阅读说明：本技术 一种野外页岩硅质含量快速评价装置 (Open-air siliceous content of shale rapid evaluation device ) 是由 林中月 刘亢 于 2020-05-24 设计创作，主要内容包括：本发明涉及一种野外页岩硅质含量快速评价装置,所述的冲击锤左端固定冲击头,右端固定永磁体,所述的冲击头、冲击锤与永磁体组成的组合体套在轴上,所述的外筒壁面设有的显示与计算系统能控制右端的动力和控制系统,外筒右端设有端盖,外筒左端设有探头,所述的外筒内壁左端台阶处设有减震环,外筒的中心设有轴,所述的轴上有刻度尺,轴中部固定有电磁体,电磁体的通电状态受动力和控制系统控制,将电磁体固定在轴上指定刻度处后,通过显示与计算系统控制动力和控制系统使电磁体通电,通过改变电磁体磁极使永磁体弹出,冲击头冲击岩石表面,探头记录声音频率,通过冲击产生的声音频率分析页岩硅质含量,最终实现页岩硅质含量快速评价。(The invention relates to a device for rapidly evaluating the siliceous content of outdoor shale, wherein an impact head is fixed at the left end of an impact hammer, a permanent magnet is fixed at the right end of the impact hammer, a combined body consisting of the impact head, the impact hammer and the permanent magnet is sleeved on a shaft, a display and calculation system arranged on the wall surface of an outer cylinder can control a power and control system at the right end of the outer cylinder, an end cover is arranged at the right end of the outer cylinder, a probe is arranged at the left end of the outer cylinder, a damping ring is arranged at a step at the left end of the inner wall of the outer cylinder, the center of the outer cylinder is provided with the shaft, a graduated scale is arranged on the shaft, an electromagnet is fixed in the middle of the shaft, the power-on state of the electromagnet is controlled by the power and control system, after the electromagnet is fixed at a designated scale position on the shaft, the power and control system is used for electrifying the electromagnet, the permanent magnet is popped out by changing the magnetic pole of the electromagnet, the impact head impacts the surface of rock, and the probe records the frequency, and analyzing the shale siliceous content through the sound frequency generated by impact, and finally realizing the rapid evaluation of the shale siliceous content.)

1. A field shale siliceous content rapid evaluation device structurally comprises an impact head (1), an impact hammer (2), a probe (3), a damping ring (4), a permanent magnet (5), an outer cylinder (6), a shaft (7), an electromagnet (8), a display and calculation system (9), an end cover (10) and a power and control system (11), and is characterized in that the impact hammer (2) is fixed at the left end of the impact hammer (1) and fixed at the right end of the impact hammer (1) by the permanent magnet (5), the outer end part of the impact head (1) is a plane, a combination body formed by the impact head (1), the impact hammer (2) and the permanent magnet (5) is sleeved on the shaft (7) and can axially slide along the shaft (7), the display and calculation system (9) arranged on the wall surface of the outer cylinder (6) can control the power and control system (11) at the right end, the end cover (10) is arranged at the right end of the outer cylinder (6), the left end of the outer cylinder (6) is provided with the probe (3), the probe (3) can measure sound frequency, a shock absorption ring (4) is arranged at a step at the left end of the inner wall of the outer cylinder (6), the shock absorption ring (4) can reduce the impact of the permanent magnet (5), a shaft (7) is arranged at the center of the outer cylinder (6), a graduated scale is arranged on the shaft (7), the right end of the shaft (7) is fixed at the center of an end cover (10), an electromagnet (9) is fixed in the middle of the shaft (7), the power-on state of the electromagnet (9) is controlled by a power and control system (11), the outer cylinder (6), the shaft (7) and the end cover (10) are made of non-ferromagnetic materials, the electromagnet (8) is fixed at a designated scale position on the shaft (7), the power and control system (11) is controlled by a display and calculation system (9) to electrify the electromagnet (8), and the permanent magnet (5) is popped up by changing the electromagnet (8), the impact head (1) impacts the surface of the rock, the probe (3) records sound frequency and transmits the sound frequency to the display and calculation system (9), and the display and calculation system (9) analyzes the shale siliceous content through the sound frequency generated by impact and displays the result, so that the shale siliceous content is rapidly evaluated finally.

Technical Field

The invention belongs to the field of geological engineering, and particularly relates to a rapid evaluation device for field shale siliceous content.

Background

In the field geological exploration, the siliceous content and the argillaceous content of rocks such as shale and slate are important parameters for analyzing the components of the field outcrop minerals, are also basic data for reservoir deposit evolution analysis, and have important significance.

Because the rock is harder when the siliceous content of the rock such as shale and slate is higher, strong weathering can not be generated when the rock is exposed out of the ground, the joint is obvious, and the edges and corners are clear. When the argillaceous content is higher, the outcrop rock sample generally produces stronger morals and manners, and the edges and corners are not clear, and the multiple development microcracks are fragile. At present, many indoor experimental facilities can accurately measure the siliceous and muddy content of rocks, but large-scale and heavy-duty equipment is inconvenient to carry during field reconnaissance. When the outcrop siliceous content of a target rock stratum is roughly judged, a geological hammer is often used for knocking the rock, and the sound generated by the rock is heard to be crisp. The crispness of the sound indicates that the siliceous content is high, while the muddy content is high when the sound is stuffy. Although effective, this simple and easy discrimination method based on the experience of geologists is subject to a large subjective judgment, and is often present in qualitative judgment, but is insufficient in quantitative judgment.

Disclosure of Invention

The invention aims to provide a device for rapidly evaluating the siliceous content of field shale, and the experimental device can rapidly and quantitatively evaluate the siliceous content of field rock sample outcrop.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a device for rapidly evaluating the siliceous content of outdoor shale comprises an impact head, an impact hammer, a probe, a damping ring, a permanent magnet, an outer cylinder, a shaft, an electromagnet, a display and calculation system, an end cover and a power and control system, and is characterized in that the impact head is fixed at the left end of the impact hammer, the permanent magnet is fixed at the right end of the impact hammer, the outer end part of the impact head is a plane, a combined body formed by the impact head, the impact hammer and the permanent magnet is sleeved on the shaft and can axially slide along the shaft, the display and calculation system arranged on the wall surface of the outer cylinder can control the power and control system at the right end, the end cover is arranged at the right end of the outer cylinder, the probe is arranged at the left end of the outer cylinder and can measure the sound frequency, the damping ring is arranged at the step at the left end of the inner wall of the outer cylinder and can slow down the impact of the permanent magnet, the shaft is arranged at the center of the outer cylinder, a graduated scale is arranged on the shaft, the right end of the shaft is fixed in the center of the end cover, the middle of the shaft is fixed with an electromagnet, the electrifying state of the electromagnet is controlled by a power and control system, the outer cylinder, the shaft and the end cover are made of non-ferromagnetic materials, the electromagnet is fixed at a designated scale position on the shaft, the power and control system is controlled by a display and calculation system to electrify the electromagnet, the permanent magnet is popped up by changing the magnetic pole of the electromagnet, the impact head impacts the surface of rock, the sound frequency is recorded by a probe, the shale siliceous content is analyzed by the sound frequency generated by impact, and finally the rapid evaluation of the shale siliceous content is realized.

The design principle of the invention is as follows:

rock sample outcrops are subject to different degrees of weathering due to exposure to the elements. When the siliceous content in shale and slate is higher, the rock is harder and has smaller weathering degree, while the siliceous content is lower, and when the argillaceous content is higher, because the clay mineral absorbs water and swells, the rock sample is easy to generate micro-cracks and has higher weathering degree. When the impact head impacts the exposed surface, the internal cracks of the rock sample with high silicon content are fewer, the rock texture is harder, the frequency of the emitted knocking sound is higher, and the sound is more brittle; and the inner cracks of the rock sample with low silicon content are more, so that the cracks can weaken and buffer the vibration energy when being knocked, and further, the sound frequency generated by knocking is lower, and the sound is stuffy. In the device, after the device is horizontally placed, the device is firstly used for knocking two or more calibration rock blocks with known siliceous content, the probe collects knocking sound frequency as calibration, and the linear relation of the set of stratum shale or slate is obtained by taking the knocking sound frequency-siliceous content of the calibration rock blocks as linear interpolation. And then fixing an electromagnet at the same scale, controlling the electromagnet to attract the permanent magnet, reversing the magnetic pole of the electromagnet by using the same voltage, so that the combination consisting of the impact head, the impact hammer and the permanent magnet impacts the surface of the rock sample at the same speed to obtain the impact sound frequency of the target rock, finding the corresponding siliceous content in a linear relation, and finally displaying the siliceous content on a display and calculation system. When a plurality of calibration rock masses exist, various methods for acquiring the silicon content and the impact sound frequency are available, such as piecewise linear interpolation and least square fitting.

The invention also provides a method for rapidly evaluating the siliceous content of the field shale by using the device for rapidly evaluating the siliceous content of the field shale, which comprises the following steps:

(1) horizontally placing the outer cylinder, fixing the electromagnet at a designated scale on the shaft, and electrifying the electromagnet to enable the permanent magnet to be adsorbed on the electromagnet;

(2) selecting a first calibration rock block with known siliceous content, contacting the left end of the outer cylinder with the surface of the first calibration rock block, changing the current direction in the electromagnet, ejecting the impact hammer to impact the rock wall, and measuring the impact sound frequency impacting the first calibration rock block by the probe;

(3) selecting a second calibration rock block with known siliceous content, contacting the left end of the outer cylinder with the surface of the second calibration rock block, changing the current direction in the electromagnet, ejecting the impact hammer to impact the rock wall, and measuring the impact sound frequency impacting the second calibration rock block by the probe;

(4) inputting the siliceous contents of the first calibration rock mass and the second calibration rock mass and the corresponding impact sound frequency into a display and calculation system;

(5) the display and calculation system obtains an association equation of the silicon content and the impact sound frequency through linear interpolation to complete device initialization;

(6) during field exploration, selecting a vertical surface of a target rock block, horizontally placing an outer cylinder, fixing an electromagnet on a shaft at the same scale as that in the step (1), and applying the same voltage as that in the step (1) to the electromagnet to enable the permanent magnet to be adsorbed on the electromagnet;

(7) the left end of the outer cylinder contacts the surface of a target rock block, the current direction in the electromagnet is changed, the impact hammer is ejected out to impact the rock wall, and the probe measures the impact sound frequency of the impact target rock block;

(8) and the display and calculation system records the impact sound frequency of the target rock measured by the probe, calculates by using the correlation equation of the siliceous content and the impact sound frequency, obtains the siliceous content of the target rock and displays the siliceous content on the display and calculation system.

And (5) selecting a plurality of calibrated rock blocks in the research area, and when the calibrated rock blocks are multiple, displaying and calculating the segmented linear interpolation by the system in the step (5).

The invention has the beneficial effects that:

according to the principle design, the device for rapidly evaluating the siliceous content of the wild shale provided by the invention has the advantages of simple structure, simplicity and convenience in operation, good feasibility and novelty, and can be used for simply, rapidly and quantitatively preliminarily evaluating the siliceous content of the outcrop of the wild shale.

Drawings

Fig. 1 is a schematic diagram of a field shale siliceous content rapid evaluation device in embodiment 1 of the present invention. In the figure: 1 impact head, 2 impact hammer, 3 probe, 4 damping ring, 5 permanent magnet, 6 outer cylinder, 7 shaft, 8 electromagnet, 9 display and calculation system, 10 end cover, 11 power and control system.

Detailed Description

Example 1

A field shale siliceous content rapid evaluation device structurally comprises an impact head 1, an impact hammer 2, a probe 3, a shock absorption ring 4, a permanent magnet 5, an outer cylinder 6, a shaft 7, an electromagnet 8, a display and calculation system 9, an end cover 10 and a power and control system 11, and is characterized in that the impact head 1 is fixed at the left end of the impact hammer 2, the permanent magnet 5 is fixed at the right end of the impact hammer 1, the outer end part of the impact head 1 is a plane, a combined body formed by the impact head 1, the impact hammer 2 and the permanent magnet 5 is sleeved on the shaft 7 and can slide axially along the shaft 7, the display and calculation system 9 arranged on the wall surface of the outer cylinder 6 can control the power and control system 11 at the right end, the end cover 10 is arranged at the right end of the outer cylinder 6, the probe 3 is arranged at the left end of the outer cylinder 6, the probe 3 can measure sound frequency, the shock absorption ring 4 is arranged at the step at the left end of the inner wall of the outer cylinder 6, and the shock absorption ring 4 can slow down the impact of the permanent magnet 5, the center of the outer cylinder 6 is provided with a shaft 7, the shaft 7 is provided with a scale, the right end of the shaft 7 is fixed at the center of an end cover 10, the middle part of the shaft 7 is fixed with an electromagnet 9, the electrifying state of the electromagnet 9 is controlled by a power and control system 11, the outer cylinder 6, the shaft 7 and the end cover 10 are made of non-ferromagnetic materials, after the electromagnet 8 is fixed at a designated scale position on the shaft 7, the power and control system 11 is controlled by a display and calculation system 9 to electrify the electromagnet 8, the permanent magnet 5 is ejected by changing the magnetic pole of the electromagnet 8, the impact head 1 impacts the surface of rock, the probe 3 records the sound frequency and transmits the sound frequency to the display and calculation system 9, the display and calculation system 9 analyzes the siliceous content of shale through the sound frequency generated by impact and displays the result, and finally realizes the rapid evaluation of the siliceous content of shale.

The undescribed parts of the present invention are the same as or implemented using prior art.