CN104567564A - Aqueous medium non-coupling charge explosion method of jointed rock mass - Google Patents
Aqueous medium non-coupling charge explosion method of jointed rock mass Download PDFInfo
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- CN104567564A CN104567564A CN201410776589.4A CN201410776589A CN104567564A CN 104567564 A CN104567564 A CN 104567564A CN 201410776589 A CN201410776589 A CN 201410776589A CN 104567564 A CN104567564 A CN 104567564A
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Abstract
The invention relates to an aqueous medium non-coupling charge explosion method of jointed rock mass, and belongs to the field of engineering blasting. The non-coupling charge explosion method comprises the following steps: (1) placing high-hydroscopicity resin with a water absorption rate more than 200g/g into water, stirring the resin, ensuring the resin to adequately absorb the water to be saturated, and preparing gel; (2) charging a well-drilled blasting hole, pouring the prepared gel into a radial gap between the blasting hole and the explosive, wherein the pouring amount of the gel is 1.1 times of the size of the radial gap between the blasting hole and the explosive; (3) after the gel is poured, carrying out the steps such as hole sealing, wire connection, denotation and the like. By adopting the method, the aqueous medium non-coupling charge explosion of the jointed rock mass can be realized. By adopting the method, the problem that the aqueous medium non-coupling charge explosion cannot be used due to the poor water retention property of the jointed rock mass can be solved, the process is simple, the operation is convenient, and the explosion energy utilization rate and the blasting effect can be obviously improved.
Description
Technical field
The present invention relates to a kind of aqueous medium Uncoincided charge blasting method of crack rock charge explosion method, particularly a kind of crack rock.
Background technology
The explosion of aqueous medium Uncoincided charge is water-filling in the radial clearance between blasthole hole wall and powder charge, is that medium is to transmit a kind of blasting method of explosion energy and pressure with water.
This blasting method utilizes the Incoercibility of water and relative high density, kinematic viscosity, improves the action intensity of explosive load to big gun hole surrounding rock, improves the distribution of explosion energy, increases the stress wave activity time.Therefore, it is compared with air-decouple charge explosion, has that explosion energy utilization rate is high, blasting vibration and a feature such as noise intensity is low, breaking size is even.
But the water-retaining property of cranny development rock mass is very poor, the water electrode be filled with in big gun hole easily runs off from the Fracture Networks of hole wall, thus cannot implement the explosion of aqueous medium Uncoincided charge.
Summary of the invention
The object of the invention is the aqueous medium Uncoincided charge blasting method that a kind of crack rock will be provided, solve crack rock poor water retention property, big gun pore volume leakiness water problem.
The object of the present invention is achieved like this: this Uncoincided charge blasting method, adopt super absorbent resin, make its absorb water saturated become gel after the radial gap that is used between filling big gun hole and powder charge, and make it to realize, by the transformation of gel to water, playing the effect that aqueous medium is not coupled under Blast Loads.
Concrete steps are as follows:
(1) super absorbent resin water absorbent rate being greater than 200g/g is put into water and stirs, and makes it fully absorb water and reaches capacity and make gel;
(2) powder charge in the big gun hole of having bored, is filled in big gun hole by the gel made subsequently, and perfusion measures 1.1 times of radial clearance volume between big gun hole and explosive;
(3), after pouring into gel, sealing of hole, on line and operation of detonating construction is carried out;
Through aforesaid operations, the aqueous medium Uncoincided charge explosion of crack rock just can be realized.
Described super absorbent resin is powdery, and water absorbent rate is greater than 200g/g.
Dynamite quantity per hole is taken as during air-decouple charge explosion about 80%.
Beneficial effect, owing to have employed such scheme, adopts super absorbent resin, super absorbent resin is the functional high molecule material with spatial networks stereochemical structure of strongly hydrophilic group, water absorbing capacity is strong, and water holding capacity is high, can absorb and preserve the moisture more much larger than sole mass; After super absorbent resin water suction is saturated, namely become gel, this gel has the viscosity more much larger than water.After described gel is filled into the gap between big gun hole and powder charge, gel can be attached to hole wall surface blocking crack passage well, and Absorbable organic halogens be stored in gap; After explosive charge, under Blast Shock and temperatures involved, the spatial networks stereochemical structure of the gel that this water content is high is destroyed, and discharges rapidly absorbed moisture, by the transformation of gel to water, realizes water-uncouple charge explosion.Solve crack rock poor water retention property, big gun pore volume leakiness water problem, reaches object of the present invention.
Advantage: (1) solves the big gun hole seepy question caused because of poor water retention property in crack rock; (2) explosion energy utilization rate and demolition effect are all better than air-decouple charge explosion; (3) technique is simple, easy to operate; (4) super absorbent resin is nontoxic, innocuous materials, can not produce pollute before and after its explosion to environment.
Accompanying drawing illustrates:
Fig. 1 is charge constitution figure of the present invention.
In figure: 1-crack rock; 2-big gun hole; 3-explosive; 4-gel; 5-stone flour padding; 6-detonator; 7-detonator.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
This Uncoincided charge blasting method, adopt super absorbent resin, make its absorb water saturated become gel after the radial gap that is used between filling big gun hole and powder charge, and make it to realize, by the transformation of gel to water, playing the effect that aqueous medium is not coupled under Blast Loads.
Concrete steps are as follows:
(1) super absorbent resin water absorbent rate being greater than 200g/g is put into water and stirs, and makes it fully absorb water and reaches capacity and make gel;
(2) powder charge in the big gun hole of having bored, is filled in big gun hole by the gel made subsequently, and perfusion measures 1.1 times of radial clearance volume between big gun hole and explosive;
(3), after pouring into gel, sealing of hole, on line and operation of detonating construction is carried out;
Through aforesaid operations, the aqueous medium Uncoincided charge explosion of crack rock just can be realized.
Described super absorbent resin is powdery, and water absorbent rate is greater than 200g/g.
Dynamite quantity per hole is taken as during air-decouple charge explosion about 80%.
Embodiment 1: utilize the feature that super absorbent resin water absorbing capacity is strong, water holding capacity good and viscosity is large, make its absorb water saturated after become the radial hole that gel comes between filling big gun hole and powder charge, and under Blast Loads, realize there is gel to the transformation of water, the problem cannot implementing the explosion of aqueous medium Uncoincided charge because of crack rock poor water retention property can be overcome.
Deep hole blasting is carried out to lime rock side slope and cuts slope construction, rock Protodyakonov coefficient f=8, X-type developmental joint fissure in rock mass, and mostly be open joint.Because rock mass water-retaining property is very poor, do not possess the condition of conventional water-uncouple charge explosion, therefore early stage have employed air-decouple charge explosion (aperture 150mm, charge diameter 90mm), blasting parameter is as shown in table 1.But find after explosion that quick-fried heap comparatively disperses, foundation rate is higher, and demolition effect is undesirable.
For improving demolition effect, adopt technical scheme proposed by the invention, above-mentioned air-decouple charge explosion is improved to the explosion of aqueous medium Uncoincided charge, and step is as follows:
(1) first, calculate gel 4 consumption in single big gun hole 2: getting single hole explosive 3 dose is 79% of air-decouple charge blasting method, the charge diameter calculating explosive 3 is 80mm.Because big gun hole 2 diameter is 150mm, therefore obtaining radial clearance volume is 706.5L.Consider that big gun hole 2 hole wall exists crack, actual fill volume presses the radial clearance volume computing of about 1.1 times, so the gel 4 in single big gun hole 2 is real get 780L.
Then, carry out gel 4 and prepare: be water filling 780L in the container of 1000L at volume, the Powdered super absorbent resin 2.6kg of water absorbent rate 300g/g is poured into water and stirs about 2min, obtain gel 4.
(2) in crack rock 1, after boring, explosive 3 is loaded according to table 1 aqueous medium Uncoincided charge blasting parameter.As shown in Figure 1, in the degree of depth be 17m big gun hole 2 in load the explosive 3 of diameter 80mm, long 10m.During powder charge, detonator 6 is set at the bottom of hole and detonator is drawn big gun hole 2.Subsequently gel 4 is filled in big gun hole 2, makes it be full of radial clearance between big gun hole 2 and explosive 3.
(3) operation of step (1), (2) and (3) is repeated, until all big gun holes 2 are all poured gel 4.Subsequently, connect detonator 7 form blasting circuit, all powder charges of finally detonating with stone flour padding 5 sealing of hole.
Observe after explosion and find, adopt the quick-fried heap of aqueous medium Uncoincided charge blasting method neat, lumpiness is even, and foundation rate drops to zero by 8% during air-decouple charge explosion, and demolition effect is good.The 0.26kg/m3 during explosion of unit powder consumption air-decouple charge is by dropping to 0.21kg/m3, and explosive specific charge reduces 21%.
Table 1
| Blasting parameter | Former air-decouple charge explosion | The explosion of aqueous medium Uncoincided charge |
| Shoulder height/m | 15 | 15 |
| Hole depth/m | 17 | 17 |
| Aperture/mm | 150 | 150 |
| Pitch-row/m | 7 | 7 |
| Array pitch/m | 4.5 | 4.5 |
| Dynamite quantity per hole/kg | 70 | 55 |
| Loaded length/m | 10 | 10 |
| Sealed borehole length/m | 7 | 7 |
Claims (3)
1. the aqueous medium Uncoincided charge blasting method of a crack rock, it is characterized in that: this Uncoincided charge blasting method, adopt super absorbent resin, make its absorb water saturated become gel after the radial gap that is used between filling big gun hole and powder charge, and make it to realize, by the transformation of gel to water, playing the effect that aqueous medium is not coupled under Blast Loads.
Concrete steps are as follows:
(1) super absorbent resin water absorbent rate being greater than 200g/g is put into water and stirs, and makes it fully absorb water and reaches capacity and make gel;
(2) powder charge in the big gun hole of having bored, is filled in big gun hole by the gel made subsequently, and perfusion measures 1.1 times of radial clearance volume between big gun hole and explosive;
(3), after pouring into gel, sealing of hole, on line and operation of detonating construction is carried out;
Through aforesaid operations, the aqueous medium Uncoincided charge explosion of crack rock just can be realized.
2. the aqueous medium Uncoincided charge blasting method of crack rock according to claim 1, is characterized in that: described super absorbent resin is powdery, and water absorbent rate is greater than 200g/g.
3. the aqueous medium Uncoincided charge blasting method of crack rock according to claim 1, is characterized in that: dynamite quantity per hole is taken as during air-decouple charge explosion about 80%.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880134A (en) * | 2015-06-08 | 2015-09-02 | 攀钢集团矿业有限公司 | Blasthole charging structure and brow line protection method |
| CN105674819A (en) * | 2016-03-03 | 2016-06-15 | 秦健飞 | Aqueous medium energy transition blasting method and charging cavity |
| CN106323109A (en) * | 2016-11-04 | 2017-01-11 | 大同煤矿集团有限责任公司 | Longhole pressure-bearing blasting method of hard coal rock |
| CN110823035A (en) * | 2019-11-28 | 2020-02-21 | 葛洲坝易普力湖南二化民爆有限公司 | Step deep hole blasting uncoupled charging structure and charging method |
| CN110940242A (en) * | 2019-12-19 | 2020-03-31 | 中国水利水电第七工程局有限公司 | Blasting excavation method for deep crack containing slope rock mass |
| CN111536839A (en) * | 2020-04-23 | 2020-08-14 | 重庆交通大学 | Hydraulic blasting construction method for joint fracture development rock mass tunnel |
| CN112097581A (en) * | 2020-09-17 | 2020-12-18 | 武汉大学 | Blast hole charging structure and charging method |
| CN113188386A (en) * | 2021-05-08 | 2021-07-30 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Gel coupling blasting method for roof cutting of coal mine crack-containing roof area |
| CN115143854A (en) * | 2022-08-16 | 2022-10-04 | 南昌大学 | Blast hole fracturing column and blasting construction method |
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| JPH06174400A (en) * | 1992-12-02 | 1994-06-24 | Kazuhiko Atsuta | Bench blasting method |
| WO2002084206A1 (en) * | 2001-04-11 | 2002-10-24 | Blast-Tech Australia Pty Ltd | Method and apparatus for charging a blast hole |
| WO2012090165A1 (en) * | 2010-12-29 | 2012-07-05 | Stratabolt (Proprietary) Limited | Tamping device and method |
| CN202974088U (en) * | 2012-12-05 | 2013-06-05 | 浙江八达隧道工程有限公司 | High-water-absorption resin water cannon mud |
| CN103792292A (en) * | 2014-01-27 | 2014-05-14 | 中国矿业大学 | Coupling method of loose ring ultrasonic testing probe |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06174400A (en) * | 1992-12-02 | 1994-06-24 | Kazuhiko Atsuta | Bench blasting method |
| WO2002084206A1 (en) * | 2001-04-11 | 2002-10-24 | Blast-Tech Australia Pty Ltd | Method and apparatus for charging a blast hole |
| WO2012090165A1 (en) * | 2010-12-29 | 2012-07-05 | Stratabolt (Proprietary) Limited | Tamping device and method |
| CN202974088U (en) * | 2012-12-05 | 2013-06-05 | 浙江八达隧道工程有限公司 | High-water-absorption resin water cannon mud |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880134A (en) * | 2015-06-08 | 2015-09-02 | 攀钢集团矿业有限公司 | Blasthole charging structure and brow line protection method |
| CN105674819A (en) * | 2016-03-03 | 2016-06-15 | 秦健飞 | Aqueous medium energy transition blasting method and charging cavity |
| CN105674819B (en) * | 2016-03-03 | 2017-10-10 | 秦健飞 | A kind of aqueous medium transducing blasting method and its powder charge chamber |
| CN106323109A (en) * | 2016-11-04 | 2017-01-11 | 大同煤矿集团有限责任公司 | Longhole pressure-bearing blasting method of hard coal rock |
| CN110823035A (en) * | 2019-11-28 | 2020-02-21 | 葛洲坝易普力湖南二化民爆有限公司 | Step deep hole blasting uncoupled charging structure and charging method |
| CN110940242A (en) * | 2019-12-19 | 2020-03-31 | 中国水利水电第七工程局有限公司 | Blasting excavation method for deep crack containing slope rock mass |
| CN110940242B (en) * | 2019-12-19 | 2022-06-21 | 中国水利水电第七工程局有限公司 | Blasting excavation method for deep crack containing slope rock mass |
| CN111536839A (en) * | 2020-04-23 | 2020-08-14 | 重庆交通大学 | Hydraulic blasting construction method for joint fracture development rock mass tunnel |
| CN112097581A (en) * | 2020-09-17 | 2020-12-18 | 武汉大学 | Blast hole charging structure and charging method |
| CN113188386A (en) * | 2021-05-08 | 2021-07-30 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Gel coupling blasting method for roof cutting of coal mine crack-containing roof area |
| CN113188386B (en) * | 2021-05-08 | 2024-03-26 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Gel coupling blasting method for roof cutting of fracture-containing roof area of coal mine |
| CN115143854A (en) * | 2022-08-16 | 2022-10-04 | 南昌大学 | Blast hole fracturing column and blasting construction method |
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