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第991章 深基坑里的骸骨
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第991章 深基坑里的骸骨

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    东川市一处楼房施工工地。
    阴沉的云层压得很低,挖掘机的轰鸣声突然戛然而止。工头老李攥着对讲机的手微微发抖,对讲机里传来工人惊恐的喊声:“李哥!挖出来骨头了!看着像是人骨!”老李抹了把额头的冷汗,哆哆嗦嗦地掏出手机,按下了110。
    半小时后,警车的红蓝灯光刺破工地的阴霾。李明跳下车,目光扫过围在基坑旁的工人们,他们脸上还带着未褪去的惊恐。“小王、小周,去询问报案人和相关工人;小孙、小杨,准备现场勘查。”他简短地下达命令,声音沉稳有力。
    小王和小周快步走向脸色苍白的老李。“您慢慢说,是怎么发现骸骨的?”小周掏出记录本,笔尖悬在纸面。老李咽了口唾沫,喉结上下滚动:“就刚刚,三号挖掘机在挖地基,突然‘咔嚓’一声,像是挖到了硬东西。驾驶员下去一看,土里露出白花花的骨头,吓都吓死了!”
    “当时具体是什么时间?”小王追问。“下午两点十七分,我看了手机。”老李翻开通话记录,报案时间清晰显示在屏幕上。小周继续问道:“发现骸骨前,这片区域有没有什么异常?比如地面塌陷、有异味之类的?”老李挠了挠头,思索片刻:“倒没有啥异味,不过上个月下雨,这边有一小块地面比别处陷得深些,我们还以为是土质松,填了些碎石子。现在想来,说不定下面......”他的声音渐渐低下去,脸上泛起恐惧的神色。
    另一边,小孙和小杨已经穿好勘查服,戴着乳胶手套和护目镜,小心翼翼地靠近基坑。小孙蹲下身子,用小刷子轻轻扫去骸骨表面的泥土,小杨则举着相机,从各个角度进行拍摄。“颅骨完整,初步判断是成年人。”小孙的声音从口罩后传来,“但肋骨这里有明显的断裂痕迹,不像是自然形成的。”他用镊子夹起一块带着褐色污渍的骨头,“这块腿骨上有类似刀砍的伤痕,得带回去做进一步检测。”
    小杨仔细观察着骸骨周围的泥土:“周围的泥土分层明显,上层是新翻动的施工土,下层的土颜色更深,还混着些布料碎片。”他用镊子夹起一片破布,“看这质地,像是牛仔布料,得送去技术科化验。”小孙点点头,开始测量骸骨的位置和姿态:“尸体呈蜷缩状,双手护在胸前,这种姿势......很像是在防御什么。”
    此时,李明走了过来,目光扫过骸骨和周围的痕迹:“扩大勘察范围,方圆十米内的任何东西都可能是线索。”他转向小王和小周,“工地之前是什么情况?有没有发生过人员失踪?”小周翻开记录本:“问过了,这片区域之前是片荒地,属于城郊结合部,人员流动复杂。工地开工前,附近居民偶尔会来这里倒垃圾,但没听说过有失踪的事。”
    李明眉头紧皱:“不管怎样,先查清楚工地开工前一年的人员失踪记录,尤其是年龄、身高和骸骨相近的。”他又看向小孙和小杨,“尽快把骸骨和证物送回局里,重点检测骸骨的损伤情况、死亡时间,还有布料碎片上的信息。”
    夜幕渐渐降临,工地的探照灯的白光在潮湿的空气中晕染成朦胧的雾团。
    两人首先进行的是现场勘察拍照。
    小杨跪在基坑边缘,膝盖下的泥土被压出深色的凹陷。他屏住呼吸,左手握着微型LED勘查灯,右手持着微距镜头相机,镜头精准对准骸骨蜷缩的右手——那里半握着一枚生锈的纽扣,表面蚀刻的英文字母“J.C“在冷光下若隐若现。
    “30度角,光圈F8.0?”小杨的声音透过口罩闷闷传出。小孙半蹲在他身后,目光扫过取景器里的构图,手指在相机设置键上快速调整:“再加两档曝光补偿,泥土反光会吃掉细节。”快门声“咔嚓”响起,RAW格式文件瞬间记录下纽扣边缘的氧化层纹理,以及下方泥土中细微的拖曳痕迹。
    切换到颅骨特写时,小孙取出环形闪光灯,将其固定在镜头前端。冷白色的光线均匀笼罩住骸骨凹陷的右颞骨,裂缝处的同心圆纹路在强光下清晰毕现。“拍三组不同角度的叠焦照片。”小孙一边操作三脚架微调旋钮,一边叮嘱,“后期用HeliconFocus合成,能看清骨质断裂的层次。”
    基坑底部的骸骨蜷缩如胎儿,颅骨右侧的凹陷触目惊心。小孙掏出放大镜贴近伤口,腐骨表面的同心圆裂纹清晰可见:“钝器击打,力度足以致命。”他突然皱眉,镊子精准夹起卡在齿缝间的黑色纤维,“棉质布料,和腿骨旁的碎片材质一致。”
    在提取齿缝间的黑色纤维时,小杨将相机切换到延时拍摄模式。每间隔0.5秒自动触发一次快门,记录下镊子从接触腐骨、夹取纤维到放入证物袋的完整过程。“ISO不能超过800,噪点会吞掉纤维细节。”小孙凑近显示屏查看直方图,确认曝光参数无误后,又补充道,“把比例尺放在画面左下角,保持1:1实物比例。”
    勘查铲轻轻剥离骸骨下方的泥土,小杨的动作突然停滞。青灰色的布料残片裹着某种硬物显露出来,他屏住呼吸用刷子清理,一枚变形的银色吊坠逐渐浮现——天使翅膀造型的挂坠上,凝固的暗红色物质在鲁米诺试剂下泛起幽蓝荧光。
    “带回去做血迹检测。”小孙的声音不自觉提高,取证袋的密封声在寂静的工地格外刺耳。此时技术员小陈举着三维扫描仪靠近,激光束在骸骨表面编织出细密的网格:“现场建模完成后,能还原骨骼受力角度和掩埋姿态。”
    在骸骨左手下方,小杨发现了异常的压痕。他掏出石膏粉和注射器,小心翼翼地灌注进凹痕:“这是个长方形物体的轮廓,边缘有锯齿状花纹。”当石膏模型成型,清晰的砖块纹路让众人倒吸冷气——那分明是半截板砖的印子。
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