CN100564803C - Rock lane digging method - Google Patents
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- CN100564803C CN100564803C CNB2006101441100A CN200610144110A CN100564803C CN 100564803 C CN100564803 C CN 100564803C CN B2006101441100 A CNB2006101441100 A CN B2006101441100A CN 200610144110 A CN200610144110 A CN 200610144110A CN 100564803 C CN100564803 C CN 100564803C
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Abstract
The invention discloses a kind of rock lane digging method, at first adopt directional blasting technology, carrying out explosion formation precracking near the rock gangway peripheral position.Adopt loosen blasting technique then, the rock in the precracking is carried out fragmentation, directional blasting and loosening blasting can be carried out step by step, also can carry out synchronously, detonate in proper order, and directional blasting detonates prior to loosening blasting.Adopt stone head development machine to excavate fragmented rock at last.Adopt the development machine driving to combine with controlled blasting, reduced greatly to country rock destruction, increased safety, and having improved driving speed, reduced cost, is a kind of efficient, safety, cost is low, operating environment good, labour intensity is low rock lane digging method.Be applicable to various rock gangways are tunneled, be particularly useful for having the driving of the stone head of higher hardness.
Description
Technical field
The present invention relates to a kind of stone drifting technology, relate in particular to the rock lane digging method that a kind of Controlled Blasting combines with the development machine driving technology.
Background technology
In the construction of mine stone head, stone head development machine driving and two kinds of methods of drilling and blasting method being arranged generally at present, mainly is to adopt drilling and blasting method.The drivage efficiency of two kinds of methods is not high, and the moon advances to be difficult to break through 100m.
In the stone head construction, the drilling and blasting method driving accounts for more than 90% at present.Drilling and blasting method hammer drill rock drilling utilizes explosive to realize the moment explosion, has the fireballing characteristics of broken rock, and this is the key factor that the drilling and blasting method development still accounts for main proportion so far.Main technique is jewel hole, powder charge, explosion, and personnel and equipment evacuate to safe place before the explosion, after the explosion blasting fume and pernicious gas is discharged, and personnel and equipment will enter driving face muck, transportation spoil and support work.Main rock drilling equipment has hand-held air rock drill, hydraulic drill rig perforating, and main muck equipment has slusher formula, bucker-type, crab claw type, side dump dirt loader, mostly is scraper mucking.
The subject matter that drilling and blasting method exists is:
At first be that driving speed is low.Though drilling and blasting method can obtain higher broken rock speed,, cause technology unreasonable owing to be subjected to the influence of explosion and the restriction of working space, mechanization degree is low, and labor strength is big, is difficult to realize simultaneously and successional driving, the restriction driving speed, the general moon advances about 100 meters of speed.
Next is, roadway quality is poor, and safety is low.Drilling and blasting method is serious to surrounding rock failure, the empty top time is long, the operation under the condition of empty top that has, and personal safety can not get definite guarantee.Dust, equipment construction noise are big to operating personnel's influence, and it is healthy that the dust that produces after the driving face explosion has a strong impact on the operating personnel, is difficult to realize the purpose of safety, High-efficient Production.
At present in the development machine drivage method construction of stone head, because the mechanization and the automatization level of stone head development machine have obtained large increase, development machine can excavate the tunnel of different shape under the different geological conditionss, the type of development machine is also more and more, have safe, surrounding rock failure is little, the characteristics that labour intensity is low.
But stone head development machine breaks when cutting than hard formation, and the unit specific energy consumption is big, power consumption and driving expense are higher more than 10 times than drilling and blasting method, and broken rock speed is slow, and driving speed is restricted, and the loss of development machine pick is serious, machines cumbersome, equipment failure rate height, reliability and compliance are relatively poor.Especially tunnel in the rock stratum of high strength, high abrasive, not only efficient is very low, and electric energy that consumes and the appropriate litigation fees height that tunnels material.
Summary of the invention
The purpose of this invention is to provide a kind of efficient, safety, rock lane digging method that cost is low.
The objective of the invention is to be achieved through the following technical solutions:
Rock lane digging method of the present invention comprises step:
A, employing directional blasting technology are at first being arranged a plurality of presplitting big gun holes and pilot hole near rock gangway periphery position, and an amount of explosive of packing in presplitting big gun hole then carries out directional blasting, forms precracking;
B, employing loosen blasting technique are at first arranged a plurality of loosening big guns hole on the rockwork face of rock gangway, then according to rock behavio(u)r, an amount of explosive of packing in loosening big gun hole carries out loosening blasting with the catalase in the precracking;
The loosening rock in C, employing development machine excavation tunnel.
In the described steps A, the spacing between the described presplitting big gun hole is: 300mm～1000mm, and a pilot hole can be arranged in one or more presplitting big gun hole, every interval;
Explosive specific charge is in the presplitting big gun hole: 0.60～1.20kg/m
3, described explosive specific charge refers to the explosive charge of the rock needs of unit volume.
Among the described step B, the spacing between described loosening big gun hole is 800mm～2000mm, and the distance in described loosening borehole distance presplitting big gun hole is 700mm～1200mm; Explosive specific charge is 0.30～1.00kg/m in the loosening big gun hole
3
Described loosening big gun hole comprises dark loosening big gun hole and shallow loosening big gun hole, and one or more dark shallow loosening big gun holes of layout, loosening big gun holes, every interval and/or pilot hole, and the blast hole depth in described shallow loosening big gun hole is smaller or equal to 1/2nd of dark loosening blast hole depth.
The charging means in described loosening big gun hole is: the local continuous charging in loosening deeply big gun hole; Perhaps,
Dark loosening big gun hole continuous charging, and powder charge is interrupted in shallow loosening big gun hole; Perhaps,
The local continuous charging in dark loosening big gun hole, and powder charge is interrupted in shallow loosening big gun hole; Perhaps,
The local continuous charging in dark loosening big gun hole, and shallow loosening big gun hole continuous charging.
The diameter in described presplitting big gun hole and/or loosening big gun hole is 30～100mm, and hole depth is 1000～20000mm.
The diameter in described loosening big gun hole is 30～45mm, and hole depth is 1000～2500mm.
The diameter in described loosening big gun hole is 40～100mm, and hole depth is 2500～20000mm.
Described steps A and step B carry out synchronously, detonate in proper order when detonating, and detonate prior to loosening big gun hole in presplitting big gun hole.
Among the described step C, described development machine comprises lifting arm, and the front end of lifting arm is provided with cutting head, but the cutting head cutting rock, described lifting arm can about, swing, drive and cut head with orbiting motion arbitrarily.
As seen from the above technical solution provided by the invention, rock lane digging method of the present invention, owing at first, adopt loosening blasting method fractured rock then, excavate fragmented rock with stone head development machine at last adopting directional blasting to form precracking near the rock gangway periphery.Adopt the development machine driving to combine with controlled blasting, reduced greatly to country rock destruction, increased safety, and improved driving speed, reduced cost, be a kind of efficiently, safety, rock lane digging method that cost is low.
Be applicable to various rocks are tunneled, be particularly useful for having the driving of the mine stone head of higher hardness.
Description of drawings
Fig. 1 arranges the schematic diagram in presplitting big gun hole near peripheral position at the rock gangway of need driving for the present invention;
Fig. 2 arranges schematic diagram for the present invention in the big gun hole that the rock gangway work plane layout presplitting big gun hole of need driving reaches the specific embodiment one in loosening big gun hole;
Fig. 3 arranges schematic diagram for the present invention in the big gun hole that the rock gangway work plane layout presplitting big gun hole of need driving reaches the specific embodiment two in loosening big gun hole;
Presplitting blast hole projectile filling structural representation when Fig. 4 carries out directional blasting for the present invention;
Loosening blast hole projectile filling structural representation when Fig. 5 carries out loosening blasting for the present invention.
The specific embodiment
The preferable specific embodiment of stone head driving method of the present invention is:
As shown in Figure 1, at first adopt directional blasting technology, arranging a plurality of presplitting big gun holes and pilot hole near rock gangway periphery position, an amount of explosive of packing in presplitting big gun hole then carries out directional blasting, forms precracking;
Adopt loosen blasting technique then, arrange a plurality of loosening big guns hole on the rockwork face of rock gangway, then according to rock behavio(u)r, an amount of explosive of packing in loosening big gun hole carries out loosening blasting with the catalase in the precracking;
Adopt the loosening rock in development machine excavation tunnel at last.
Directional blasting and loosening blasting all belong to controlled blasting.
The utilization directional blasting technology forms precracking at the periphery of stone head.In the directional blasting process, spacing between the described presplitting big gun hole is preferably: 300mm～1200mm, can be for 300,400,500,800,900,1000, preferred size such as 1200mm, also can be other size as required, and a pilot hole is arranged in one or more presplitting big gun hole, every interval, and quantity that pilot hole is arranged and position are to determine according to the direction of the hardness of rock and explosion.
Behind the good hole of cloth, the explosive of in presplitting big gun hole, packing into, blasting charge not in the pilot hole, explosive specific charge is in the presplitting big gun hole: 0.60～1.20kg/m
3, can be for 0.60,1.0,1.20kg/m
3Etc. preferred dose, described explosive specific charge refers to the explosive charge of the rock needs of unit volume.
As shown in Figure 4, adopt during powder charge the cumulative powder stick of directional fracture or not lotus root attach together the medicine structure and implement presplit blasting, forming precracking near the rock gangway periphery, the explosive specific charge when adopting the explosion of cumulative powder stick is got higher value.The cumulative powder stick is the charge constitution with control explosive detonation energy release direction; Lotus root does not attach together the charge constitution that medicine refers to that presplitting blast hole projectile filling employing reservation air column or medicine are directly little than blasthole diameter.
For the directional blasting of hole depth more than 5000, peripheral presplitting big gun Kongzui adopts the cumulative powder stick to implement directional fracture blasting well;
For the manual charging, presplitting big gun hole is adopted not lotus root to attach together medicine and is implemented presplit blasting, and the presplitting borehole spacing is 300～800mm;
For the deep hole blasting of adopting the down-hole charging machine, the explosion of cumulative powder stick is adopted in peripheral presplitting big gun hole, and the presplitting borehole spacing is 600～1200mm.The distance of presplitting borehole distance rock gangway profile is 400～600mm.
The mode of loosening blasting has multiple, can select as required.
When layout is become flexible the big gun hole, can arrange dark loosening big gun hole and shallow loosening big gun hole, a shallow loosening big gun hole can be arranged in one or more dark big gun holes of becoming flexible, every interval, the blast hole depth in described shallow loosening big gun hole is smaller or equal to 1/2nd of deeply loosening blast hole depth; Also can only arrange dark loosening big gun hole, a pilot hole can be arranged in one or more dark loosening big gun holes, every interval; Also can arrange dark loosening big gun hole, shallow loosening big gun hole and pilot hole simultaneously, the space is arranged.
On the tunnel rock of need driving, arrange a plurality of loosening big guns hole, arrange a plurality of or a small amount of pilot holes at work plane, also can not arrange pilot hole than fractured rock according to lithology.According to the loosening blasting design an amount of explosive of packing into, the employing loosening blasting is avoided the rock throwing with catalase as far as possible in the loosening big gun hole, and pilot hole is blasting charge not.
Loosening borehole spacing is 800mm～2000mm, and loosening borehole distance presplitting borehole distance is from 700mm～1200mm.Concrete size is determined according to lithology soft or hard and degree of crushing, is got big value than the borehole spacing of fractured rock.Explosive specific charge is 0.30～1.00kg/m in the loosening big gun hole
3, concrete dose determines according to lithology and section size, gets the small value than the explosive specific charge of fractured rock.
As shown in Figure 5, according to the characteristics of rock gangway deep hole loosening blasting, can be divided into three kinds of embodiments: 1. deep hole continuous charging and shallow bore hole are united blasting scheme; 2. the local continuous charging blasting scheme of deep hole; 3. local continuous charging of deep hole and shallow bore hole are united blasting scheme.The mode of shallow bore hole powder charge wherein, the mode that also can adopt continuous charging or be interrupted powder charge.Generally when the deep hole loosening blasting, can adopt identical blast hole depth or dark, shallow loosening big gun hole arranged in conjunction.Deeply, the blast hole depth in the shallow loosening big gun hole in shallow loosening big gun hole is smaller or equal to becoming flexible 1/2nd of big gun hole deeply, can becoming flexible big gun holes at interval more than one or more deeply.
Directional blasting and loosening blasting are to carry out under the situation of strictness control dose, avoid forming the rock pinpoint blasting as far as possible.Can reduce flue dust and pernicious gas, improve operating environment, carry out explosion on the spot, equipment is not withdrawn the job site, and avoiding explosion to stop operation influences the serialization driving.
It is 30～100mm that the diameter in above presplitting big gun hole and loosening big gun hole is generally, and hole depth is generally 1000～20000mm.Wherein,
In loosening blasting, blast hole depth 1000～2500mm is the medium-length hole loosening blasting, can adopt pusher leg drill, and blasthole diameter is preferably 30～45mm;
Blast hole depth 2500～20000mm is the deep hole loosening blasting, and the diameter in big gun hole is preferably 40～60mm.
Wherein, blast hole depth 5000～20000mm is the superdeep holes loosening blasting, adopts pneumatic or the boring of hydraulic pressure deep hole rig, and the diameter in big gun hole is preferably 40～100mm, and the charging machine powder charge is preferably adopted in powder charge.
Above directional blasting and loosening blasting can be carried out as required in gradation; Also can carry out synchronously, detonate in proper order when detonating, detonate prior to loosening big gun hole in presplitting big gun hole, i.e. jewel hole, powder charge synchronously synchronously utilizes time difference of delay detonator when detonating, and order is detonated.
After loosening blasting is finished, just can adopt the loosening rock in development machine excavation tunnel.Described development machine comprises lifting arm, and the front end of lifting arm is provided with cutting head, but the cutting head cutting rock, described lifting arm can about, swing, drive and cut head with orbiting motion arbitrarily.
Stone head development machine technology and equipment type selecting does not have specific (special) requirements, can adopt part section boom-type roadheader, and operating principle is basic identical, and hydraulic pressure, automatically controlled, shipment, walking manner are similar, and cutting mode has longitudinal axis cutting and transverse axis to cut 2 kinds.By about the lifting arm, horizontal hunting, cooperate the cutting head rotation, preferably be the serpentine movement locus, finish the cutting of a section, can cut the drift section of arbitrary shape.
The stone head development machine production line mainly is made up of main frame and back corollary equipment, realizes the intensification function, further brings into play its usefulness, raises labour productivity.Main frame declines the rock cutting get off, and transshipment acitivity is transported to the machine afterbody to broken spoil, is transported by the supporting elevating conveyor in back, transporter, shuttle car, mine car or belt conveyer.The cutting arm of stone head development machine can about, about freely swing, what cut out is surperficial accurate, smooth, is convenient to supporting.Crawler type walking mechanism is transferred flexibly machine, is convenient to turn, climb, and is strong to complex geological condition compliance.
For the mine of way of escape spoil transportation difficulty, can set up waste bin in the down-hole, spoil temporarily is stored in the waste bin.
The present invention is in conjunction with the advantage of drilling and blasting method and development machine drivage method, adopt Controlled Blasting and stone head development machine, basic realize serialization stone drifting, all improve more than 2 times that normal month driving speed is more than 200 meters than the driving speed of present drilling and blasting method, development machine drivage method.And improve roadway quality, adopted directed Controlled Blasting of tunnel-surrounding and stone head development machine driving, the tunnel-surrounding forming, the irregularity degree in tunnel is little, reduces flowing resistance.
In addition, directional blasting, loosening Controlled Blasting have greatly reduced the destruction of explosion to country rock, have reduced the supporting difficulty and the support cost of roadway surrounding rock.And significantly reduced the influence of pernicious gas and dust, greatly reduced working strength of workers, improved operating environment, ensured that the workman's is healthy.
Adopt loosening Controlled Blasting for hard above rock in the stone head development machine driving provides technical guarantee, solved development machine when medium-hard rock tunnels, energy consumption increases, serious, the inefficient problem of pick loss.
Be particularly useful for inclined shaft and hard heading, be applicable to various stone head sections, various support pattern.
A specific embodiment of controlled blasting, as shown in Figure 2, the blast hole depth unanimity, no pilot hole, the local continuous charging blasting scheme of deep hole comprises content:
(1) blast hole depth: the blast hole depth 2000～20000mm of loosening blasting.
(2) borehole spacing: the manual charging, presplitting big gun hole is adopted not lotus root to attach together medicine and is implemented presplit blasting, and the presplitting borehole spacing is 500～800mm; For the deep hole presplit blasting of adopting the down-hole charging machine, peripheral presplitting big gun hole can adopt the cumulative powder stick to implement directional fracture blasting, and the presplitting borehole spacing is 700～1200mm.Presplitting borehole distance rock gangway profile is 400～600mm.
Loosening borehole spacing is 800mm～2000mm, and loosening borehole distance presplitting borehole distance is from 700mm～1200mm.
(3) explosive payload: explosive specific charge is 0.60～1.20kg/m in the presplitting big gun hole
3, the explosive specific charge of cumulative powder stick explosion is got higher value.Explosive specific charge is 0.30～1.00kg/m in the loosening big gun hole
3, concrete dose determines according to lithology and section size, gets the small value than the explosive specific charge of fractured rock.
(4) charge constitution: the manual charging, presplitting big gun hole is adopted not lotus root to attach together medicine and is implemented presplit blasting; For the deep hole directional blasting that adopts the down-hole charging machine, peripheral presplitting big gun hole adopts cumulative powder stick charge constitution to implement directional fracture blasting.Presplitting big gun hole and loosening big gun hole are along the axial arranged a plurality of powder stick groups of blast hole depth, and each powder stick group is arranged a blasting cap initiation, or adopt the powder charge of detonating fuse connecting axle to diverse location.In the explosive payload that guarantees to reduce under the loosening requirement of aperture scope rock Kong Ding position section powder stick group as far as possible.
(5) explosive and detonator are selected: various types of explosive is determined according to the rock gangway condition.Detonator is selected the 8# electric cap for use, and detonator payment to a porter length ratio is looked blast hole depth and determined that single hole uses a plurality of 1～3 section detonator, and low section detonator is used in the bottom, hole, decides detonator of every group of powder stick according to powder stick group number.
(6) detonation mode: the powder stick group adopts indirect initiation (detonating earlier at the bottom of the hole) or apart to detonate (Kong Dingxian detonates), is allowing to adopt the mine of indirect initiation to adopt indirect initiation as far as possible.
(7) obstruction method: must connect airtight tightly between every group of explosive cartridge, collar extension packing length is not less than the water stemming material of 0.4m, and water stemming material external application clay stemming fills up tamping, and guarantees that the shutoff length of clay stemming is not less than 600mm.
(8) stone head development machine production line: use the development machine that is fit to the rock characteristics, mainly form, realize the intensification function, further bring into play its usefulness, raise labour productivity by main frame and back corollary equipment.For the mine of way of escape spoil transportation difficulty, can set up waste bin in the down-hole, spoil temporarily is stored in the waste bin.
Another specific embodiment, as shown in Figure 3, loosening deeply big gun hole and shallow loosening big gun span are arranged, local continuous charging in loosening deeply big gun hole and shallow loosening big gun hole associating blasting scheme, no pilot hole comprises main contents:
(1) blast hole depth: the degree of depth 10000mm in loosening deeply big gun hole; The degree of depth 2000mm in shallow loosening big gun hole.
(2) borehole spacing: the manual charging, presplitting big gun hole is adopted not lotus root to attach together medicine and is implemented presplit blasting, and the presplitting borehole spacing is 500 ~ 800mm; For the deep hole presplit blasting of adopting the down-hole charging machine, peripheral presplitting big gun hole adopts the cumulative powder stick to implement directional fracture blasting, and the presplitting borehole spacing is 700 ~ 1200mm.Presplitting borehole distance rock gangway profile is 400～600mm.
Loosening borehole spacing is 1000mm～1500mm, and loosening borehole distance presplitting borehole distance is from 700mm～1200mm.
(3) explosive payload: explosive specific charge is 0.50～1.20kg/m in the presplitting big gun hole
3, the explosive specific charge of cumulative powder stick explosion is got higher value.Explosive specific charge is 0.30～1.00kg/m in the dark loosening big gun hole
3Explosive specific charge is 0.30～0.70kg/m in the shallow loosening big gun hole
3, concrete dose determines according to lithology and section size, gets the small value than the explosive specific charge of fractured rock.
Dark loosening blast hole projectile filling length is dark loosening big gun hole long 1/2nd.Shallow loosening blast hole projectile filling length is that shallow loosening big gun hole is long by 1/3rd, is divided into two cartridge bag groups.
(4) charge constitution: the manual charging, presplitting big gun hole is adopted not lotus root to attach together medicine and is implemented presplit blasting; For the deep hole directional blasting that adopts the down-hole charging machine, peripheral presplitting big gun hole adopts cumulative powder stick charge constitution to implement directional fracture blasting.
Continuous charging is axially adopted along blast hole depth in dark loosening big gun hole, arranges a blasting cap initiation.Shallow loosening blast hole projectile filling adopts discontinuous powder charge, in the explosive payload that guarantees to reduce under the loosening requirement of aperture scope rock Kong Ding position section powder stick group as far as possible.
(5) explosive and detonator are selected: various types of explosive is determined according to the rock gangway condition.Detonator is selected the 8# electric cap for use, and detonator payment to a porter length is looked blast hole depth and determined.
(6) detonation mode: adopt indirect initiation or direct initiation, allowing to adopt the mine of indirect initiation to adopt indirect initiation as far as possible.
(7) obstruction method: must connect airtight tight between every group of explosive cartridge, collar extension packing length is not less than the water stemming material of 0.4m, tamping is filled up with clay stemming in the outer close aperture of water stemming material, and guarantees that the shutoff length that the dark shutoff length of becoming flexible big gun hole clay stemming is not less than 800mm, shallow loosening big gun hole clay stemming is not less than 600mm.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (8)
1, a kind of rock lane digging method is characterized in that, comprises step:
A, employing directional blasting technology are at first being arranged a plurality of presplitting big gun holes and pilot hole near rock gangway periphery position, and an amount of explosive of packing in presplitting big gun hole then carries out directional blasting, forms precracking;
B, employing loosen blasting technique are at first arranged a plurality of loosening big guns hole on the rockwork face of rock gangway, then according to rock behavio(u)r, an amount of explosive of packing in loosening big gun hole carries out loosening blasting with the catalase in the precracking;
The loosening rock in C, employing development machine excavation tunnel;
Among the described step B, the spacing between described loosening big gun hole is 800mm～2000mm, and the distance in described loosening borehole distance presplitting big gun hole is 700mm～1200mm; Explosive specific charge is 0.30～1.00kg/m in the loosening big gun hole
3
Described loosening big gun hole comprises dark loosening big gun hole and shallow loosening big gun hole, and one or more dark shallow loosening big gun holes of layout, loosening big gun holes, every interval and/or pilot hole, and the blast hole depth in described shallow loosening big gun hole is smaller or equal to 1/2nd of dark loosening blast hole depth.
2, rock lane digging method according to claim 1 is characterized in that, in the described steps A, the spacing between the described presplitting big gun hole is: 300mm～1000mm, and a pilot hole can be arranged in one or more presplitting big gun hole, every interval;
Explosive specific charge is in the presplitting big gun hole: 0.60～1.20kg/m
3, described explosive specific charge refers to the explosive charge of the rock needs of unit volume.
3, rock lane digging method according to claim 1 is characterized in that, the charging means in described loosening big gun hole is: the local continuous charging in loosening deeply big gun hole; Perhaps,
Dark loosening big gun hole continuous charging, and powder charge is interrupted in shallow loosening big gun hole; Perhaps,
The local continuous charging in dark loosening big gun hole, and powder charge is interrupted in shallow loosening big gun hole; Perhaps,
The local continuous charging in dark loosening big gun hole, and shallow loosening big gun hole continuous charging.
According to claim 1,2 or 3 described rock lane digging methods, it is characterized in that 4, the diameter in described presplitting big gun hole and/or loosening big gun hole is 30～100mm, hole depth is 1000～20000mm.
5, rock lane digging method according to claim 4 is characterized in that, the diameter in described loosening big gun hole is 30～45mm, and hole depth is 1000～2500mm.
6, rock lane digging method according to claim 4 is characterized in that, the diameter in described loosening big gun hole is 40～100mm, and hole depth is 2500～20000mm.
According to claim 1,2 or 3 described rock lane digging methods, it is characterized in that 7, described steps A and the synchronous jewel hole of step B, powder charge are synchronously detonated when detonating in proper order, and detonate prior to loosening big gun hole in presplitting big gun hole.
8, rock lane digging method according to claim 1, it is characterized in that, among the described step C, described development machine comprises lifting arm, the front end of lifting arm is provided with cutting head, but the cutting head cutting rock, described lifting arm can about, swing, drive and cut head with orbiting motion arbitrarily.
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