CN1818535A - Exploitation gun mouth wall stabilizing controlling method and special wall protector - Google Patents
Exploitation gun mouth wall stabilizing controlling method and special wall protector Download PDFInfo
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- CN1818535A CN1818535A CN 200610010702 CN200610010702A CN1818535A CN 1818535 A CN1818535 A CN 1818535A CN 200610010702 CN200610010702 CN 200610010702 CN 200610010702 A CN200610010702 A CN 200610010702A CN 1818535 A CN1818535 A CN 1818535A
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Abstract
A stable control method of the wall of mining blasting hole and protective installment. The proportion of the depth and diameter of the blasting-hole is 32-450, the proportion of the diameter of the protective installment and the diameter of the blasting-hole is 0.8-0.9, the subsection screws of the protective installment connect, and then set into the blasting-hole and fix it. The protective installment is tube shape, screw thread set on both ends of it, the working length of one segment is 1.0-2.0meters, the diameter of it is 45-95mm. The invention solves the problem about the collapse of the hole-wall, the former blasting impact and cranny.
Description
Technical field
The invention belongs to mining Technology Underground field, mine, be specifically related to a kind of exploitation blasthole hole wall stable control method and special-purpose breast wall apparatus thereof.
Background technology
In mineral products exploitation construction, often need be drilled with the big gun hole, for the exploitation bed of Different Strata structure, its blasthole drilling is established and required is different.Thicker exploitation bed, the big gun hole is darker, if the stratum is softer, hole wall easily caves in, and influences powder charge effect and blasting quality, therefore, all needs blasthole hole wall is stablized control for deep blasting hole.Both at home and abroad the stable method of hole wall has multiplely, mainly is in boring procedure, the rational density by regulating drilling fluid, adds dissimilar anti-collapse inorganic agents or uses different caving-preventing drilling fluids, adopts proper construction technology to realize.For further improving the inhibition of drilling fluid, strengthen wave making machine and shut-off capacity, preferred drilling fluid flow pattern and the rheological parameter of drilling fluid, generally adopted caving-preventing drilling fluid both at home and abroad.Under the condition of ore deposit rock soft broken, after the construction of big gun hole finishes, in very short time the obstruction of caving in can appear.The cutting groove explosion is prior to a large amount of ore caving explosions in addition, and the concussion of blasting of cutting groove explosion can influence the stability in all big gun holes, so after big gun hole construction finishes, needs stablize retaining wall to the big gun hole of having constructed.Anti-collapse dose of the many employings of traditional stable wall protecting method, the anti-collapse liquid of drilling well etc., anti-collapse dose is commonplace in China's application, but because the product of different chemical composition is fit to dissimilar rock stratum, also should be during use according to work place study.Therefore, the factor that influences the hole wall stabilised quality is many, and adaptability is not strong; And the employing caving-preventing drilling fluid, can improve the stability of hole wall undoubtedly, but also can increase the complexity and the cost of bore process simultaneously, and to determine reasonable drilling liquid density according to hole crustal stress, pore pressure, caving pressure, fracture pressure on every side, keep the mechanical balance on stratum, prevent formation collapse and plastic deformation; When determining caving pressure, also to consider the influence of stratum hydration, stress distribution, material properties of rock and drilling fluid wave making machine, need a large amount of experiments head of liquid.Owing to uncertain factor in the work progress is many, limited the generally use of drilling fluid method in addition.Technical problem at the prior art existence, the inventor is through moisture to the test stope, soft, layering, a large amount of technical Analysis researchs in inclination (fan-shaped) big gun hole, find that the trial zone ore body is moisture, layering, the formation condition of earthy oxide ore steadiness difference, under the gravity effect, angling hole bears bigger shearing force, hole wall is very easy to cave in, the inventor has developed a kind of exploitation blasthole hole wall stable control method and special-purpose breast wall apparatus thereof, it is coarse to have overcome the formed blasthole hole wall of existing simple boring wall building, unstable, and be subject to the cave crack, the drawback of crack and the influence of preposition blasting impact, evidence, effect is good.
The innovation and creation content
The object of the present invention is to provide a kind of technology easy, the exploitation blasthole hole wall stable control method that construction cost is cheap.
Another object of the present invention is to provide a kind of special-purpose breast wall apparatus that can realize said method.
The object of the present invention is achieved like this: according to projected depth, the orientation in big gun hole, determine the diameter in big gun hole, general blast hole depth and diameter ratio are 32-450, adopt routine techniques after being drilled with the construction of predetermined big gun hole on the purpose ore body, determine the diameter of special-purpose breast wall apparatus according to blasthole diameter, its diameter is 0.8-0.9 with the ratio of blasthole diameter, is placed in after special-purpose breast wall apparatus segmentation is threaded to be drilled with in the big gun hole, fixing getting final product.
Another object of the present invention is achieved in that described special-purpose breast wall apparatus is a cylinder structure, its two ends are respectively equipped with internal and external threads, and promptly the one end is provided with internal thread, and the other end is provided with external screw thread, the two ends screw thread can cooperatively interact, and segmentation interconnects the prolongation active length.The single hop active length is 1.0-2.0m, and its wall thickness is 1.5mm-4.5mm, and its diameter is 45mm-95mm, and the proof pressure of special-purpose breast wall apparatus is 0.40MPa-1.0MPa.
For the big gun hole of only satisfying the powder charge requirement, the proof pressure of its special-purpose breast wall apparatus does not require very high, and the lateral pressure that can bear the nature wall building gets final product.If before will playing retaining wall effect assurance powder charge, not occurring caving in, also will play the influence that is not subjected to front-seat blasting impact, will be higher to the requirement of withstand voltage of breast wall apparatus.
Hole wall stable control method of the present invention and special-purpose breast wall apparatus thereof, be after drilling construction finishes, manually in time will there be the tubular special-purpose breast wall apparatus of internal and external threads to be placed in the big gun hole, efficiently solve the difficult problem of hole wall collapse, and nature cave crack, rock stratum, crack and preposition blasting impact are to the influence of hole wall, charge process is become simply, improved loading rate and quality, improved demolition effect simultaneously.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment, but never in any form the present invention is limited.
Fig. 1 is the special-purpose breast wall apparatus structural representation of the present invention;
Fig. 2 is the screw thread partial enlarged drawing.
The specific embodiment
Mining blasthole hole wall stable control method of the present invention, system is according to projected depth, the orientation in big gun hole, determine the diameter in big gun hole, general blast hole depth and diameter ratio are 32-450, adopt routine techniques after being drilled with the construction of predetermined big gun hole on the purpose ore body, determine the diameter of special-purpose breast wall apparatus according to blasthole diameter, its diameter is 0.8-0.9 with the ratio of blasthole diameter, be placed in after special-purpose breast wall apparatus segmentation is threaded and be drilled with in the big gun hole fixing getting final product.
As shown in Figure 1 and Figure 2, described special-purpose breast wall apparatus is a cylinder structure, and its two ends are respectively equipped with internal and external threads, and promptly the one end is provided with internal thread, and the other end is provided with external screw thread, and the two ends screw thread can cooperatively interact, and segmentation interconnects the prolongation active length.The single hop active length is 1.0-2.0m, and its wall thickness is 1.5mm-4.5mm, and its diameter is 45mm-95mm, and the proof pressure of special-purpose breast wall apparatus is 0.40MPa-1.0MPa.
Described screw thread is a rectangular thread.
The special-purpose breast wall apparatus of the present invention can use nonmetallic materials such as PVC, nylon to make, and generally adopts the pvc pipe material to process.
Embodiment 1
The projected depth 2m in big gun hole, the straight 52mm in big gun hole, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 45mm, wall thickness 1.5-1.7mm, withstand voltage 0.40MPa, the special-purpose breast wall apparatus of the PVC of long 2m inserts in the big gun hole, and is fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 2
The projected depth 7.5m in big gun hole, the straight 52mm in big gun hole, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 45mm, wall thickness 1.7-2.1mm, withstand voltage 0.60MPa, 5 of the special-purpose breast wall apparatus of the PVC of long 1.5m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 3
The projected depth 10m in big gun hole, the straight 52mm in big gun hole, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 45mm, wall thickness 2.1-3.0mm, withstand voltage 0.80MPa, 10 of the special-purpose breast wall apparatus of the PVC of long 1m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 4
The projected depth 4m in big gun hole, the straight 62mm in big gun hole, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 55mm, wall thickness 1.7～2.1m, withstand voltage 0.40MPa, 4 of the special-purpose breast wall apparatus of the PVC of long 1m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 5
The projected depth 10m in big gun hole, the straight 62mm in big gun hole, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 55mm, wall thickness 2.2～2.7mm, withstand voltage 0.60MPa, 5 of the special-purpose breast wall apparatus of the PVC of long 2m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 6
The projected depth 15m in big gun hole, the straight 62mm in big gun hole, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 55mm, wall thickness 2.5～3.1mm, withstand voltage 0.80MPa, 10 of the special-purpose breast wall apparatus of the PVC of long 1.5m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 7
The projected depth 10m in big gun hole, big gun hole Helicopter-9 0mm, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 75mm, wall thickness 1.5～1.9mm, withstand voltage 0.40MPa, 10 of the special-purpose breast wall apparatus of the PVC of long 1m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 8
The projected depth 30m in big gun hole, big gun hole Helicopter-9 0mm, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 75mm, wall thickness 2.2～2.7mm, withstand voltage 0.60MPa, 20 of the special-purpose breast wall apparatus of the PVC of long 1.5m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 9
The projected depth 50m in big gun hole, big gun hole Helicopter-9 0mm, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 75mm, wall thickness 2.9～3.4mm, withstand voltage 0.80MPa, 25 of the special-purpose breast wall apparatus of the PVC of long 2m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 10
The projected depth 10m in big gun hole, big gun hole Helicopter-9 5mm, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 86mm, wall thickness 2.3～2.8mm, withstand voltage 0.40MPa, 5 of the special-purpose breast wall apparatus of the PVC of long 2m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 11
The projected depth 30m in big gun hole, big gun hole Helicopter-9 5mm, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 86mm, wall thickness 2.7～3.2mm, withstand voltage 0.60MPa, 20 of the special-purpose breast wall apparatus of the PVC of long 1.5m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 12
The projected depth 50m in big gun hole, big gun hole Helicopter-9 5mm, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 86mm, wall thickness .5～4.1mm, withstand voltage 0.80MPa, 25 of the special-purpose breast wall apparatus of the PVC of long 2m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 13
The projected depth 10m in big gun hole, big gun hole Helicopter-11 0mm, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 95mm, wall thickness 2.7～3.2mm, withstand voltage 0.60MPa, 5 of the special-purpose breast wall apparatus of the PVC of long 2m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 14
The projected depth 30m in big gun hole, big gun hole Helicopter-11 0mm, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 95mm, wall thickness 3.7～4.2mm, withstand voltage 0.80MPa, 20 of the special-purpose breast wall apparatus of the PVC of long 1.5m, be threaded mutually and be placed in successively in the big gun hole, fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Embodiment 15
The projected depth 50m in big gun hole, big gun hole Helicopter-11 0mm, bore process is drilled with the big gun hole and reaches projected depth on the target ore body routinely, with diameter 95mm, wall thickness 4.3～5.0mm, withstand voltage 1.0MPa, 25 of the special-purpose breast wall apparatus of the PVC of long 2m are threaded mutually and are placed in successively in the big gun hole, and are fixing.The big gun hole inner wall smooth that retaining wall is handled, the loading rate height, demolition effect is good.
Nonmetal tubing such as all available nylon of the pvc pipe material among above-mentioned all embodiment or other plastics replace, and do not influence the realization of the object of the invention.
Characteristics of the present invention:
1. efficiently solve the difficult problem of hole wall collapse, improved loading rate and quality, improved It is simple that demolition effect, charge process become.
2. the special-purpose breast wall apparatus in the big gun hole, except playing the retaining wall effect, also play elimination before The effect of round blasting impact impact is unlikely to destroy rear artillery salvo hole.
3. adopt this technology, the pattern of fan-shaped deep hole is become a reality.
Claims (4)
1, a kind of exploitation blasthole hole wall stable control method, projected depth, orientation according to the big gun hole, determine the diameter in big gun hole, blast hole depth and diameter ratio are 32-450, it is characterized in that: adopt routine techniques after being drilled with the construction of predetermined big gun hole on the purpose ore body, determine the diameter of special-purpose breast wall apparatus according to blasthole diameter, its diameter is 0.8-0.9 with the ratio of blasthole diameter, be placed in after special-purpose breast wall apparatus segmentation is threaded and be drilled with in the big gun hole, fixing.
2, a kind of special-purpose breast wall apparatus of method according to claim 1 of realizing, it is characterized in that: described special-purpose breast wall apparatus is a cylinder structure, its two ends are respectively equipped with internal and external threads, be that the one end is provided with internal thread, the other end is provided with external screw thread, the two ends screw thread can cooperatively interact, and segmentation interconnects the prolongation active length.The single hop active length is 1.0-2.0m, and its wall thickness is 1.5mm-4.5mm, and its diameter is 45mm-95mm, and the proof pressure of special-purpose breast wall apparatus is 0.40MPa-1.0MPa.
3, special-purpose breast wall apparatus as claimed in claim 2 is characterized in that: described screw thread is a rectangular thread.
4, special-purpose breast wall apparatus as claimed in claim 2 is characterized in that: described special-purpose breast wall apparatus can use nonmetallic materials such as PVC, nylon to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610010702 CN1818535A (en) | 2006-02-23 | 2006-02-23 | Exploitation gun mouth wall stabilizing controlling method and special wall protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610010702 CN1818535A (en) | 2006-02-23 | 2006-02-23 | Exploitation gun mouth wall stabilizing controlling method and special wall protector |
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| Publication Number | Publication Date |
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| CN1818535A true CN1818535A (en) | 2006-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610010702 Pending CN1818535A (en) | 2006-02-23 | 2006-02-23 | Exploitation gun mouth wall stabilizing controlling method and special wall protector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230771A (en) * | 2011-05-23 | 2011-11-02 | 中南大学 | Vertical downward deep hole composite decoupled hole protecting method for cataclastic ore block |
| CN103486910A (en) * | 2013-09-27 | 2014-01-01 | 安徽理工大学 | Cooperative blasting charge structure and charge method thereof |
-
2006
- 2006-02-23 CN CN 200610010702 patent/CN1818535A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230771A (en) * | 2011-05-23 | 2011-11-02 | 中南大学 | Vertical downward deep hole composite decoupled hole protecting method for cataclastic ore block |
| CN103486910A (en) * | 2013-09-27 | 2014-01-01 | 安徽理工大学 | Cooperative blasting charge structure and charge method thereof |
| CN103486910B (en) * | 2013-09-27 | 2016-05-18 | 安徽理工大学 | A kind of collaborative blast charging structure and loading method thereof |
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Open date: 20060816 |