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Tunnel shotcrete and rock bolting requiring extensive rework? Try this “one‑pass” wet‑spraying rig.
Release time:
2026-07-11
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Summary:
Brothers working in tunnel construction—hasn’t everyone been worn down by shotcrete rework? Freshly sprayed concrete chips off, the rebound rate is sky-high, and progress keeps getting delayed. Workers toil through grueling nights amid clouds of dust, barely breaking even—and end up burning out physically in the process. To make matters worse, after switching between several machines, either the boom can’t reach those hard-to-access corners, or the diesel engines guzzle fuel at an absurd rate: by the time they finish a day’s work, half the profit has already gone straight into fuel.
In fact, it’s not that the workers you chose are inadequate—it’s that you didn’t select the right piece of equipment—one that truly “understands tunnels.”
Not long ago, I acquired a wet‑spraying boom machine, and it has exceeded my expectations—truly satisfying. This is the Zhengxun Heavy Industry wet‑spraying boom, a piece of equipment that focuses on one thing: eliminating all the headaches of construction work before they even arise. Take the most challenging issue in tunneling—the “no‑dead‑angle” requirement—as an example: its boom arm precisely covers every working surface, so workers no longer need to erect scaffolding or climb to great heights. The sprayed concrete achieves uniform thickness, eliminating the need to crouch inside the tunnel for touch‑up rework. Tasks that would normally take a full day can now be completed in half a day, sparing workers from breathing in dust and saving you the pain of bearing the cost of reworked materials.
What many people dread about shotcrete rigs is “supply disruption.” If equipment breaks down mid‑job, or if the diesel engine guzzles fuel while the electric motor can’t keep up, a single day’s downtime translates into real, tangible losses. The most hassle‑free feature of Zhengxun Heavy Industry’s wet‑spraying rig is its seamless switch between electric and diesel power. Normally, running on electricity cuts costs; when power goes out or on remote job sites, the diesel engine kicks in instantly, keeping operations going without a hitch. Paired with a custom‑designed energy‑efficient motor, fuel consumption drops by nearly 30% compared to older models—so the more you work, the more you save.
What’s most reassuring is its “stability.” With large‑diameter delivery pipelines, the concrete flows smoothly without blockages; the sprayed material is uniform and densely compacted, with a very low rebound rate, minimizing material waste. The shotcrete‑anchoring work meets quality standards on the first pass, leaving even the supervisor with nothing to criticize.
When working in tunnels, efficiency and safety are always intertwined. With no need for workers to operate up close or to risk climbing makeshift scaffolds, the equipment is stable and highly efficient—so you no longer have to stay on site late into the night monitoring progress, and your workers can work with less strain.
When it comes to construction, choosing the right piece of equipment that saves you hassle is far more effective than hiring several extra workers.
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Changsha Base:Hunan Zenxon Heavy Industry Technology Co., Ltd.
Address: Jinrong Tongxin International Industrial Park, Changsha High-tech Zone
Loudi Base:Hunan Haoda Heavy Industry Technology Co., Ltd.
Address: Loudi Avenue, Loudi High-tech Industrial Development Zone, Lianyuan City, Loudi City, Hunan Province
Telephone:400-186-0868
E-mail:3804246750@qq.com
E-mail:19967177733@163.com
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