1.0 What is Landslide?
A landslide is the failure of rock, debris, soil, and the movement of grounds.
![Landslides photos Landslides photos](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2yd0W6EQ-dQiu-9qysXAvKEpmVD6sigOF84HzeEwJ-jrT-q5AOY-9fr-QlUtr1lOULSA9MQoceM7cfPK0zgTrtYg3pdPGmov4j3dknfphF4ybyqtBPwq9uTCalqVt8NkG11x4Va4AI0hWwzTBgRynvyS6Xyw8TouPjZ7GTa5E8gBqCwxGDVo7GVyLRw/w640-h362/Landslides%20photos.png) |
A sample Photo of Landslides |
2. The object of the study
- To understand landslides
- To find out the major causes of landslides in BD
- To identify the area afflicted by landslides in BD
- To Suggest the effective mitigation measures
3. Types of Landslides
![Types of Landslides Types of Landslides](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh4GMzeRTS4gp_9Y0VqNLXF2U9DfvLqnYYL0tfxihB4ACONYn9cpjTGWu-j1f1R9gV5nbVmNwhB1VonhVpTuXmFERC88m7XXSq8KwYmffOLTGsgKNCBVA0u2bJSAE9docso7kLuN30D0NJr548pZqB1FWx3N51CjBEzLjTMI5f1F2b-FlLXEjYy9N06Mg/w640-h430/Types%20of%20Landslides.JPG) |
Types of Landslides |
4. Causes of Landslides in respect of Bangladesh's hilly area!
- a. Hill cutting for brick fields
- b. Hill cutting for road expansions
- c. Deforestation in hilly areas!
- d. Prolong rainfall
- e. Water flow due to heavy rainfall
- f. Hill cutting for residential areas etc.
![Some Causes of Landslides Some Causes of Landslides](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgqIdCZ0Szop10vsi4KerzRcXKPBw_JMMHHZHrPQtk5IPHZi7wAvOQPxFzMnlgam7-XZ8bY5vdqKJYtAwdfrN8XlXUec9ZhTtNiKDj3-wsFLPXXlB31cx3q7BYAIDiaHLj5TubGVKWNbTXYskt1zahcQy05kXxM3_IGWd6mVN3RQPJogHOw2hoGcENW7w/w640-h390/Some%20couses%20of%20Landslides.JPG) |
Some Causes of Landslides: Sample photos |
![Some Causes of Landslides Some Causes of Landslides](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYv3VIoFpA1RAsTBaQMxvQ_s_VSnsQPVXjtewc0YZlTHwEmSgbIdod1vDZzMpMtJSeHjnLyO6Ka3AZ-P9QuXfoAx_NhPk3qTL6izg0vyrmkt2OsHfvcmtcNBa1i2ShCDaggWynO68numyM96yTsn6wSsR8hVQ3vAS6JFvWpQUXF4E7loLI9S6GJXqUgQ/w640-h370/Some%20couses%20of%20Landslides%202.JPG) |
Some Causes of Landslides: Detail in Pie chart |
4.a. Natural causes:
ii) Heavy and prolonged rainfall
4.b. Anthropogenic causes:
iii) Unsustainable vegetation
iv) Soil cutting for roads, cannel, drainage, buildings etc.
5. Where do landslides occur mostly in Bangladesh
![Where do Landslides occur in Bangladesh Where do Landslides occur in Bangladesh](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhpSUHlD2MTNVA1gdYzZNP1GSrAdUz_KGJRWBirOO-CfxIbp4DKqS2FKIkEyoV4vVGKFgEj7LHRpMshlfClEkPh-RrTFHTalFhPLYTuojPOWoWgHi7hfy2eeb6gBJNQQEu-8CXtURi2VLPwZ0y2ekOVDpoUoZELFvOm-e6iC25130iqOuuNq5SC_NPXww/w640-h310/Where%20do%20mostly%20happen%20landslides%20in%20Bangladesh.JPG) |
Photo: Where do Landslides occur in Bangladesh |
6. Major landslides in Bangladesh
![Major Landslides in Bangladesh Major Landslides in Bangladesh](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNPae3YGX5ICsX9S0GguRsy28y7uv_zL8dxbCjnQXPKyEPUY7mscHzhw8eCGKlqOGcr8-s3rh64i9O_QSPp4EZrwR3HYN-hjeY_WoCuWWD28YKCELFINx1m1ZK_jDBe0UkTDMimRB61Xgacb1PcNPykOqEn1LZ0F9EgLuH91ex-DCFevaakdRqJfcKnw/w640-h386/Major%20Landslides%20in%20Bangladesh.JPG) |
Chart 01: Major Landslides in Bangladesh |
![Major Landslides in Bangladesh 2 Major Landslides in Bangladesh 2](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhB_GbjXD5lFmgv_YDbTwJKam3QxZJXgVcLFsvt6PIH3uA2cKPShms9NVPWvXChevWIGGy2AitLUGjFuZeQa4HLm5q-jwg0NPGf2qoMfx77QLmsk6yWT5thpInzXT-5OG_Ob7Ofcp1Jtsi9kl8lVq9vbASqHI-9UuL-V6Ber1kDcgJlZfIubVFPcspF6w/w640-h284/Major%20Landslides%20in%20Bangladesh%202.JPG) |
Chart 02: Major Landslides in Bangladesh |
7. Some Vulnerable Landslide Areas of Chittagong City
![Some vulnerable landslide areas of Chittagong City Some vulnerable landslide areas of Chittagong City](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhqyoOZvr8kC8A9DDx_MCk-T17TUs3Zg4KfMMW54lbCagQJEDUqg3Iz5zKof0NkuHaDzt1VanOAghfKCiLEEbLfdI38ITYZJecmsopcGAlH55QVkTzc4xtu8I0iDu5l4OVN3_S1NsYAe9tD5Jjpj48-OfqAjTcAHNzZTl5s_8yWCQ5-mfRyAidB7O-2Pg/w640-h412/Some%20vulnerable%20landslides%20area%20in%20Chittagong%20City.JPG) |
Photos: Some vulnerable landslide areas of Chittagong City |
8. Effect of Landslides
- Injury and death
- Property damage
- Water quality and quantity can be affected.
- Transportation system can be damaged.
- The people will be refugee.
9. Mitigation Measures or how to prevent Landslides
Landslideapproaches may be prevented by stabilization of slope. There are three basic :
- Geometric methods
- Hydrogeological methods
- Chemical and mechanical methods
10. Example applications of mitigation measures:
![Examples of mitigation measure: Horizontal drain for dewatering Examples of mitigation measure: Horizontal drain for dewatering](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjHNE1rgXim5SI97Ybyy-Xey386EW5SVDc7nnlF9Ea7w_bTQrHc9Lb6gXSt3VYvtZmDQfqao47SqIhMI1530C_SGawQ8L3mpwhLWXggBcgX24H5HHzAyX3jl_SBRTmDMX4TEFaQFU8faPU6M79iKXq6IqrL64HOWyjDa6j63tVv_otBfzWMGSdqhAXF6g/w640-h572/Horizontal%20drain%20to%20dewatering.JPG) |
Horizontal drain to dewatering |
![Mitigation measures of Landslides: Retaining wall Mitigation measures of Landslides: Retaining wall](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhWnWFmYqYmq7ZpoPvZwqaAw6bSZ0Q33xa7tXqWkHFlsAGKzkCpDCvCZSeSVYb6uaTcsCgzPdHumVFvz88iNxngIToySj7TFNBgf9phbpTBZ1kpMfwa7daA4eAkMSu6dlx3K_nseKKhT3NSPUAlIjjbv4oW7uicCYSlmrOL5xX3lUIFl5xGfmgH9rPFDQ/w640-h414/Mitigation%20measure;%20retaining%20wall.JPG) |
Mitigation measures of Landslides: Retaining wall |
![Mitigation measures for Landslides: Fill slop and soil nails Mitigation measures for Landslides: Fill slop and soil nails](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiVDsC2Bv7hDrdNsXeSr9LjECvkuXc4rToipUTZ_Gg2S4aGPWfF5tk9yit5RoKfcrdqyaBMA4jEtgIj7spDvaAslSQRdwuUapiSO-wHf65R1-p7HrycifgD3Ui4CPhGb7V4tYP2nmwOdBcJCJ6isAP9sQ29UBWNS4dG6C27zQc8NQNpbd-kS8OQEfaIjQ/w640-h366/Mitigation%20measures;%20Fill%20slopes%20and%20soil%20nailing.JPG) |
Mitigation measures for Landslides: Fill slop and soil nails |
11. Some more points of mitigation measure
- Improving surface and subsurface drainage
- Constructing piles
- Preserving vegetation
- Rock fall protection
- Stop hill cutting
- Tree plantation and vegetation
- Development of policy
12. Slogan to stop landslides in Bangladesh
![Slogan to prevent Landslides in Bangladesh Slogan to prevent Landslides in Bangladesh](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYEo9ewEaEieNhm74iBDRRaIBV6zoAN_BnuGq8dJkRp7nwvwHKkYWag2hemMs__Ruj5XqVAPcp8DBwM16yLW3CghQlhSvtEzFkxVuUFVCGjQX2sGkkb8IIpEW6y7bQTxRU5UhPNzT931fMgswK19sErSnGNc6p-j-QaJuGgJOsViGWysmXztbcJ03okA/w640-h396/Slogan%20to%20stop%20landslides.JPG) |
Slogan to stop landslides in Bangladesh |
Landslides are killer!
Let's be aware!!
This has to be stopped now!!!
Let's stand together!!!!
Our response must start now!!!!!
Thank You.