阅读说明：本技术 一种用于钻孔摄像孔口固定装置及安装方法 (Fixing device for drilling camera hole opening and mounting method ) 是由 蔡国强 袁志强 田鹏 于 2019-11-25 设计创作，主要内容包括：一种用于钻孔摄像孔口固定装置及安装方法,包括承载托盘,所述承载托盘设置于岩体地表面上,在岩体上钻有竖直钻孔,所述承载托盘的圆弧面设置有弧形外钢板,弧形外钢板内侧设置有内钢环,内钢环底端与弧形外钢板底端通过钢丝网连接,所述内钢环与弧形外钢板之间设置有膨胀药卷。一种用于钻孔摄像孔口固定装置的安装方法,包括以下步骤：步骤1：钻竖直钻孔；步骤2：清理竖直钻孔并放置固定装置；步骤3：放置膨胀药卷；步骤4：固定固定装置；步骤5：调整固定装置位置；步骤6：安装读尺装置及深度编码器；步骤7：进行钻孔摄像测量；步骤8：测试后拆除固定装置。膨胀药卷与水反应挤压岩体,膨胀药卷和内外钢环及岩体形成一个密实地硬化整体。(The utility model provides a be used for drilling camera hole mouth fixing device and installation method, includes and bears the tray, it sets up on rock mass ground surface to bear the tray, has bored vertical drilling on the rock mass, the arc surface that bears the tray is provided with the outer steel sheet of arc, and the outer steel sheet inboard of arc is provided with interior steel ring, and steel wire net connection is passed through with the outer steel sheet bottom of arc in interior steel ring bottom, be provided with the inflation pencil between the outer steel sheet of interior steel ring and arc. A method of installing a borehole camera aperture fixture, comprising the steps of: step 1: drilling a vertical drill hole; step 2: cleaning the vertical drilled hole and placing a fixing device; and step 3: placing the expansion medicated roll; and 4, step 4: fixing the fixing device; and 5: adjusting the position of the fixing device; step 6: installing a ruler reading device and a depth encoder; and 7: performing borehole camera shooting measurement; and 8: and (5) removing the fixing device after testing. The expansion cartridge reacts with water to extrude the rock mass, and the expansion cartridge, the inner steel ring, the outer steel ring and the rock mass form a compact hardened whole.)

1. The utility model provides a be used for drilling camera hole mouth fixing device, its characterized in that, including bearing tray, interior steel ring, the outer steel sheet of arc and wire net, bearing the tray and setting up on the rock mass ground surface, it has vertical drilling to bore on the rock mass, and the internal diameter of vertical drilling is greater than the setting of drilling camera diameter, the arc surface that bears the tray is provided with the outer steel sheet of arc, and the outer steel sheet inboard of arc is provided with interior steel ring, and interior steel ring bottom is connected through the wire net with the outer steel sheet bottom of arc, be provided with the inflation cartridge between the outer steel sheet of interior steel ring and arc.

2. A drill camera aperture fixture according to claim 1 wherein: the radian of the two symmetrically arranged arc-shaped outer steel plates is larger than the radians of the other two symmetrically arranged arc-shaped outer steel plates.

3. A drill camera aperture fixture according to claim 1 wherein: the upper end face of the inner steel ring is provided with a threaded hole.

4. A method of installing a borehole camera aperture fixture according to claim 1 comprising the steps of:

step 1: drilling a vertical drill hole with the depth of 30-50m at the position of a side slope or a stope step of open-pit ore by using a drilling machine;

step 2: cleaning scum at the periphery of the vertical drill hole to ensure that no bulge is formed at the periphery of the vertical drill hole, and placing the fixing device into the vertical drill hole;

and step 3: then placing a proper amount of expansion explosive cartridges between the inner steel ring and the arc-shaped outer steel plate;

and 4, step 4: injecting a certain amount of water into the expansion explosive cartridge along the vertical drilling hole, standing for a period of time, and forming a dense hardened whole by the expansion of the expansion explosive cartridge, the inner steel ring, the arc-shaped outer steel plate and the rock mass;

and 5: leveling the fixture for the bore and ensuring that the measuring device axis coincides with the vertical bore axis;

step 6: a ruler reading device of a measuring drilling camera device is placed on the upper surface of an inner steel ring of the fixing device, the ruler reading device is fixed through the matching of a bolt and a threaded hole in the inner steel ring, and meanwhile, a drilling camera depth encoder is installed on the upper surface of the inner steel ring;

and 7: performing drilling camera measurement, connecting a drilling camera probe with a signal wire, connecting the signal wire and a depth encoder with a drilling camera host, and performing vertical hole drilling camera test;

and 8: and after the test is finished, spraying water on the expansion cartridge of the fixing device, standing for a period of time, dismantling the fixing device, and recycling.

Technical Field

The invention belongs to the technical field of geotechnical engineering drilling camera test, and particularly relates to a drilling camera orifice fixing device and an installation method.

Background

The underground rock mass is composed of rock blocks formed by different groups of structure surfaces in a staggered manner, the development characteristics and the distribution forms of the structure surfaces in the rock mass form the structure of the rock mass, the structure surfaces develop in the rock mass and are difficult to directly observe, and various geometric parameters of the structure surfaces can not be obtained. The drilling and shooting technology is widely applied to the fields of geotechnical engineering (underground stopes, underground water power stations, deep tunnels) and the like at present. A common drilling camera device is mainly a digital panoramic drilling camera system, a conical reflector in a camera probe of the system acquires image information of a drilling hole wall of 360 degrees, a depth encoder acquires position information of the camera probe, and a panoramic image of the drilling hole wall of 360 degrees is finally acquired through measurement and later-stage data processing and analysis. Scientific researchers have conducted deep structural face type recognition and development characteristic research on the aspects of shape, width, color, staggered relation and the like of structural faces, have analyzed the correlation of structural faces of large and small scales, and have provided a statistical method of rock structural face occurrence of underground engineering. Therefore, the targeted structural plane detection technology and statistical method are important contents for developing underground structural plane research.

The current drilling is made a video recording and is measured vertical hole and is fixed with the tripod, then fixes the depth sensor with the screw on the tripod, and the scene can make fixing device produce through long-time the use and rust the scheduling problem because humidity, dust scheduling problem, and the inaccurate problem of measurement shake can appear in the screw tightening, can appear the condition that the screw thread was twisted even.

Disclosure of Invention

The method improves the defects of the traditional borehole video test method, and the currently used borehole video probe is mostly an optical borehole video probe with the diameter of 5.3cm and the length of 40.0cm and in a cylindrical shape.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a be used for drilling camera hole mouth fixing device, is including bearing tray, interior steel ring, the outer steel sheet of arc and wire net, bearing the tray and setting up on rock mass ground surface, it has vertical drilling to bore on the rock mass, and the internal diameter of vertical drilling is greater than the setting of drilling camera diameter, the arc surface that bears the tray is provided with the outer steel sheet of arc, and the outer steel sheet inboard of arc is provided with interior steel ring, and interior steel ring bottom is connected through the wire net with the outer steel sheet bottom of arc, be provided with the inflation cartridge case between the outer steel sheet of interior steel ring and arc.

The radian of the two symmetrically arranged arc-shaped outer steel plates is larger than the radians of the other two symmetrically arranged arc-shaped outer steel plates.

The upper end face of the inner steel ring is provided with a threaded hole.

A method of installing a borehole camera aperture fixture, comprising the steps of:

step 1: drilling a vertical drill hole with the depth of 30-50m at the position of a side slope or a stope step of open-pit ore by using a drilling machine;

step 2: cleaning scum at the periphery of the vertical drill hole to ensure that no bulge is formed at the periphery of the vertical drill hole, and placing the fixing device into the vertical drill hole;

and step 3: then placing a proper amount of expansion explosive cartridges between the inner steel ring and the arc-shaped outer steel plate;

and 4, step 4: injecting a certain amount of water into the expansion explosive cartridge along the vertical drilling hole, standing for a period of time, and forming a dense hardened whole by the expansion of the expansion explosive cartridge, the inner steel ring, the arc-shaped outer steel plate and the rock mass;

and 5: leveling the fixture for the bore and ensuring that the measuring device axis coincides with the vertical bore axis;

step 6: a ruler reading device of a measuring drilling camera device is placed on the upper surface of an inner steel ring of the fixing device, the ruler reading device is fixed through the matching of a bolt and a threaded hole in the inner steel ring, and meanwhile, a drilling camera depth encoder is installed on the upper surface of the inner steel ring;

and 7: performing drilling camera measurement, connecting a drilling camera probe with a signal wire, connecting the signal wire and a depth encoder with a drilling camera host, and performing vertical hole drilling camera test;

and 8: and after the test is finished, spraying water on the expansion cartridge of the fixing device, standing for a period of time, dismantling the fixing device, and recycling.

The invention has the beneficial effects that:

1. the expansion explosive cartridge reacts with water to extrude the rock mass around the drilled hole, and the expansion explosive cartridge, the inner and outer steel wall rings and the rock mass form a compact hardened whole;

2. when the drilling video test is carried out, the device can be completely fixed at the position of the orifice, and adverse factors such as shaking of the ruler reading device and the like are avoided after the device is connected with the reading device;

3. the four device dragging seats are placed on the ground surface of the drilled hole, so that the device can be better positioned in a central position before being fixed, and the device can also be better fixed;

4. the device can be used for better drilling and shooting measurement, can conveniently and accurately obtain an expanded image or a three-dimensional image, can more clearly reflect the development condition of the rock mass joint crack formed by the measured points, and more accurately represents the picture formed by drilling and shooting.

5. The method has the main advantages of recovery, strong applicability, accurate measurement of the depth of the borehole camera image, and better conformity between the image and the actual geological condition of the rock mass on site. The underground drilling geological information digitalization is realized, the operation is simple, the image is clear, and the underground drilling can be subjected to omnibearing observation imaging. When the deep hole opening is measured, the measuring accuracy of the hole opening fixing device is more obvious, the technical problem that the depth sensor is not accurately fixed in the traditional drilling shooting technology is solved, and the drilling imaging technology and the device are substantially developed.

Drawings

FIG. 1 is a front view of a borehole camera aperture fixture of the present invention;

FIG. 2 is a top view of the camera aperture fixture for drilling of the present invention;

1-bearing tray, 2-inner steel ring, 3-expansion explosive cartridge, 4-arc outer steel plate, 5-steel wire mesh, 6-vertical drilling hole and 7-rock mass.

Detailed Description

The invention is described in further detail below with reference to the figures and the detailed description.

As shown in figures 1 and 2, a fixing device for a drilling and shooting hole opening comprises a bearing tray 1, an inner steel ring 2, an arc-shaped outer steel plate 4 and a steel wire mesh 5, wherein the bearing tray 1 is arranged on the ground surface of a rock body 7, the bearing tray 1 is used for dragging the fixing device to avoid falling into a vertical drilling hole 6, the vertical drilling hole 6 is drilled on the rock body 7, the depth of the vertical drilling hole 6 is determined according to the test condition and the condition of the result of the rock body 7 to be tested, the inner diameter of the vertical drilling hole 6 is larger than the diameter of a drilling camera, the arc surface of the bearing tray 1 is provided with the arc-shaped outer steel plate 4, the arc-shaped outer steel plate 4 is provided with four arc-shaped outer steel plates, the radian of two symmetrically arranged arc-shaped outer steel plates 4 is larger than the radians of the other two symmetrically arranged arc-shaped outer steel plates 4, the inner steel ring 2 is arranged, the bottom end of the inner steel ring 2 is connected with the bottom end of the outer arc steel plate 4 through a steel wire mesh 5, an expansion cartridge 3 is arranged between the inner steel ring 2 and the outer arc steel plate 4, and the quantity of the expansion cartridges 3 is determined according to the inner diameter of the vertical drilled hole 6.

After the expansion cartridge 3 is installed, water is added for reaction, and an expanding agent in the expansion cartridge 3 reacts with the water to form a hardened body with high strength and hardness, and the hardened body is closely combined with the rock mass 7 on the inner wall of the vertical drilling hole 6.

A method of installing a borehole camera aperture fixture, comprising the steps of:

step 1: drilling a vertical borehole 6 with the depth of 40m at the side slope of the open-air ore by using a 90mm drilling machine;

step 2: cleaning scum at the periphery of the vertical drilling hole 6, processing slag blocks on the surface of the vertical drilling hole 6 to ensure that the periphery of the vertical drilling hole 6 is not raised and kept clean, putting a fixing device into the vertical drilling hole 6, and dragging the inner part of the vertical drilling hole 6 through four bearing trays 1 on the fixing device;

and step 3: placing fifteen bags of expansion explosive cartridges 3 between the inner steel ring 2 and the arc-shaped outer steel plate 4 according to the specific situation of the vertical drilling 6, and placing the expansion explosive cartridges in order;

and 4, step 4: 1Kg of water is injected into the expansion explosive cartridge 3 along the vertical drilling hole 6, the mixture is kept stand for 10min, and the expansion explosive cartridge expands to form a solid hardened whole with the inner steel ring 2, the arc-shaped outer steel plate 4 and the rock mass 7;

and 5: leveling the fixture for the orifice and ensuring that the axis of the fixture coincides with the axis of the vertical bore 6;

step 6: a ruler reading device of the drilling and shooting measurement device is placed on the upper surface of the inner steel ring of the fixing device, and the ruler reading device is fixed through the matching of a bolt and a threaded hole in the inner steel ring 2, so that the ruler reading device can be detached after an experiment and is convenient to use, and meanwhile, a drilling and shooting depth encoder is arranged on the upper surface of the inner steel ring 2, so that data testing can be stably carried out;

and 7: performing drilling camera measurement, connecting a drilling camera probe with a signal line, connecting the signal line and a depth encoder with a drilling camera host, and performing vertical hole drilling camera test;

and 8: after the test is finished, 2Kg of water is sprayed on the expansion cartridge 3 of the fixing device, and after standing for 10min, the fixing device is dismantled and recycled.