Large foundation pits even use methods such as underground continuous walls and column type bored pile interlocking to prevent the collapse of the outer soil layer; For those who are not affected by nearby construction, the well point method can be used to lower the groundwater level, and slope excavation can be used; In cold regions, natural cold gas freezing method can be used for excavation, and so on.

关于跨越必定规划的危险性较大的分部分项工程，施工单位应当组织对专项方案进行证明。基坑护栏由防护网片和立柱组成。基坑围挡护栏防护网片由2cm×4cm方管焊接组成。

The construction unit should organize experts to prove the special plan for high-risk sub projects that cross certain planning. The foundation pit guardrail is composed of protective mesh and columns. The protective mesh of the foundation pit fence is made of 2cm × Composed of 4cm square tube welding.

单片规范1.1米×1.7米，两端设有跨耳用Φ10螺栓与立柱联接固定，每个法兰盘设4个螺栓孔、顶部封闭，与地上用Φ14膨胀螺栓固定。

Monolithic specification 1.1 meters × 1.7 meters, with cross ear use at both ends Φ 10 bolts are connected and fixed to the column, and each flange is equipped with 4 bolt holes and the top is closed, which are used to connect with the ground Φ Fix with 14 expansion bolts.

设备后，护栏上边与立柱平齐，下边距地上20cm,两立柱间隔2米。所运用原资料均选用规范资料，制作严峻按图施工，规范正确，焊接点健壮，抵达防护之目的。

After the equipment is installed, the upper edge of the guardrail is flush with the column, and the lower edge is 20cm above the ground, with a distance of 2 meters between the two columns. All the raw materials used are selected from national standard materials, which are strictly constructed according to the drawings, with correct specifications and robust welding points, achieving the purpose of safety protection.

基坑护栏网分类：通用版、规范版(定制)(不同版其他产品首要差异在于资料厚度不同，运用年限不同) 产品承重：400kg基坑护栏网色彩：首要有黄黑相间、红白相间两种。具体的可按照客户要求定做。

Classification of foundation pit guardrail net: universal version, standard version (customized) (the main difference between different versions of other products is the thickness of the data and the service life.) Product weight: 400kg. Foundation pit guardrail net color: mainly available in yellow black and red white. Specific products can be customized according to customer requirements.

基坑护栏利益1.精巧美丽：选用现在调频无缝焊接技术，使焊接点无瑕;抗性好：不怕磨损、不怕雨淋、抗老化。灵活性：工程结束可拆卸重复使用。

Foundation pit guardrail benefits 1. Exquisite and beautiful: using current frequency modulation seamless welding technology, making the welding points perfect and flawless; Good resistance: no fear of wear, rain and aging. Flexibility: Removable and reusable at the end of the project.

基坑护栏网效果：分隔功用 、 阻挡功用 、 警示功用基坑护栏网运用规模：修建施工现场电梯井口防护、临边防护，也广泛用于配电检修、电气检修、改建施工、交通、公司设置警戒线及其它留步场所等。

Effect of foundation pit guardrail network: separation function, blocking function, warning function. Application scale of foundation pit guardrail network: construction site elevator wellhead safety protection, edge safety protection, also widely used for power distribution maintenance, electrical maintenance, renovation construction, transportation, company warning lines and other places to stay.