CN109870085A - A kind of middle weathering sandstone layer cubic meter of stone short-delay blasting excavation construction method - Google Patents
A kind of middle weathering sandstone layer cubic meter of stone short-delay blasting excavation construction method Download PDFInfo
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- CN109870085A CN109870085A CN201910220124.3A CN201910220124A CN109870085A CN 109870085 A CN109870085 A CN 109870085A CN 201910220124 A CN201910220124 A CN 201910220124A CN 109870085 A CN109870085 A CN 109870085A
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Abstract
The invention discloses a kind of middle weathering sandstone layer cubic meter of stone short-delay blasting excavation construction methods, are related to blasting construction methods for rock excavation technical field, the present invention is the following steps are included: (1) smooth drilling machine working space；(2) drilling and powder charge；(3) explosion is blown out；(4) slope trimming, in step (2), cutting middle section rock excavation uses standing method, and cut slope part rock excavation uses photoface exploision method, and the present invention has the advantages that the control of explosion strength is accurate, blasting quality is high, guarantees that construction period carries out on time.
Description
Technical field
The present invention relates to blasting construction methods for rock excavation technical fields, more particularly to a kind of middle weathering sandstone layer cubic meter of stone
Short-delay blasting excavation construction method.
Background technique
Cut subgrade lower than original ground is known as cutting, refers to roadbed form made of excavating downwards from original place, it can rise
The effect of ridge mouthful elevation control is passed through to mitigation road longitudinal grade or ridge crossing line.Cutting excavation refers to the construction of cut subgrade, Ying Gen
According to concrete condition, using lateral overall with drivage method, i.e., the one or both ends of the entire section of cutting along longitudinal direction are excavated forward.Cutting
The geological stratification encountered when excavation generally has intense weathering munstone, middle weathered mudstone, intense weathering soft rock, middle weathered sandstone, wherein apoplexy
Change sandstone layer (V class stone) and belongs to time hard stone, it is motionless with excavator excavation when to rock excavation, then it can be to be excavated again after explosion
Construction, cannot use great explosion, it is therefore an objective to which ensure roadbed side slope stablizes and close on house and the safety of personnel, therefore reasonable cloth
It is most important to set blasthole position.
It should be rationally designed for the blast working scheme before the cutting excavation of middle weathering sandstone layer soil matrix, cutting middle part
Divide and side slope part should use different blasting schemes, preferable chasm structuref could be formed, it is existing to be directed to middle weathered sandstone
The Cutting Excavation Blasting excavation construction of layer uses same blasting procedure substantially, it is therefore an objective to reduce difficulty of construction, but when the later period excavates by
It is poor in blasting quality, it is also necessary to which that the equipment such as excavator and drilling machine are modified, and finishing work amount is bigger, cause to apply instead
The work duration is elongated.
Therefore above-mentioned technical problem how is solved, there is very much realistic meaning to those skilled in the art.
Summary of the invention
It is an object of the invention to: it is adopted substantially to solve the existing Cutting Excavation Blasting excavation construction for middle weathering sandstone layer
With same blasting procedure, global blowup quality is poor, and the later period also needs various equipment to be modified when excavating, finishing work amount
It is bigger, the technical problem that the construction period is elongated is caused instead, and the present invention provides a kind of middle weathering sandstone layer cubic meter of stone short-delay blasting
Excavation construction method.
The present invention specifically uses following technical scheme to achieve the goals above:
A kind of middle weathering sandstone layer cubic meter of stone short-delay blasting excavation construction method, comprising the following steps: (1) smooth drilling machine operation
Place；(2) drilling and powder charge；(3) explosion is blown out；(4) slope trimming, in step (2), cutting middle section rock excavation is adopted
With standing method, cut slope part rock excavation uses photoface exploision method.
Further, the technical parameter of cutting middle section steel for shot is as follows:
A) when to dig the deep location for being less than 5m:
1. δ: δ=75 ° of blasthole inclination angle；
2. blasthole diameter d:d=40mm；
3. step height H:H >=(0.060-0.064) d, i.e. H >=2.4-2.56mm take H=4m here；
4. blast hole depth h:h is approximately equal to the deep depth of digging or step height H, and h >=0.8m, h=4m is taken here；
5. minimum burden W:W=(0.6-0.8) H, takes W=0.8H=3.2m here；
6. blasthole bottom over drilling depth h1:h1=0.25W=0.8m；
7. stemming length h0:h0=0.9W=2.88m；
8. blasthole spacing a: a=(1.4-2.0) W when using spark detonation takes a=2W=6.4m, when using electricity here
A=(0.8-2.0) W when power is detonated, takes a=1.2W=3.84m here；
9. blasthole array pitch b:b=W=3.2m；
10. each hole charge Q:Q=qaWH, q are unit amount of consumption of drugs, q=0.3kg/m is taken here3, when using spark
Q=24.576kg when detonation, Q=14.7456kg when using power initiation；
B) when to dig the deep location for being greater than 5m:
1. δ: δ=80 ° of blasthole inclination angle；
2. blasthole diameter d:d=100mm；
3. step height H:H=10m；
4. blast hole depth h:h=0.15H=1.5m；
5. minimum burden W:W=(0.6-0.9) H, takes W=0.7H=7m here；
6. blasthole bottom over drilling depth h1:h1=0.2W=1.4m；
7. stemming length h0:h0=0.8W=5.6m；
8. blasthole spacing a:a=mW, m are density coefficient, m=1.2, a=8.4m are taken here；
9. blasthole array pitch b:b=a=8.4m；
10. each hole charge Q:Q=qaWH, q are unit amount of consumption of drugs, q=0.3kg/m is taken here3, Q=176.4kg.
Further, the technical parameter of cut slope part steel for shot is as follows:
1. blasthole diameter D:D=50mm；
2. step height H1:H1=3m；
3. minimum burden W1:W1=(7-20) D, takes W1=12D=0.6m here；
4. blasthole spacing a1:a1=(0.6-0.8) W1, takes a1=0.6W1=0.36m here；
5. single hole explosive payload Q1=qa1W1H1, q are standing unit consumption dose, q=1.2kg/m is taken here3, Q1=
0.7776kg。
Further, in step (1), smooth compacting is carried out to working space, the plane error on ground is controlled in 5cm
Within, use drilling machine for hydraulic down-the-hole drill.
Further, in step (4), cooperate excavator and dumper to be cut clearly with bull-dozer after explosion, adopt simultaneously
It is modified with excavator equipped hydraulic hammer side slope.
Beneficial effects of the present invention are as follows:
1, the present invention uses standing method and photoface exploision method for the cutting excavation construction of middle weathering sandstone layer type
Two kinds of blasting methods are applied in combination, and cutting middle section rock excavation uses standing method, and the cut slope part cubic meter of stone is opened
It digs and uses photoface exploision method, optimal reference data and empirical equation are obtained according to multiple live blasting experiment, thus respectively to two
The steel for shot technical parameter of kind blasting method carries out detailed design, reasonable blast working data is obtained, according to the construction number
According to blast working is carried out, under the premise of guaranteeing the safety for stablizing and closing on house and personnel of roadbed side slope, accurately control quick-fried
Broken strength makes its control in OK range, and blasting quality is high, so that later period finishing construction work amount is small, to guarantee to construct
Period goes on smoothly.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually herein
The component of the embodiment of the present invention shown in place can be arranged and be designed with a variety of different configurations.
Therefore, the model of claimed invention is not intended to limit to the detailed description in the embodiment of the present invention below
It encloses, but is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art's spirit is not being made
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of creative work.
It should be noted that the relational terms of term " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that include a series of elements process, method, article or equipment not only include those elements, but also
Further include other elements that are not explicitly listed, or further include for this process, method, article or equipment it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described
There is also other identical elements in the process, method, article or equipment of element.
In order to which those skilled in the art better understand the present invention, below following embodiment to the present invention make further it is detailed
Thin description.
Embodiment 1
The present embodiment provides a kind of middle weathering sandstone layer cubic meter of stone short-delay blasting excavation construction methods, comprising the following steps: (1)
Smooth drilling machine working space；(2) drilling and powder charge；(3) explosion is blown out；(4) slope trimming, in step (2), cutting middle part
Rock excavation is divided to use standing method, cut slope part rock excavation uses photoface exploision method.
Further, the technical parameter of cutting middle section steel for shot is as follows:
A) when to dig the deep location for being less than 5m:
1. δ: δ=75 ° of blasthole inclination angle；
2. blasthole diameter d:d=40mm；
3. step height H:H >=(0.060-0.064) d, i.e. H >=2.4-2.56mm take H=4m here；
4. blast hole depth h:h is approximately equal to the deep depth of digging or step height H, and h >=0.8m, h=4m is taken here；
5. minimum burden W:W=(0.6-0.8) H, takes W=0.8H=3.2m here；
6. blasthole bottom over drilling depth h1:h1=0.25W=0.8m；
7. stemming length h0:h0=0.9W=2.88m；
8. blasthole spacing a: a=(1.4-2.0) W when using spark detonation takes a=2W=6.4m, when using electricity here
A=(0.8-2.0) W when power is detonated, takes a=1.2W=3.84m here；
9. blasthole array pitch b:b=W=3.2m；
10. each hole charge Q:Q=qaWH, q are unit amount of consumption of drugs, q=0.3kg/m is taken here3, when using spark
Q=24.576kg when detonation, Q=14.7456kg when using power initiation；
B) when to dig the deep location for being greater than 5m:
1. δ: δ=80 ° of blasthole inclination angle；
2. blasthole diameter d:d=100mm；
3. step height H:H=10m；
4. blast hole depth h:h=0.15H=1.5m；
5. minimum burden W:W=(0.6-0.9) H, takes W=0.7H=7m here；
6. blasthole bottom over drilling depth h1:h1=0.2W=1.4m；
7. stemming length h0:h0=0.8W=5.6m；
8. blasthole spacing a:a=mW, m are density coefficient, m=1.2, a=8.4m are taken here；
9. blasthole array pitch b:b=a=8.4m；
10. each hole charge Q:Q=qaWH, q are unit amount of consumption of drugs, q=0.3kg/m is taken here3, Q=176.4kg.
Further, the technical parameter of cut slope part steel for shot is as follows:
1. blasthole diameter D:D=50mm；
2. step height H1:H1=3m；
3. minimum burden W1:W1=(7-20) D, takes W1=12D=0.6m here；
4. blasthole spacing a1:a1=(0.6-0.8) W1, takes a1=0.6W1=0.36m here；
5. single hole explosive payload Q1=qa1W1H1, q are standing unit consumption dose, q=1.2kg/m is taken here3, Q1=
0.7776kg。
Further, in step (1), smooth compacting is carried out to working space, the plane error on ground is controlled in 5cm
Within, use drilling machine for hydraulic down-the-hole drill.
Further, in step (4), cooperate excavator and dumper to be cut clearly with bull-dozer after explosion, adopt simultaneously
It is modified with excavator equipped hydraulic hammer side slope.
The present invention uses standing method and photoface exploision method two for the cutting excavation construction of middle weathering sandstone layer type
Kind blasting method is applied in combination, and cutting middle section rock excavation uses standing method, cut slope part rock excavation
Using photoface exploision method, optimal reference data and empirical equation are obtained according to multiple live blasting experiment, thus respectively to two kinds
The steel for shot technical parameter of blasting method carries out detailed design, reasonable blast working data is obtained, according to the construction data
Blast working is carried out, under the premise of guaranteeing the safety for stablizing and closing on house and personnel of roadbed side slope, accurately controls explosion
Strength makes its control in OK range, and blasting quality is high, so that later period finishing construction work amount is small, to guarantee construction week
Phase goes on smoothly.
The above, only presently preferred embodiments of the present invention, are not intended to limit the invention, patent protection model of the invention
It encloses and is subject to claims, it is all with equivalent variations made by specification of the invention, it similarly should be included in the present invention
Protection scope in.
Claims (5)
1. a kind of middle weathering sandstone layer cubic meter of stone short-delay blasting excavation construction method, comprising the following steps: (1) smooth drilling machine operation field
Ground；(2) drilling and powder charge；(3) explosion is blown out；(4) slope trimming, which is characterized in that in step (2), cutting middle section
Rock excavation uses standing method, and cut slope part rock excavation uses photoface exploision method.
2. a kind of middle weathering sandstone layer cubic meter of stone short-delay blasting excavation construction method according to claim 1, which is characterized in that
The technical parameter of cutting middle section steel for shot is as follows:
A) when to dig the deep location for being less than 5m:
1. δ: δ=75 ° of blasthole inclination angle；
2. blasthole diameter d:d=40mm；
3. step height H:H >=(0.060-0.064) d, i.e. H >=2.4-2.56mm take H=4m here；
4. blast hole depth h:h is approximately equal to the deep depth of digging or step height H, and h >=0.8m, h=4m is taken here；
5. minimum burden W:W=(0.6-0.8) H, takes W=0.8H=3.2m here；
6. blasthole bottom over drilling depth h1:h1=0.25W=0.8m；
7. stemming length h0:h0=0.9W=2.88m；
8. blasthole spacing a: a=(1.4-2.0) W when using spark detonation is taken a=2W=6.4m here, is risen when using electric power
A=(0.8-2.0) W, takes a=1.2W=3.84m here when quick-fried；
9. blasthole array pitch b:b=W=3.2m；
10. each hole charge Q:Q=qaWH, q are unit amount of consumption of drugs, q=0.3kg/m is taken here3, when using spark detonation
Q=24.576kg, Q=14.7456kg when using power initiation；
B) when to dig the deep location for being greater than 5m:
1. δ: δ=80 ° of blasthole inclination angle；
2. blasthole diameter d:d=100mm；
3. step height H:H=10m；
4. blast hole depth h:h=0.15H=1.5m；
5. minimum burden W:W=(0.6-0.9) H, takes W=0.7H=7m here；
6. blasthole bottom over drilling depth h1:h1=0.2W=1.4m；
7. stemming length h0:h0=0.8W=5.6m；
8. blasthole spacing a:a=mW, m are density coefficient, m=1.2, a=8.4m are taken here；
9. blasthole array pitch b:b=a=8.4m；
10. each hole charge Q:Q=qaWH, q are unit amount of consumption of drugs, q=0.3kg/m is taken here3, Q=176.4kg.
3. a kind of middle weathering sandstone layer cubic meter of stone short-delay blasting excavation construction method according to claim 2, which is characterized in that
The technical parameter of cut slope part steel for shot is as follows:
1. blasthole diameter D:D=50mm；
2. step height H1:H1=3m；
3. minimum burden W1:W1=(7-20) D, takes W1=12D=0.6m here；
4. blasthole spacing a1:a1=(0.6-0.8) W1, takes a1=0.6W1=0.36m here；
5. single hole explosive payload Q1=qa1W1H1, q are standing unit consumption dose, q=1.2kg/m is taken here3, Q1=
0.7776kg。
4. a kind of middle weathering sandstone layer cubic meter of stone short-delay blasting excavation construction method according to claim 1, which is characterized in that
In step (1), smooth compacting is carried out to working space, the plane error on ground is controlled within 5cm, uses drilling machine for liquid
Press down-the-hole drill.
5. a kind of middle weathering sandstone layer cubic meter of stone short-delay blasting excavation construction method according to claim 1, which is characterized in that
In step (4), excavator and dumper is cooperated to be cut clearly with bull-dozer after explosion, while using excavator equipped hydraulic hammer pair
Side slope is modified.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529771A (en) * | 2021-07-23 | 2021-10-22 | 湖北工业大学 | Method for blasting and excavating open caisson by using rock foundation of jack and constructing shaft |
| CN113624083A (en) * | 2021-07-12 | 2021-11-09 | 中国化学工程重型机械化有限公司 | Cutting earthwork construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793486A (en) * | 2009-09-23 | 2010-08-04 | 中交二公局第六工程有限公司 | High-grade highway rock cutting blasting construction process |
| CN102230769A (en) * | 2011-06-16 | 2011-11-02 | 汇通路桥建设集团有限公司 | Multi-row micro-differential roadbed deep hole blasting construction method |
| CN107063014A (en) * | 2017-05-23 | 2017-08-18 | 安徽江南***工程有限公司 | Cutting shallow hole step controlled blasting slope cutting method in complex environment |
| CN108360527A (en) * | 2018-03-07 | 2018-08-03 | 中铁十九局集团第七工程有限公司 | A kind of earthwork evacuation construction method |
-
2019
- 2019-03-21 CN CN201910220124.3A patent/CN109870085A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101793486A (en) * | 2009-09-23 | 2010-08-04 | 中交二公局第六工程有限公司 | High-grade highway rock cutting blasting construction process |
| CN102230769A (en) * | 2011-06-16 | 2011-11-02 | 汇通路桥建设集团有限公司 | Multi-row micro-differential roadbed deep hole blasting construction method |
| CN107063014A (en) * | 2017-05-23 | 2017-08-18 | 安徽江南***工程有限公司 | Cutting shallow hole step controlled blasting slope cutting method in complex environment |
| CN108360527A (en) * | 2018-03-07 | 2018-08-03 | 中铁十九局集团第七工程有限公司 | A kind of earthwork evacuation construction method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624083A (en) * | 2021-07-12 | 2021-11-09 | 中国化学工程重型机械化有限公司 | Cutting earthwork construction method |
| CN113529771A (en) * | 2021-07-23 | 2021-10-22 | 湖北工业大学 | Method for blasting and excavating open caisson by using rock foundation of jack and constructing shaft |
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