CN218493582U

CN218493582U - Tamping hammer for underground water monitoring well drilling clay layering water stopping

Info

Publication number: CN218493582U
Application number: CN202222667159.1U
Authority: CN
Inventors: 张建; 刘益风; 陈安军; 张艳梅; 谷牧
Original assignee: Chongqing 2008 Geological Environment Research Institute Co ltd
Current assignee: Chongqing 2008 Geological Environment Research Institute Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-02-17
Anticipated expiration: 2032-10-11

Abstract

The utility model discloses a ramming hammer that groundwater monitoring well drilling clay layering stagnant water was used, including the hammer block, pass the hammer stem at hammer block center perpendicularly and be located the tup of hammer stem bottom, the hammer block is the cylinder structure, and the external diameter is not less than monitoring well drilling internal diameter, and the screw hole that link up perpendicularly about hammer block center department is equipped with, the external screw thread at hammer stem middle part is connected with hammer block screw hole to fixed through the nut that is located hammer block upper and lower extreme, the tup bottom is little big round platform form, top and the butt joint of hammer stem bottom screw thread down, the hammer block passes through cable wire hoist and mount and holds at the lift of rig, when the rig promotes the hammer block from eminence free fall to low department, the hammer stem stretches into monitoring well drilling and tamps the clay through tup, has saved process time, the stagnant water is effectual, the stagnant water layer structure is inseparable, advantages such as operating procedure is simple.

Description

Tamping hammer for underground water monitoring well drilling clay layering water stopping

Technical Field

The utility model belongs to the technical field of groundwater monitoring well drilling stagnant water, concretely relates to ramming hammer that groundwater monitoring well drilling clay layering stagnant water was used.

Background

At present, the common monitoring well drilling layering water stopping measures generally adopt clay synthesized small balls to be enclosed and filled between a drilling hole and a well pipe; or firstly put into a drill hole, then a well pipe with a wood plug is put into the drill hole to extrude clay out of the space between the well pipe and the hole wall, when the drill hole is deep, the clay can be synthesized into a thick mud shape and poured into a gap outside the well pipe, but the clay is tamped due to lack of related facilities, so that the porosity of a water stop layer is large, the structure of the water stop layer is unstable, the water stop position is easy to be knocked by a lifting drilling tool to lose efficacy, and the position near the water stop position is not suitable for strong piston well washing, so that the subsequent monitoring layering water quality effect of the drill hole of the monitoring well is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tamping hammer that groundwater monitoring well drilling clay layering stagnant water was used tamps stagnant water stratum structure, reinforcing layering stagnant water effect, solves and tamps the clay because of lacking relevant facility, and it is big to lead to stagnant water layer porosity, the unstable problem of stagnant water stratum structure.

Therefore, the utility model discloses the technical scheme who adopts does: the utility model provides a ramming hammer that groundwater monitoring well drilling clay layering stagnant water was used, includes the hammer block, passes the hammer stem at hammer block center and the tup that is located the hammer stem bottom perpendicularly, the hammer block is the cylinder structure, and the external diameter is not less than monitoring well drilling internal diameter, and perpendicular screw hole that link up about hammer block center department is equipped with, the external screw thread at hammer stem middle part is connected with hammer block screw hole to it is fixed through the nut that is located hammer block upper and lower extreme, the tup bottom is little big-end-up's round platform form, top and the butt joint of hammer stem bottom screw thread down, the hammer block passes through cable wire hoist and mount and holds at the lift of rig, when the rig promotes the hammer block from eminence free fall to low department, the hammer stem stretches into monitoring well drilling and tamps clay through the tup.

As the optimization of the scheme, the length of the hammer rod is 2-3 m, the depth of the hammer head extending into the monitoring well can be increased by connecting the hammer rods in series, the operation flexibility is strong, the hammer head is suitable for drilling holes with different depths, and the hammer head is suitable for various layered geological environments.

Further preferably, the hammer block is made of iron, the hammer rod and the hammer head are made of steel, the manufacturing cost of the materials is low, and budget is reduced.

Preferably, the ramming hammer adopts layered rammed clay, and each 30-50 cm of clay is one layer, and the layered rammed clay can lower the porosity among the clays and make the clays more compact.

The utility model has the advantages that:

(1) Compared with the simple clay synthesis bobble to enclose and fill out in monitoring well drilling and carry out interim stagnant water, carry out the clay layer that tamps the clay formation closely and stabilize through the ram, the rig provides promotion power for the ram after, with the help of the impact force tamp clay that ram free fall produced itself, make its porosity littleer, stagnant water layer structure is more firm, effectively avoid leading to stagnant water structure to collapse the inefficacy because of the lifting drilling tool collision, also can ensure can not destroy stagnant water layer structure because of violently ground water conservancy impact when subsequent piston well-flushing, not only can be used for interim stagnant water, can also be used for long-term stagnant water.

(2) The three parts of hammer block, hammer stem and tup are independent but can be through threaded connection equipment again, conveniently carry on the scene fast assembly, effectively save process time, the hammer block passes through the cable wire hoist and mount and holds at the lift of rig, convenient and fast, the stagnant water is effectual, the operating procedure of hammering clay is simple, the tup bottom is little round platform form big end up, effectively increase with the area of contact on clay layer, effective even gravity is strikeed, make clay layer porosity everywhere even.

In conclusion, the water stopping device has the advantages of saving the working procedure time, being good in water stopping effect, compact in water stopping layer structure, simple in operation steps and the like.

Drawings

FIG. 1 is a schematic diagram of a rammer construction.

Fig. 2 is a schematic diagram of step S1 in the method for stopping water by clay layering of the underground water monitoring well.

Fig. 3 is a schematic diagram of clay tamping by a tamping hammer in step S2 of the method for clay stratification and water stopping of the underground water monitoring well.

Fig. 4 is a schematic view of clay layers after being hammered by a tamper.

Fig. 5 is a schematic diagram of step S3 in the clay layered water stopping method for the underground water monitoring well.

Fig. 6 is a schematic diagram of step S5 in the clay layered water stopping method for the groundwater monitoring well.

Detailed Description

The invention will be further described by way of examples with reference to the accompanying drawings:

referring to fig. 1-6, the ramming hammer for clay stratification water stopping of underground water monitoring well drilling comprises a hammer body 31, a hammer rod 32 vertically penetrating through the center of the hammer body 31, and a hammer head 33 positioned at the bottom end of the hammer rod 32.

The hammer body 31 is of a cylindrical structure, and the outer diameter of the hammer body is not less than the inner diameter of the monitoring well borehole 1.

The center of the hammer body 31 is provided with a threaded hole vertically penetrating up and down.

The top of the hammer rod 32 is provided with an external thread, the middle part of the hammer rod is provided with an external thread, the bottom of the hammer rod is provided with an internal thread hole matched with the external thread at the top, the external thread at the middle part of the hammer rod 32 is connected with a threaded hole of the hammer body 31, and the hammer rod is fixed by a nut positioned at the upper end and the lower end of the hammer body 31.

The bottom end of the hammer head 33 is in a round table shape with a small lower part and a big upper part, and the top end is in threaded butt joint with the bottom end of the hammer rod 32.

The hammer body 31 is hung at the lifting end of the drilling machine A through a steel cable 311, and when the drilling machine A lifts the hammer body 31 to freely fall from a high position to a low position, the hammer rod 32 extends into the monitoring well drilling hole 1 and hammers rammed clay through the hammer head 33.

The length of the hammer rod 32 is preferably 2 m-3 m, and the depth of the hammer head 33 extending into the monitoring well drill hole 1 can be increased by connecting a plurality of hammer rods 32 in series.

The hammer body 31 is made of iron, and the hammer rod 32 and the hammer head 33 are made of steel.

The ramming hammer adopts layered ramming clay, and each 30-50 cm of clay is one layer.

The clay layering water stopping method for the underground water monitoring well comprises the following specific implementation steps:

s1, firstly, drilling a water stop target layer by using a large-caliber drilling tool of a drilling machine A from top to bottom to form a monitoring well drilling hole 1.

In the step S1, the diameter of a large-caliber drilling tool of the drilling machine A is 168mm, the height of a water-stopping target layer is 1-1.5 m, and the distance between the bottom surface of the monitoring well drilling hole 1 and the bottom surface of the water-stopping target layer is preferably 0.5-0.7 m.

S2, installing a tamping hammer on a drilling machine A, then filling clay into the monitoring well drilling hole 1, lifting the tamping hammer through the drilling machine A, hammering the tamped clay from top to bottom to form a clay layer 2, and detaching the tamping hammer;

in the step S2, the whole height of the clay layer 2 is not less than half of the design height of the water stop layer, and the design height of the water stop layer is the distance from the top surface of the water stop target layer to the bottom surface of the monitoring well drilling 1.

And S3, inserting the casing 4 into the clay layer 2 in the middle, then adopting a medium-caliber drilling tool of a drilling machine A to directly push the casing 4, drilling through the clay layer 2 and taking out the clay core.

In the step S3, the sleeve 4 is made of steel, the nominal diameter DN is 110 mm-130 mm, and the diameter of the medium-caliber drilling tool of the drilling machine A is 110mm.

And S4, according to the field mudstone distribution situation, continuously drilling the center in the monitoring well borehole 1 downwards to the designed hole depth by using the drilling machine A, and then descending the well pipe 5.

In step S4, the nominal diameter DN of the well pipe 5 is preferably 65mm to 100mm.

And S5, placing clay balls 6 between the inner wall of the casing 4 and the outer wall of the well pipe 5, wherein the stacking height of the clay balls 6 is higher than that of the clay layer 2, and finally pulling out the casing 4.

And S6, checking the water stopping effect, adding water between the well pipe 5 and the monitoring well borehole 1, recording the initial water amount, recording the water amount after 24 hours, and if the water amount changes to be 0-10 mL, ensuring that the water stopping effect meets the design standard.

Claims

1. The utility model provides a ramming hammer that groundwater monitoring well drilling clay layering stagnant water was used, its characterized in that, including hammer block (31), pass hammer stem (32) at hammer block (31) center and hammer head (33) that are located hammer stem (32) bottom perpendicularly, hammer block (31) are the cylinder structure, and the external diameter is not less than monitoring well drilling (1) internal diameter, and hammer block (31) center department is equipped with the screw hole that link up perpendicularly from top to bottom, and the external screw thread at hammer stem (32) middle part is connected with hammer block (31) screw hole to it is fixed through the nut that is located hammer block (31) upper and lower extreme, hammer head (33) bottom is little big round platform form, top and the butt joint of hammer stem (32) bottom screw thread down, hammer block (31) are through cable wire (311) hoist and mount lift end at rig (A), when monitoring well drilling (A) promoted hammer block (31) and freely falls the body from the eminence to the low place, hammer stem (32) stretch into hammer drilling (1) and tamp clay through hammer head (33).

2. The ramming hammer for clay stratification water stopping of underground water monitoring well drilling according to claim 1, wherein: the length of the hammer rod (32) is 2-3 m, and the depth of the hammer head (33) extending into the monitoring well drill hole (1) can be increased by connecting a plurality of hammer rods (32) in series.

3. The ramming hammer for clay layering water stopping of underground water monitoring well drilling according to claim 1, characterized in that: the hammer body (31) is made of iron, and the hammer rod (32) and the hammer head (33) are made of steel.

4. The ramming hammer for clay layering water stopping of underground water monitoring well drilling according to claim 1, characterized in that: the ramming hammer adopts layered ramming clay, and each 30-50 cm of clay is one layer.