CN103234405A - Deep hole crack control blasting method for grouting reinforced surrounding rock - Google Patents
Deep hole crack control blasting method for grouting reinforced surrounding rock Download PDFInfo
- Publication number
- CN103234405A CN103234405A CN2013101597265A CN201310159726A CN103234405A CN 103234405 A CN103234405 A CN 103234405A CN 2013101597265 A CN2013101597265 A CN 2013101597265A CN 201310159726 A CN201310159726 A CN 201310159726A CN 103234405 A CN103234405 A CN 103234405A
- Authority
- CN
- China
- Prior art keywords
- explosive
- grouting
- boring
- crack
- drilled holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a deep hole crack control blasting method for a grouting reinforced surrounding rock. The deep hole crack control blasting method comprises the following steps: (1) drilling holes on a rock body needing grouting, wherein the diameter of the drilled holes is 50-120mm, the depth of the drilled holes is 6-9m, and the distance between two drilled holes is 3-9m; (2) placing explosive containing tubes in the drilled holes, and filling stick explosive into the explosive containing tubes, wherein each explosive containing tube is formed by welding two arc-shaped plates in an overlapping mode, the decoupling coefficient of the stick explosive is 1.5-2.5, and the density of linear explosive is 1.1-1.7kg/l; and (3) performing presplitting blasting on the explosive in the drilled holes after explosion, and then filling grouting materials into cracks of the drilled holes. A plurality of cracks can be formed in a stratum, blast holes can be reserved and cannot collapse, grouting dispersing range is expanded, accordingly effective grouting curtains can be formed, the effect of grouting and water plugging can be achieved, and the surrounding rock can be reinforced.
Description
Technical field
The present invention relates to a kind of deep hole Crack Control blasting method of grouting reinforcement rock, belong to Geotechnical Engineering and explosion field.
Background technology
At present, have to some results qualitatively in the research aspect the grouting and reinforcing rock mass strength both at home and abroad, but also be not applied to practice; The factor that influences the grouting and reinforcing rock mass strength is a lot, can not improve with slip casting intensity simply and how much weigh.
The crack of rock mass is the irregular plane of fracture that forms under the natural endowment, its atypical characteristic influences the flow event of slurries consumingly, and the distribution in crack, surface characteristics, has randomness, rock mass hole or crack are the passages that slurries flow, because the difference of rock mass structure causes the mode of slurry stream warp different with approach, thereby produce different slip casting effects, also do not have the deep hole Crack Control blasting method of effective grouting reinforcement rock at present.
Summary of the invention
At the deficiencies in the prior art part, the present invention aims to provide a kind of deep hole Crack Control blasting method of grouting reinforcement rock, can effectively improve the effect of grouting reinforcement rock at the distribution atypical characteristic of rock cranny.
For solving the problems of the technologies described above the technical solution used in the present invention: a kind of deep hole Crack Control blasting method of grouting reinforcement rock may further comprise the steps:
(1) to the rock mass that the needs slip casting hole of drilling, bore diameter is 50-120 millimeters, and drilling depth is 6-9 meters, and the spacing of wells is 3-9 meters;
(2) in described boring, put into the powder charge pipe, the explosive cartridge of in the powder charge pipe, packing into, this powder charge pipe is formed by the joint welding of two arc sheet material, and the not coupling coefficient value of explosive cartridge is 1.5-2.5, and traditional thread binding explosive density is 1.1-1.7 kgm
-1, detonator in colligation on the explosive that installs is inserted in the explosive detonator as apparatus to cause bursting, and detonator is caused outside the boring, with the good big gun of yellow mud shutoff hole, detonates by compound electric explosion network, detonator system;
(3) detonate that explosive carries out presplit blasting in the back boring, under the burst pressure effect, make the rock mass between the described boring produce the crack of running through; The length of the through crack that produces between the boring is injected injecting paste material in the crack of described boring then greater than 150～120 times boring radius.
Principle of the present invention is: the method that adopts blast generation through crack between a kind of boring, after blast, the wall of a borehole is formed the blast pressure pulse, thereby reach the purpose that in rock mass, generates through crack, increase the distance of crack growth and do not cause hole wall seriously broken. prolonged action time simultaneously and made blast generate the easy injection of gas in the crack, drive the farther of crack propagation, enlarged the scope of fracturing, the most direct exercising result of deep hole Crack Control explosion is exactly to impel the crack that the rock mass generation runs through between the boring and the crack is expanded, crack in the rock mass increases considerably and expands, and has formed interconnected fracture net in a big way between injected hole.
The invention has the beneficial effects as follows: adopt patented technology of the present invention, after the explosion, can in the rock stratum, form a lot of cracks, and the big gun hole still can keep, not subside, enlarged the range of scatter of slip casting, thereby form effective grouting curtain, reach the grouting for water blocking effect and play the effect of reinforcing country rock, and can reduce the quantity of injected hole.
Description of drawings
Fig. 1 is powder charge tubular construction schematic diagram;
Fig. 2 is powder charge scheme of installation in the powder charge pipe;
In the accompanying drawing: 1 powder charge pipe, 2 paddings, 3 explosive cartridges, 4 detonators, 5 lead-in wires.
The specific embodiment
The invention will be further described below in conjunction with specific embodiment.
Example one,
As shown in Figure 1 and Figure 2, certain rock mass slope engineering, rock mass is based on limestone, wherein, firmness of rock coefficient f=6-7 is about formation dip 75 degree, water content is bigger, and there is water on the top layer for following 2 meters, behind the slope toe excavation, side slope rock stratum instability, reserve domatic beyond the side slope, with the rig hole of drilling, 70 millimeters of bore diameters, drilling depth is 6 meters, and adjacent distance between borehole is 6 meters.In described boring, put into powder charge pipe 1, the explosive cartridge 3 of in powder charge pipe 1, packing into, this powder charge pipe 1 is formed by the joint welding of two arc sheet material, and the not coupling coefficient value of explosive cartridge 3 is 1.5, and linear charging density is 1.1 kgm
-1Primacord in colligation on the explosive cartridge 3 that installs, after reaching the requirement of engineering design Deng the explosive length that installs primacord, detonator 4 is inserted in the explosive as apparatus to cause bursting, and detonator lead-in wire 5 caused outside the boring,, detonate by custom-designed compound electric explosion network, detonator system as padding 1 shutoff big gun hole with yellow mud, then injecting paste material is injected after the explosion and reinforce the back excavation construction in the crack of described boring.Injecting paste material is selected fine sand, cement, waterglass for use, plasticity index 10-20, Portland cement, modulus of water glass is 2.8-3.3, and concentration 38-42Be, Be are Baume concentration, namely immerse the concentration of numeric representation solution measured in the solution with Baume hydrometer, in work progress, at tomography and crushed zone taked on a small quantity, repeatedly, technological means such as repetition, intermittence, guarantee ejection for water plugging and surrounding rock consolidation effect.Grouting mode is taked the segmentation downward grouting according to the actual conditions of injected hole, and the grouting for water blocking effect is fine, and actual grouting for water blocking rate surpasses 91%, and the massif slope rock mass is very stable always.
Claims (1)
1. the deep hole Crack Control blasting method of a grouting reinforcement rock is characterized in that may further comprise the steps:
(1) to the rock mass that the needs slip casting hole of drilling, bore diameter is 50-120 millimeters, and drilling depth is 6-9 meters, 3-9 meters of the spacings of wells;
(2) in described boring, put into powder charge pipe (1), the explosive cartridge (3) of in powder charge pipe (1), packing into, this powder charge pipe (1) is formed by the joint welding of two arc sheet material, and the not coupling coefficient value of explosive cartridge (3) is 1.5-2.5, and traditional thread binding explosive density is 1.1-1.7 kgm
-1, detonator in colligation on the explosive that installs is inserted in the explosive detonator (4) as apparatus to cause bursting, and detonator lead-in wire (5) is caused outside the boring, with the stifled good big gun hole of padding (2), detonates by compound electric explosion network, detonator system;
(3) detonate that explosive carries out presplit blasting in the back boring, under quick-fried living pressure effect, make the rock mass between the described boring produce the crack of running through; The length of the through crack that produces between the boring is injected injecting paste material in the crack of described boring then greater than 150～120 times boring radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101597265A CN103234405A (en) | 2013-05-03 | 2013-05-03 | Deep hole crack control blasting method for grouting reinforced surrounding rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101597265A CN103234405A (en) | 2013-05-03 | 2013-05-03 | Deep hole crack control blasting method for grouting reinforced surrounding rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103234405A true CN103234405A (en) | 2013-08-07 |
Family
ID=48882457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101597265A Pending CN103234405A (en) | 2013-05-03 | 2013-05-03 | Deep hole crack control blasting method for grouting reinforced surrounding rock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103234405A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375515A (en) * | 2021-07-21 | 2021-09-10 | 中国十五冶金建设集团有限公司 | Blasting compaction device and method for blasting compaction of soil slope by using same |
| CN113432500A (en) * | 2021-08-06 | 2021-09-24 | 安徽理工大学 | Blasting method for fracture-containing dangerous rock mass |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040075612A (en) * | 2003-02-22 | 2004-08-30 | 김일환 | Liner for blasting and method for blasting in use of the same |
| CN102109304A (en) * | 2010-11-30 | 2011-06-29 | 中国矿业大学(北京) | Directional rock blasting crack propagation method and device |
| CN102878874A (en) * | 2012-10-09 | 2013-01-16 | 北京科技大学 | Deep-hole pre-splitting blasting grouting method |
-
2013
- 2013-05-03 CN CN2013101597265A patent/CN103234405A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040075612A (en) * | 2003-02-22 | 2004-08-30 | 김일환 | Liner for blasting and method for blasting in use of the same |
| CN102109304A (en) * | 2010-11-30 | 2011-06-29 | 中国矿业大学(北京) | Directional rock blasting crack propagation method and device |
| CN102878874A (en) * | 2012-10-09 | 2013-01-16 | 北京科技大学 | Deep-hole pre-splitting blasting grouting method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375515A (en) * | 2021-07-21 | 2021-09-10 | 中国十五冶金建设集团有限公司 | Blasting compaction device and method for blasting compaction of soil slope by using same |
| CN113375515B (en) * | 2021-07-21 | 2023-01-17 | 中国十五冶金建设集团有限公司 | Blasting compaction device and method for blasting compaction of soil slope by using same |
| CN113432500A (en) * | 2021-08-06 | 2021-09-24 | 安徽理工大学 | Blasting method for fracture-containing dangerous rock mass |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Huang et al. | Hydraulic fracturing after water pressure control blasting for increased fracturing | |
| CN106194244B (en) | Lower permeability seam liquid phase CO2Phase transformation fracturing is anti-reflection grid type gas pumping method | |
| CN102878874A (en) | Deep-hole pre-splitting blasting grouting method | |
| CN105201448B (en) | Block water slip casting method for blocking in a kind of high-pressure high-flow water gushing channelway | |
| CN104005415B (en) | The efficient forming construction method thereof of diaphram wall in light weathered granite | |
| CN107355229B (en) | The construction method of deep hole smooth surface Tunnel Blasting system and the tunnel | |
| CN107060834A (en) | Grout injection control technique is oozed in drainage slowly under back rich water broken condition | |
| CN104482815A (en) | Tunnel smooth blasting method | |
| CN100434653C (en) | Blasting type cave well completion technological method of coal layer gas well | |
| CN111365002B (en) | Ground pre-grouting method for small-section high wellbore in complex stratum | |
| CN105737697B (en) | A kind of outlining blasting method suitable for joints development rock mass | |
| CN104295309B (en) | A kind of jet perforating hollow grouting anchor and its construction method with framework of steel reinforcement | |
| CN103362117A (en) | Full-section grouting method for grouting section | |
| CN204718510U (en) | A kind of novel joint-cutting quick-burning charge monoblock type photoface exploision device | |
| CN107130988A (en) | A kind of anti-reflection slip casting Composite Bolt of liquid carbon dioxide explosion | |
| Huang et al. | Field investigation into directional hydraulic fracturing for hard roof in Tashan Coal Mine | |
| CN102817633B (en) | The device drawing out methane and the pre-splitting method of the controlled blasting of deep hole crack | |
| CN103233738A (en) | Comprehensive weakening method of top coal of heavy-pitch super high seam | |
| CN109737840B (en) | Multi-tunnel construction method based on soft interlayer | |
| CN104596375A (en) | Fully mechanized excavation construction method for rock roadway | |
| WO2022247258A1 (en) | Extra-thick coal seam upper layer old goaf roof reconstruction method and construction method | |
| CN103835723A (en) | Comprehensive pretreatment method for shaft penetration in mined-out area stratum | |
| CN108222882A (en) | Inwash individual well multi-section multi-layer slip casting new casing and construction method | |
| CN115749713A (en) | Rock stratum frequency conversion pulse fracture network fracturing method and equipment | |
| CN107288606B (en) | Method for artificially building hot dry rock thermal reservoir |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130807 |