To enhance slope stability, we need to understand the essence of geotextile. The application of geotextiles has proven to be useful in bioengineering. This is usually done to enhance and maintain the state of such biosystems. Specific types of cover crops could be used to control erosion, enhance soil fertility and protect soil nutrients. But without the presence of the appropriate geotextile, unforeseen geological hazards such as landslides, slope failures, debris flows and rockslides can occur, washing the preserved nutrients and destroying biodiversity. Several geotextile materials have been proposed and used in bioengineering, but there is still an unanswered question, as to which of the materials is appropriate for a given site.
Nsiah (2012), mimicked the BORASSUS project and used elephant grass as a biological geotextile material to stabilize slopes. The questions about his project are, why elephant grass? Was elephant grass the appropriate material to be used, given the site conditions? Can the results be improved if another material is used? Or was that the cheapest material available? This research seeks to find answers to these questions by undertaking a slope stability project using different possible geotextile materials. The ability of the materials used, to control erosion, stabilize slope and promote biodiversity will be determined statistically. This will help bring to light the appropriate geotextile material for a given site.

THE MONITORING STAGE

Just like the CCTV, team members began with the monitoring stage in March. During these times, we had not experienced any rains yet so the site was still dry as we had left it.

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21Aug

GROUNDS WORK ON BOARD

The next phase which happens to be fully grounds work is on the application of the mats on the designated slope surface. The designed mats are applied in such a way that each geotextile covers a plot of 2 m by 4 m. The remaining plot which also measures as 2 m by 4 m is left bare to serve as a control. The bamboo sticks were pegged as on the slope in a staggered pattern to cover a plot of 2 m by 2 m. The elephant grass mat, giant-grid mat and maize mat were also pegged strongly to the slope of...

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21Aug

Great Learning Experience

Such a great experience and knowledge about the design of geotextiles for slope stability. The team would be excited to enlighten the public on how these geotextiles were laid on the slope. Stay tuned...

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21Aug

The bamboo design

The design of the bamboo was no much work as compared to the design of the maize and elephant grass mats. The bamboo sticks were cut into 1 m each and halved along their axis. This is because they would be pegged on the slope in a staggered pattern.

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21Aug

The Pennisetum purureum Mat

The culms if this wonderful forage is what is used to construct the mat. 10 culms are arranged in a column with 3 culms arranged on them in arrow at regular intervals.

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21Aug

The maize Mat

Inspiration behind the design of the maize mat was such that; the team wanted to develop a mat which would be lay flat on the slope without any space beneath the geotextile in connection to the ground. The individual grids of the mat should be able to trap top soil even in the midst of heavy rains. Also, the design should be cost effective to help cut down cost on slope stability in the quarry.

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21Aug

The Giant-Grid Mat

The palm fronds were cut into 2m at breadth and 4m at length. The fronds were hand woven by team members into mats.

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21Aug

WELCOME TO THE SKILLS ARENA

It’s finally time to embrace the adorning of our first love (geotextiles). This stage brings us to the gathering and design of the geotextiles to stabilize the prepared slope. The activity took place on the 4th day of our first visit to the site. All hands on deck, the team set out into the scouted areas to gather the geotextiles. The palm fronds were the easiest to find within the environs of the quarry.

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12Jul

SITE PREPARATION

The slope on which the geotextiles will be applied for stability cannot be overemphasized. This is because, in other to determine the best geotextile, all geotextiles must be subjected to the same slope conditions so as not to be biased towards others. The services of an excavator was employed to cut the slope. Dimensions were (10m by 4m) and at an angle of 60.

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12Jul

SCOUTING - A DIFFERENT DEFINITION OF FUN

Site investigation was done to identify a span of suitable sites from which one was chosen for the project. This was followed by a fun activity by team members. As another form of hiking, we went through the farms and bushes to scout for our four geotextiles. These were the palm fronds, the maize stalk, elephant grass and bamboo sticks. This was then followed by gathering of the geotextiles. The question one may ask is; why were these geotextiles chosen?

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12Jul

INCEPTIONS

The team of young intellectuals arrived on site in the very last week of February, 2018. This was on one sunny afternoon at Yongwa. A whole day was taken to settle as well as familiarize ourselves with the environment and the locals of the community.

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12Jul

The Birth of Best Geotextiles

To enhance biodiversity through slope stability, there is the need to understand the essence of geotextiles, compare them in terms of their ability to promote biodiversity in the mining, quarrying and other operations. Research shows that, not only does geotextile stabilize slopes but help to check erosion better, help retain more topsoil, providing better medium to increase flora and fauna.

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16Mar

The Two Young Intellectuals

We wish to introduce the members of the research team working on this project. The team is made up of two young intellectuals, Emily Bansah and Jamez Bayong from the University of Mines and Technology, Tarkwa, Ghana. Emily Bansah is a final year Geological student while Jamez Bayong is a final year mining student.

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11Feb