CN116625183A - High-steep slope blasting construction method for broken rock under complex geological conditions - Google Patents
High-steep slope blasting construction method for broken rock under complex geological conditions Download PDFInfo
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- CN116625183A CN116625183A CN202310875268.9A CN202310875268A CN116625183A CN 116625183 A CN116625183 A CN 116625183A CN 202310875268 A CN202310875268 A CN 202310875268A CN 116625183 A CN116625183 A CN 116625183A
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- 238000007600 charging Methods 0.000 claims abstract description 21
- 238000005553 drilling Methods 0.000 claims abstract description 21
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/10—Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a high-steep side slope blasting construction method for broken rock under complex geological conditions, which comprises the steps of mapping and analyzing the properties of a side slope rock mass and the range and depth of side slope cracking to design blasting holes and charging parameters; removing broken rock suspended on a side slope; setting out the plane position and the corresponding orientation point of the blasting hole in the range of the slope to be blasted, and then manually drawing out the hole or drilling the hole by a drilling machine according to setting out; after the explosion hole is inspected to be qualified, sequentially loading an explosive, a flexible spacer and a filling material from bottom to top according to an explosion design, and embedding an initiating explosive roll and a digital electronic detonator in the explosive; blasting is performed row by row from bottom to top, and each row of charging is initiated hole by hole. The invention can reduce the risk of burying personnel and machinery caused by side slope collapse, has low blasting cost and simple construction operation, can eliminate broken rock mass and suspended surrounding rock of high and steep side slopes, has smoother side slope after blasting, and has the characteristics of simple construction operation, low cost, large blasting square quantity and lower safety risk.
Description
Technical Field
The invention belongs to the technical field of blasting engineering, and particularly relates to a high-steep slope blasting construction method for breaking rock under complex geological conditions with simple construction operation, low cost, large blasting capacity and low safety risk.
Background
In the open-air and underground engineering excavation construction such as railway construction, expressway tunnel construction, coal mining, metal ore mining, nonmetal ore mining and the like, most of the most economical, safe and efficient drilling and blasting methods are selected, and a reasonable drilling and blasting mode and preferred blasting parameters are one of the most core technical conditions of the drilling and blasting method construction. The construction process of the mountain highway is often influenced by natural factors and human factors, such as adverse conditions of terrain conditions, hydrogeology, poor professional knowledge of constructors, large construction blasting amount, difficult transportation, more large mist and difficult construction operation conditions, and the like, and the conventional drilling and blasting method is difficult to put into large scale due to large equipment, so that the construction progress of the mountain highway is slower, the construction period is prolonged, the personnel and economic cost are greatly improved, and therefore, the selection of a safe and efficient construction method is crucial to solving the engineering.
In addition, in some highway construction, the geological conditions are complicated due to the fact that the side slope is high, the slope angle is large, the overlying soil layer of the rock mass is thick, surrounding rock mass development, traffic conditions are difficult, and the like, the conventional construction can select to use artificial operation equipment such as an excavator to excavate the mountain side slope, so that the phenomenon that the excavator and personnel are buried due to large-area collapse is easy to occur, the life safety of constructors is seriously threatened, great economic loss is caused for constructors, and meanwhile, the policy of 'safety first, prevention as a main part and comprehensive treatment' is also violated. Particularly, under the complex geological conditions of frequent geological activities, high altitude, bad weather and the like, the rock with the slope height being larger than 30m breaks the high steep slope, and because the slope angle is larger, the upper earth covering layer is thicker, stratum rock is broken, the conventional mechanical stripping can only use small equipment, so that the construction efficiency is lower, the construction operation is difficult, the risk of rolling and collapsing exists, and the construction personnel and the construction mechanical equipment have larger potential safety hazards. Therefore, in the prior art, a blasting method is mostly adopted to cut a steep slope, but the existing blasting method mainly aims at reducing the explosive consumption and increasing the blasting amount to reduce the blasting cost, and less attention is paid to the forming quality of a blasting surface, so that the possibility of broken stone and collapse of a slope after blasting is increased, a large amount of manpower and material resources are required to be invested for cleaning in the later period, and the rolling and buried safety influence is also caused. Therefore, in order to avoid casualties caused by mechanical excavation and great economic loss and improve the slope quality after blasting construction, a construction technology is required to be searched for solving the problem of reliable slope cutting of high-steep slopes of broken rocks under complex geological conditions.
Disclosure of Invention
According to the defects that personnel safety and equipment are damaged easily, broken stone and collapse risks are prone to occurring on a slope after blasting in the prior art when a high-steep slope is cut under complex geological conditions of upper soil covering layer thickness and rock mass breaking, the method for blasting construction of the high-steep slope for breaking the rock under complex geological conditions of simple construction operation, low cost, large blasting square quantity and low safety risks is provided.
The invention is realized in the following way: the method comprises the steps of investigation analysis, broken rock removal, drilling, charging and blasting, wherein the steps are as follows:
A. investigation and analysis: mapping and analyzing the property of the side slope rock mass and the range and depth of side slope cracking, and determining the blasting range and parameters for designing blastholes and charging according to investigation;
B. and (3) rock crushing and cleaning: clearing broken rocks suspended in the range to be blasted of the side slope and the periphery of the side slope;
C. drilling: setting out the plane position and the corresponding orientation point of the blasthole in the range of the slope to be blasted, and then manually drawing out the hole or drilling the hole by a drilling machine according to setting out to form a small chamber blasthole;
D. charging: after the explosion holes of the small chamber are inspected to be qualified, sequentially loading explosive, flexible spacers and stuffing from bottom to top according to the explosion design, and embedding an initiating explosive cartridge and a digital electronic detonator in the explosive;
E. blasting: blasting is performed row by row from bottom to top, and each row of charging is initiated hole by hole.
The invention has the beneficial effects that:
1. according to the characteristics of high and steep side slopes of broken rocks under complex geological conditions, the conditions of the side slopes are analyzed through investigation to determine the blasting range and blasting parameters, then suspended broken rocks are cleared away firstly, then small chamber blastholes are formed in a manual hole digging or drilling mode according to the blasting parameters and the side slopes, and finally the small chamber blastholes are charged and blasted according to the blasting parameters; therefore, the large-area broken rock mass of the side slope can be completely exploded and thrown below the cliff below the side slope, the slope surface of the side slope after blasting is flat, the cost for cleaning in the later period is saved, the blasting square quantity is large, the method has higher economic value and practicability for treating the type of high-steep side slope, and powerful basis can be provided for engineering construction of broken rock side slopes of highways and railways, surface mine caving surrounding rocks and the like.
2. According to the invention, the situation that a large number of cracks appear in the rock mass under the side slope earthing is unstable is fully utilized, a plurality of small chamber blasting holes which are distributed at intervals are formed through drilling layout, and the charging structure and blasting control are combined, so that the side slope is treated by the huge damage vibration effect and the huge downfall characteristic generated by the small chamber blasting, the blasting square quantity is large, the slope cutting efficiency is high, the use of mechanical equipment and the use amount of blasting equipment can be obviously reduced, and the construction cost and the safety risk are effectively reduced; particularly, broken rock bodies and suspended surrounding rocks of the side slope can be completely blasted and thrown below a cliff below the side slope, the side slope surface after blasting is flat, and the side slope surface after blasting only needs a small amount or even does not need cleaning.
3. The invention has the advantages of less input amount of mechanical equipment, simple construction, less disturbance to side slopes, less or even no risk of falling down and burying equipment and personnel during operation, less specific explosive consumption and large blasting amount of the small chamber blast hole, and can obviously reduce the blasting cost.
In conclusion, the invention has the characteristics of simple blast hole arrangement, high construction efficiency, low labor intensity, low construction cost and low safety risk.
Drawings
FIG. 1 is a side view of a small chamber blast hole arrangement of the present invention;
FIG. 2 is a view from direction A of FIG. 1;
FIG. 3 is a schematic diagram of the small chamber blast hole charge configuration of the present invention;
FIG. 4 is a schematic view of a shovel according to the present invention;
in the figure: 1-slope surface, 2-broken slope surface, 3-small chamber blast hole, 4-rock emulsion explosive, 5-initiating explosive roll, 6-viscous granular explosive, 7-flexible spacer, 8-stuffing, 9-detonating tube, 10-shovel handle, 11-shovel head and 12-spoon-shaped structure.
Detailed Description
The invention is further described below with reference to the drawings and examples, but is not limited in any way to any modification or improvement based on the teachings of the invention, which falls within the scope of the invention.
As shown in fig. 1 to 4, the method comprises the steps of investigation analysis, broken rock removal, drilling, charging and blasting, wherein the steps are as follows:
A. investigation and analysis: mapping and analyzing the property of the side slope rock mass and the range and depth of side slope cracking, and determining the blasting range and parameters for designing blastholes and charging according to investigation;
B. and (3) rock crushing and cleaning: clearing broken rocks suspended in the range to be blasted of the side slope and the periphery of the side slope;
C. drilling: setting out the plane position and the corresponding orientation point of the blasthole in the range of the slope to be blasted, and then manually drawing out the hole or drilling the hole by a drilling machine according to setting out to form a small chamber blasthole;
D. charging: after the explosion holes of the small chamber are inspected to be qualified, sequentially loading explosive, flexible spacers and stuffing from bottom to top according to the explosion design, and embedding an initiating explosive cartridge and a digital electronic detonator in the explosive;
E. blasting: blasting is performed row by row from bottom to top, and each row of charging is initiated hole by hole.
In the step A, the Prussian coefficient f of the slope rock mass is 2-9, the burial depth of the broken rock mass is not more than 1.5m, the thickness of the earth covering layer is more than 0.5m, and the gradient is more than 60 degrees.
And C, the depth of blast holes of the small chamber in the step is 1.5-2.0 m, the aperture is 30-50 cm, the hole spacing is 2.5-3.0 m, and all the blast holes are quincuncial hole distribution and are parallel to each other.
The depth of the small chamber blast hole exceeds the maximum burial depth of the broken rock mass at the corresponding position.
And C, the axis of the small chamber blast hole obtained by drilling in the step is perpendicular to the horizontal plane or the axis of the small chamber blast hole and inclines 0.5-5 degrees towards the inner side of the side slope, and the manual hole digging is implemented by adopting a spade with sharp top and a spoon-shaped structure at the root.
And C, the deflection rate of each hole of the small chamber blasting holes in the step is less than or equal to 2 percent.
And D, loading a roll of rock emulsion explosive at the bottom of the small chamber blast hole in the step, embedding a detonating tube and a detonating explosive roll, filling the viscous granular explosive above the rock emulsion explosive roll, filling the viscous granular explosive on the top of the viscous granular explosive by using a flexible spacer, and finally sealing and tamping by using a filling material.
The diameter of the rock emulsion explosive is 145mm, and the density of the explosive roll is 0.95-1.30 g/cm 3 The detonation velocity is 4000-4500 m/s, the high degree is 15-17 mm, the explosive density of the viscous granular explosive is 0.8-1.0 g/cm 3 The explosion speed is not less than 2800m/s, the fierce degree is not less than 18, and the small chamber explosion holes are filled with 1.5-2.0 bags of viscous granular explosive with 25+/-0.5 kg of each bag.
The rock emulsion explosive is rock emulsion explosive No. 1, and the viscous granular explosive is ANN-2 viscous granular explosive.
The stuffing is formed by mixing loess, gypsum and a liquid adhesive, wherein the liquid adhesive is water-based environment-friendly glue, starch adhesive or rubber solution glue.
The liquid adhesive is any one or at least two mixed building glues in the prior art, such as 801 building glues, 901 building glues, 107 building glues, 108 building environment-friendly glues and sBS resin glues.
The flexible spacer is 2-3 woven bags, 2-5 layers of bubble buffer films or 0.5-5 cm foam pads which are overlapped with each other.
And E, in the step of blasting holes of the small chambers in the same row, detonating the blasting holes of the small chambers in Kong Jian for 4-6 ms and delaying the blasting holes between rows for 4-50 ms from the middle part of the transverse range of the pre-burst slope to two sides in a staggered manner or symmetrically and simultaneously detonating.
Example 1
As shown in fig. 1 to 4, the side slope of a certain high-altitude strip mine in Yunnan has the characteristics of large drop, relatively broken upper rock, easy weathering and the like, and is near to the end, the rock mass structure of the region mainly comprises sika rock, breccia, limestone, dolomite and the like, and belongs to medium firm and firm states, f=2-9, the compressive strength of the rock is 50-60 MPa, the rock mass is relatively developed, and the side slope surrounding rock is more broken due to strong vibration generated by relatively large damage to the side slope and high explosive unit consumption caused by no standard design when the blasting parameters are designed during the early-stage presplitting blasting, particularly the side slope top pumice is more. Therefore, the slope needs to be cut, and the concrete process is as follows:
s100: mapping and analyzing properties of the side slope rock mass (f=2-9, the compressive strength of the rock is 50-60 MPa) and the range and depth of side slope cracking, finding that a large-area cracking phenomenon occurs after the side slope body collapses, and the burying depth of broken surrounding rock is about 1.3m and the covering soil layer thickness exceeds 0.7m, so that the construction is difficult again by using a manual operation machine, the blasting range is determined according to investigation, and the parameters of 10 blastholes and charges are designed and arranged in total.
S200: and (5) removing the broken rock suspended in the range of the side slope to be blasted and around the side slope by using steel drills.
S300: and (3) lofting the plane position and the corresponding orientation point of the blastholes in the range of the slope to be blasted, manually drawing holes by adopting a spade with sharp top of a spade head 11 and a spoon-shaped structure 12 arranged at the root according to lofting, forming 10 quincuncial-shaped arranged and parallel small chamber blastholes with the aperture of 30cm, the hole depth of 1.5m and the hole spacing of 2.5m, wherein the axis of each small chamber blasthole is perpendicular to the horizontal plane, and the deflection rate of each hole is less than or equal to 2%.
S400: after the explosion holes of the small chamber are inspected to be qualified, firstly cleaning scraps in the explosion holes, and then sequentially charging the materials from bottom to top according to the explosion design: firstly, putting a roll of No. 1 rock emulsion explosive with the diameter of 145mm into the bottom of a blast hole to serve as an initiating explosive, inserting the initiating explosive into a digital electronic detonator, then pouring 1.5 bags of ANN-2 type viscous granular explosive (25 kg per bag) into the blast hole, filling 2-3 woven bags into the top end of the viscous granular explosive, adding the screened quantitative yellow mud, gypsum and liquid adhesive into quantitative tap water, uniformly stirring to form a filling material, and finally filling and tamping the rest part in the blast hole of a small chamber by using the filling material to finish charging.
TABLE 1 ANN-2 viscous granular explosive
Table 2 table number 1 rock emulsion explosive performance parameters of 145mm diameter
。
S500: and each small chamber blasting hole in the blasting range is blasted row by row from bottom to top and each row of charging is blasted hole by hole, wherein the middle part of the lateral range of the blasting slope of each small chamber blasting Kong Zibao of the same row is blasted to two sides in a staggered manner or symmetrically and simultaneously, each small chamber blasting Kong Jian is delayed for 4ms and the row interval is delayed for 10ms, and blasting operation is completed.
Blasting effect: after blasting is completed, the side slope blasting effect is analyzed and summarized, and the result shows that the side slope area to be blasted is blasted, the blasting effect is good, surrounding rock fragments suspended by the reserved side slope after blasting are less, the small open pit is filled with fragments after blasting, the damage to surrounding rock after blasting is less, and the expected envisaged effect is achieved.
Example 2
As shown in fig. 1 to 4, a certain plateau mining area in southwest is in the early stage of construction, the highways of the mining area are not repaired, the area belongs to the plateau region, the average elevation is more than 4000m, the climate belongs to the mountain climate of the plateau, and is particularly dry and cold, the subtropical climate is a wide land, the material is lack, the summer is long in high temperature and rainy, the mineral resource reserves are large, and the mineral resources such as zinc ore, copper ore and iron ore are mainly used. The region has typical Andies mountain landform characteristics, the mountain high slope is steep, the topography is dangerous, the topography condition change is complex, the covering soil layer on the rock stratum is thicker, the slope is softer, the collapse is serious, the day and night air temperature change of the mining area is obvious, the rock mass is subjected to long-term ice and snow freeze thawing and thermal cycle, the rock mass is greatly weathered, the broken rock mass is medium and complete, local joint cracks are relatively developed, the rock mass is penetrated by quartz pulse bodies, the internal structure of the rock mass is damaged, the integral integrity of the rock and the rock mass is poor, main rocks of the region comprise quartz sandstone, calcareous sandstone, marl, sandy mudstone, shale, mudstone, clastic rock, argy sandstone and the like, the pray coefficient f=2-6 belongs to relatively soft to relatively firm rock, a certain influence is caused to construction, the V-shaped mountain is arranged below the highway, the front-stage manual operation machinery is excavated, the upper layer soil is greatly crushed, part of the machinery and personnel are buried, and meanwhile, if the part of the mining machinery is not collapsed, and the floating machinery is suspended and is used for burying again. Therefore, blasting slope cutting is needed, and the concrete process is as follows:
s100: the properties (f=2-6) of the side slope rock mass, the range and the depth of the side slope cracking are mapped and analyzed, the surface layer of the side slope rock mass is found to be a broken rock mass, the burial depth of broken surrounding rock is about 1.7m, the thickness of the covering soil layer exceeds 0.6m, the blasting range is determined according to investigation, and 10 blasting holes and parameters for charging are designed and arranged in total.
S200: and (5) removing the broken rock suspended in the range of the side slope to be blasted and around the side slope by using steel drills.
S300: and (3) lofting the plane position and the corresponding orientation point of the blastholes in the range of the slope to be blasted, manually drawing holes by adopting a spade with sharp top of a spade head 11 and a spoon-shaped structure 12 arranged at the root according to lofting, forming 10 quincuncial-shaped arranged and parallel small chamber blastholes with the aperture of 50cm, the hole depth of 2.0m and the hole spacing of 3.0m, wherein the axis of each small chamber blasthole is perpendicular to the horizontal plane, and the deflection rate of each hole is less than or equal to 1.5%.
S400: after the explosion holes of the small chamber are inspected to be qualified, firstly cleaning scraps in the explosion holes, and then sequentially charging the materials from bottom to top according to the explosion design: firstly, putting a roll of No. 1 rock emulsion explosive (shown in table 1) with the diameter of 145mm into the bottom of a blast hole as an initiating explosive, inserting the initiating explosive into a digital electronic detonator, then pouring 2 bags of ANN-2 type viscous granular explosive (shown in table 2, 25kg per bag) into the blast hole, filling 2-3 woven bags into the top end of the viscous granular explosive, adding the screened quantitative yellow mud, gypsum and liquid adhesive into quantitative tap water, uniformly stirring to form a filling material, and finally filling and tamping the rest part in the blast hole of a small chamber by using the filling material to finish filling.
S500: and each small chamber blasting hole in the blasting range is blasted row by row from bottom to top and each row of charging is blasted hole by hole, wherein the middle part of the lateral range of the blasting slope of each small chamber blasting Kong Zibao of the same row is blasted to two sides in a staggered manner or symmetrically and simultaneously blasted, each small chamber blasting Kong Jian is delayed for 6ms and the row interval is delayed for 30ms, and blasting operation is completed.
Blasting effect: after blasting is completed, the blasting effect is observed, and as the rock slope is excavated mechanically in the early stage, partial collapse is caused, a larger crack is formed, the complex broken slope which is treated by small chamber blasting can be found, the rock and soil body in the blasted area can be successfully blasted completely, the blasted soil and stones are completely thrown to the cliff below, the slope is stable and smooth, the number of dangerous rocks hanging on the slope is almost not large, after the dangerous rocks are treated by steel drills, the excavator can be adopted for continuous construction, and generally, the blasting construction has reached the expected effect, so that the method has certain practicability, economy and high efficiency in blasting the complex rock slope.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. The construction method for blasting the broken rock high-steep side slope under the complex geological condition is characterized by comprising the steps of investigation and analysis, broken rock removal, drilling, charging and blasting, and the steps are as follows:
A. investigation and analysis: mapping and analyzing the property of the side slope rock mass and the range and depth of side slope cracking, and determining the blasting range and parameters for designing blastholes and charging according to investigation;
B. and (3) rock crushing and cleaning: clearing broken rocks suspended in the range to be blasted of the side slope and the periphery of the side slope;
C. drilling: setting out the plane position and the corresponding orientation point of the blasthole in the range of the slope to be blasted, and then manually drawing out the hole or drilling the hole by a drilling machine according to setting out to form a small chamber blasthole;
D. charging: after the explosion holes of the small chamber are inspected to be qualified, sequentially loading explosive, flexible spacers and stuffing from bottom to top according to the explosion design, and embedding an initiating explosive cartridge and a digital electronic detonator in the explosive;
E. blasting: blasting is performed row by row from bottom to top, and each row of charging is initiated hole by hole.
2. The construction method for blasting high-steep side slopes of crushed rock under complex geological conditions according to claim 1, wherein the Prussian coefficient f of the side slope rock mass in the step A is 2-9, the burial depth of the crushed rock mass is not more than 1.5m, the thickness of the covering soil layer is more than 0.5m, and the gradient is more than 60 degrees.
3. The construction method for blasting high-steep side slopes of broken rock under complex geological conditions according to claim 2, wherein the depth of the blasting holes of the small chambers in the step C is 1.5-2.0 m, the aperture is 30-50 cm, the hole spacing is 2.5-3.0 m, and the blasting holes of the small chambers are distributed in a quincuncial shape and are parallel to each other.
4. A method of high and steep slope blasting construction for breaking rock under complex geological conditions according to claim 3, wherein the depth of the small chamber blasthole exceeds the maximum burial depth of the broken rock mass at the corresponding location.
5. The construction method for blasting high-steep side slopes of broken rock under complex geological conditions according to claim 3, wherein the axis of the small chamber blasthole drilled in the step C is inclined to the inner side of the side slope by 0.5-5 degrees perpendicular to the horizontal plane or the axis of the small chamber blasthole, and the manual hole digging is implemented by adopting a spade with a sharp top of a spade head and a spoon structure at the root.
6. The method for blasting construction of high steep side slope of broken rock under complicated geological conditions according to claim 3, 4 or 5, wherein the small chamber blasthole in step D is filled with a roll of rock emulsion explosive and a digital electronic detonator is buried therein, then the top of the rock emulsion explosive is filled with a viscous granular explosive, then the top of the viscous granular explosive is filled with a flexible spacer, and finally the hole is sealed with a filling material and tamped.
7. Root of Chinese characterThe construction method for blasting broken rock high-steep side slope under complex geological conditions according to claim 6, wherein the diameter of the rock emulsion explosive is 145mm, and the density of the explosive roll is 0.95-1.30 g/cm 3 The detonation velocity is 4000-4500 m/s, the high degree is 15-17 mm, the explosive density of the viscous granular explosive is 0.8-1.0 g/cm 3 The explosion speed is not less than 2800m/s, the fierce degree is not less than 18, and the small chamber explosion holes are filled with 1.5-2.0 bags of viscous granular explosive with 25+/-0.5 kg of each bag.
8. The construction method for blasting high-steep side slopes of crushed rock under complex geological conditions according to claim 6, wherein the stuffing is formed by mixing and stirring loess, gypsum and a liquid adhesive, and the liquid adhesive is water-based environment-friendly adhesive, starch adhesive or rubber solution adhesive.
9. The construction method for blasting high-steep side slopes of crushed rock under complex geological conditions according to claim 6, wherein the flexible spacer is 2-3 woven bags, 2-5 layers of bubble buffer films or 0.5-5 cm of foam pads which are overlapped with each other.
10. The construction method for blasting high-steep side slopes of broken rock under complex geological conditions according to claim 6, wherein in the step E, blasting holes of small chambers in the same row are detonated alternately or symmetrically and simultaneously from the middle part of the transverse range of the pre-blasting slope to two sides, blasting Kong Jian of each small chamber is delayed for 4-6 ms, and inter-row delay is 4-50 ms.
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