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世界最大直径水下盾构隧道、国内首条穿黄单洞双层盾构隧道——济南黄岗路黄河隧道于8月25日上午正式通车。 CIRCLEVILLE, Ohio -- As Jadarrius Rose drove his 18-wheeler through rural Ohio, a simple missing mudflap caught the highway patrol’s eye. The trip ended with a police dog’s powerful jaws clamping down on Rose even as he tried to surrender. As he stood with his hands up beside the highway on July 4, at least six law enforcement officers surrounded him at a distance, one calling forcefully to the K-9 handler: “Do not release the dog," highway patrol video shows.Nevertheless, a Belgian Malinois is seen on the video either breaking free or being set loose. At first, the animal seems confused, racing past Rose toward officers at the far end of the truck, then turning back and running for Rose, then 23.By then the trucker is on his knees, hands still high, as an officer shouts, “Get the dog off of him!”That day, Rose joined a long list of Black Americans attacked by police dogs, a history well documented by journalists, academics and filmmakers. Investigations into such cases have been launched regularly in recent years. For some, the scenes harken back to the Civil Rights Movement, when authorities often turned dogs and firehoses on peaceful Black protesters marching for equality. The Associated Press captured one such attack in a photograph from Birmingham, Alabama, taken in the spring of 1963. It shows two police officers setting a pair of K-9s on 15-year-old Walter Gadsden. One of the dogs lunges straight for the teenager’s belly as the other strains against his leash, panting. Over the past five years, controversial police K-9 attacks have made headlines across the U.S.Records reviewed by the AP in 2018 showed the Ohio State Highway Patrol used drug dogs in 28% of its stops involving Black motorists from 2013 through 2017, although the Black population accounts for only about 11.5% of people old enough to have a driver’s permit or license in the state. The Salt Lake City police department suspended its dog apprehension program in 2020 after a Black man was bitten and an audit found 27 dog bite cases during the previous two years.The FBI opened an investigation into the police department in Woodson Terrace, Missouri, in 2021 after cellphone video showed three officers allowing a dog to repeatedly bite a Black man. And in 2020, a Black man in Lafayette, Indiana, was placed in a medically induced coma after police dogs mauled him as he was arrested in a battery case. Circleville, located about 25 miles (40 km) south of Columbus, Ohio, resembles many rural towns across the country. The city's downtown is filled with restaurants, law offices and a bakery. Flags honoring fallen servicemen and women hang from lampposts lining Main Street. While the picture may be idyllic to some of the town’s 14,000 residents, the Rev. Derrick Holmes, longtime leader of the Second Baptist Church, said Black and white residents describe their lives very differently.“Everyone doesn’t have the same experience, even though they’re all in the same town,” Holmes said. “And I think those divisions exist around the realities of bigotry, the realities of racism.”At church services the day after the video of Rose’s arrest aired, Holmes said the congregation was appalled, but not entirely surprised.“People were horrified by it,” he said. “Angered by it. Frustrated by it. And also there was a feeling of, ‘Well, here we go again.’”This isn’t the first time Circleville police have grappled with uncomfortable questions about how they train and use police dogs. Nearly 20 years ago, a founder of the K-9 unit sued the department after he was fired for insubordination. Officer David Haynes had publicly opposed cutting training hours for dogs and their handlers to 172 hours annually from 500 hours, according to court documents. Haynes warned in a 2003 memo that “words like ‘deliberate indifference,’ ‘negligence’ and ‘failure to train’ will someday be brought up.”Today, Circleville’s K-9s train 16 hours per month, or 192 hours a year, according to the department. Police Chief Shawn Baer did not respond to numerous messages seeking comment.Employing dogs to dominate a population can be traced back at least to European settlers colonizing the Americas, when the animals were used against Indigenous people. They were introduced in Southern U.S. states to capture — and sometimes kill — enslaved Black people who escaped, said Madalyn Wasilczuk, a University of South Carolina professor and author of a law journal article titled, “ The Racialized Violence of Police Canine Force.”Wasilczuk found data on K-9 police attacks sparse, but said the animals are often used in nonviolent situations and their presence can lead to serious injury. “When you talk about an apprehension, police talk about bite and hold, and that sounds very antiseptic,” Wasilczuk said. “But when you look at a video of what happens, you see a dog doing what it does with a chew toy, which is it grabs on, it tries to hold on, its head whips back and forth and its teeth are sunk into that body part as deeply as they can.”In Rose’s case, law enforcement originally sought to pull him over because of his truck’s missing mudflap, according to a highway patrol report. Circleville Police were there to assist. What happened next can be pieced together from law enforcement video and the incident report.Rose initially didn't stop as police pursued him. When he did, he saw officers with their guns drawn and took off again. At some point, he called 911 and told a dispatcher he feared the officers were “trying to kill” him. After pulling over a second time, he delayed getting out of the truck and did not immediately get on the ground as instructed.He initially was charged with a felony for failing to comply with officers, but prosecutors dropped the case. Online court documents show Rose was charged Sept. 26 with a misdemeanor version of the offense and there is an active warrant for his arrest. Neither Rose nor his attorney responded to repeated messages seeking comment.It’s not clear why a K-9 unit was at the scene that day. Michael Gould, a former New York City police officer and founding member of the NYPD’s K-9 unit, said officers appeared to have control once they surrounded Rose with their guns drawn. And then there’s the image of Rose with his hands up.“He was compliant and not a threat to anyone,” Gould said. Rose required hospital care for the bites he suffered. Whether he sustained lasting injury is unclear. The dog’s police handler, Officer Ryan Speakman, was fired, but the Ohio Patrolman’s Benevolent Association filed a grievance on his behalf arguing the officer was fired without just cause. Circleville City Councilwoman Caryn Koch-Esterline said police have yet to account for what happened.“I’m just waiting for all the information to come out,” she said in a brief interview with the AP three months after Rose’s arrest.For those working to improve race relations in Ohio, the roadside attack was a reminder of all that is still left to do.“If it were a white man and a dog was unleashed on that individual, what would that community be saying? I bet they would be up in arms,” said Nana Jones, president of the Columbus Chapter of the NAACP.___Associated Press writers Rhonda Shafner and Aaron Morrison in New York, Mike Schneider in Orlando, Florida, and Samantha Hendrickson in Columbus, Ohio, contributed to this report.。这条新动脉的贯通,将大幅加速人才、资源与产业在黄河两岸的流动,为济南跨河发展注入强劲动能。
济南黄岗路黄河隧道自2022年开工,历时四年建成。施工采用开挖直径达17.5米的“山河号”盾构机,刀盘面积达240平方米,堪称“巨无霸”。济南黄河段为典型的“地上悬河”,河床高出南岸城区约5米,隧道需下穿黄河大堤及黄河敏感区,最深覆土达49.2米,最大水土压力达6.3巴,且长距离穿越粉质黏土层,最大硬度41兆帕。“盾构机直径每增加一分,制造难度与风险系数便呈几何级上升。”中铁十四局济南黄岗路黄河隧道项目现场负责人周祥坦言。
面对极端复杂的地质条件,项目团队依托丰富的穿黄经验,为“山河号”搭载了“五官一脑”智能化装备系统,构建掘进“智慧大脑”,实现全流程感知、预警与智能决策。刀盘采用大开口率带压复合型设计,并配备伸缩式主驱动、开挖仓伸缩摄像头等先进装置。针对钙质结核、“黏糕状”地层等难题,团队研发应用金刚石刀具、碎石机及双管路液压采石装置,成功在黄河下实现全程3.3公里连续掘进不换刀,创下同类工况纪录。

二 | 针对特大断面管片上浮问题,采用第四代同步双液注浆技术与同步检测设备,确保施工安全,其间最高日进尺18米、月进尺426米,刷新了17米级盾构施工的世界纪录。
在绿色环保方面,这条隧道北岸紧邻济南一级水源地,泥浆处理必须“零污染、零外排”。

三 | 项目自主首创“絮凝+提浓+压滤”工艺,使泥浆日处理效率提升50%,滤饼含水率降至30%以下,实现尾水循环利用与全量零外排,为邻近水源保护区的盾构工程提供了绿色范本。 济南黄岗路黄河隧道采用单洞双层布置,一次掘进实现双向通行,既集约利用地下空间,又较传统方案节省约15%投资;内部4.2米净高可满足公交、消防及救援车辆通行,极大提升通行效能,为城市跨江越河通道建设提供了新的结构范式。
施工期间,项目累计攻克开挖面稳定、悬河大堤沉降控制、特大断面上浮、泥浆绿色处理等28项技术难题,发表科技论文30余篇,申报发明专利及实用新型专利22件,形成17米级盾构施工成套技术体系,有力提升了我国特大直径盾构建造能力。
以国家最高科学技术奖获得者钱七虎院士为组长的专家组评价称,该隧道在智能化、机械化、绿色化施工方面的实践,将推动我国盾构隧道技术迈出一大步,其建成对我国水下交通隧道建设具有里程碑意义。

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