摘要：【中文】本发明涉及桥梁梁体喷淋养护技术领域，且公开了一种现浇桥梁梁体喷淋养护装置，包括平衡配重梁，所述平衡配重梁的左右两侧均固定连接有电力驱动车，电力驱动车的底部设置有导轨，导轨的底部固定连接有桥梁本体，电力驱动车远离平衡配重梁的一侧固定连接有挂架梁，挂架梁的内壁固定连接有供水机构。本发明在对桥梁本体进行喷淋养护时，将注水管与水泵连接在一起，然后打开水泵，使水通过喷头喷淋在桥梁本体的底部及侧边上，进而对桥梁本体的底部及侧边喷淋养护，同时，打开电力驱动车，使电力驱动车在导轨上移动，进而使喷头前后移动，便于作业人员对整个桥梁本体进而喷淋养护，防止桥梁本体底部及侧边发生开裂。 【EN】The invention relates to the technical field of bridge body spraying maintenance, and discloses a cast-in-place bridge body spraying maintenance device which comprises a balance weight beam, wherein the left side and the right side of the balance weight beam are fixedly connected with electric drive vehicles, the bottom of each electric drive vehicle is provided with a guide rail, the bottom of each guide rail is fixedly connected with a bridge body, one side of each electric drive vehicle, which is far away from the balance weight beam, is fixedly connected with a hanger beam, and the inner wall of each hanger beam is fixedly connected with a water supply mechanism. When the spray maintenance is carried out on the bridge body, the water injection pipe is connected with the water pump, then the water pump is started, water is sprayed on the bottom and the side edge of the bridge body through the spray nozzle, the bottom and the side edge of the bridge body are further sprayed and maintained, meanwhile, the electric drive vehicle is started to move on the guide rail, the spray nozzle moves back and forth, the whole bridge body can be conveniently sprayed and maintained by operating personnel, and cracking of the bottom and the side edge of the bridge body is prevented.

摘要：【中文】本发明提供了一种甩丝氧化铝纤维的制备方法，包括以下步骤：a)将聚合氯化铝溶胶和硅溶胶混合后，加入纺丝助剂和晶相烧成助剂进行反应，得到待甩丝成纤的氧化铝溶胶；再加入乳化石蜡溶液，得到纺丝液；b)将步骤a)得到的纺丝液依次进行纺丝和集棉，得到甩丝纤维；c)将步骤b)得到的甩丝纤维进行热处理，得到甩丝氧化铝纤维。与现有技术相比，本发明提供的制备方法首先采用特定配方获得适合甩丝工艺的纺丝液，再结合特定工艺步骤及条件，实现较好的相互作用，得到的甩丝氧化铝纤维表面光滑，并丝少，同时纤维长且不易断裂。实验结果表明，本发明提供的制备方法得到的甩丝氧化铝纤维的纤维分散指数大于80mL/g，纤维抗震动粉碎率小于6％。 【EN】The invention provides a preparation method of a spinning alumina fiber, which comprises the following steps: a) mixing polyaluminium chloride sol and silica sol, adding a spinning auxiliary agent and a crystalline phase sintering auxiliary agent for reaction to obtain alumina sol to be spun into fibers; adding the emulsified paraffin solution to obtain a spinning solution; b) spinning and collecting cotton in turn on the spinning solution obtained in the step a) to obtain spinning fibers; c) carrying out heat treatment on the spun fibers obtained in the step b) to obtain spun alumina fibers. Compared with the prior art, the preparation method provided by the invention firstly adopts a specific formula to obtain the spinning solution suitable for the spinning process, and then combines specific process steps and conditions to realize better interaction, so that the obtained spinning alumina fiber has smooth surface, less doubling, long fiber and difficult fracture. Experimental results show that the fiber dispersion index of the spun alumina fiber obtained by the preparation method provided by the invention is more than 80mL/g, and the anti-vibration crushing rate of the fiber is less than 6%.

摘要：本发明公开了一种复合地层盾构隧道掌子面稳定支护分析方法，涉及支护分析技术领域，对掌子面及其前方区域进行区域划分，将具有相似变形趋势或失稳倾向的区域划归为同类，并为各区域设定差异化的支护控制目标，构建支护与沉降的均衡调度框架，在进入风险工况前，提取相关风险特征，并输入安全评估模型，根据评估结果对掌子面压力调节幅度、推进速率变化斜率及注浆策略进行预防性修正，在整个分析与控制过程中，利用不同维度的数值方法与现场实测进行交叉校核，当发现差异时反馈至均衡调度框架，重新修正支护策略。该分析方法通过实时数据与分区归类构建调度框架，结合安全评估与交叉校核，克服复合地层分析不足，提高掌子面稳定性与施工安全性。

摘要：【中文】本发明提供了一种氧化铝短纤维的制备方法，包括以下步骤：a)将聚合氯化铝溶胶和硅溶胶混合后，依次经水解和第一次蒸馏浓缩，得到硅铝复合纺丝液；然后加入纺丝助剂进行第二次蒸馏浓缩，再经粘度控制，得到室温粘度为1500MPa·s～2200MPa·s的纺丝液；b)将步骤a)得到的纺丝液进行纺丝，得到前驱体纤维；c)将步骤b)得到的前驱体纤维进行热处理，得到纤维棉胚；最后经挤压，得到氧化铝短纤维。与现有技术相比，该制备方法首先采用特定配方获得适合甩丝工艺的纺丝液，再结合特定工艺步骤及条件，实现较好的相互作用，得到的氧化铝短纤维纤维较短、容易分散，在甩丝过程中不易出现并丝、粘连和纤维卷曲的问题，同时得到的棉胚两侧的厚度偏差小，均匀性好。 【EN】The invention provides a preparation method of alumina short fibers, which comprises the following steps: a) mixing polyaluminium chloride sol and silica sol, and then sequentially hydrolyzing and distilling and concentrating for the first time to obtain silicon-aluminum composite spinning solution; then adding a spinning auxiliary agent for secondary distillation and concentration, and controlling the viscosity to obtain a spinning solution with the room-temperature viscosity of 1500-2200 MPa.s; b) spinning the spinning solution obtained in the step a) to obtain precursor fiber; c) carrying out heat treatment on the precursor fiber obtained in the step b) to obtain a fiber cotton blank; and finally, extruding to obtain the alumina short fiber. Compared with the prior art, the preparation method comprises the steps of firstly obtaining the spinning solution suitable for the spinning process by adopting a specific formula, then combining specific process steps and conditions to realize better interaction, obtaining the alumina short fiber with short length and easy dispersion, not easily causing the problems of doubling, adhesion and fiber curling in the spinning process, and simultaneously obtaining the cotton blank with small thickness deviation at two sides and good uniformity.

摘要：本发明公开了一种基于紧凑式带钢生产工艺流程的汽车用热轧高强度钢板的生产工艺，该工艺包括如下步骤：炼钢→连铸→均热→热连轧→卷取。本发明与现有技术相比具有如下优点：由于采用CSP流程工艺，无需传统工艺中的加微合金V、铸坯冷却检查和二次加热过程，直接进入均热炉均热后进行轧制，缩短了工艺流程，提高了生产效率，生产能耗和成本随之降低，本发明吨钢能耗为常规流程的40～41％，连铸坯收得率由常规流程的94.6％提高到97.0％，吨钢成本下降30～50美元。