Construction shaft construction is a kind of durable structure. The shaft construction adopts shotcrete lining method + grid structure + steel mesh support + waterproof membrane + cast-in-place reinforced concrete. Horse construction shaft seals the door head at the bottom, the upper layer of the pipe before grouting, the upper layer of the reinforced concrete, the upper layer of the barbecue horse head door, the upper layer of the reinforced concrete, the lower part of the reinforced concrete, and the lower part of the horse and the lower part of the concrete under the steel frame under the grid.

　　前期采用直徑32-50mm的鋼管進(jìn)行小管灌漿，對管端和管孔進(jìn)行特殊處理。在排水管前面用風(fēng)鉆鉆這個洞。兩排之間的距離為30cm，呈扇形，高度為5-8度。管道長度2.25米，注漿為單液(水泥漿)或雙液(水泥漿)。根據(jù)土壤質(zhì)量調(diào)整注漿壓力。

　　In the early stage, the steel pipe with diameter of 32-50mm is used for small pipe grouting, and the pipe end and pipe hole are specially treated. Drill the hole with an air drill in front of the drain. The distance between the two rows is 30cm, fan-shaped, with a height of 5-8 degrees. The length of the pipeline is 2.25m, and the grouting is single liquid (cement slurry) or double liquid (cement slurry). Adjust grouting pressure according to soil quality.

　　格柵鋼構(gòu)件制造設(shè)備制造，格柵鋼構(gòu)件制造適用于地下隧道襯砌制造。鋼格柵是由鋼和鋼構(gòu)成的鋼框架。鋼格柵是由組合鋼格柵(螺栓和焊接)組成。鋼拱結(jié)構(gòu)是噴射混凝土結(jié)構(gòu)，是軟弱地層中應(yīng)用隧道結(jié)構(gòu)更有效的方法。

　　The equipment manufacturing of grid steel members is applicable to the lining manufacturing of underground tunnel. Steel grilles are steel frames made of steel and steel. Steel grating is composed of combined steel grating (bolt and welding). Steel arch structure is shotcrete structure, which is the most effective method to apply tunnel structure in soft stratum.

　　在動力隧洞施工過程中，初始襯砌施工是18字施工規(guī)范中的強(qiáng)支護(hù)規(guī)范。初始襯砌施工是保證隧道施工和施工的基礎(chǔ)。

　　In the process of power tunnel construction, the initial lining construction is the strong support specification in the 18 word construction specification. The initial lining construction is the foundation to ensure the tunnel construction and construction safety.

　　初始襯砌注漿體系不完善，注漿混凝土(含拱)不完善。由于混凝土凝結(jié)和噴發(fā)效率低，土體與混凝土之間存在縫隙。因此，有必要進(jìn)行不適當(dāng)?shù)淖{、充填孔隙。注漿壓力(0.2-0.4Mpa)通常表示為水泥漿體。

　　The initial lining grouting system is not perfect, and the grouting concrete (including arch) is not perfect. Due to the low efficiency of concrete setting and eruption, there is a gap between soil and concrete. Therefore, it is necessary to carry out improper grouting and filling of pores. Grouting pressure (0.2-0.4mpa) is usually expressed as cement paste.