same splitting surface plane, the pitch of holes in described same row's splitting hole is less than minimum burden, to guarantee that face can carry out splitting excavation by predetermined splitting surface.
Further, the piecemeal thickness of described excavation piecemeal is identical with the degree of depth of described perimeter hole, and the degree of depth in described splitting hole is equal with total hole depth of several work cycle of described perimeter hole.
Compared with prior art, the utility model has following beneficial effect: the utility model is that the non-explosive excavation of hard rock tunnel provides a kind of face excavation partitioned organization, it utilizes the tensile strength of rock and shear strength more than the little characteristic of compressive strength, the splitting surface adopting synchronous splitting to excavate be wide-angle obtuse angle intersect, and comprise at least one face partitioned organization perpendicular to the excavation free face of face, effectively to utilize less splitting power to resist pulling force or the shearing of rock, the rock drawing crack that can realize face and the splitting excavation shearing segmentation, the efficiency of construction of hard rock tunnel non-explosive excavation and the utilization rate of hole quarrel can be improved simultaneously.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the construction method schematic diagram of the utility model first embodiment.
In figure: 1-excavation contour line, 2-perimeter hole, 3-splitting surface, 4-splitting hole, 5,6,7 ..., 43-excavation point block number and sequence of construction numbering.
Detailed description of the invention
As shown in Figure 1, namely the technical problems to be solved in the utility model is to provide a kind of hard rock tunnel non-explosive excavation face partitioned organization, can improve excavation efficiency, meet the requirement of tunnel perimeter environment to constructing tunnel.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of hard rock tunnel non-explosive excavation face partitioned organization, comprise tunnel tunnel face, the perimeter hole 2 that occlusion is overlapping is mutually provided with along described tunnel tunnel face excavation contour line 1, to form hole wall shape excavation free face, many rows horizontal splitting hole 4 round mutually in parallel or crossing layout and oblique splitting hole 4 round is provided with in described face, each row splitting hole 4 round forms a splitting surface 3, by several splitting surfaces 3, face is divided into several rhombuses (6 ... 8, 10 ... 13, 16 ... 18, 20 ... 23, 26 ... 28, 31 ... 33, 37), trapezoidal (9, 14, 19, 24, 29, 34, 36, 38, 39, 40) or triangle (5, 15, 25, 30, 35, 41, 42, 43) excavation piecemeal (5 ... 43).In described excavation piecemeal, in order to adopt less splitting power to carry out the drawing crack of tunnel tunnel face and to shear segmentation excavation, the splitting surface 3 of synchronous splitting excavation construction is no more than two, two obtuse angles of splitting surface 3 in wide-angle intersect (namely excavating angle β in diagram is obtuse angle), comprise at least one excavation free face perpendicular to face, and meet the requirement of the splitting construction order in the middle of above after first, after first periphery, to adopt less splitting power to carry out the drawing crack of tunnel tunnel face and to shear segmentation excavation.
Oblique and in face middle shaft part mirror-image arrangement splitting hole 4 round is provided with in described face, the excavation piecemeal of described face both sides is that face middle shaft part is arranged symmetrically with, finally several pieces of excavations piecemeal (41,42,43) at described face top all adopt the triangular shape of little physical dimension to excavate piecemeal, are convenient to adopt artificial pneumatic pick or hydraulic impact hammer to carry out the excavation of last block excavation piecemeal 43.
The axially bored line in described splitting hole 4 is parallel to each other and perpendicular to described face, the axially bored line of same row's splitting hole 4 round is positioned at same plane.The pitch of holes in described same row's splitting hole 4 is less than minimum burden, to guarantee that face can carry out splitting excavation by predetermined splitting surface 3.
The piecemeal thickness of described excavation piecemeal is identical with the degree of depth of described perimeter hole 2, and the degree of depth in described splitting hole 4 is equal with total hole depth of several work cycle of described perimeter hole 2.
A kind of hard rock tunnel non-explosive excavation face partitioned organization, its construction sequence is as follows:
Adopt boring and coring rig, along tunnel excavation outline line 1, and employing is holed accordingly, outer limb sets boring, the engaged overlap of adjacent boring, finally form the perimeter hole 2 that adjacent boring is cut mutually, thus tunnel tunnel face and tunnel perimeter country rock are completely assigned to, and form the excavation free face of drilling hole wall-like at tunnel tunnel face periphery.In the utility model embodiment, perimeter hole 1 aperture 20cm, spacing of wells 18cm, the occlusion overlapped thickness 2cm of adjacent boring.
Rig is adopted to carry out the drilling construction in splitting hole 4, the axially bored line in splitting hole 4 is perpendicular to face, the axially bored line in same row's splitting hole 4 is parallel to each other and be positioned at same splitting surface 3 plane, splitting hole 4 matches each other with the drilling depth of perimeter hole 2, and a work cycle drilling depth in splitting hole 4 is equal with several work cycle total footages of perimeter hole 2.In the utility model embodiment, perimeter hole 2 drilling depth 0.5m, splitting hole 4 hole depth 2m.
According in the middle of above after below elder generation, after first periphery construction order (5,6,7 ..., 43), first, splitting excavation is positioned at the excavation piecemeal 5 with both sides below tunnel tunnel face, then, successively splitting excavation excavate accordingly piecemeal (6,7 ..., 42), finally, artificial pneumatic pick or hydraulic impact hammer is adopted to excavate last block excavation piecemeal 43, splitting excavate each block excavation piecemeal (5 or 6 or 7 or ... or 42) time, first the splitting work package of hydraulic splitting machine is inserted in splitting hole 4, and keep the splitting of splitting work package to open direction and splitting surface 3 is perpendicular, and then start splitting machine, progressively splitting power is applied to splitting hole 4, along with the rising gradually of splitting power, can ftracture along splitting surface 3 direction in splitting hole 4, and cracking fracture length can constantly increase, crack width also can constantly be widened, just splitting surface 3 is defined after crack, adjacent splitting hole 4 is through, afterwards, the crack width of splitting surface 3 can continue to widen, its length also can lengthen because crack extends to two ends, until monoblock excavation piecemeal (5 or 6 or 7 or ... or 42) be split separated,
Adopt artificial pneumatic pick or hydraulic impact hammer to carry out owing digging the finishing of part, until after the excavation meeting excavation contour line 1 requires, then carry out the construction of next splitting excavation circulation.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, anyly do not depart from technical solutions of the utility model content, the any simple modification done above examples of implementation according to technical spirit of the present utility model, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (5)
1. a hard rock tunnel non-explosive excavation face partitioned organization, it is characterized in that, comprise tunnel tunnel face, the perimeter hole that occlusion is overlapping is mutually provided with along described tunnel tunnel face excavation contour line, to form excavation free face, the many rows splitting hole round mutually in parallel or crossing layout is provided with in described face, described splitting hole round is made up of the splitting hole of equidistant arrangement, each row splitting hole round forms a splitting surface, and face is divided into several rhombuses, trapezoidal or leg-of-mutton excavation piecemeal by several splitting surfaces.
2. a kind of hard rock tunnel non-explosive excavation face partitioned organization according to claim 1, in described excavation piecemeal, every two splitting surfaces be wide-angle obtuse angle intersect, and comprise at least one excavation free face perpendicular to face, get on, get off to meet, after first periphery in the middle of the requirement of splitting construction order.
3. a kind of hard rock tunnel non-explosive excavation face partitioned organization according to claim 1, oblique and in face middle shaft part mirror-image arrangement splitting hole round is provided with in the middle part of described face, the excavation piecemeal of described face both sides is that face middle shaft part is arranged symmetrically with, the excavation piecemeal at described face top is triangular shape excavation piecemeal, so that adopt artificial pneumatic pick or hydraulic impact hammer to carry out the excavation of last block excavation piecemeal.
4. a kind of hard rock tunnel non-explosive excavation face partitioned organization according to claim 1, the axially bored line in described splitting hole is parallel to each other and perpendicular to described face, the axially bored line of same row's splitting hole round is positioned at same splitting surface plane, the pitch of holes in described same row's splitting hole is less than minimum burden, to guarantee that face can carry out splitting excavation by predetermined splitting surface.
5. a kind of hard rock tunnel non-explosive excavation face partitioned organization according to claim 1, the piecemeal thickness of described excavation piecemeal is identical with the degree of depth of described perimeter hole, and the degree of depth in described splitting hole is equal with total hole depth of several work cycle of described perimeter hole.
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| CN201420589461.2U CN204152517U (en) | 2014-10-13 | 2014-10-13 | A kind of hard rock tunnel non-explosive excavation face partitioned organization |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677788A (en) * | 2017-01-10 | 2017-05-17 | 张华� | Mechanical excavation method for hard-rock tunnel with medium-short length |
| CN107269284A (en) * | 2017-08-18 | 2017-10-20 | 徐工集团工程机械有限公司 | Hard rock tunnel excavation construction method |
| CN109736825A (en) * | 2018-12-24 | 2019-05-10 | 中铁三局集团有限公司 | Super hard rock tunnel water drilling cooperates hydraulic splitting excavation construction method |
| CN110295912A (en) * | 2019-07-18 | 2019-10-01 | 中铁隧道集团一处有限公司 | The sensitive non-quick-fried efficient excavating load of the good hard rock large cross-section tunnel of location integrality |
-
2014
- 2014-10-13 CN CN201420589461.2U patent/CN204152517U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677788A (en) * | 2017-01-10 | 2017-05-17 | 张华� | Mechanical excavation method for hard-rock tunnel with medium-short length |
| CN107269284A (en) * | 2017-08-18 | 2017-10-20 | 徐工集团工程机械有限公司 | Hard rock tunnel excavation construction method |
| CN109736825A (en) * | 2018-12-24 | 2019-05-10 | 中铁三局集团有限公司 | Super hard rock tunnel water drilling cooperates hydraulic splitting excavation construction method |
| CN110295912A (en) * | 2019-07-18 | 2019-10-01 | 中铁隧道集团一处有限公司 | The sensitive non-quick-fried efficient excavating load of the good hard rock large cross-section tunnel of location integrality |
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Address after: 350108 No.1, Gaoxin Avenue, high tech Zone, Minhou County, Fuzhou City, Fujian Province Patentee after: Fuzhou planning and Design Institute Group Co.,Ltd. Address before: No. 188, Hudong Road, Fuzhou, Fujian 350003 Patentee before: FUZHOU PLANNING DESIGN & Research Institute |
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