竖井施工方案

竖井施工方案

竖井初衬完成后，进行龙门架安装。根据竖井工作坑尺寸，每座竖井土方垂直运输采用龙门架和2台5T电葫芦。龙门架

和电葫芦的设计和安装由具有专业资质的专业公司进行，并由专业检测机构检查合格后方可使用。

2.3.2龙门架安装施工流程如下：首先进行龙门架的现场

拼装，检查龙门架各部位是否牢固，然后进行吊装，将龙门架吊入竖井内。接着安装电葫芦和配重块，检查电葫芦的工作状态和安全性能。最后进行龙门架的调试和试运行，确保龙门架的正常使用。

2.3.3龙门架安装时需注意以下事项：首先要对龙门架进

行全面检查，确保龙门架的各部位没有破损和松动现象，然后进行吊装时要注意吊点的选择和吊装的平稳性。在安装电葫芦时，要注意电葫芦的工作状态和安全性能，确保电葫芦的正常使用。在进行龙门架的调试和试运行时，要注意安全，确保龙门架的正常运行。

During the n of the vertical shaft ring beam。the ground anchor should be installed according to the design and XXX n of

the gantry column。The ground anchor is made of XXX at the bottom。and then inserted into the XXX surface of the ground anchor should be XXX.

XXX should be used to weld all steel beam joints。The weight and size of the XXX by the project department before it can be put into use.

After the XXX XXX。XXX and maintenance platform should be added to the end。and a corrugated XXX be installed on the upper part of the crossbeam。After the electric hoist is installed。a safety n should be carried out for both empty and loaded ns。Only after passing the n can it be used.

The width of the electric hoist repair platform should not be less than 1.5m。and the large board should be XXX with lead wire。No probe board is allowed。Guardrails should be installed。XXX

guardrails and a safety net hanging。The electric hoist wire rope clamp should not be less than four.

XXX firmly welded。with a height of not less than 1.2m from the ground and at XXX net should be hung along the guardrail。The bottom of the protective net must be fixed firmly。The drainage facilities around the vertical shaft must be unobstructed。

XXX in the vertical shaft should be made of patterned steel plate。with a width of not less than 60cm and a step width of not less than 25cm.

2.3.2 n of Gantry Stress

Due to the n of n site ns。the widths of the vertical shaft lifting frames are not uniform。The n is based on the lifting frame of the No.7 vertical shaft。The schematic diagram of XXX frame is as follows (the actual n of the rod n is welded。XXX figure):

The n load is the weight of the soil tank (r=0.6m。h=1.0m。XXX=1cm) which is 0.382t。the weight of the soil in the tank (πr2h×1.8＝2.03t)。and the weight of the electric hoist (0.4t)。totaling 2.82t.

The rated lifting capacity of the electric hoist is 5t。and the safety factor is taken as 1.2.which means the electric hoist can bear 3.384t。meeting the requirement of the XXX。Under the load。the stress is 33.84KN.

1) Crane beam

XXX 33.84KN。XXX: it is a one-time hyperstatic structure.

Taking the maximum span of the crane beam as 8m。the stress n is based on the most XXX:

① XXX

M