天气预报15天查询> 家居> 家用简易打井方法

家用简易打井方法

更新时间: 2021-04-10 14:24:19     

1、大口井的施工方法有两种:大开槽法,人工开挖或爆破施工。沉井法,排水施工或不排水施工。

2、对口抽式的施工,一般采用机械吊锤和人工吊锤两种方法,利用吊锤的重力作用将吸水管直接打入地下。结构简单、操作方便、安全;2省时、省力、耗资小;作业面积小。

关键词: 家用 简易 打井 方法

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-688489/ | 耗时:0.7946 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=688489 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=688489 LIMIT 0,1
select * from tbl_Articles_sphinx where id=688489 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(714461,3530026,3532188,3528871,3542266,3532005,442853,3544319,3533044,3528948,3527379,3533245,3532483,569266,3543184,3531455,1099119,3542346,3542208,3533824,3529169,3528837,372312,3527495,3531403,3543659,1861304,3529727,3532500,3531789) ORDER BY field (ArticleID,714461,3530026,3532188,3528871,3542266,3532005,442853,3544319,3533044,3528948,3527379,3533245,3532483,569266,3543184,3531455,1099119,3542346,3542208,3533824,3529169,3528837,372312,3527495,3531403,3543659,1861304,3529727,3532500,3531789)