-
About UsZHONGTAI HENGBANG Engineering Technology Co., Ltd. is located in the Academician Entrepreneurship Base of Tai'an National High-Tech Industrial Development Zone, Shandong Province. The company is a comprehensive service provider specializing in engineering consulting and design, materials R&D and manufacturing, as well as operations and maintenance. With strong technical expertise and robust R&D capabilities, its products are primarily applied in critical areas such as water conservancy infrastructure projects, transportation infrastructure initiatives, and environmental protection solutions for isolating and preventing leakage from urban waste and highly hazardous industrial solid waste.
-
ProductsZHONGTAI HENGBANG Engineering Technology Co., Ltd. boasts production lines sourced from countries including Germany, Italy, Denmark, Belgium, and Switzerland, adhering to rigorous quality management systems and testing standards. We are equipped with advanced testing equipment capable of evaluating tensile strength, creep resistance, UV protection, water permeability, flame retardancy, antistatic properties, chemical corrosion resistance, and oxidation performance.
-
Application CasesThe product is primarily used in hydraulic infrastructure projects, transportation infrastructure projects, and environmental protection applications—including the isolation and impermeability of municipal waste and highly hazardous industrial solid waste.
-
BlogPrioritizing technological advancement and innovation, our company is committed to fulfilling user needs to the fullest extent possible.
What steps and knowledge do you need to understand regarding the construction and installation of waterproofing boards for tunnels in Guizhou?
Release date:
2020-11-30
The installation should follow a bottom-up sequence, with tension applied appropriately and sufficient slack left (the ratio of the actual铺设 length to the arc length is 10:8). During inspection, ensure that the entire surface area of the waterproof membrane in the Tongren Tunnel in Guizhou makes full contact with the surrounding rock mass. Guizhou Tongren Tunnel Waterproof Membrane Construction Preparation
Guizhou Tongren Tunnel Waterproof Membrane Before paving, use a self-made trolley designed for tunnel under-excavation treatment to address any undercuts in the tunnel. Guizhou Tongren Tunnel Waterproof Membrane The narrow-width waterproof membranes must be joined together on a spacious, level area outside the tunnel to create larger sheets. Guizhou Tongren Tunnel Waterproof Membrane 。 Guizhou Tongren Tunnel Waterproof Membrane The overlap width is 10 cm. Use a crawling-type hot welder for bonding.
Guizhou Tongren Tunnel Waterproof Membrane Inspection must be carried out to check for defects such as discoloration, waviness (uneven thickness), blemishes, knife marks, tears, and small holes. If any quality concerns arise, tension tests, waterproofing tests, and weld tensile strength tests should be conducted.
Hanging Guizhou Tongren Tunnel Waterproof Membrane After the trolley is in place, use electric or oxy-welding to cut off flush all exposed anchor heads, rebar mesh ends, and other metal components at their roots, then apply mortar to cover them completely, preventing punctures that could damage the waterproof membrane of the Tongren Tunnel in Guizhou. For areas with severely uneven spray-on anchoring surfaces, chipping and leveling are required. Once the trolley is properly positioned, recheck the cross-sectional dimensions to ensure the lining thickness meets the specified requirements before proceeding with the installation of the waterproof layer.
2, Guizhou Tongren Tunnel Waterproof Membrane Laying and anchoring
Once the construction preparation work is complete, pre-cut and processed non-woven fabric will be laid out on the area to be worked on, and then securely fastened using fixing washers paired with cement nails.
The longitudinal spacing of the nail holes for fixing the non-woven fabric is 0.5–0.8 m, while the circumferential spacing is 0.5–0.8 m at the sidewalls, 0.5 m at the arch, and 1.0–1.5 m at the base slab—arranged in a plum-blossom pattern.
After completing the laying and securing of the nonwoven fabric, proceed to Guizhou Tongren Tunnel Waterproof Membrane Use a simple trolley to lift and position the component at the installation site, then carefully join it to the fixed washers by electric heating welding—starting from the arch section and working outward on both sides—to ensure a tight connection. During construction, pay close attention to controlling the welding temperature to prevent burn-through. Guizhou Tongren Tunnel Waterproof Membrane Or damage the retaining washer
3, Guizhou Tongren Tunnel Waterproof Membrane Welding of
Welding Guizhou Tongren Tunnel Waterproof Membrane Overlap Joint: At the joint between two large-format waterproof panels for the Tongren Tunnel in Guizhou, leave a 10-cm overlap on both the top and bottom sheets. Use a hot-welding machine to securely fuse the overlap, ensuring the weld width is at least 2 cm. When using a dedicated compression welding tool, carefully monitor the welding temperature to avoid overheating, which could lead to burning or scorching. Guizhou Tongren Tunnel Waterproof Membrane Or damage the retaining washer.
4. Guizhou Tongren Tunnel Waterproof Membrane Laying method
(1) Nail-free heat-sealing method:
① Substrate Surface Inspection
② Guizhou Tongren Tunnel Waterproof Membrane Construction of the cushioning layer
③ Installation of Thermoplastic Plastic Washers
④ Guizhou Tongren Tunnel Waterproof Membrane Laying process: First, accurately mark the longitudinal centerline of the tunnel onto the foam plastic matting at the tunnel’s crown. Then, align the transverse centerline of the waterproof membrane precisely with this marked line. Next, thermally weld the crown area to the plastic circular pads, starting from the tunnel’s apex and allowing the membrane to hang down evenly on both sides—continuously welding it to the circular pads as you lay it out.
(2) Nail-free cold-adhesive paving method:
During construction, first level the initial lining base surface. Apply adhesive to and simultaneously secure the waterproof membrane from bottom to top or from outside to inside. When fixing, use a nail gun to attach plastic washers, pressing the waterproof membrane outward against the washers. After applying adhesive, patch any areas around the nail gun holes using slightly larger pieces of the same membrane material.
5, Guizhou Tongren Tunnel Waterproof Membrane Installation steps:
① Laying out Guizhou Tongren Tunnel Waterproof Membrane Guizhou Tongren Tunnel Waterproof Membrane Construct the secondary lining 10–20 meters ahead of schedule, using an automatic hot-welding machine for welding, and employ a dedicated carriage for laying the material.
② First, perform layout and mark out the reference line; after a trial placement, finalize the arrangement. Guizhou Tongren Tunnel Waterproof Membrane Minimize the number of joints in the single-loop design.
③ Combined Guizhou Tongren Tunnel Waterproof Membrane The installation uses large-scale prefabrication outside the tunnel, followed by lifting and unrolling the entire roll inside the tunnel—eliminating the need for nails during the process. Installation proceeds from the arch crown outward to both sides. Guizhou Tongren Tunnel Waterproof Membrane The installation should allow for a certain amount of slack. On the shotcrete surface, use a ZIC-16 electric hammer drill equipped with an Φ8 drill bit to create holes, then secure the anchors using plastic expansion bolts. The spacing between anchor points is 100 cm along the sidewalls, 50 cm at the arch, and 70 cm along the arch waist. Along the tunnel’s length, tie wire securely around these anchor points. Guizhou Tongren Tunnel Waterproof Membrane Secure it tightly with straps and wire.
Guizhou Tongren Tunnel Waterproof Membrane The installation should follow a bottom-up sequence, with tension applied appropriately and sufficient slack left (the ratio of the actual铺设 length to the arc length is 10:8). During inspection, ensure that the entire surface area of the waterproof membrane in the Tongren Tunnel in Guizhou makes full contact with the surrounding rock mass.
④ Guizhou Tongren Tunnel Waterproof Membrane Before laying, securely fasten the cushion layer to the substrate using nail guns equipped with thermoplastic round washers, ensuring the layer remains smooth and straight. The overlap width of the cushion layer should be 50 mm, and spot welding can be performed using a hot-air welding gun for each section. Guizhou Tongren Tunnel Waterproof Membrane Arrange the washers in appropriate rows, ensuring each row is positioned approximately 40 cm away from the edge of the waterproof membrane in the Tongren Tunnel, Guizhou. Anchor point spacing: 2–3 points per square meter along the sidewalls, and 3–4 points per square meter at the arch crown.
ZHONGTAI HENGBANG Engineering Technology Co., Ltd. is a comprehensive service provider integrating engineering consulting and design, material research and development, production manufacturing, as well as operation and maintenance services. With robust technical expertise and strong R&D capabilities, our products are specifically tailored for critical applications in areas such as water conservancy infrastructure projects, transportation infrastructure initiatives, and environmental protection fields like urban waste management and the safe containment of hazardous industrial solid waste. The company boasts advanced production lines sourced from Germany, Italy, Denmark, Belgium, Switzerland, and other countries, all operating under stringent quality management systems and rigorous testing standards. We are equipped with state-of-the-art equipment capable of evaluating key properties—including tensile strength, creep resistance, UV durability, permeability, flame retardancy, anti-static performance, chemical corrosion resistance, and oxidation stability—ensuring that every product meets the highest industry benchmarks. Furthermore, ZHONGTAI HENGBANG has earned prestigious certifications such as CRCC, ISO 9001, ISO 14001, OHSAS 18000, and MA approval. We also hold official test reports issued by China’s Ministry of Railways and Ministry of Water Resources, along with the EU CE certification, and have undergone thorough evaluations by specialized laboratories in Russia, Australia, the United States, and other regions. Committed to delivering cutting-edge geosynthetic materials and unparalleled service, we proudly support a wide range of projects—including reinforced soil retaining walls, soft ground stabilization, land reclamation and seawall construction/maintenance, hydraulic engineering, slope remediation and ecological restoration, road construction, and mining projects—ensuring optimal performance and long-term reliability.
Latest Updates
ZHONGTAI HENGBANGPET Polyester Welded Geogrid Advantages
Relying on independent innovation and technological expertise, Taihengbang Engineering Technology Co., Ltd. has achieved groundbreaking progress in the geosynthetics field. The company’s newly developed and produced PET polyester-welded geogrids, backed by multiple core patented technologies, have set a high-standard industry benchmark. Built on high-strength polyester materials and crafted through advanced precision welding techniques, these geogrids feature a robust, stable mesh structure, delivering exceptional performance in terms of tensile strength, durability, and environmental adaptability.
Jingzhe | Spring thunder rumbles, and all things grow.
Around March 5, the first spring thunder begins to rumble, rousing hibernating insects and snakes from their winter slumber. Peach blossoms start to peek out on the branches, and the earth softens as new buds emerge.
Geotube: A sludge dewatering tool—your eco-friendly engineering ally
A geotube is a tubular bag made by sewing together high-strength geotextile fabric. Utilizing the natural principle of gravity filtration, it removes water from sludge, effectively separating mud from water.
February 2, Dragon Raises Head: A Forgotten Spring Festival Celebration
On the second day of the second lunar month, spring returns to the earth, and all things awaken from their winter slumber. On this day—gradually fading from modern memory—lies one of the deepest cultural codes of the Chinese nation. The "Dragon Rises" is not just a seasonal marker; it’s also a spiritual totem for the Chinese people—a cherished legacy of our agricultural civilization.
Construction Plan for Laying and Welding of Composite Geomembranes
Construction Plan for Laying and Welding of Composite Geomembranes
Introduction to Drainage and Waterproofing Sheets
Introduction to Drainage and Waterproofing Sheets
ZHONGTAI HENGBANG Technology Co., Ltd.
Address: East Section of Zhongtianmen Avenue, Tai'an High-tech Zone, Shandong Province
Service Hotline