Urban Development (September 20, 2018)

Transcription

1 Urban Development (September 20, 2018) Town and Country Development Bureau Department of Public Works and Town & Country Planning Ministry of Interior, Thailand

2 Brief Introduction of URBAN DEVELOPMENT URBAN DEVELOPMENT SELF- SUSTAINABLE COMMUNITY Town and Country Development Bureau Physical support Social & Environmental support Life & Property safety Uniqueness & Living Quality Riverside habitation : Riverbank Erosion & Annual Flooding Development of Infrastructure based on Local requirements and Disaster prevention concept

3 Brief Introduction of URBAN DEVELOPMENT SELECTION METHOD : TARGET CITY for Urban Development Specific area by Thailand government policy ex.) Special economic zone (SEZ), Border crossing points, etc. National and Regional tourist attractions ex.) Koh Tao Island, Koh Lanta Island, Sukhothai, Chiangsan, etc. Economic hub and potential development ex.) Phitsanulok, Khon Kaen, etc. Based on a request from Local administrative organization

4 INFRASTRUCTURE in TARGET CITY Transportation System Water Supply System Solid waste management system NOT Main Responsibilities Collaborative work with others Waste water treatment system Flood protection and Interior drainage system Riverbank erosion protection system Support system (Landscape and Recreational area) MAIN TASK of the Bureau Uniqueness appearance

5 RIVERBANK PROTECTION

6 Riverbank Erosion Protection System Riverbank erosion severely affects living life and land loss of Thai people.

7 Riverbank Erosion Protection System Main Interior River Ping, Wang, Yom, Nan Chaophraya, Tha-Jeen, Mae-Klong Bangprakong, Pasak, Chee, Mun, Songkram Taa-Pee, Trang etc. TWO KINDS OF RIVER : INTERIOR RIVER & NEIGHBORING RIVER Neighboring River Khong, Hueng, Ruak, Sai, Salawin Kraburi, Muey, Ko-lok

8 Cause of Riverbank Erosion Natural rivers meander along their alignment leading to erosional and depositional processes on both sides of the riverbank to maintain its section. Erosional process causing cutbank of the rivers especially along border regions can make a great impact and conflict between the countries.

9 Example of Bank Erosion in bordering Rivers In the case of Khong River, from 1974 to 2008 using Aerial Photography, extremely erosion is approximately 318 km in length and 209,600 m 2 /year of area loss. Riverbank Erosion (From 1974 to 2008)

10 Example of Bank Erosion in interior waterways

11 Riverbank Erosion Protection Structure Fill embankment with stone riprap

12 Master-Batter pile Riverbank Erosion Protection Structure

13 Gravity wall: Gabion wall Riverbank Erosion Protection Structure

14 Platform structure on pile Riverbank Erosion Protection Structure

15 Riverbank Erosion Protection Structure Rip-rap revetment Master-Batter pile Platform on pile Gravity wall

16 FLOOD PROTECTION In URBAN AREAS

17 Annual Flooding Phenomenon from Cause (Annual Flooding) to Solution (Flood protection

18 Causes of Flood, Conditions and Risk area Inundation caused by runoff from the river and highland : When heavy rain occurs in the wide spread and watershed area, this causes runoff from the main river and flood in the communities along the riverbank Inundation caused by tidal flood : During the high tide and high sea level flood in the community from drainage canal and drainage capacity are interconnected, causing the flood in the areas below sea level Inundation caused by heavy rain in the local flood : When heavy rain occurs, drainage canal and drainage capacity cannot drain rainwater outside the area causing the flooding is patchy from Annual Flooding to Water approach & Land approach

19 Solution 1 : WATER APPROACH Protect community areas from flood by improve the waterway or construct new water channels and the hydraulic structure to by pass and control the water away from the target community areas.

20 Solution 1 : WATER APPROACH

21 Solution 2 : LAND APPROACH Reservior Protected Area Riverside CP Gate Flood structure P คลอง CP Riverside CP Gate Flood structure คลอง/ท อระบายน าหล ก ท อระบายน าหล กย อย ท อระบายน าแขนง ท อระบายน าแขนงย อย งานท ต องดาเน นการในการศ กษา ระบบระบายน าปฐมภ ม ระบบระบายน าท ต ยภ ม P คลอง ป ดประต ระบายน า แล วส บน าออก

22 Solution 2 : LAND APPROACH Community area Floodgate/Pumping station Floodgate/Pumping station canal P P river Protect community areas from flood by Flood wall structure for overbank flow flooding

23 Components of Flood Protection System 1. Flood structure 2. Interior drainage 3. Pumping station

24 Permanent Flood Walls

25 Semi-Permanent Flood Wall

26 Thank You!