CN103396058A - Hydraulic slightly-expansive cement gel sandstone blast hole blocking material and preparation method thereof - Google Patents
Hydraulic slightly-expansive cement gel sandstone blast hole blocking material and preparation method thereof Download PDFInfo
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- CN103396058A CN103396058A CN2013103215138A CN201310321513A CN103396058A CN 103396058 A CN103396058 A CN 103396058A CN 2013103215138 A CN2013103215138 A CN 2013103215138A CN 201310321513 A CN201310321513 A CN 201310321513A CN 103396058 A CN103396058 A CN 103396058A
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Abstract
The invention provides a hydraulic slightly-expansive cement gel sandstone blast hole blocking material which comprises the following raw components in parts by weight: 50-80 parts of slightly-expansive cement, 20-50 parts of slag powder, 250-300 parts of sands, 1.0-1.2 parts of early strength water reducing agents, 2.5-7 parts of quick-setting agents and 30-40 parts of water. The invention provides a preparation method of the hydraulic slightly-expansive cement gel sandstone blast hole blocking material. The prepared blast hole blocking material has the characteristics of fast condensation and hardening, sufficient early strength, good impermeability, self slight expansion, high compactness, low hydration temperature rise, convenience for construction, no toxicity, environment protection, and the like.
Description
Technical field
The present invention relates to waterwork material technology field, specifically the stifled material in a kind of hydraulicity micro-expansion cement glue sandstone plug big gun hole and compound method.
Background technology
The big gun hole plug is an important step in blast working, directly affects utilization ratio and the blasting effect of explosive energy.Obstruction has the effect of detonation gas from overflowing too early the big gun hole that stop, and its effect size is relevant with the physico-mechanical properties of bridge material itself.Good obstruction can guarantee that explosive fully reacts, and improves the thermo-efficiency of explosive, thereby improves utilization ratio and the acting ability of explosive charge energy comprehensively.Therefore, the blasting quality that obtain, must the good big gun hole plug material of selectivity.
Tradition big gun hole plug material often adopts the tampers such as soil, sand, gravelstone or stone flour, landwaste, fluid, although these materials are cheap, has more problem:
1, traditional big gun hole plug material is difficult to form strong blockage body, and especially in underground explosion, loose material and fluid are difficult to insert horizontal big gun hole, reach obstruction and require very difficult.
2, traditional big gun hole plug rigidity of material is inadequate, and blockage body can not be combined with the big gun hole wall closely, and especially under the high water head effect, big gun hole plug body may slide outside hole, can increase the explosion harm that surge wave causes.Because behind weir with in gallery, be full of water during explosion, the dose of underwater blasting dress is large, and defer time is longer, and like this, explosive produces powerful surge wave when explosion, if stop up improper measures, in initiation process, probably causes " leading destruction ".
3, the density of traditional big gun hole plug material self and impermeability can't guarantee, thereby pressure water can infiltrate big gun hole or coyote hole by big gun hole plug body, cause the performance degradation of explosive and detonating material, even cause and miss-fire.
Aspect some Novel plug material take sand-cement slurry as main material, the explosion energy energy of the mode of motion in antiskid and resistance to shear, big gun hole, the effect of transmitting detonation gas pressure and absorption, be better than traditional big gun hole plug material, but also have certain problem:
1, for guaranteeing the early strength of blockage body fast development, materials needs cement to meet fast hydration after water, follows simultaneously the generation of amount of heat, has caused higher internal temperature, for the explosive wire that is embedded in the big gun hole has produced potential safety hazard;
2, with respect to traditional big gun hole plug material, the cost of this type of Novel plug material is higher.
Summary of the invention
The invention provides a kind of rapid coagulation is hardened, impermeability is good, density reaches by force easy construction the stifled material in hydraulicity micro-expansion cement glue sandstone plug big gun hole and compound method.
Material is blocked up in a kind of hydraulicity micro-expansion cement glue sandstone plug big gun hole, and its feed composition according to the weight part proportioning is: 50～80 parts of micro-expansion cements, 20～50 parts of slag powders, 250～300 parts of sands, 1.0～1.2 parts of early strength water-reducing agents, 2.5～7 parts of accelerating chemicalss, 30～40 parts, water.
Wherein, described micro-expansion cement is from the stress silicon acid salt cement or from stress aluminate cement or expansion aluminosulfate cement.
The compound method of the stifled material in a kind of hydraulicity micro-expansion cement glue sandstone plug big gun hole, comprise the steps:
(1) by weight ratio 50～80 parts of micro-expansion cements and 20～50 parts of slag powders, 1.0～1.2 parts of early strength water-reducing agents are added in agitator kettle, with 30～40 parts of water at normal temperatures with the speed of 140 ± 5r/min rotation and 62 ± 5r/min revolution, stirring at low speed 30 ± 5s, form slurry;
(2) stirring at low speed adds 250～300 parts of sands after finishing in slurry;
(3) speed that revolves round the sun with 285 ± 10r/min rotation and 125 ± 10r/min, high-speed stirring 30 ± 5s;
(4) stop mixing 90s, in the 1st 15s, with a rubber scraping, the material on blade and pot wall is scraped in the middle of pot, then continue the speed with 285 ± 10r/min rotation and 125 ± 10r/min revolution, high-speed stirring 60 ± 5s;
(5) before stirring end, in 15s, add 2.5～7 parts of accelerating chemicalss, can make the stifled material in hydraulicity micro-expansion cement glue sandstone plug big gun hole.
Wherein, described micro-expansion cement is from the stress silicon acid salt cement or from stress aluminate cement or expansion aluminosulfate cement.
The present invention possesses following beneficial effect:
(1) rapid coagulation sclerosis
Micro-expansion cement is one of main material of the stifled material in big gun of the present invention hole, and it is in air, to harden, and can in water, harden again, and can be bonded together sand and other raw materials securely, finally forms the gelling material of firm Shi Zhuanti.And adding of accelerating chemicals component can make the rapid setting and harden of cement mortar, with the cement minerals effect, generates compound stable and indissoluble, accelerates coherent structure and generates.Therefore, under drying or wet environment, but the stifled material rapid coagulation sclerosis in big gun of the present invention hole, as final set within initial set within 1h, 2h, the concrete time is controlled.
(2) enough early strengths are impervious good
The stifled material 5h ultimate compression strength in big gun of the present invention hole surpasses 5MPa, and this is because the early strength water-reducing agent component can be accelerated hydrated cementitious speed, promotes the development of cement mortar early strength.Therefore, can provide enough rigidity, anti-permeability performance is good.
(3) self microdilatancy, density is strong
At humidity and underwater operation environment, the stifled material in big gun of the present invention hole can produce appropriate volumetric expansion, to obtain the higher positive pressure of blockage body to the big gun hole wall.This is because micro-expansion cement is a kind of hydraulic cementing materials of micro-expansibility, after aquation, self possess the microdilatancy effect, and the particles filled effect of slag powders component can increase the degree of compactness of material.
(4) low aquation temperature rise
The explosive wire all is embedded in the big gun hole, and therefore its internal temperature should not, suppose that in hole, envrionment temperature is 20 ℃ higher than 60 ℃, and the bridge material peak temperature rise is no more than 40 ℃.In fact, non-tight adiabatic environment in hole, the heat that blockage body discharges can distribute at any time in atmosphere, do not reach the state of peak temperature rise.
Cement can cause temperature rise because of hydration heat, and adding of slag powders component can reduce cement consumption, reduces the aquation temperature rise, and saves engineering cost.
(5) easy construction
For meeting the constructing operation requirement, after adding the water stirring, bridge material is half mobile slurry state, and cohesiveness is good.Especially in underground explosion, half mobile slurry can be inserted horizontal big gun hole, meets and stops up requirement.And because of mixing of accelerating chemicals, the bridge material mix loses flowability very soon, and within 2h, sclerosis fully, form strong blockage body.
(6) asepsis environment-protecting
The stifled material in big gun of the present invention hole is nonpoisonous and tasteless inorganic materials, and health environment-friendly, be easy to construction, and easily obtain.
Embodiment
Below in conjunction with specific embodiment, the technical scheme in the present invention is described.
Embodiment 1
The compound method of the stifled material in a kind of hydraulicity micro-expansion cement glue sandstone plug big gun hole comprises the following steps:
(1) by weight ratio 70 parts of micro-expansion cements and 30 parts of slag powders, 1.2 parts of early strength water-reducing agents are added in agitator kettle, with 36 parts of water low speed (speed that 140 ± 5r/min rotation and 62 ± 5r/min revolve round the sun) stirring at normal temperatures 30s, form slurry;
(2) stirring at low speed adds 250 parts of sands after finishing in slurry;
(3) machine is gone at a high speed to (285 ± 10r/min rotation and 125 ± 10r/min revolution) and stir again 30s;
(4) stop mixing 90s, in the 1st 15s with a rubber scraping by blade and pot the material on wall, scrape in the middle of pot.Under (285 ± 10r/min rotation and 125 ± 10r/min revolution), continuing to stir 60s at a high speed;
(5) before stirring end, in 15s, add 7 parts of accelerating chemicalss, make the stifled material in hydraulicity micro-expansion cement glue sandstone plug big gun hole.
Embodiment 2
The compound method of the stifled material in a kind of hydraulicity micro-expansion cement glue sandstone plug big gun hole comprises the following steps:
(1) by weight ratio 50 parts of micro-expansion cements and 50 parts of slag powders, 1.2 parts of early strength water-reducing agents are added in agitator kettle, with 30 parts of water low speed (speed that 140 ± 5r/min rotation and 62 ± 5r/min revolve round the sun) stirring at normal temperatures 30s, form slurry;
(2) stirring at low speed adds 250 parts of sands after finishing in slurry;
(3) machine is gone at a high speed to (285 ± 10r/min rotation and 125 ± 10r/min revolution) and stir again 35s;
(4) stop mixing 90s, in the 1st 15s with a rubber scraping by blade and pot the material on wall, scrape in the middle of pot.Under (285 ± 10r/min rotation and 125 ± 10r/min revolution), continuing to stir 65s at a high speed.
(5) before stirring end, in 15s, add 5 parts of accelerating chemicalss, make the stifled material in hydraulicity micro-expansion cement glue sandstone plug big gun hole.
Embodiment 3
The compound method of the stifled material in a kind of hydraulicity micro-expansion cement glue sandstone plug big gun hole comprises the following steps:
(1) by weight ratio 80 parts of micro-expansion cements and 20 parts of slag powders, 1.2 parts of early strength water-reducing agents are added in agitator kettle, with 40 parts of water low speed (speed that 140 ± 5r/min rotation and 62 ± 5r/min revolve round the sun) stirring at normal temperatures 30s, form slurry;
(2) stirring at low speed finishes after rear stirring at low speed finishes in slurry, to add 300 parts of sands;
(3) machine is gone to and stirs at a high speed 35s again.
(4) stop mixing 90s, in the 1st 15s with a rubber scraping by blade and pot the material on wall, scrape in the middle of pot.Under (285 ± 10r/min rotation and 125 ± 10r/min revolution), continuing to stir 65s at a high speed;
(5) before stirring end, in 15s, add 5 parts of accelerating chemicalss, make the stifled material in hydraulicity micro-expansion cement glue sandstone plug big gun hole.
Embodiment 4
The preparation method of the stifled material in a kind of hydraulicity micro-expansion cement glue sandstone plug big gun hole comprises the following steps:
(1) by weight ratio 70 parts of micro-expansion cements and 30 parts of slag powders, 1.2 parts of early strength water-reducing agents are added in agitator kettle, with 36 parts of water low speed (speed that 140 ± 5r/min rotation and 62 ± 5r/min revolve round the sun) stirring at normal temperatures 30s, form slurry;
(2) stirring at low speed adds 250 parts of sands after finishing in slurry;
(3) machine is gone at a high speed to (285 ± 10r/min rotation and 125 ± 10r/min revolution) and stir again 30s;
(4) stop mixing 90s, in the 1st 15s with a rubber scraping by blade and pot the material on wall, scrape in the middle of pot.Under (285 ± 10r/min rotation and 125 ± 10r/min revolution), continuing to stir 60s at a high speed.
(5) before stirring end, in 15s, add 2.5 parts of accelerating chemicalss, make the stifled material in hydraulicity micro-expansion cement glue sandstone plug big gun hole.
In above-described embodiment, described micro-expansion cement is from the stress silicon acid salt cement or from stress aluminate cement or expansion aluminosulfate cement.
From the stress silicon acid salt cement: with the silicate cement of suitable proportion or ordinary Portland cement, high-alumina cement and natural dihydrate gypsum, grind the expansile hydraulic cementing materials that forms and be called from the stress silicon acid salt cement.
From the stress aluminate cement: from the stress aluminate cement, be the large rate of expansion gelling material that forms with a certain amount of high aluminium cement clinker and dihydrate gypsum grinding.By 1:2 standard mortar 28d self-stress value, be divided into 3.0,4.5 and 6.0 3 ranks.
Expansion aluminosulfate cement: all raw material with proper composition, through calcining the anhydrous calcium sulphoaluminate that is able to and Dicalcium Phosphate (Feed Grade) be the grog of essential mineral composition, add the levigate hydraulic cementing materials with adjustable expanding performance of making of appropriate dihydrate gypsum, be called the expansion aluminosulfate cement.
How early strength water-reducing agent can adopt serial powdery water reducer, concrete, adopts Jiangsu Botexin Materials Co., Ltd to produce
Type (surpassing early strong) concrete high-efficiency toughener, (1d can improve concrete strength 110～230%, and 3d can improve 60～130%, 7d can improve 50～90% by force to have large diminishing (water-reducing rate reaches 18～22%) and high morning.) characteristics;
Accelerating chemicals adopts Jiangsu Botexin Materials Co., Ltd to produce
Liquid accelerator, main component are Na[Al (OH)]
4, solid content 50%, can significantly accelerate sand-cement slurry or concrete setting and harden;
The stifled material in the hydraulicity micro-expansion cement glue sandstone plug big gun hole that above-described embodiment is made obtains test result shown in following table after testing:
Wood property energy test result is blocked up in table 1 hydraulicity micro-expansion cement glue sandstone plug big gun hole
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly belongs to those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (4)
1. material is blocked up in a hydraulicity micro-expansion cement glue sandstone plug big gun hole, it is characterized in that: the feed composition of the stifled material in described big gun hole according to the weight part proportioning is: 50～80 parts of micro-expansion cements, 20～50 parts of slag powders, 250～300 parts of sands, 1.0～1.2 parts of early strength water-reducing agents, 2.5～7 parts of accelerating chemicalss, 30～40 parts, water.
2. material is blocked up in hydraulicity micro-expansion cement glue sandstone plug big gun as claimed in claim 1 hole, it is characterized in that: described micro-expansion cement is from the stress silicon acid salt cement or from stress aluminate cement or expansion aluminosulfate cement.
3. the compound method of the stifled material in hydraulicity micro-expansion cement glue sandstone plug big gun hole, is characterized in that comprising the steps:
(1) by weight ratio 50～80 parts of micro-expansion cements and 20～50 parts of slag powders, 1.0～1.2 parts of early strength water-reducing agents are added in agitator kettle, with 30～40 parts of water at normal temperatures with the speed of 140 ± 5r/min rotation and 62 ± 5r/min revolution, stirring at low speed 30 ± 5s, form slurry;
(2) stirring at low speed adds 250～300 parts of sands after finishing in slurry;
(3) speed that revolves round the sun with 285 ± 10r/min rotation and 125 ± 10r/min, high-speed stirring 30 ± 5s;
(4) stop mixing 90s, in the 1st 15s, with a rubber scraping, the material on blade and pot wall is scraped in the middle of pot, then continue the speed with 285 ± 10r/min rotation and 125 ± 10r/min revolution, high-speed stirring 60 ± 5s;
(5) before stirring end, in 15s, add 2.5～7 parts of accelerating chemicalss, can make the stifled material in hydraulicity micro-expansion cement glue sandstone plug big gun hole.
4. the compound method of material is blocked up in hydraulicity micro-expansion cement glue sandstone plug big gun as claimed in claim 3 hole, it is characterized in that: described micro-expansion cement is from the stress silicon acid salt cement or from stress aluminate cement or expansion aluminosulfate cement.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692727A (en) * | 2015-02-13 | 2015-06-10 | 中国长江三峡集团公司 | Blast-hole plugging jelling material with characteristics of rapid solidification, early strength and micro-expansion |
| CN106478014A (en) * | 2016-09-28 | 2017-03-08 | 贵州大学 | Special stemming and preparation method are removed in a kind of structure demolition |
| CN114353610A (en) * | 2021-12-21 | 2022-04-15 | 湖北工业大学 | Horizontal or slowly-inclined blind gun hole internal segmented charging structure and construction method |
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| CN101318802A (en) * | 2008-07-04 | 2008-12-10 | 武汉理工大学 | Hole sealing agent for seismic exploration and method of manufacturing the same |
| CN101538136A (en) * | 2009-04-29 | 2009-09-23 | 华南理工大学 | Premixing mortar with high moisture retention and production method thereof |
| CN103086673A (en) * | 2011-11-01 | 2013-05-08 | 梁开华 | Soundless cracking agent composition |
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2013
- 2013-07-29 CN CN201310321513.8A patent/CN103396058B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318802A (en) * | 2008-07-04 | 2008-12-10 | 武汉理工大学 | Hole sealing agent for seismic exploration and method of manufacturing the same |
| CN101538136A (en) * | 2009-04-29 | 2009-09-23 | 华南理工大学 | Premixing mortar with high moisture retention and production method thereof |
| CN103086673A (en) * | 2011-11-01 | 2013-05-08 | 梁开华 | Soundless cracking agent composition |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692727A (en) * | 2015-02-13 | 2015-06-10 | 中国长江三峡集团公司 | Blast-hole plugging jelling material with characteristics of rapid solidification, early strength and micro-expansion |
| CN106478014A (en) * | 2016-09-28 | 2017-03-08 | 贵州大学 | Special stemming and preparation method are removed in a kind of structure demolition |
| CN114353610A (en) * | 2021-12-21 | 2022-04-15 | 湖北工业大学 | Horizontal or slowly-inclined blind gun hole internal segmented charging structure and construction method |
| CN114353610B (en) * | 2021-12-21 | 2023-04-25 | 湖北工业大学 | Structure and construction method for sectional charging in horizontal or gently inclined blind blasthole |
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Inventor after: Yang Huaquan Inventor after: Xiao Kaitao Inventor after: Lu Jian Inventor after: Lin Yuqiang Inventor after: Chen Xia Inventor after: Li Xiang Inventor after: Zhang Liang Inventor after: Wang Lei Inventor after: Gao Zhiyang Inventor after: Zhang Jianfeng Inventor after: Ruan Bo Inventor after: Wang Shuyin Inventor after: Huang Li Inventor after: Li Jiazheng Inventor after: Shi Yan Inventor after: Dong Yun Inventor after: Yan Jianjun Inventor after: Peng Shangshi Inventor after: Wu Xinxia Inventor after: Zhou Shihua Inventor before: Yang Huaquan Inventor before: Xiao Kaitao Inventor before: Lin Yuqiang Inventor before: Chen Xia Inventor before: Li Xiang Inventor before: Zhang Liang Inventor before: Wang Lei Inventor before: Gao Zhiyang Inventor before: Zhang Jianfeng Inventor before: Ruan Bo Inventor before: Huang Li Inventor before: Wang Shuyin Inventor before: Li Jiazheng Inventor before: Shi Yan Inventor before: Dong Yun Inventor before: Yan Jianjun Inventor before: Peng Shangshi Inventor before: Wu Xinxia Inventor before: Zhou Shihua |
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