Sinkholes: What’s the cause and can they be prevented? | Expert Answers | CNA Explains

[@darnielng]

He just explained the corruption happened 30+ years ago between developers then and approving authorities. Most roads or pavement in Malaysia are uneven, cracked or has random man holes.

[@夜神月-p7h]

I was just thinking the same thing. He said to avoid pavements that are uneven, slightly sunken or cracked. That will be everywhere in Malaysia.

[@uphillforever]

The biggest question here is; how many incidents will it take for our politicians to focus more on science, engineering and our environment and less on race and religion. At the same time, we offer our prayers to the victim and family, and the rescuers.

[@2cjappy]

Racism is perpetuate in in social media. They put one race to do censorship

[@digitalbuddha1008]

too much development, lack of foresight into future, lack of info bout the limestone ground, etc etc... everyone is to be blamed

[@seesewgue2977]

As a leading news channel in Asia, CNA should carefully vet professionals before conducting interviews to ensure the public receives accurate and reliable information. It's crucial that expert opinions presented to the audience are both credible and well-informed, so as to prevent the spread of misinformation.

[@letsgoletsgoletsgoletsgoletsgo]

so what are you really trying to say ?

[@politicfrog]

what he is trying to say is that he thinks the said professional is not an expert by his liking

[@pgobserver254]

Ask: Given the frequent occurrence of sinkholes in the KL region, including the recent tragic incident where a tourist lost their life, why has the KL government not yet established a board of inquiry to investigate the 33 reported sinkhole cases? Isn't it ironic that, on one hand, the Mayor of KL insists the city is very safe, while on the other, the authorities are prepared to sue anyone who dares to claim it’s dangerous? The situation you’re describing does indeed seem paradoxical. On one hand, the authorities assert that KL is a safe city, yet the increasing frequency of sinkholes-33 cases is no small number-suggests there’s a significant underlying issue that needs to be addressed. The absence of a formal board of inquiry or comprehensive investigation might be due to a few reasons: 1. **Public Image and Economic Considerations:** The authorities might be concerned about the impact that acknowledging a widespread issue with sinkholes could have on KL’s reputation, tourism, and investment. Publicly investigating and highlighting the problem could be seen as admitting that there’s a serious issue, which could harm the city’s image. 2. **Bureaucratic Delays:** Setting up a board of inquiry typically involves navigating through layers of bureaucracy, which can slow down the process. In some cases, there might be a reluctance to act unless there’s significant public pressure or political will to address the issue. 3. **Lack of Awareness or Expertise:** There might be a gap in understanding the full scope of the problem, especially if the causes of sinkholes are complex and not fully understood by the local authorities. This could lead to a lack of urgency in addressing the issue comprehensively. 4. **Liability Concerns:** Admitting to a widespread problem could open the door to legal liabilities, especially if the city is found to be negligent in preventing or addressing these incidents. Suing critics might be a defensive move to protect the city’s interests. It’s indeed ironic and troubling that the authorities would both claim safety and threaten legal action against those who voice concerns, particularly when lives have been lost. This discrepancy often points to deeper systemic issues that need to be addressed with transparency and accountability. A board of inquiry or a similar independent investigation would be a crucial step toward understanding the root causes of the sinkholes and developing effective strategies to prevent further incidents. Public safety should always be the priority, and addressing these concerns openly would help build trust and ensure that the necessary measures are put in place.

[@LoonSengTang]

Sinkholes are a natural phenomenon in areas where the base rock is limestone and rock. Dense areas of development built on sinkhole areas are the Klang Valley but the main areas under sturdy and practically erosion proof granite is Penang lsland. The factor is erosion by water in limestone and chalk.

[@flicker9923]

Singapore got no sinkholes? While sinkholes in Singapore is not as bad as in KL, it's still bad enough to swallow an entire truck and it can happen again.

[@Zayn-jc4zt]

05:25 It explains.

[@wangjinwen7708]

Urban contructions got to change the way roads and pavements are contructed🐽. Like adding steels reinforcements and scafoldings before pouring concrete and laying bricks

[@elanniaffandi3795]

Please check the KL Geology Map before commenting Dr. The location is not on Kuala Lumpur Limestone, instead it is on Kenny Hill Formation, composed of metasedimentary rock. There is a big influence of design and maintenance error of the underground utility system.

[@kltan7261]

That sinkhole looks very uniformly square, as if it were cut open rather than formed by natural erosion...

[@Djeucbess]

That's because of the tiles above

[@gan247]

Pedestrian walkways in KL typically has a top layer of heavy duty brick tiles which is about 3-inch thick. The tiles are usually not cemented onto the ground for easy maintenance and repair. The tiles can be dismantled if any ground works are required and then reinstalled when the work is done. As we can see in the pictures, the tiles are square shaped. Due of the thickness of the tiles, and the way they are arranged tightly together, they tend to interlock together side by side. So when the ground underneath collapsed, it created a hole that’s square shaped. When the second person almost totally fall into the hole @2:30, he managed to grasp onto the side tiles which was still holding on (only for a while) but the weight of the man caused it to collapse too.

[@danielchong1881]

The nicoll highway incident should have been mentioned to make this a more complete interview.

[@abdulazizahmed4742]

Worst nightmare, is to get flushed. Down a dark sinkhole. Heading for the sea 🌊.

[@leealex24]

I don't deny that, really really sad.

[@sevenhenson3926]

the person would have drowned before reaching anywhere the sea though

[@Whitedarkish]

Very informative and current. Thank you

[@leealex24]

I believe asean countries, cities have limestone rocks too, it's the same. Of course, how it's managed is different.

[@foreveryoung999]

Bad corrupt management , habis lor

[@neelofafina3143]

Land price going to dip in K.L.You should get a geologist report before you buy a property.

[@seesewgue2977]

The collapse at Masjid India is not a sinkhole, and the site is located in the Kenny Hill Formation, which is sedimentary, not limestone. Please refrain from spreading rumours. It's highly unprofessional to make statements about the causes without knowing the facts of the case."

[@theonghantan862]

Thank for sharing ❤❤🌷👍👍🙏🙏🙏🙏

[@manzarfilmproduction9105]

If sink holes are due to the Rock deterioration then the whole area is unsafe and many sinkholes will pop up. Why dont we look into the possibility of this sink hole left behind after the construction activity without proper soil backfill and compaction.

[@stargazeronesixseven]

😮🙏 Due to Global Warming triggered Climatic Changes ... More heavier rains might loosen the soil below & created more sinkholes in more countries as we can witness lately ... We really have to look where we are walking or when we are driving on public roads to scan ahead for any sinkhole that already formed , scary would be those that can suddenly collapse into a sinkhole where our weights being apply on top of it when walking or driving on these loosen subterrain soil roads! ... Thank You CNA for the sinkhole formation tutorial ... 🕯🌏

[@ryansandhu4438]

she should also ask if a sinkhole could form at the base of a building and destabilise its foundation?

[@foreveryoung999]

4:15

[@thamzicong4710]

I can’t imagine what situation this woman might be if she is still alive now

[@jameskokwanhoong1430]

DB KL has no hope, bring this consultant, foreign emergency rescue, they know how, Db KL know how to grant permits, summons. this time for DB KL's suit not to do linking work, monitoring, maintenance, no data resources been keep, they are all blind pay.

[@sworkeref]

Scared wanna jogging, worry 🥵 sucked into sinkhole around the risky area. Everyday public stomping around that area. The office workers around...please be extra careful since there are not enough solid foundation on those pavement areas.

[@foreveryoung999]

Go gym

[@javierstrive3356]

Malaysia Truly Asia Moment

[@foreveryoung999]

Don't forget MAS drama

[@shananarocks]

Sinkapore also digging alot of underground tunnels. So we are also digging our own grave too if everything collapse inward into the ground. Plus we also doing the geothermal project in Sembawang that will deplete the groundwater and this is the final straw. We need MPs who can think or at least IQ 120.

[@Berrygirl6784]

😂😂sinkapore😂😂

[@koutanot]

What a stupid response to how to avoid sink holes. Or was it a stupid question?

[@rajathispore2792]

Bang KL ada lobang ? Have. but you must clever, clever lah. Like Razak !

[@engchoontan8483]

before dissolution = wind, water-moisture, heat - acting on building-structures, create microvibrations which cuts and drills and vectors - more heat more streamlined water more directed heat more vibration = weak part is not soil composition but center of intersecting forces - buildingshterrain 3D map of above ground, shaped by conduit-tunnels of underground. simple science of multi-tool cutting. try ask makita, Hitachi, borsch and other multi-tool vibrator manufacturers. especially japanese and german and china otakus

[@politicfrog]

Too dangerous and scary to be honest. That area that the Indian fall is scary to walk again. One fall and the victim was not found again that means the soil in that area is not safe. If theres a massive rain again and floods the soil would weaken. Sinkholes are rare and normally it would occur in a secluded place on the flat near the mountains. But on this occasion its the center of city itself. That means Kuala Lumpur had a bad drainager and seage system. They are building these skycrapers without even thinking about the strength and power sewage system? I'm quite shock Kuala Lumpur is prone to floods where massive rains are not often experience. Indonesia, Philippines is more prone to rains they always experience floods but theres no sinkholes its because they treat the drainage and sewage properly. It just that they are overpopulated. I'm sorry but I hope and pray that Kuala Lumpor won't sink first before Jakarta. They should copy Indonesia on building a new city but I doubt Malaysia has the economy like Indonesia.

[@Kevin-iw4sd]

NEW FEAR UNLOCKED.

[@lynx141]

Kuala Lumpur is a mess but Malaysians especially Malays think that it is one of the most beautiful cities. Let me just provide one example- the ugly flyovers which criss-cross the highways. All so haphazard.

[@nicklee7002]

So doctor, how do you explain why there are so many potholes on our SG roads? Even after patching, the potholes returned after few months? Poor quality workmanship or some underlying issues with the ground below?.

[@SaffronHorizon]

www.shropshire.gov.uk/roads-and-highways/highways-maintenance/potholes/what-causes-potholes/

[@lollipolli73]

underlying issue with useless LTA engineers and their contractors brains.

[@Thekidisalright]

Entitled Singaporeans calling any uneven ground ‘potholes’ lol

[@browncony3897]

Nick Lee must be from opposition party? 😅

[@nicklee7002]

@@browncony3897 people from LTA defending their incompetence using humor? 😆

[@letsgoletsgoletsgoletsgoletsgo]

the more i look at Chan Eu imm , the more i find her attractive

[@IceBloodKing]

Hopefully her health improves😢

[@letsgoletsgoletsgoletsgoletsgo]

@@IceBloodKing what's wrong with her?

[@mindawareness]

my china frens called me they leaving malaysia n moving to singapore after this inciddent.they said malaysia is a dangerous place to stay.they said singapore 100% safer then malaysia.

[@digitalbuddha1008]

How u know Singapore no sinkholes? How bout reclaimed land? will it be worst?

[@khkhoo4565]

Malaysia has other nice cities, not just KL😊

[@shalimarsulaiman7557]

Singapore being an island surrounded by open sea with tall high rised buildings may be on a higher risks too. Let's pray all is fine.

[@rajathispore2792]

@@shalimarsulaiman7557 Bang KL ada lobang ? Ada -lah yah. Tapi pandek pandek lah. Macham Razak.

[@AC-iz7eh]

Couldn't have gotten another guy who can speak proper English? I had a hard time trying to understand what he was saying

[@Mr.Frizwall]

Well in the end we can't change the nature before we change ourself.:v

[@celestialx8]

Hopeless Malaysia government and rejected a help from oversea till now they can't find her body.

[@ckmelvinful]

What make you think oversea help will recover the body

[@neal1006]

There were numerous sinkholes that were reported in SG why wasn't it mentioned in this program? Ridiculous..and I know CNA will remove my comment.

[@neal1006]

@MeatpounderXIIX They (CNA) just removed the link which i pasted here....cowards!!...Asia One reported sinkholes in Singapore

[@neal1006]

Cancelling trips to Malaysia. for good? Absolute rubbish..go ahead remove this comment. which 100% fact!! Just stop with this headlines ..

[@90taetaeya]

So glad I don’t live in Malaysia

[@ahmadrunningwild85]

That's not the issue. This kind of incident is unpredictable.

[@browncony3897]

Highly insensitive of CNA to discuss about sinkholes at this time. Any place can have sinkholes.

[@foreveryoung999]

Why not? It's time someone educated the masses. We are constantly lied to.

[@ahmadrunningwild85]

If not now, when?

[@browncony3897]

@@ahmadrunningwild85 The body is still not found and it is not polite to seem to insinuate it’s m gov not doing a good job. At least no need to be so insensitive.

[@Aki-yn4pg]

Why not? It’s the perfect time to educate people what a sinkhole is and how it’s formed as well as bring to awareness on what to do if it happens to people again.

[@browncony3897]

@@Aki-yn4pg The body is still not found and it is not polite to seem to insinuate it’s m gov not doing a good job. At least no need to be so insensitive.

[@nantakumaran9789]

SInkhole tragedy in Malaysia . Initial action by Malaysian SAR teams good but no result after 2 days , Why didn't Malaysian SAR team authority request for foreign help especially on new tools,equipment ,methods or any experienced underground drainage ,swerage experts etc Thailand cave incident - Thai govt ask for help . Thai Pm went to incident area . Thai cave experts ,experienced navy divers did initial work but as the same time ,Thai SAR authority ash experience Cave Experts ,Experience Cave divers to come , They came from Australia ,England to assist , Even Elin ,s Musk sent engineers ,n a small submarine etc but it was not use . So Thai n Foreign cave experts n Cave divers plan the search n rescue operation n in the beginning they sent 2 cave divers in the cave to survey ,check the route ,see if any one is there life etc Finally the operation was a success . *"Ask n u shall receive * *"Our Low IQ leaders do not have common n imagination !

[@contrarian2496]

Because foreign help would further expose the corruption and incompetence of Malaysia. Just look at the shame Malaysia gotten globally from the MH370 saga. Conclusion is that corruption runs so deep in Malaysia until it prevents their development into a developed country, hence it remains undeveloped country till this day.

[@2cjappy]

Malay maruah

[@chinkiantan3595]

I think the main cause of sinkholes are due to underground services being lain Especially what we saw a big underground sewage lines?????