CN-116716907-B - Sump precipitation construction method

CN116716907BCN 116716907 BCN116716907 BCN 116716907BCN-116716907-B

Abstract

The application relates to a water-collecting pit dewatering construction method, which belongs to the technical field of building construction and comprises the following steps of S1, digging a groove at the bottom of a water-collecting pit, arranging a water pump in the groove, S2, gradually reducing the height of a water level line in the water-collecting pit through water pumping of the water pump, adjusting the size of an adjustable protection cylinder according to the size of the groove, installing the adjustable protection cylinder at the position of the groove, wrapping the water pump, S3, pouring cushion layers on the four walls and the bottom of the water-collecting pit, S4, after the work is completed, pulling out the protection cylinder, taking out the water pump, pouring concrete into the groove, sealing the groove and completing dewatering work of the water-collecting pit. The application has the effect of improving the construction quality.

Inventors

KAN YISEN
LIU WEI
ZHOU HUAJIE
SONG WENQI
CAO XINPENG

Assignees

北京崇建工程有限公司
中国二十二冶集团有限公司

Dates

Publication Date: 20260505
Application Date: 20230630

Claims (5)

1. The sump precipitation construction method is characterized by comprising the following steps of: S1, digging a groove (1) at the bottom of a water collecting pit, and arranging a water pump in the groove (1); S2, gradually reducing the height of a water level line in the water pit through pumping water by a water pump, adjusting the size of the adjustable protection cylinder (2) according to the size of the groove (1), and installing the adjustable protection cylinder (2) at the position of the groove (1) to wrap the water pump; S3, pouring a cushion layer (3) on the four walls and the bottom of the water collection pit; s4, after the work is completed, the protective cylinder is pulled out, the water pump is taken out, concrete is poured into the groove (1), the groove (1) is plugged, and the water-reducing work of the water collection pit is completed; The adjustable pile casing (2) is characterized by comprising a main plate (21), an auxiliary plate (22) and side plates (23), wherein the main plate (21) and the auxiliary plate (22) are parallel to the bottom of a groove (1), one end of the auxiliary plate (22) is embedded in the main plate (21), the auxiliary plate (22) is in sliding connection with the main plate (21), the side plates (23) are provided with two pieces, the side plates (23) are fixed at two ends, away from each other, of the main plate (21) and the auxiliary plate (22), the two side plates (23) are perpendicular to the bottom of the groove (1), and the two side plates (23) are oppositely arranged; An electric push rod (24) is arranged between the two side plates (23), the power end of the electric push rod (24) is fixedly connected with one side plate (23), and one end of a piston rod of the electric push rod (24) is fixedly connected with the other side plate (23); a fixed block (5) is fixed on a side plate (23) fixed with the main plate (21), a positioning block (6) is arranged in the fixed block (5) in a sliding manner, a starting block (7) is arranged on the fixed block (5) in a sliding manner along the horizontal direction, the sliding direction is arranged along the vertical direction, when the adjustable protective cylinder (2) is installed in the groove (1), the starting block (7) penetrates through the fixed block (5), one end of the positioning block (6) penetrates through the side plate (23) to be embedded in the side wall of the groove (1), and the other end of the positioning block (6) is tightly abutted with the starting block (7); A plurality of fixing grooves (8) are formed in the piston rod of the electric push rod (24), and when the adjustable protective cylinder (2) is installed in the groove (1), one end of the starting block (7) penetrating through the fixing block (5) is embedded in any one of the fixing grooves (8); The fixed block (5) is internally provided with a spring (9), one end of the spring (9) is fixedly connected with the fixed block (5), the other end of the spring (9) is fixedly connected with the positioning block (6), when the starting block (7) passes through the fixed block (5), the starting block (7) is tightly abutted with the positioning block (6), the spring (9) is in a stretching state, and when the spring (9) is in a natural state, the positioning block (6) is completely arranged in the fixed block (5).
2. The method for precipitation construction of a pit according to claim 1, wherein in the step S2, after the water level is lower than the pit base elevation, the periphery of the pit is plastered with concrete.
3. The method for precipitation construction of a water collection pit according to claim 1, wherein in the step S2, the height of the adjustable pile casing (2) is higher than the height of the bottom cushion layer (3) of the water collection pit.
4. The method for precipitation construction of a water collecting pit according to claim 1, wherein in the step S3, after pouring of the four walls of the water collecting pit and the bottom cushion layer (3) is completed and initial setting is achieved, water is coated along the four walls of the water collecting pit and the bottom cushion layer (3) without leakage (4).
5. The method for precipitation construction of a pit according to claim 1, wherein in the step S4, the concrete poured in the trench (1) is higher in sign than the concrete in the pad layer (3).

Description

Sump precipitation construction method Technical Field The application relates to the technical field of building construction, in particular to a water-reducing construction method for a water pit. Background Along with the faster and faster people's life development, building construction also is more and more, and more common foundation ditch construction in the building construction, and in the foundation ditch construction, need carry out the foundation ditch excavation, can meet groundwater in the in-process of foundation ditch excavation, just have the problem of foundation ditch precipitation, often relate to the precipitation of sump pit, and local sump pit basement degree of depth is higher than the groundwater line. The general sump pit dewatering adopts the dewatering well dewatering, and the dewatering well sets up in the bottom of sump pit, and the dewatering well diameter is less, with suction pump and the water in the dewatering well of suction pipe take out can. Aiming at the related technology, the inventor considers that after the precipitation is finished, the water pump is taken out from the precipitation well, the underground water floats upwards again, so that a shallower water pit is formed in the water pit again, the pouring of cushion layer concrete and the subsequent construction of waterproof coiled materials are affected, if the water pit is not treated in time, the repeated floating and descending of the underground water can cause larger influence on the bottom of the water pit, and the soil body at the bottom of the water pit seriously loses the capacity of resisting the water pressure, so that the upper water pit collapses, the construction quality of the cushion layer and the waterproof is not guaranteed, and the defect of lower construction quality exists. Disclosure of Invention In order to achieve the effect of improving construction quality, the application provides a water-reducing construction method for a water pit. The application provides a sump precipitation construction method which adopts the following technical scheme: the water pit dewatering construction method comprises the following steps: S1, digging a groove at the bottom of a water collecting pit, and arranging a water pump in the groove; S2, gradually reducing the height of a water level line in the water pit through pumping water by a water pump, adjusting the size of the adjustable protection cylinder according to the size of the groove, installing the adjustable protection cylinder at the position of the groove, and wrapping the water pump; s3, pouring a cushion layer on the four walls and the bottom of the water collection pit; And S4, after the work is completed, the protective cylinder is pulled out to take out the water pump, concrete is poured into the groove, the groove is blocked, and the water-reducing work of the water pit is completed. Through adopting above-mentioned technical scheme, after carrying out the precipitation to the sump pit, block groundwater come-up and extravasation through pouring and adjustable protective casing of bed course, for not handling after the precipitation, avoided groundwater come-up and extravasation to do not influence the construction of follow-up waterproof book just, reach the effect that improves construction quality. Optionally, in step S2, after the water level line is lower than the elevation of the pit base, the periphery of the pit is plastered with concrete. Through adopting above-mentioned technical scheme, with the concrete to the pit plastering all around, initially block the come-up and the extravasation of groundwater, the construction of follow-up waterproofing membrane of being convenient for reaches the effect that improves construction quality. Optionally, in step S2, the height of the casing may be adjusted to be higher than the height of the bottom pad layer of the sump pit. Through adopting above-mentioned technical scheme, the height that the height of adjustable protective casing was higher than the sump pit bed course, and adjustable protective casing blockked groundwater, avoided groundwater to ooze from the slot lateral wall to improve construction quality, reach the effect that improves construction quality. Optionally, in step S3, after pouring the four walls of the water collection pit and the bottom cushion layer and reaching the initial setting, water is not leaked when the four walls of the water collection pit and the bottom cushion layer are brushed. Through adopting above-mentioned technical scheme, brush water and leak-free, carry out further blockking to groundwater, avoid groundwater extravasation to follow-up waterproofing membrane's construction of being convenient for reaches the effect that improves construction quality. Optionally, in step S4, the label of the concrete poured in the trench is higher than the label of the cushion layer concrete. Through adopting above-mentioned technical scheme, pouring of slot is af