#inclinometer

Safavid brass Astrolabe, Tabriz, Iran, 1705-06 AD.

5¾ in (14.6 cm) high overall; 3⅜ in (8.5 cm)

Dalam dunia konstruksi dan teknik sipil, monitoring geoteknik berperan besar dalam menjaga keamanan proyek. Alat-alat seperti inclinometer, piezometer, dan settlement gauge digunakan untuk memantau kestabilan tanah dan struktur.

Giteknindo adalah salah satu penyedia alat geoteknik terbaik di Indonesia, menawarkan berbagai solusi pemantauan untuk proyek bendungan, tambang, jalan tol, dan infrastruktur lainnya.

Dengan alat yang akurat dan layanan teknis profesional, Giteknindo membantu memastikan proyek berjalan aman dan efisien.

A slope inclinometer is a crucial tool for monitoring ground movement and ensuring safety in construction, mining, and geotechnical projects. However, for the inclinometer to provide precise data, proper installation is essential. In this guide, we’ll walk you through the steps to install a slope inclinometer correctly, ensuring accurate and reliable readings.

Why Proper Installation of a Slope Inclinometer Matters?

Installing a slope inclinometer incorrectly can lead to inaccurate data, compromising structural safety and increasing the risk of unexpected failures. Proper installation ensures:

Precise measurements of ground displacement.

Reliable long-term monitoring for slope stability.

Accurate detection of soil or structural movement before it becomes critical.

Now, let’s dive into the step-by-step installation process.

Step 1: Select the Right Installation Site

Before drilling or placing the inclinometer casing, choose an appropriate location based on:

The area’s geotechnical conditions (such as soil type and slope gradient).

The purpose of monitoring (landslides, retaining walls, embankments, etc.).

Access points for regular readings and maintenance.

Step 2: Drill a Borehole for the Inclinometer Casing

Once the site is selected, drill a borehole to the required depth using a rotary drill rig. Keep in mind:

The borehole must be deep enough to reach stable ground.

It should have a slightly larger diameter than the inclinometer casing.

The borehole should be vertically aligned to prevent skewed readings.

Step 3: Install the Inclinometer Casing

The inclinometer casing acts as a guide for the probe and ensures consistent readings. To install it:

Assemble the Casing: Connect the segments securely, aligning the keyways properly.

Lower the Casing: Gently place it into the borehole, avoiding excessive bending.

Backfill with Grout: Fill the borehole with a cement-bentonite grout mix to stabilize the casing and minimize lateral movement.

Step 4: Check Casing Alignment and Settlement

After installation, ensure that:

The casing remains plumb and stable within the borehole.

The keyways are aligned in the correct direction for accurate readings.

The top of the casing is securely capped to prevent debris entry.

Step 5: Allow Grout to Cure

Let the grout set for 24 to 48 hours before taking initial readings. This prevents casing movement due to uncured grout, ensuring data accuracy.

Step 6: Take Baseline Readings

After installation, conduct a baseline reading using the slope inclinometer probe:

Insert the probe into the casing, aligning it with the keyways.

Take readings at regular depth intervals, typically every 0.5 meters (1.5 feet).

Record the data and compare it with future measurements to detect movement trends.

Step 7: Schedule Regular Monitoring

To ensure accurate long-term monitoring:

Take readings weekly or monthly, depending on the project’s risk level.

Use the same probe orientation and depth intervals for consistency.

Analyze trends to detect potential slope failures or soil movement early.

Final Thoughts

Instrumen ini memberikan data kuantitatif yang signifikan tentang besarnya kemiringan dan variasi terhadap waktu. Memberikan informasi lengkap tentang pola deformasi dan efektivitas tindakan pengendalian kontruksi.

Sistem inclinometer membantu dalam memonitoring perilaku setelah kontruksi dan menampilkan kondisi yang berpotensi berbahaya yang dapat mempengaruhi stabilitas struktur, pondasi dan area disekitarnya.

Inclinometer Digital System digunakan untuk mengukur gerakan leteral dalam aplikasi seperti :

Pergerakan tanah di zona longsor

Mendeteksi bidang geser pada struktur hidrolik

Mengukur stabilitas selama kontruksi

Defleksi diagfragma / dinding penahan dan tiang pancang dibawah beban.

Secara umum alat ini terdiri dari :

Akses casing dan perlengkapannya

Probe kemiringan

Kebel koneksi dengan rel dan penahan kabel