Bali is one of the regions in Indonesia that is well known for having numerous retaining wall projects designed to maintain slope stability through the application of non-woven geosynthetics. These projects can be found in various areas such as Kintamani, private villas in Ubud, Pura Taman Beji, and the BPBD Building in Tabanan.

The application of materials such as non-woven geotextile fabric is extremely important, as Bali has unique geographical conditions characterized by steep slopes, hilly terrain, and high rainfall intensity.

Why Retaining Walls in Bali Are Essential?

The construction of retaining walls in Bali cannot be treated the same as in flat or dry-climate regions. Bali’s geological conditions and tropical climate present complex challenges that require careful planning and appropriate engineering solutions, including the following:

1. Water-Saturated Volcanic Soil

Most areas in Bali are composed of volcanic soil formed from volcanic ash and sand. These materials have a porous structure and are highly absorbent, making them prone to water saturation. Unfortunately, this type of soil typically has low bearing capacity, especially during periods of heavy rainfall.

Without an effective filtration and drainage system, structural failure of retaining walls can occur within a relatively short period of time.

2. Steep Slopes and High Rainfall Intensity

Many development projects in Bali, particularly villas, resorts, and access roads are built on natural slopes with steep gradients. Examples include projects near Begawan Giri Resort in Ubud and Pura Taman Beji in Tabanan.

In addition to steep slopes, Bali also experiences high annual rainfall, with heavy rain events that can last for hours or even several consecutive days. Construction on steep terrain significantly increases the risk of landslides, especially due to accelerated surface erosion caused by intense rainfall.

For this reason, most developments in Bali require additional reinforcement systems, particularly retaining wall in Bali projects designed for long-term slope stability.

The Importance of Non-Woven Geotextile Application for Slope Protection

Retaining walls built for slope protection do not merely function as soil-retaining structures, they also serve as long-term soil stabilization systems. To ensure optimal performance and long-term structural safety, proper construction methods and reliable supporting materials are required.

This is why non-woven geotextile fabric plays a crucial role during foundation work and final construction stages. Its importance is based on several key characteristics:

1. Reliable Tensile Strength

One of the most important properties of non-woven geotextile fabric is its high and evenly distributed tensile strength, allowing it to withstand tensile forces generated by soil pressure and ground movement along slopes.

In geotextile fabric retaining wall applications, this material helps distribute soil loads more evenly, reducing stress concentration at specific points. As a result, foundation stability is improved, soil mass movement is minimized, and the retaining wall does not bear excessive direct loads.

This tensile strength is especially critical on steep slopes, where gravity forces and lateral soil pressure continuously act on the retaining wall structure.

2. Effective Erosion Prevention

In many construction projects such as villas and resorts in Ubud, Uluwatu, and Canggu, the application of non-woven geotextile fabric is a top priority for erosion control on sloped areas.

Geotextile fabric helps retain soil particles and prevents them from being washed away by surface water flow. This reduces surface erosion, maintains slope geometry, and ensures long-term slope stability. By reinforcing the retaining wall system, the risk of erosion-related damage is significantly minimized.

3. Functioning as a Filtration Medium

Bali’s high rainfall intensity during the wet season leads to excessive water absorption in volcanic soils surrounding slopes. Poorly managed rainwater can carry fine soil particles out of the soil mass, reducing stability and triggering cracks, overturning, and sliding of retaining walls.

Without a proper filtration layer, drainage systems are prone to clogging, causing water to accumulate behind the wall and increase hydrostatic pressure.

Non-woven geotextile fabric offers high permeability with micro-sized pores that are large enough to allow water to pass through, yet small enough to retain fine soil particles.

Typically, this material is installed between backfill soil and drainage materials such as gravel or crushed stone. This allows water to drain freely without transporting soil particles that could lead to erosion or drainage blockage.

Through this mechanism, slope protection with geotextile fabric becomes far more effective and reliable.

Get High-Quality Non-Woven Geotextile Only from BaliGEOTEX!

Selecting the appropriate geotextile weight (GSM) is crucial to match soil conditions and structural loads. For retaining wall projects in Bali, non-woven geotextile fabric with a weight of 250–400 GSM is highly recommended due to its balanced strength and flexibility, particularly for slope applications.

Higher GSM geotextiles are more suitable for steep slopes and areas with high soil pressure and landslide risk. Fortunately, BaliGEOTEX provides a complete range of high-quality non-woven geotextile products designed for durability and long-term performance.

BaliGEOTEX geotextile materials have been successfully used in numerous national and international infrastructure projects, proving their reliability and effectiveness. With this proven track record, the quality of BaliGEOTEX’s non-woven geotextile products can be fully trusted.

For more information about Geotextile Non Woven please contact: Whatsapp/Mobile Phone: +62 811 1721 338 (Ms. Ais) or Email : info@baligeotex.com

Retaining Wall Project in Bali: Slope Protection Using Geotextile Fabric