|
Effect comparison | Rapid tunneling system technology | Traditional tunneling technology |
|
Reduce the number of support operations in the unsupported roof area | ① The left and right drilling rigs need 1 person to operate each and 1 person to assist (3 persons). | ① There are two cable anchors head-on, each of which requires two people to operate and one person to assist (5 people). |
② 2 typhoon coal drills make up the assistance, each requires 2 persons (4 persons). | ② 2 typhoon coal drills make up the assistance, each requires 2 persons (4 persons). |
③ The number of people supported by the airborne bolter is 7 people. The support staff is reduced by 20% per shift. | ③ The number of anchor anchors is 9 people. |
Improve work efficiency | ① It takes 15–20 minutes for the 220M double-anchor roadheader to complete the temporary support operation, and the efficiency is increased by 35%. | ① The manual laying of anchor nets, steel belts, and hydraulic point posts is labor-intensive, requiring 25–30 minutes. |
② Bolt support: it takes 6 to 8 minutes to complete one bolt support, and the efficiency is increased by 20%. | ② Bolt support: it takes 8 to 10 minutes to complete one bolt support. |
③ Anchor cable support: it takes about 8–10 minutes to complete one anchor cable support, and the efficiency is increased by 38%. | ③ Cable anchor support: it takes about 14–17 minutes to complete one anchor cable support. |
④ The tail can move automatically at any time, and it takes about 1 min to move 1 row at a time; according to the same footage, the self-moving time only needs 8 min. | ④ Each time the belt conveyor tail (including the anchor fixation of the construction site) is pulled and moved 8 rows, it takes about 60 minutes. |
|
Reduce labor intensity and noise | The mechanized operation of anchor rods and anchor cables avoids water splashing during drilling, which significantly reduces the labor intensity of workers. The hydraulic drilling rig has low noise and high safety, which improves the working environment of workers. | The manual anchor cable machine has high labor intensity, high noise, poor safety, large water spray, and poor working environment. |
|