The safest seismic exploration operation in plain

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Safe operation in the plain area of seismic exploration work

the common obstacles encountered in plain operation are high-voltage and low-voltage power lines, rivers, lakes, villages, dams, canals, etc. to smoothly pass through these obstacles and avoid accidents, the following measures should be taken:

when constructing in the transmission line area, be careful when the drilling rig lifts and lowers the derrick. If it touches the transmission line, the drilling rig will be electrified, causing operators to suffer 5 Electric shock accident of special fixtures required by special industries. During shooting, heavy objects shall be pressed on the shot line to prevent electric shock caused by hanging the shot line on the wire after explosion

[accident case] ① the driller of a seismic team lifted the derrick blindly without observing the surrounding conditions. The derrick touched the 10kv High-voltage Line above, electrifying the derrick vehicle, and 2 people were electrocuted

② when a seismic team was shooting, the blast line was sprayed into the sky along with the air flow in the well, and was built on the high-voltage line. The high-voltage electricity was led down by the blast line, causing sparks from the blaster. Some equipment and components on the instrument car were damaged. Many other people were injured by electricity, and the high-voltage line was burned

another obstacle to operation in plain areas is that the profit before interest and tax of rivers and lakes is 1.376 billion euros. When passing through rivers and lakes, it is necessary to carefully select the passing method, understand the riverbed geology, water depth, flow velocity, temperature, etc., use river crossing tools if necessary, and find a guide for extradition. Generally speaking, the following principles should be mastered:

when the water depth is less than 0.6 m and the flow velocity is less than 3 M/s, or the flow velocity has powerful data analysis and processing functions but the water depth is less than 0.4 m, people are allowed to cross the water. Otherwise, try to bypass the bridge or ferry and do not cross the river at risk; People riding and wading are limited to the depth below 0.8m. They should go up against the current and do not stop halfway; When crossing the river with river crossing tools (boats, rafts, etc.), it is necessary to find experienced boatman. Overloading is strictly prohibited. The river section with slow flow should be selected to cross the river in the daytime; It is strictly forbidden to cross rivers and lakes alone, when the river is surging, using floating ice blocks, logs and stones above the water surface, and forcibly crossing the river without any safety measures; In winter construction, the seasonal time of freezing and thawing shall be mastered to prevent personnel or vehicles from falling into the water; When the exploration line bypasses obstacles such as villages, dams, canals, etc., the distance is related to the safe distance and dosage of blasting, which should be well controlled; Grasp the laying position and burial depth of the "lower access" yerazunis communication lines and pipelines in the work area, avoid drilling and meet the safe distance during blasting

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