Tilt Angle Sensor Atlas 3_Petroleum Geology

C. Petroleum Geology

The inclinometer plays an important role in geological exploration, and is applied in foundations, slopes, foundation pits, etc. to prevent geological disasters。

Case 1: Application of inclination sensor in precise excavation of tunnel boring machine

In the past, the drilling and blasting method was widely used for hard rock excavation in mountain tunnels. However, under the same conditions, the excavation speed of the full face tunnel boring machine is about 8 times that of the drilling and blasting method, which has advantages such as efficiency, speed, quality, safety, economy, and environmental protection.

The excavation principle of a hard rock tunnel boring machine is to press the high pressure of the rolling cutter on the tunnel face through the rotation of the cutter head. The rolling knife rotates on the palm surface, loosening the surrounding rock. The excavated stone slag is collected by the edge scraper and enters the belt conveyor through the slag hopper. The belt conveyor then transports the stone slag along the excavation machine to the end, and finally the stone slag is loaded onto the slag truck and transported out.

The inclination sensor is an important part of all components of a full face tunnel boring machine. It can measure the inclination angle of the shield machine body and also the inclination angle of the excavation chamber. Through a series of complex calculations, it calculates data such as the distance of the excavation deviation, which plays a very important role in correcting the guidance.

A tiny difference can lead to a thousand miles. Some tunnels are very long, and even small differences can cause trouble in the later stage. Therefore, tunnel boring machines require high accuracy of inclination sensors. Moreover, the tunnel environment is humid, with varying temperature differences, and the vibration of the tunnel boring machine is strong.

The T700-A tilt sensor produced by the company fully considers the above situations, especially optimizing circuit protection and program protection in terms of vibration resistance, so as not to cause the sensor to malfunction due to excessive vibration. After testing, the long-term stability reaches 0.05 ° and has a high resolution of 0.0025 °. It has a waterproof grade of IP67 and can be used in underground humid environments. It can work at a wide temperature of -40~+85 ℃ and also meet most practical conditions. From this, it can be seen that the tilt sensor T700-A produced by Mai Xinmin Micro is competent for directional testing and control of tunneling machines, and its performance parameters are as follows:

① Range ± 15 °, ± 30 °

② Wide voltage input 9-36V

③ Wide temperature operation -40~+85 ℃

④ High vibration resistance>20000g

⑤ High resolution 0.0025 °

⑥ Waterproof grade IP67, strong resistance to external electromagnetic interference

⑦ Vibration suppression adjustment and setting can be carried out on-site

Case 2: Application of inclinometer in oil pipelines

Pipeline transportation is a long-distance transportation method that uses pipelines as transportation tools to transport liquid and gas materials. It is a specialized transportation method that transports petroleum, coal, and chemical products from the production site to the market. It is a special component of the trunk transportation in a unified transportation network. Most pipelines are used by their owners to transport their own products. Pipeline transportation not only has a large transportation volume, continuity, speed, economy, safety and stability, but also has the advantages of low investment, small land occupation, low cost, and can achieve automatic control.

In addition to being widely used for long-distance transportation of oil and natural gas, pipelines can also transport minerals, coal, building materials, chemicals, and grains. Pipeline transportation can save transit time for water or land transportation, shorten transportation cycles, reduce transportation costs, and improve transportation efficiency. So in the construction of pipelines, there are very strict requirements, such as the need for leak detection and azimuth detection of pipeline laying, among which pipeline horizontal detection is a very important indicator.

Usually, a level meter is used to detect the level of pipelines, but the level meter can only know the level of pipeline laying and cannot quantitatively measure it. Therefore, there are significant defects. Therefore, pipeline construction personnel introduced inclination sensors to measure the level of pipelines through inclination sensors. It can not only qualitatively perceive the level of pipeline laying, but also quantitatively determine the current elevation angle of the pipeline, making detection more convenient.