CN1330424C - Static breaking agent for water conservation project and its preparation method - Google Patents
Static breaking agent for water conservation project and its preparation method Download PDFInfo
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- CN1330424C CN1330424C CNB031189016A CN03118901A CN1330424C CN 1330424 C CN1330424 C CN 1330424C CN B031189016 A CNB031189016 A CN B031189016A CN 03118901 A CN03118901 A CN 03118901A CN 1330424 C CN1330424 C CN 1330424C
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Abstract
The present invention belongs to a static breaking agent. The static breaking agent for water conservation projects has a main component of over burnt CaO and is characterized in that proper quantity of light burnt granular CaO is added, and addition weight proportion is 1% to 16%. The preparation method of the static breaking agent for water conservation projects has the steps that 1, the proper quantity of light burnt granular CaO is added in over burnt CaO fine powder, and the addition weight proportion is 1% to 16%; 2, the static breaking agent for water conservation projects is put in a water permeable paper cylinder made of non-woven fabrics and is compacted to required medicine charging density, and the breaking agent is prepared into rolls. The present invention provides a static breaking agent and a construction technique which are simultaneously suitable for water conditions, and the present invention solves the technical problem that conventional blasting technique can not be used under water and can only be used for static breaking and solves the problem of the medicine charging of horizontal or upward blast holes. The static breaking agent has the advantages of short cracking time, large expansion pressure, good breaking effect, high safety, simple use, low cost, etc.
Description
Technical field
The invention belongs to static fracture agent, be applicable to that particularly water conservancy project carries out cracking agent of static crushing and preparation method thereof.
Background technology
In research and engineering application, the existing static fracture agent main materials that adopt with the burning calcium oxide more, effect is preferably all arranged when fractured rock, concrete and rare armored concrete, but running into humidity, having under the environment of water, existing cracking agent ubiquity can't powder charge and effectively broken disadvantage, particularly in the middle of hydraulic engineering.
Summary of the invention
At above weak point, the purpose of this invention is to provide and a kind ofly can be suitable for static fracture agent under the water condition and preparation method thereof simultaneously, it has can regulate rupture time, advantage that cost is low.
Technical scheme of the present invention is: water conservancy project static fracture agent, main component are burning CaO, and its difference is to add an amount of light-burned granular CaO, and it adds weight is 1%～16%, and described light-burned CaO particle is 1-5mm.
1), add an amount of light-burned granular CaO in burning CaO fine powder water conservancy project realizes as follows with the preparation method of static fracture agent:, it adds weight is 1%～16%, and described light-burned CaO particle is 1-5mm; 2), in the paper mold cylinder of packing water conservancy project into nonwoven matter permeable with static fracture agent, and it is closely knit to the degree of packing that requires, cracking agent rolling type, cracking agent rolling type, water conservancy project is diameter * length=(30～75) mm * (200～400) mm with the coiled material specification of static agent.
In order to obtain the best hydration reaction speed and the maximum bulbs of pressure,,, play catalytic action simultaneously again to promote the hydration reaction speed of CaO according to hot spot theory suitable composition that adds the light-burned CaO of graininess in the prescription of former static fracture agent.The hydration reaction of CaO is relevant with particle, and the thin more hydration reaction of granularity is fast more, and the thick more hydration reaction of granularity is slow more.Quote hot spot theory according to this character, in cracking agent, suitably add light-burned CaO particle, because of particle thicker, reaction heating in early stage slowly after meeting water, for powder charge and initial set provide the assurance time, these focuses continue diffusion subsequently until total overall reaction, have so both accelerated hydration reaction speed, can make the volumetric expansion pressure of hard burning CaO reach maximum again.
Volume type cracking agent is made the volume type, do not scatter and disappear even in water environment, can not take place to drift about yet, its water absorption state that in 60S, promptly reaches capacity greatly, water absorption rate is between 23～26%, outside water again can't immerse, under any circumstance all guarantee the best water requirement of cracking agent hydration reaction, also solved the powder charge problem of level or up-hole.
Description of drawings
Fig. 1 is the hydration reaction speed curve diagram of water conservancy project with static fracture agent
Fig. 2 is the hydration swelling pressue-graph of water conservancy project with static fracture agent
The specific embodiment
Water conservancy project static fracture agent, Main Ingredients and Appearance are burning CaO, add an amount of light-burned CaO, and its addition accounts for 1%～16% of gross weight.
Described light-burned CaO particle is 1-5mm.
The ratio of mud is 22～30%.
The water conservancy project preparation method of static fracture agent, 1), in burning CaO fine powder, add an amount of light-burned granular CaO realizes as follows:, it adds weight is 1%～16%, 2), in the paper mold cylinder of packing water conservancy project into nonwoven matter permeable with static fracture agent, and closely knit to the degree of packing that requires, cracking agent rolling type.
Described water conservancy project is diameter * length=(3075) mm * (200～400) mm with the coiled material specification of cracking agent.
Water conservancy project is burning CaO with the Main Ingredients and Appearance of static fracture agent, and CaO and water carry out following hydration reaction: CaO+H
2O=Ca (OH)
2+ 15.5 kilocalories/gram molecule, its best ratio of mud is: 23～26%.Key problem in technology of the present invention: the one, control hydration reaction speed overcomes sluggish under low temperature (water-cooled) condition, the difficult problem that cracking time is oversize; The 2nd, overcome the blast hole projectile filling problem that has under the water condition.According to the physicochemical properties of lime, the wet digestion R value＞20C/ branch of soft burnt lime; Wet digestion R value＜2 of hard burnt lime ℃/minute, soft burnt lime has the not enough characteristics of the fast and broken expansive force of reaction speed, and burnt lime then has the big characteristics of slow excessively, the broken expansive force of reaction speed firmly.Because lime has above two kinds of character, in the prescription of former static fracture agent, suitably increased the composition of the light-burned CaO of graininess according to hot spot theory, to promote the hydration reaction speed of CaO, play catalytic action simultaneously again.The hydration reaction of CaO is relevant with particle, and the thin more hydration reaction of granularity is fast more, and the thick more hydration reaction of granularity is slow more.Quote hot spot theory according to this character, in cracking agent, suitably add light-burned CaO particle, because of particle thicker, reaction heating in early stage slowly after meeting water, for powder charge and initial set provide the assurance time, these focuses continue diffusion subsequently until total overall reaction, have so both accelerated hydration reaction speed, can make the volumetric expansion pressure of hard burning CaO reach maximum again.
Key of the present invention is to adopt burning CaO as main material (accounting for 65～98%), add an amount of light-burned CaO (1～16%) simultaneously, its addition is according to temperature, the difference of model and changing to some extent, adding technology is that adding is stirred in blending in original formulation, also can stir adding separately before powder charge.
The cracking agent that uses is the bulk type product at present, is poured in the construction to add in the container directly to inject the big gun hole after water stirs into pasty state.But under environmental condition with water, cracking agent in bulk can't be constructed.Calculated as can be known by reaction equation, guarantee that it is 24.3% that the complete aquation of CaO needs water weight, if immerse excessive water in powder charge process, the reaction speed and the bulbs of pressure can reduce greatly.For this reason, through the test of many times analysis, the water conservancy project cracking agent is made the volume type, the constructing operation of the hydraulic engineering of being more convenient for.
Water conservancy project with cracking agent rolling technology is: in the production of cracking agent, and in the paper mold cylinder of packing cracking agent into nonwoven matter permeable, and closely knit to the degree of packing that requires.
During use, powder stick is immersed certain hour in the water, and (30～60s), order is packed in the big gun hole and tamping gets final product then.Even volume type cracking agent can not take place to drift about in water environment yet and scatter and disappear, its water absorption state that in 60S, promptly reaches capacity greatly, water absorption rate is between 23～26%, and outside water again can't immerse, and has under any circumstance all guaranteed the best water requirement of cracking agent hydration reaction.
The invention provides a kind of static fracture agent and construction technology that can be suitable for simultaneously under the water condition, solved the technical barrier that can not adopt conventional blasting technique under water and can only carry out static crushing, also solved the powder charge problem of level or up-hole.It is short that water conservancy project has cracking time with static fracture agent, and the bulbs of pressure are big, and crushing effect is good, and is safe in utilization, applies advantages such as easy, and with low cost.
The present invention is exclusively used in fragile material static crushing such as subaqueous rock, simultaneously also can be as the static crushing of rock under the general condition.
Claims (2)
1, water conservancy project static fracture agent, main component is burning CaO, it is characterized in that adding an amount of light-burned granular CaO, and it adds weight is 1%～16%, and described light-burned CaO particle is 1-5mm.
2, the water conservancy project as claimed in claim 1 preparation method of static fracture agent is characterized in that being realized by following steps:
1), in burning CaO fine powder, add an amount of light-burned granular CaO, it adds weight is 1%～16%, described light-burned CaO particle is 1-5mm; 2), in the paper mold cylinder of packing water conservancy project into nonwoven matter permeable with static fracture agent, and closely knit to the degree of packing that requires, cracking agent rolling type, water conservancy project is diameter * length=(30～75) mm * (200～400) mm with the coiled material specification of static agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031189016A CN1330424C (en) | 2003-04-08 | 2003-04-08 | Static breaking agent for water conservation project and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031189016A CN1330424C (en) | 2003-04-08 | 2003-04-08 | Static breaking agent for water conservation project and its preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1442666A CN1442666A (en) | 2003-09-17 |
| CN1330424C true CN1330424C (en) | 2007-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031189016A Expired - Fee Related CN1330424C (en) | 2003-04-08 | 2003-04-08 | Static breaking agent for water conservation project and its preparation method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106565388B (en) * | 2016-10-19 | 2018-08-21 | 安徽理工大学 | A kind of broken rock powder column and preparation method thereof |
| CN106565389B (en) * | 2016-10-19 | 2018-11-02 | 安徽理工大学 | A kind of broken rock powder column charge constitution and loading method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62179585A (en) * | 1986-02-03 | 1987-08-06 | Asahi Chem Ind Co Ltd | Static demolishing agent |
| CN87102228A (en) * | 1987-03-25 | 1987-11-18 | 铁道部第二工程局 | Novel static breaking agent |
| CN87207860U (en) * | 1987-05-08 | 1988-03-02 | 武汉工业大学 | Static detonate tube for skew, transverse and underwater filling hole |
| JPS646078A (en) * | 1987-06-30 | 1989-01-10 | Asahi Chemical Ind | Static crushing agent |
| CN1055217A (en) * | 1990-03-27 | 1991-10-09 | 芙蓉矿务局 | Immersed powder stick for rapid static crsing |
-
2003
- 2003-04-08 CN CNB031189016A patent/CN1330424C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62179585A (en) * | 1986-02-03 | 1987-08-06 | Asahi Chem Ind Co Ltd | Static demolishing agent |
| CN87102228A (en) * | 1987-03-25 | 1987-11-18 | 铁道部第二工程局 | Novel static breaking agent |
| CN87207860U (en) * | 1987-05-08 | 1988-03-02 | 武汉工业大学 | Static detonate tube for skew, transverse and underwater filling hole |
| JPS646078A (en) * | 1987-06-30 | 1989-01-10 | Asahi Chemical Ind | Static crushing agent |
| CN1055217A (en) * | 1990-03-27 | 1991-10-09 | 芙蓉矿务局 | Immersed powder stick for rapid static crsing |
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| CN1442666A (en) | 2003-09-17 |
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Granted publication date: 20070808 Termination date: 20140408 |