WO2023103257A1 - Low-throw and low-impact blasting method based on hard rock in deep vertical shaft - Google Patents
Low-throw and low-impact blasting method based on hard rock in deep vertical shaft Download PDFInfo
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- WO2023103257A1 WO2023103257A1 PCT/CN2022/088921 CN2022088921W WO2023103257A1 WO 2023103257 A1 WO2023103257 A1 WO 2023103257A1 CN 2022088921 W CN2022088921 W CN 2022088921W WO 2023103257 A1 WO2023103257 A1 WO 2023103257A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- the invention relates to a construction method of a mine shaft, in particular to a low-throwing and low-impact blasting method based on hard rock in a deep shaft.
- the main reason for blasting shock waves in hard rock is that there are randomly distributed weak surfaces in the hard rock body.
- the blasting makes the high-temperature, high-pressure, and high-speed explosive gas escape quickly along these weak surfaces, and the blasted rock mass along the wellbore is scattered.
- the piston in the pipe pushes the air in the wellbore.
- the present invention proposes a low-throwing, low-impact blasting method based on hard rock in deep shafts.
- the destructive force of blasting can be reduced and the safety of blasting can be improved.
- the depth of the auxiliary eye in the A/A' area is different from the depth of the auxiliary eye in the B/B' area.
- the auxiliary eye in step (2) is one circle, two circles or three circles.
- step (4) a large rubber ring is placed above the blast hole.
- a 3-stage millisecond delay electric detonator is first installed in each cut hole, then 1.6m of clay is filled, and finally a 1-stage millisecond delay electric detonator is installed.
- a 5-stage millisecond delay electric detonator is first installed in each auxiliary eye, and then a 3-stage millisecond delay electric detonator is installed after filling clay blasting clay;
- a 6-stage millisecond delay electric detonator is first installed in each auxiliary eye, and then a 5-stage millisecond delay electric detonator is installed after filling clay gun mud;
- each auxiliary eye is equipped with a 7-stage millisecond delay electric detonator.
- the low-throwing and low-impact blasting method based on the hard rock in the deep shaft of the present invention can effectively reduce the throwing of flying rocks by designing the cutting hole, the peripheral hole and the auxiliary hole drilling method, especially the partition setting of the peripheral hole Height and shock wave seismic wave, to protect the safety of the well wall and facilities in the well, increase the blasting footage, and speed up the construction speed; place a large rubber ring above the blasthole to reduce the blasting shock wave.
- Fig. 1 is the overall design plan diagram of the blast hole in the specific embodiment of this patent;
- Figure 2 is a schematic diagram of the position of the blast hole in the specific embodiment of the patent.
- Fig. 3 is a schematic diagram of the oblique direction of the peripheral eye in the specific embodiment of this patent.
- A/A' and B/B' are symmetrically constructed in the first circle of auxiliary eyes 2, in which in the first circle of auxiliary eyes 2: the distance from the auxiliary eye to the center of the circle in A/A' area 2-A is equal, and in B/B' area 2 - The distance from the auxiliary eye of B to the center of the circle is the same; the distance from the auxiliary eye to the center of the circle of the area A/A' is different from the distance from the auxiliary eye of area B/B' to the center of the circle;
- the second circle of auxiliary eyes 3 can be constructed outside the first circle of auxiliary eyes, as shown in Figure 2 3-A and 3-B.
- the second circle of auxiliary eyes 3 is constructed on the outside of the third circle of auxiliary eyes 4, as shown in Figure 2, 4-A and 4-B; in each circle of auxiliary eyes, the distance from the auxiliary eye to the center of the circle in the A/A' area is the same as that of B/B The distance from the auxiliary eye to the center of the circle is different in the 'zone.
- Figures 1 and 2 show that the distance from the auxiliary eye to the center of the circle in the A/A' area is smaller than the distance from the auxiliary eye to the center of the circle in the B/B' area of the auxiliary eyes in the same circle; this symmetrical + asymmetrical setting can Reduce the impact of blasting.
- the depth of the auxiliary eye in the A/A' area is different from the depth of the auxiliary eye in the B/B' area;
- a circle of peripheral eye 5 is constructed outside the outermost auxiliary eye, and the blast hole of the peripheral eye is inclined toward the center of the circle as a whole, as shown in Figure 3, and the angle ⁇ of inclination is between 83°-85°;
- a 5-stage millisecond delay electric detonator is first installed in each auxiliary eye, and a 3-stage millisecond delay electric detonator is installed after filling clay gun mud;
- a 6-stage millisecond delay electric detonator is first installed in each auxiliary eye, and a 5-stage millisecond delay electric detonator is installed after filling clay gun mud;
- each auxiliary eye is equipped with a 7-stage millisecond delay electric detonator.
- a 9-segment millisecond delay electric detonator is installed in each peripheral eye. After the detonator and explosives are completed, a large rubber ring is placed above the blast hole to reduce the blasting shock wave; specifically, the large rubber ring can use the discarded tires of large vehicles.
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A low-throw and low-impact blasting method based on hard rock in a deep vertical shaft, comprising the following steps: (1) arranging and constructing a first ring of cut holes in the center of a shaft of the vertical shaft, and after completing the construction, sealing openings of the cut holes; (2) constructing easer holes; (3) constructing a ring of contour holes outside the outermost easer holes; and (4) installing explosives into the cut holes, the easer holes and the contour holes, and completing full-section single blasting according to the sequence of the cut holes, the easer holes and the contour holes. With the method, the height of upcast flying stone and shock and seismic waves can be effectively reduced, the safety of shaft walls and facilities inside the shaft is protected, the blasting depth is increased, and the construction is accelerated; and large rubber rings are arranged above blast holes to mitigate blasting shock waves.
Description
本发明涉及矿山竖井的施工方法，尤其是一种基于深竖井中坚硬岩的低抛掷、低冲击***方法。The invention relates to a construction method of a mine shaft, in particular to a low-throwing and low-impact blasting method based on hard rock in a deep shaft.
坚硬岩中***冲击波产生的主要原因是硬岩体内存在随机分布的弱面，***使高温、高压、高速的爆生气体沿着这些弱面迅速逸出，被爆岩体沿井筒的抛散像管道内的活塞一样推压井筒内的空气。对于深竖井的坚硬岩进行***时，在***冲击波的作用下，飞石会严重破坏竖井内的施工设备。The main reason for blasting shock waves in hard rock is that there are randomly distributed weak surfaces in the hard rock body. The blasting makes the high-temperature, high-pressure, and high-speed explosive gas escape quickly along these weak surfaces, and the blasted rock mass along the wellbore is scattered. The piston in the pipe pushes the air in the wellbore. When blasting hard rock in deep shafts, under the action of blasting shock waves, flying stones will seriously damage the construction equipment in the shaft.
发明内容Contents of the invention
鉴于此，本发明提出了一种基于深竖井中坚硬岩的低抛掷、低冲击***方法，通过改进施工方法，减轻***的破坏力，提高***的安全性。In view of this, the present invention proposes a low-throwing, low-impact blasting method based on hard rock in deep shafts. By improving the construction method, the destructive force of blasting can be reduced and the safety of blasting can be improved.
基于深竖井中坚硬岩的低抛掷、低冲击***方法，具体的方法如下：Based on the low-throw, low-impact blasting method for hard rock in deep shafts, the specific methods are as follows:
(1)在竖井井筒中心布置并施工第一圈掏槽眼，施工完成后将掏槽眼的口封闭；(1) Arrange and construct the first ring of cutting holes in the center of the shaft shaft, and close the mouth of the cutting holes after the construction is completed;
(2)施工辅助眼(2) construction auxiliary eye
以竖井井筒中心为圆心，画两条过圆心的线，将掘进面在水平方向划分为四个区，分别为A/B/A'/B'；分别在A/A'和B/B'对称施工第一圈辅助眼，其中第一圈辅助眼中：A/A'区的辅助眼到圆心的距离相等，B/B'区的辅助眼到圆心的距离相等；A/A'区的辅助眼到圆心的距离与B/B'区的辅助眼到圆心的距离不同；Taking the center of the shaft shaft as the center of the circle, draw two lines passing through the center of the circle, and divide the excavation surface into four areas in the horizontal direction, namely A/B/A'/B'; Symmetrical construction of the first circle of auxiliary eyes, in which the first circle of auxiliary eyes: the distances from the auxiliary eyes in the A/A' area to the center of the circle are equal, the distances from the auxiliary eyes in the B/B' area to the center of the circle are equal; the auxiliary eyes in the A/A' area The distance from the eye to the center of the circle is different from the distance from the auxiliary eye to the center of the circle in the B/B' area;
(3)在最外侧的辅助眼外施工一圈周边眼；(3) Build a circle of peripheral eyes outside the outermost auxiliary eye;
(4)在掏槽眼、辅助眼、周边眼内安装***，按照掏槽眼-辅助眼-周边眼的顺序，完成全断面一次起爆。(4) Install explosives in the cutout eye, auxiliary eye and peripheral eye, and detonate the whole section once in the order of cutout eye-auxiliary eye-peripheral eye.
在上述方案的基础上，步骤(2)中两条过圆心的线相互垂直。On the basis of the above scheme, the two lines passing through the center of the circle in step (2) are perpendicular to each other.
在上述方案的基础上，A/A'区的辅助眼的深度与B/B'区的辅助眼的深度不同。On the basis of the above scheme, the depth of the auxiliary eye in the A/A' area is different from the depth of the auxiliary eye in the B/B' area.
在上述方案的基础上，步骤(2)中辅助眼为一圈、两圈或三圈。On the basis of the above scheme, the auxiliary eye in step (2) is one circle, two circles or three circles.
在上述方案的基础上，步骤(4)中，在炮眼上方放置大型橡胶圈。On the basis of the above scheme, in step (4), a large rubber ring is placed above the blast hole.
在上述方案的基础上，每个掏槽眼内先装一个3段式毫秒延期电***，再填入1.6m的炮泥，最后再装一个1段式毫秒延期电***。On the basis of the above scheme, a 3-stage millisecond delay electric detonator is first installed in each cut hole, then 1.6m of clay is filled, and finally a 1-stage millisecond delay electric detonator is installed.
在上述方案的基础上，第一圈辅助眼中，每个辅助眼内先装一个5段式毫秒延期电***，填入粘***泥后再装一个3段式毫秒延期电***；On the basis of the above scheme, in the first circle of auxiliary eyes, a 5-stage millisecond delay electric detonator is first installed in each auxiliary eye, and then a 3-stage millisecond delay electric detonator is installed after filling clay blasting clay;
第二圈辅助眼中，每个辅助眼内先装一个6段式毫秒延期电***，填入粘***泥后再装一个5段式毫秒延期电***；In the second circle of auxiliary eyes, a 6-stage millisecond delay electric detonator is first installed in each auxiliary eye, and then a 5-stage millisecond delay electric detonator is installed after filling clay gun mud;
第三圈辅助眼中，每个辅助眼内装一个7段式毫秒延期电***。In the third circle of auxiliary eyes, each auxiliary eye is equipped with a 7-stage millisecond delay electric detonator.
在上述方案的基础上，每个周边眼中安装一个9段式毫秒延期电***。On the basis of the above scheme, a 9-stage millisecond delay electric detonator is installed in each peripheral eye.
本发明的基于深竖井中坚硬岩的低抛掷、低冲击***方法，通过设计掏槽眼、周边眼和辅助眼打孔方式，特别是对周边眼的分区设置，可以有效减小上抛飞石高度和冲击波地震波，保护井壁和井内设施安全，提高***进尺，加快施工速度；在炮眼上方放置大型橡胶圈，用于减轻***冲击波。The low-throwing and low-impact blasting method based on the hard rock in the deep shaft of the present invention can effectively reduce the throwing of flying rocks by designing the cutting hole, the peripheral hole and the auxiliary hole drilling method, especially the partition setting of the peripheral hole Height and shock wave seismic wave, to protect the safety of the well wall and facilities in the well, increase the blasting footage, and speed up the construction speed; place a large rubber ring above the blasthole to reduce the blasting shock wave.
图1本专利具体实施方式中炮眼整体设计方案图；Fig. 1 is the overall design plan diagram of the blast hole in the specific embodiment of this patent;
图2本专利具体实施方式中炮眼位置示意图；Figure 2 is a schematic diagram of the position of the blast hole in the specific embodiment of the patent;
图3本专利具体实施方式中周边眼的倾斜方向示意图。Fig. 3 is a schematic diagram of the oblique direction of the peripheral eye in the specific embodiment of this patent.
下面更详细地描述本发明的示例性实施例。提供这些实施例是为了能够更透彻地理解本发明，并且能够将本发明的范围完整的传达给本领域的技术人员。Exemplary embodiments of the present invention are described in more detail below. These embodiments are provided for a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
如图1所示，基于深竖井中坚硬岩的低抛掷、低冲击***方法，具体的方法如下：As shown in Figure 1, based on the low-throw, low-impact blasting method for hard rock in deep shafts, the specific methods are as follows:
(1)在竖井井筒中心布置并施工第一圈掏槽眼1，施工完成后将掏槽眼的口封闭；(1) Arrange and construct the first ring of cut holes 1 in the center of the shaft shaft, and close the mouth of the cut holes after the construction is completed;
(2)施工辅助眼(2) construction auxiliary eye
如图1和图2所示，以竖井井筒中心为圆心，画两条过圆心的线，将掘进面在水平方向划分为四个区，分别为A/B/A'/B'；分别在A/A'和B/B'对称施工第一圈辅助眼2，其中第一圈辅助眼2中：A/A'区2-A的辅助眼到圆心的距离相等，B/B'区2-B的辅助眼到圆心的距离相等；A/A'区的辅助眼到圆心的距离与B/B'区的辅助眼到圆心的距离不同；As shown in Figure 1 and Figure 2, take the center of the shaft shaft as the center of the circle, draw two lines passing through the center of the circle, and divide the excavation surface into four areas in the horizontal direction, namely A/B/A'/B'; A/A' and B/B' are symmetrically constructed in the first circle of auxiliary eyes 2, in which in the first circle of auxiliary eyes 2: the distance from the auxiliary eye to the center of the circle in A/A' area 2-A is equal, and in B/B' area 2 - The distance from the auxiliary eye of B to the center of the circle is the same; the distance from the auxiliary eye to the center of the circle of the area A/A' is different from the distance from the auxiliary eye of area B/B' to the center of the circle;
作为一种具体的方案，两条过圆心的线相互垂直，从而平分A/B/A'/B'区；As a specific scheme, two lines passing through the center of the circle are perpendicular to each other, thus bisecting the A/B/A'/B' area;
施工完第一圈辅助眼后，可以根据深竖井的实际施工面的大小，在第一圈辅助眼外侧施工第二圈辅助眼3，如图2中的3-A和3-B，在第二圈辅助眼3外侧施工第三圈辅助眼4，如图2中的4-A和4-B；每一圈的辅助眼中，A/A'区的辅助眼到圆心的距离与B/B'区的辅助眼到圆心的距离不同。图1和2中示出的是：A/A'区的辅助眼到圆心的距离小于同一圈的辅助眼中B/B'区的辅助眼到圆心的距离；这种对称+非对称的设置可以降低***的冲击。After the construction of the first circle of auxiliary eyes, according to the size of the actual construction surface of the deep shaft, the second circle of auxiliary eyes 3 can be constructed outside the first circle of auxiliary eyes, as shown in Figure 2 3-A and 3-B. The second circle of auxiliary eyes 3 is constructed on the outside of the third circle of auxiliary eyes 4, as shown in Figure 2, 4-A and 4-B; in each circle of auxiliary eyes, the distance from the auxiliary eye to the center of the circle in the A/A' area is the same as that of B/B The distance from the auxiliary eye to the center of the circle is different in the 'zone. Figures 1 and 2 show that the distance from the auxiliary eye to the center of the circle in the A/A' area is smaller than the distance from the auxiliary eye to the center of the circle in the B/B' area of the auxiliary eyes in the same circle; this symmetrical + asymmetrical setting can Reduce the impact of blasting.
作为一个具体的方案，在A/A'区的辅助眼的深度与B/B'区的辅助眼的深度不同；As a specific solution, the depth of the auxiliary eye in the A/A' area is different from the depth of the auxiliary eye in the B/B' area;
(3)在最外侧的辅助眼外施工一圈周边眼5，周边眼的炮孔整体向圆心处倾斜，如图3所示，倾斜的角度α在83°-85°之间；(3) A circle of peripheral eye 5 is constructed outside the outermost auxiliary eye, and the blast hole of the peripheral eye is inclined toward the center of the circle as a whole, as shown in Figure 3, and the angle α of inclination is between 83°-85°;
(4)在掏槽眼、辅助眼、周边眼内安装***；(4) Installing explosives in the cutout eye, auxiliary eye and peripheral eye;
具体的，每个掏槽眼内先装一个3段式毫秒延期电***，再填入1.6m的 炮泥，最后再装一个1段式毫秒延期电***；Specifically, first install a 3-stage millisecond delay electric detonator in each cut hole, then fill in 1.6m of gun mud, and finally install a 1-stage millisecond delay electric detonator;
第一圈辅助眼中2，每个辅助眼内先装一个5段式毫秒延期电***，填入粘***泥后再装一个3段式毫秒延期电***；In the first circle of auxiliary eyes 2, a 5-stage millisecond delay electric detonator is first installed in each auxiliary eye, and a 3-stage millisecond delay electric detonator is installed after filling clay gun mud;
第二圈辅助眼中3，每个辅助眼内先装一个6段式毫秒延期电***，填入粘***泥后再装一个5段式毫秒延期电***；In the second circle of auxiliary eyes 3, a 6-stage millisecond delay electric detonator is first installed in each auxiliary eye, and a 5-stage millisecond delay electric detonator is installed after filling clay gun mud;
第三圈辅助眼中4，每个辅助眼内装一个7段式毫秒延期电***。In the third circle of auxiliary eyes 4, each auxiliary eye is equipped with a 7-stage millisecond delay electric detonator.
每个周边眼中安装一个9段式毫秒延期电***。***和***完成后，在炮眼上方放置大型橡胶圈，用于减轻***冲击波；具体的，大型橡胶圈可以使用大型车辆的废弃轮胎。A 9-segment millisecond delay electric detonator is installed in each peripheral eye. After the detonator and explosives are completed, a large rubber ring is placed above the blast hole to reduce the blasting shock wave; specifically, the large rubber ring can use the discarded tires of large vehicles.
最后，按照掏槽眼-辅助眼-周边眼的顺序，完成全断面一次起爆。Finally, according to the order of cutout eye-auxiliary eye-peripheral eye, complete the detonation of the whole section once.
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.
Claims (8)
- 基于深竖井中坚硬岩的低抛掷、低冲击***方法，其特征在于，具体的方法如下：The low-throw, low-impact blasting method based on hard rock in a deep shaft is characterized in that the specific method is as follows:(1)在竖井井筒中心布置并施工第一圈掏槽眼，施工完成后将掏槽眼的口封闭；(1) Arrange and construct the first ring of cutting holes in the center of the shaft shaft, and close the mouth of the cutting holes after the construction is completed;(2)施工辅助眼(2) construction auxiliary eye以竖井井筒中心为圆心，画两条过圆心的线，将掘进面在水平方向划分为四个区，分别为A/B/A'/B'；分别在A/A'和B/B'对称施工第一圈辅助眼，其中第一圈辅助眼中：A/A'区的辅助眼到圆心的距离相等，B/B'区的辅助眼到圆心的距离相等；A/A'区的辅助眼到圆心的距离与B/B'区的辅助眼到圆心的距离不同；Taking the center of the shaft shaft as the center of the circle, draw two lines passing through the center of the circle, and divide the excavation surface into four areas in the horizontal direction, namely A/B/A'/B'; Symmetrical construction of the first circle of auxiliary eyes, in which the first circle of auxiliary eyes: the distances from the auxiliary eyes in the A/A' area to the center of the circle are equal, the distances from the auxiliary eyes in the B/B' area to the center of the circle are equal; the auxiliary eyes in the A/A' area The distance from the eye to the center of the circle is different from the distance from the auxiliary eye to the center of the circle in the B/B' area;(3)在最外侧的辅助眼外施工一圈周边眼；(3) Build a circle of peripheral eyes outside the outermost auxiliary eye;(4)在掏槽眼、辅助眼、周边眼内安装***，按照掏槽眼-辅助眼-周边眼的顺序，完成全断面一次起爆。(4) Install explosives in the cutout eye, auxiliary eye and peripheral eye, and detonate the whole section once in the order of cutout eye-auxiliary eye-peripheral eye.
- 根据权利要求1所述的基于深竖井中坚硬岩的低抛掷、低冲击***方法，其特征在于，步骤(2)中两条过圆心的线相互垂直。The low-throw, low-impact blasting method based on hard rock in deep shafts according to claim 1, characterized in that, in step (2), the two lines passing through the center of the circle are perpendicular to each other.
- 根据权利要求1所述的基于深竖井中坚硬岩的低抛掷、低冲击***方法，其特征在于，A/A'区的辅助眼的深度与B/B'区的辅助眼的深度不同。The low-throw, low-impact blasting method based on hard rock in deep shafts according to claim 1, characterized in that the depth of the auxiliary holes in the A/A' area is different from the depth of the auxiliary holes in the B/B' area.
- 根据权利要求1所述的基于深竖井中坚硬岩的低抛掷、低冲击***方法，其特征在于，步骤(2)中辅助眼为一圈、两圈或三圈。The low-throw, low-impact blasting method based on hard rock in deep shafts according to claim 1, characterized in that the auxiliary holes in step (2) are one, two or three circles.
- 根据权利要求1所述的基于深竖井中坚硬岩的低抛掷、低冲击***方法，其特征在于，步骤(4)中，在炮眼上方放置大型橡胶圈。The low-throw, low-impact blasting method based on hard rock in a deep shaft according to claim 1, characterized in that, in step (4), a large rubber ring is placed above the blast hole.
- 根据权利要求1所述的基于深竖井中坚硬岩的低抛掷、低冲击***方法，其特征在于，每个掏槽眼内先装一个3段式毫秒延期电***，再填入1.6m的炮泥，最后再装一个1段式毫秒延期电***。The low-throw, low-impact blasting method based on hard rock in deep shafts according to claim 1, wherein a 3-stage millisecond delay electric detonator is first installed in each cut hole, and then a 1.6m gun is filled in. Mud, and finally install a 1-stage millisecond delay electric detonator.
- 根据权利要求4所述的基于深竖井中坚硬岩的低抛掷、低冲击***方法，其特征在于，第一圈辅助眼中，每个辅助眼内先装一个5段式毫秒延期电***，填入粘***泥后再装一个3段式毫秒延期电***；The low-throwing and low-impact blasting method based on hard rock in deep shafts according to claim 4, wherein, in the first circle of auxiliary eyes, a 5-stage millisecond delay electric detonator is first installed in each auxiliary eye, and filled in Install a 3-stage millisecond delay electric detonator after the clay gun mud;第二圈辅助眼中，每个辅助眼内先装一个6段式毫秒延期电***，填入粘***泥后再装一个5段式毫秒延期电***；In the second circle of auxiliary eyes, a 6-stage millisecond delay electric detonator is first installed in each auxiliary eye, and then a 5-stage millisecond delay electric detonator is installed after filling clay gun mud;第三圈辅助眼中，每个辅助眼内装一个7段式毫秒延期电***。In the third circle of auxiliary eyes, each auxiliary eye is equipped with a 7-stage millisecond delay electric detonator.
- 根据权利要求1所述的基于深竖井中坚硬岩的低抛掷、低冲击***方法，其特征在于，每个周边眼中安装一个9段式毫秒延期电***The low-throw, low-impact blasting method based on hard rock in deep shafts according to claim 1, wherein a 9-stage millisecond delay electric detonator is installed in each peripheral eye
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| ZA2021/10028 | 2021-12-06 | ||
| ZA2021/10028A ZA202110028B (en) | 2021-12-06 | 2021-12-06 | Low casting and low impact blasting method based on hard rock in deep shaft |
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| CN104390535A (en) * | 2014-10-11 | 2015-03-04 | 中国矿业大学(北京) | Medium-hard rock deep-hole cut blasting method |
| CN105823387A (en) * | 2016-02-25 | 2016-08-03 | 中铁十八局集团有限公司 | Rapid construction method for deep hole blasting of vertical shaft frozen bedrock |
| CN109724484A (en) * | 2019-01-16 | 2019-05-07 | 大冶有色金属有限责任公司 | A kind of the undercut blast hole arragement construction and well completion method of blind courtyard simultaneous shaft sin king |
| CN111692931A (en) * | 2019-12-05 | 2020-09-22 | 南京铁道职业技术学院 | Intelligent hole distribution method for tunnel blasting |
| CN112595190A (en) * | 2020-12-15 | 2021-04-02 | 中国矿业大学(北京) | Vertical shaft deep hole large circulation blasting construction method |
| AU2021102013A4 (en) * | 2021-04-19 | 2021-06-03 | China Railway 18Th Bureau Group Co., Ltd. | Deep hole pot bottom-shaped smooth-bottom smooth blasting shaft sinking method for deep circular shaft |
| ZA202110028B (en) * | 2021-12-06 | 2022-03-30 | Univ Henan Polytechnic | Low casting and low impact blasting method based on hard rock in deep shaft |
-
2021
- 2021-12-06 ZA ZA2021/10028A patent/ZA202110028B/en unknown
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2022
- 2022-04-25 WO PCT/CN2022/088921 patent/WO2023103257A1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390535A (en) * | 2014-10-11 | 2015-03-04 | 中国矿业大学(北京) | Medium-hard rock deep-hole cut blasting method |
| CN105823387A (en) * | 2016-02-25 | 2016-08-03 | 中铁十八局集团有限公司 | Rapid construction method for deep hole blasting of vertical shaft frozen bedrock |
| CN109724484A (en) * | 2019-01-16 | 2019-05-07 | 大冶有色金属有限责任公司 | A kind of the undercut blast hole arragement construction and well completion method of blind courtyard simultaneous shaft sin king |
| CN111692931A (en) * | 2019-12-05 | 2020-09-22 | 南京铁道职业技术学院 | Intelligent hole distribution method for tunnel blasting |
| CN112595190A (en) * | 2020-12-15 | 2021-04-02 | 中国矿业大学(北京) | Vertical shaft deep hole large circulation blasting construction method |
| AU2021102013A4 (en) * | 2021-04-19 | 2021-06-03 | China Railway 18Th Bureau Group Co., Ltd. | Deep hole pot bottom-shaped smooth-bottom smooth blasting shaft sinking method for deep circular shaft |
| ZA202110028B (en) * | 2021-12-06 | 2022-03-30 | Univ Henan Polytechnic | Low casting and low impact blasting method based on hard rock in deep shaft |
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